From 373f2d127ae3396774a68113ed2f1bc526be7aac Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 10:27:07 +0200
Subject: [PATCH 001/151] fix(website): mobile comparison cards, hamburger nav,
 hero symmetry & reveal fallback

- Comparison table: stack into per-feature cards on phones (no more horizontal scroll); bring feature descriptions back
- Re-enable mobile hamburger menu (was hidden via display:none !important); keep logo/language/button uncrowded down to ~320px
- Fix hero asymmetry: extension mockup forced the grid column wider than the container; make it width:100%/max-width:320px and use minmax(0,1fr)
- Add IntersectionObserver guards + <noscript> fallback so reveal-animated content never stays hidden

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 website/app.js        |  50 ++++++++++-------
 website/style.css     | 128 ++++++++++++++++++++++++++++++++++++++++--
 website/template.html |   7 +++
 3 files changed, 159 insertions(+), 26 deletions(-)

diff --git a/website/app.js b/website/app.js
index 329095b..cf83788 100644
--- a/website/app.js
+++ b/website/app.js
@@ -19,31 +19,39 @@ document.addEventListener('DOMContentLoaded', () => {
 
     // Scroll Reveal Logic (IntersectionObserver for performance)
     const revealElements = document.querySelectorAll('[data-reveal]');
-    
-    const revealObserver = new IntersectionObserver((entries) => {
-        entries.forEach(entry => {
-            if (entry.isIntersecting) {
-                entry.target.classList.add('revealed');
-                revealObserver.unobserve(entry.target);
-            }
-        });
-    }, {
-        rootMargin: '0px 0px -150px 0px',
-        threshold: 0.1
-    });
 
-    revealElements.forEach(el => revealObserver.observe(el));
+    if ('IntersectionObserver' in window) {
+        const revealObserver = new IntersectionObserver((entries) => {
+            entries.forEach(entry => {
+                if (entry.isIntersecting) {
+                    entry.target.classList.add('revealed');
+                    revealObserver.unobserve(entry.target);
+                }
+            });
+        }, {
+            rootMargin: '0px 0px -150px 0px',
+            threshold: 0.1
+        });
+
+        revealElements.forEach(el => revealObserver.observe(el));
+    } else {
+        // Fallback: without IntersectionObserver support, reveal everything
+        // immediately so no content can ever stay hidden.
+        revealElements.forEach(el => el.classList.add('revealed'));
+    }
 
     // Auto-update URL hash as user scrolls through sections
     // (preserves position across language switches)
-    const sectionObserver = new IntersectionObserver((entries) => {
-        entries.forEach(entry => {
-            if (entry.isIntersecting) {
-                history.replaceState(null, null, '#' + entry.target.id);
-            }
-        });
-    }, { threshold: 0.3 });
-    document.querySelectorAll('section[id], header[id]').forEach(el => sectionObserver.observe(el));
+    if ('IntersectionObserver' in window) {
+        const sectionObserver = new IntersectionObserver((entries) => {
+            entries.forEach(entry => {
+                if (entry.isIntersecting) {
+                    history.replaceState(null, null, '#' + entry.target.id);
+                }
+            });
+        }, { threshold: 0.3 });
+        document.querySelectorAll('section[id], header[id]').forEach(el => sectionObserver.observe(el));
+    }
 
     // Navbar scroll effect
     const nav = document.querySelector('nav');
diff --git a/website/style.css b/website/style.css
index 3cd2aa3..470dfe1 100644
--- a/website/style.css
+++ b/website/style.css
@@ -358,7 +358,8 @@ nav {
 }
 
 .extension-mockup {
-    width: 320px;
+    width: 100%;
+    max-width: 320px;
     height: 520px;
     background: #0f172a;
     border-radius: 20px;
@@ -1900,7 +1901,7 @@ footer {
 
 @media (max-width: 768px) {
     .hero-grid, .step {
-        grid-template-columns: 1fr;
+        grid-template-columns: minmax(0, 1fr);
         text-align: center;
     }
     .hero-text h1 {
@@ -1931,7 +1932,7 @@ footer {
         margin-left: auto;
     }
     .hamburger {
-        display: none !important;
+        display: inline-flex !important;
     }
     nav .container {
         padding: 0 0.5rem;
@@ -1966,6 +1967,21 @@ footer {
     }
 }
 
+/* Extra-narrow phones: make sure logo, language picker and the menu button
+   never crowd each other in the header (kept comfortable down to ~320px). */
+@media (max-width: 380px) {
+    nav .container {
+        padding: 0 0.4rem;
+    }
+    .nav-right {
+        gap: 0.35rem;
+    }
+    .logo-area {
+        font-size: 1rem;
+        gap: 0.4rem;
+    }
+}
+
 /* --- Language Toggle --- */
 html.lang-de [lang="en"] {
     display: none !important;
@@ -2450,13 +2466,115 @@ html:not(.lang-de) [lang="de"] {
 }
 
 @media (max-width: 768px) {
-    .comparison-table th, 
+    .comparison-table th,
     .comparison-table td {
         padding: 1rem;
         font-size: 0.85rem;
     }
+}
+
+/* On phones the 3-column table is turned into stacked cards so there is
+   no horizontal scrolling — one card per feature, KoalaSync above Teleparty. */
+@media (max-width: 600px) {
+    .comparison-table-wrapper {
+        overflow-x: visible;
+        background: transparent;
+        border: none;
+        box-shadow: none;
+        backdrop-filter: none;
+        -webkit-backdrop-filter: none;
+        margin-top: 0;
+    }
+
+    .comparison-table {
+        display: block;
+        font-size: 0.95rem;
+    }
+
+    /* Visually hide the header row but keep it for screen readers. */
+    .comparison-table thead {
+        position: absolute;
+        width: 1px;
+        height: 1px;
+        padding: 0;
+        margin: -1px;
+        overflow: hidden;
+        clip: rect(0, 0, 0, 0);
+        white-space: nowrap;
+        border: 0;
+    }
+
+    .comparison-table tbody,
+    .comparison-table tr,
+    .comparison-table td {
+        display: block;
+        width: 100%;
+    }
+
+    .comparison-table tbody tr {
+        background: rgba(30, 41, 59, 0.35);
+        border: 1px solid var(--glass-border);
+        border-radius: 14px;
+        box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
+        margin-bottom: 1rem;
+        overflow: hidden;
+    }
+
+    .comparison-table tbody tr:last-child {
+        margin-bottom: 0;
+    }
+
+    .comparison-table td {
+        padding: 0.85rem 1.1rem;
+        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
+    }
+
+    .comparison-table tbody tr td:last-child {
+        border-bottom: none;
+    }
+
+    /* Feature name acts as the card header. */
+    .comparison-table td.feat-name {
+        background: rgba(15, 23, 42, 0.55);
+        padding: 0.9rem 1.1rem;
+    }
+
+    /* Room is back on the card, so show the description again. */
     .feat-desc {
-        display: none;
+        display: block;
+        margin-top: 0.15rem;
+    }
+
+    /* Label each value cell with the product it belongs to. */
+    .comparison-table td.check,
+    .comparison-table td.cross {
+        display: flex;
+        align-items: baseline;
+        gap: 0.4rem;
+    }
+
+    .comparison-table td.check::before,
+    .comparison-table td.cross::before {
+        flex: 0 0 5.5rem;
+        font-size: 0.7rem;
+        font-weight: 700;
+        text-transform: uppercase;
+        letter-spacing: 0.06em;
+        color: var(--text-muted);
+        opacity: 0.85;
+    }
+
+    .comparison-table td.check::before {
+        content: "KoalaSync";
+    }
+
+    .comparison-table td.cross::before {
+        content: "Teleparty";
+    }
+
+    /* Keep the KoalaSync row subtly highlighted, like on desktop. */
+    .comparison-table td.check.highlight {
+        background: rgba(99, 102, 241, 0.08);
     }
 }
 
diff --git a/website/template.html b/website/template.html
index 03b450b..fae7a06 100644
--- a/website/template.html
+++ b/website/template.html
@@ -183,6 +183,13 @@
       ]
     }
     </script>
+    <noscript>
+        <!-- Without JS the scroll-reveal observer never runs, so make all
+             reveal-animated content visible by default. -->
+        <style>
+            [data-reveal] { opacity: 1 !important; transform: none !important; }
+        </style>
+    </noscript>
 </head>
 <body>
 

From b5b3885d195c653a83b7fd5e346149faa444acd0 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 10:40:40 +0200
Subject: [PATCH 002/151] feat(extension): finish onboarding tour with closing
 step & cleaner welcome

- Add the previously-orphaned 5th onboarding step (ONBOARDING_5) so the tour ends on a closing card instead of stopping at the username field
- Make step 1 a centered welcome card instead of spotlighting the logo; guard querySelector for target-less steps
- Fix stale static placeholders in popup.html (Step 1 of 3 -> 5, progress 33% -> 20%)

Verified ONBOARDING_5/DONE exist across all 13 locales; rendered with the longest (German) copy.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/popup.html |  4 ++--
 extension/popup.js   | 15 +++++++++++----
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/extension/popup.html b/extension/popup.html
index 74c7180..dc2e31a 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -659,14 +659,14 @@
         <div id="onboarding-card" style="position:fixed; background:var(--card); padding:16px 20px; border-radius:12px; width:280px; box-shadow:0 8px 32px rgba(0,0,0,0.5); z-index:1002; transition:all 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-sizing:border-box; border:1px solid #334155; opacity:0; transform: scale(0.9); display:none;">
             <div style="display:flex; justify-content:space-between; align-items:center; margin-bottom:8px;">
                 <span id="onboarding-icon" style="font-size:24px;">👋</span>
-                <span id="onboarding-step-indicator" style="font-size:10px; font-weight:700; color:var(--accent); text-transform:uppercase; letter-spacing:0.5px;">Step 1 of 3</span>
+                <span id="onboarding-step-indicator" style="font-size:10px; font-weight:700; color:var(--accent); text-transform:uppercase; letter-spacing:0.5px;">Step 1 of 5</span>
             </div>
             <h2 id="onboarding-title" style="color:var(--accent); margin:0 0 6px; font-size:14px; font-weight:700; text-align:left;">Welcome to KoalaSync!</h2>
             <p id="onboarding-text" style="color:var(--text-muted); font-size:12px; margin:0 0 16px; line-height:1.4; text-align:left;">Let's get you started.</p>
             
             <!-- Progress Bar -->
             <div id="onboarding-progress-container" style="height:4px; background:#334155; border-radius:2px; margin-bottom:16px; overflow:hidden;">
-                <div id="onboarding-progress-bar" style="height:100%; width:33%; background:var(--accent); transition:width 0.3s ease;"></div>
+                <div id="onboarding-progress-bar" style="height:100%; width:20%; background:var(--accent); transition:width 0.3s ease;"></div>
             </div>
             
             <div style="display:flex; gap:8px; justify-content:space-between; align-items:center;">
diff --git a/extension/popup.js b/extension/popup.js
index 4c39bc9..6b0a07e 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -2119,9 +2119,9 @@ const onboardingSteps = [
     { 
         icon: '👋', 
         get title() { return getMessage('ONBOARDING_1_TITLE'); }, 
-        get text() { return getMessage('ONBOARDING_1_TEXT'); }, 
+        get text() { return getMessage('ONBOARDING_1_TEXT'); },
         targetTab: 'tab-room',
-        targetSelector: 'h1'
+        targetSelector: null
     },
     { 
         icon: '🏠', 
@@ -2140,9 +2140,16 @@ const onboardingSteps = [
     { 
         icon: '⚙️', 
         get title() { return getMessage('ONBOARDING_4_TITLE'); }, 
-        get text() { return getMessage('ONBOARDING_4_TEXT'); }, 
+        get text() { return getMessage('ONBOARDING_4_TEXT'); },
         targetTab: 'tab-settings',
         targetSelector: '#username'
+    },
+    {
+        icon: '🍿',
+        get title() { return getMessage('ONBOARDING_5_TITLE'); },
+        get text() { return getMessage('ONBOARDING_5_TEXT'); },
+        targetTab: 'tab-room',
+        targetSelector: null
     }
 ];
 
@@ -2316,7 +2323,7 @@ function renderOnboardingStep() {
     }
 
     onboardingTimeout = setTimeout(() => {
-        const targetEl = document.querySelector(step.targetSelector);
+        const targetEl = step.targetSelector ? document.querySelector(step.targetSelector) : null;
         if (targetEl && targetEl.offsetParent !== null) {
             positionSpotlightAndCard(targetEl);
         } else {

From 36f494fa5548565bff3a7ad4d787d1540dd9c2c1 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 10:50:04 +0200
Subject: [PATCH 003/151] feat(extension): one-click invite button in empty
 peer list + v2.4.1 changelog

- "No peers yet" state now shows a localized "Copy invite link" button (reuses BTN_COPY_INVITE, present in all 13 locales) so users can share without hunting for the field
- Add v2.4.1 changelog entry covering the onboarding tour improvements, empty-state action, and the mobile landing-page fixes from this session

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/CHANGELOG.md  | 16 ++++++++++++++++
 extension/popup.js | 18 ++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 0dc3693..a3456ef 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -4,6 +4,22 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ---
 
+## [v2.4.1] — 2026-06-19
+
+### Added
+- **Extension: Onboarding tour now has a closing step** — The first-run tour ends on a dedicated "You're all set!" card (the `ONBOARDING_5` copy that already existed in all 13 locales but was never shown). The tour no longer stops abruptly on the username step.
+- **Extension: One-click invite from the empty peer list** — The "No peers yet" state now shows a **📋 Invite Link** button that copies the invite link to the clipboard, so users can share it without hunting for the field.
+
+### Changed
+- **Extension: Cleaner onboarding welcome** — Step 1 is now a centered welcome card instead of spotlighting the logo title. Added a guard so target-less tour steps center cleanly.
+- **Website: Mobile comparison table** — The KoalaSync vs Teleparty table stacks into per-feature cards on phones instead of forcing horizontal scrolling; feature descriptions are shown again on mobile.
+
+### Fixed
+- **Extension: Onboarding step counter/progress placeholders** — Static `Step 1 of 3` / 33% fallbacks in `popup.html` corrected to match the actual 5-step tour (`Step 1 of 5` / 20%).
+- **Website: Mobile navigation restored** — The header hamburger menu was hidden by a `display:none !important` rule, leaving the nav links unreachable on phones. Re-enabled, with spacing kept comfortable down to ~320px.
+- **Website: Hero alignment on mobile** — A fixed-width extension mockup forced the hero grid column wider than the container, shifting all hero content off-center (larger left margin than right). The mockup is now responsive (`width:100%/max-width` + `minmax(0,1fr)` grid track).
+- **Website: Reveal-animation fallback** — Added a `<noscript>` style fallback and `IntersectionObserver` feature guards so scroll-revealed content can never stay invisible if JavaScript is disabled or unsupported.
+
 ## [v2.4.0] — 2026-06-16
 
 ### Added
diff --git a/extension/popup.js b/extension/popup.js
index 6b0a07e..764ddf1 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -503,6 +503,24 @@ function renderEmpty(container, type) {
     wrapper.appendChild(iconDiv);
     wrapper.appendChild(titleDiv);
     wrapper.appendChild(hintDiv);
+
+    // "No peers yet" — turn the hint into a one-click action so the user can
+    // immediately copy and share the invite link instead of hunting for it.
+    if (type === 'peers' && elements.inviteLink && elements.inviteLink.value) {
+        const copyBtn = document.createElement('button');
+        copyBtn.type = 'button';
+        copyBtn.className = 'primary';
+        copyBtn.style.cssText = 'display:inline-block; width:auto; margin-top:12px; padding:6px 14px; font-size:11px;';
+        copyBtn.textContent = getMessage('BTN_COPY_INVITE');
+        copyBtn.title = getMessage('BTN_COPY_INVITE_TOOLTIP');
+        copyBtn.addEventListener('click', () => {
+            navigator.clipboard.writeText(elements.inviteLink.value)
+                .then(() => showToast(getMessage('TOAST_INVITE_COPIED'), 'success', 2000))
+                .catch(() => showToast(getMessage('TOAST_COPY_FAILED'), 'error'));
+        });
+        wrapper.appendChild(copyBtn);
+    }
+
     container.replaceChildren(wrapper);
 }
 

From b4c00f36a0d4da5675fbfe0b56b8b5c3712c3f61 Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Fri, 19 Jun 2026 08:50:27 +0000
Subject: [PATCH 004/151] chore(release): update versions to v2.4.1 [skip ci]

---
 README.md                    |  6 +++---
 extension/manifest.base.json |  2 +-
 package.json                 |  2 +-
 website/sitemap.xml          | 34 +++++++++++++++++-----------------
 website/template.html        |  2 +-
 website/version.json         |  4 ++--
 6 files changed, 25 insertions(+), 25 deletions(-)

diff --git a/README.md b/README.md
index ac1275f..dc551fd 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml"><img src="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg" alt="Release Status"></a>
-  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.0-blue?logo=github" alt="GitHub release"></a>
+  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.1-blue?logo=github" alt="GitHub release"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue" alt="License"></a>
   <a href="https://addons.mozilla.org/de/firefox/addon/koalasync/"><img src="https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser&logoColor=white" alt="Firefox Add-on"></a>
   <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white" alt="Chrome Extension"></a>
@@ -14,7 +14,7 @@
 
 <p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
 
-<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.0 Release!</b> — See what's changed</a></p>
+<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.1 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
@@ -103,7 +103,7 @@ To connect your extension to a self-hosted server, open the popup → **Room** t
 
 To verify your relay is reachable from outside, visit `https://your-domain.com` in a browser — it should return `{"status":"online","service":"KoalaSync Relay"}`.
 
-#### Supply Chain Security (v2.4.0+)
+#### Supply Chain Security (v2.4.1+)
 
 All official release artifacts (Docker images and extension binaries) are published with signed [artifact attestations](https://docs.github.com/en/actions/how-tos/secure-your-work/use-artifact-attestations) to prove they were built from this repository's source code.
 
diff --git a/extension/manifest.base.json b/extension/manifest.base.json
index 456d35c..87e3fb7 100644
--- a/extension/manifest.base.json
+++ b/extension/manifest.base.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "en",
   "name": "KoalaSync",
-  "version": "2.4.0",
+  "version": "2.4.1",
   "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
diff --git a/package.json b/package.json
index 0000828..c88352d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "2.4.0",
+  "version": "2.4.1",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "type": "module",
diff --git a/website/sitemap.xml b/website/sitemap.xml
index 1ea6fde..6889eac 100644
--- a/website/sitemap.xml
+++ b/website/sitemap.xml
@@ -3,31 +3,31 @@
         xmlns:xhtml="http://www.w3.org/1999/xhtml">
   <url>
     <loc>https://sync.koalastuff.net/imprint</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/privacy</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/impressum</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/datenschutz</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>1.0</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -47,7 +47,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -67,7 +67,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -87,7 +87,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -107,7 +107,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -127,7 +127,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -147,7 +147,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -167,7 +167,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -187,7 +187,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -207,7 +207,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -227,7 +227,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -247,7 +247,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -267,7 +267,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/</loc>
-    <lastmod>2026-06-16</lastmod>
+    <lastmod>2026-06-19</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
diff --git a/website/template.html b/website/template.html
index fae7a06..fd026a3 100644
--- a/website/template.html
+++ b/website/template.html
@@ -102,7 +102,7 @@
         "priceCurrency": "EUR"
       },
       "description": "Watch Netflix, YouTube, Twitch, Jellyfin, Emby and almost any HTML5 video in perfect sync with friends. Open source, privacy-first, free.",
-      "softwareVersion": "2.4.0",
+      "softwareVersion": "2.4.1",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",
       "image": "https://sync.koalastuff.net/assets/NewLogoIcon.webp",
diff --git a/website/version.json b/website/version.json
index 34621ed..edebed6 100644
--- a/website/version.json
+++ b/website/version.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.4.0",
-  "date": "2026-06-16T12:00:03Z"
+  "version": "2.4.1",
+  "date": "2026-06-19T08:50:27Z"
 }

From 450f715874df0f19f1eccf886d4df0da67aa901c Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 10:59:30 +0200
Subject: [PATCH 005/151] ci(release): update actions to Node 24 versions &
 optimize workflow

- Bump all actions off the deprecated Node 20 runtime: checkout v4->v7,
  upload-artifact v4->v7, setup-node added@v6, action-gh-release v1->v3,
  docker build-push v5->v7, login v3->v4, metadata v5->v6, buildx v3->v4
  (verified latest majors via GitHub API; no breaking input/output changes)
- Add npm dependency caching via setup-node (cache: npm)
- Add GHA layer caching for the multi-arch Docker build (cache-from/to gha)
- Add concurrency group so a release run is never interrupted, only dedupes
  re-pushes of the same tag
- Tighten release-server permissions to contents: read (it never writes to the repo)

Version-injection and commit-back logic unchanged. First exercised on the next v* tag.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 .github/workflows/release.yml | 33 ++++++++++++++++++++++++---------
 1 file changed, 24 insertions(+), 9 deletions(-)

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index dd39159..d2314cd 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -5,23 +5,29 @@ on:
     tags:
       - 'v*'
 
+# A release run must never be interrupted (it commits back to main and publishes
+# artifacts). Only dedupe accidental re-pushes of the same tag.
+concurrency:
+  group: release-${{ github.ref_name }}
+  cancel-in-progress: false
+
 jobs:
   release-server:
     runs-on: ubuntu-latest
     permissions:
-      contents: write
+      contents: read
       packages: write
       id-token: write
       attestations: write
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
 
       - name: Log in to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -29,7 +35,7 @@ jobs:
 
       - name: Extract Docker metadata
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ghcr.io/${{ github.repository }}
           tags: |
@@ -38,7 +44,7 @@ jobs:
 
       - name: Build and push Docker image
         id: build
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: server/Dockerfile
@@ -46,6 +52,9 @@ jobs:
           platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+          # Reuse layers across releases to speed up the multi-arch build.
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
 
       - name: Generate artifact attestation
         uses: actions/attest@v4
@@ -62,7 +71,13 @@ jobs:
       attestations: write
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: '24'
+          cache: 'npm'
 
       - name: Extract version from tag
         id: version
@@ -128,14 +143,14 @@ jobs:
         run: node website/build.cjs
 
       - name: Upload Website Artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: website-www
           path: website/www/
           if-no-files-found: error
 
       - name: Create GitHub Release
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v3
         with:
           files: |
             dist/koalasync-chrome.zip

From 8a9293280b2505317eb15105d5288b066168acdf Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 11:12:48 +0200
Subject: [PATCH 006/151] chore: harden version substitution in release
 workflow and fix supply chain security version in README

---
 .github/workflows/release.yml | 5 +++--
 README.md                     | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d2314cd..839444a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -109,8 +109,9 @@ jobs:
           sed -i "s/\"softwareVersion\": \".*\"/\"softwareVersion\": \"$VERSION\"/" website/template.html
           echo "  ✓ website/template.html -> softwareVersion $VERSION"
 
-          # 6. README.md — version badge
-          sed -i "s/v[0-9]\+\.[0-9]\+\.[0-9]\+/v$VERSION/g" README.md
+          # 6. README.md — version badge & banner
+          sed -i "s|Release-v[0-9]\+\.[0-9]\+\.[0-9]\+-blue|Release-v$VERSION-blue|g" README.md
+          sed -i "s/New v[0-9]\+\.[0-9]\+\.[0-9]\+ Release/New v$VERSION Release/g" README.md
           echo "  ✓ README.md -> v$VERSION"
 
           # 7. website/sitemap.xml — lastmod dates
diff --git a/README.md b/README.md
index dc551fd..2efed88 100644
--- a/README.md
+++ b/README.md
@@ -103,7 +103,7 @@ To connect your extension to a self-hosted server, open the popup → **Room** t
 
 To verify your relay is reachable from outside, visit `https://your-domain.com` in a browser — it should return `{"status":"online","service":"KoalaSync Relay"}`.
 
-#### Supply Chain Security (v2.4.1+)
+#### Supply Chain Security (v2.2.2+)
 
 All official release artifacts (Docker images and extension binaries) are published with signed [artifact attestations](https://docs.github.com/en/actions/how-tos/secure-your-work/use-artifact-attestations) to prove they were built from this repository's source code.
 

From 59b675ce175588deb651e7f1b8fea600d4a9dd87 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 11:35:49 +0200
Subject: [PATCH 007/151] docs: audit and update script references, supported
 languages, and completed milestones

---
 .github/PULL_REQUEST_TEMPLATE.md |  2 +-
 .github/workflows/release.yml    |  2 +-
 CONTRIBUTING.md                  | 12 ++++++------
 docs/AI_INIT.md                  | 16 ++++++++--------
 docs/ROADMAP.md                  |  5 ++++-
 docs/TRANSLATION.md              |  6 +++---
 extension/README.md              |  2 +-
 scripts/README.md                |  4 ++--
 scripts/build-extension.cjs      |  6 +++---
 shared/README.md                 |  2 +-
 shared/blacklist.js              |  2 +-
 shared/constants.js              |  4 ++--
 shared/names.js                  |  2 +-
 website/README.md                | 10 +++++-----
 14 files changed, 39 insertions(+), 36 deletions(-)

diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index e3662a9..775db90 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -37,7 +37,7 @@ Closes #
 - [ ] I have performed a self-review of my code
 - [ ] I have added/updated tests if needed
 - [ ] I have updated documentation if needed (`docs/`, README, etc.)
-- [ ] Protocol changes: I ran `node scripts/build-extension.js` and updated relevant docs
+- [ ] Protocol changes: I ran `node scripts/build-extension.cjs` and updated relevant docs
 - [ ] No new warnings, secrets, or hardcoded credentials introduced
 
 ### Additional Context
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 839444a..67cbd08 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -94,7 +94,7 @@ jobs:
           echo "  ✓ manifest.base.json -> $VERSION"
 
           # 2. shared/constants.js — APP_VERSION
-          sed -i "s/export const APP_VERSION = '.*'/export const APP_VERSION = '$VERSION'/" shared/constants.js
+          sed -i "s/export const APP_VERSION = [\"'].*[\"']/export const APP_VERSION = \"$VERSION\"/" shared/constants.js
           echo "  ✓ shared/constants.js -> $VERSION"
 
           # 3. package.json
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 141859e..b9ddb8d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -31,7 +31,7 @@ Please note that by participating in this project, you agree to abide by our [Co
 git clone https://github.com/Shik3i/KoalaSync.git
 cd KoalaSync
 npm install
-node scripts/build-extension.js
+node scripts/build-extension.cjs
 ```
 
 ---
@@ -62,7 +62,7 @@ node scripts/build-extension.js
 ### Website
 
 ```bash
-node website/build.js           # Compile static site → www/
+node website/build.cjs           # Compile static site → www/
 python3 -m http.server 8080 -d website/www  # Serve locally
 ```
 
@@ -77,7 +77,7 @@ KoalaSync uses a **single source of truth** for all protocol constants in `share
 > [!IMPORTANT]
 > After modifying `shared/constants.js`, you **must** run the build script to sync changes to the extension:
 > ```bash
-> node scripts/build-extension.js
+> node scripts/build-extension.cjs
 > ```
 > This automatically injects constants into `content.js` and regenerates browser bundles in `dist/`.
 
@@ -109,7 +109,7 @@ If you are new to open-source contributions, follow these steps to propose your
 3. **Create a Branch**: `git checkout -b my-new-feature` (e.g. `feature/dark-mode` or `fix/translation-de`)
 4. **Make your Changes**: Edit the files, then verify them locally.
    - *Extension/Server changes*: Test on Chrome/Firefox and check `npm run lint`.
-   - *Website/Translation changes*: Run `node website/build.js` and check the output in `www/`.
+   - *Website/Translation changes*: Run `node website/build.cjs` and check the output in `www/`.
 5. **Commit and Push**: `git commit -m "Add my feature"` and `git push origin my-new-feature`
 6. **Open a Pull Request (PR)**: Go to the original KoalaSync repository on GitHub and click "New Pull Request".
 
@@ -156,9 +156,9 @@ KoalaSync supports multiple languages. To add or improve translations:
 1. Read the **[Translation Guide](docs/TRANSLATION.md)** first. It explains how our localization system works.
 2. Edit the `.json` files in `website/locales/` (for the website) and `extension/locales/` (for the extension).
 3. Test your translations locally by running:
-   - `node scripts/test-locales.js` (for extension)
+   - `node scripts/test-locales.cjs` (for extension)
    - `node scripts/test-website-locales.mjs` (for website)
-   - `node website/build.js` (to build the site)
+   - `node website/build.cjs` (to build the site)
 4. Follow the **Open Source Workflow** above (Fork -> Branch -> Edit -> PR) to submit your translations.
 
 ---
diff --git a/docs/AI_INIT.md b/docs/AI_INIT.md
index a0955d2..b99280c 100644
--- a/docs/AI_INIT.md
+++ b/docs/AI_INIT.md
@@ -21,14 +21,14 @@ KoalaSync is a specialized tool for **synchronized video playback** across multi
 - `extension/`: Browser Extension (Chrome & Firefox, Manifest V3). Contains background service worker, content scripts, and popup UI.
 - `server/`: Node.js Relay Server using Socket.IO (WebSocket-only).
 - `website/`: **Landing Page** & Invitation Bridge (Marketing, Tutorials, and Downloads).
-  - **`build.js`**: Zero-dependency static site compiler. Translates `template.html` + `locales/*.json` → `www/`. Also minifies CSS/JS automatically.
-  - **`www/` is auto-generated**: Never edit files in `www/` directly. Always edit source files (`template.html`, `style.css`, `app.js`, `lang-init.js`, `locales/*.json`) and run `node website/build.js` to regenerate. CSS/JS are output as `.min.*` files — a built-in cleanup step removes stale artifacts on each build.
+  - **`build.cjs`**: Zero-dependency static site compiler. Translates `template.html` + `locales/*.json` → `www/`. Also minifies CSS/JS automatically.
+  - **`www/` is auto-generated**: Never edit files in `www/` directly. Always edit source files (`template.html`, `style.css`, `app.js`, `lang-init.js`, `locales/*.json`) and run `node website/build.cjs` to regenerate. CSS/JS are output as `.min.*` files — a built-in cleanup step removes stale artifacts on each build.
 - `shared/`: **Single Source of Truth** for protocol constants and event names.
-- `scripts/`: Development utilities (e.g., `build-extension.js`).
+- `scripts/`: Development utilities (e.g., `build-extension.cjs`).
 - `docker-compose.yml`: Root-level orchestration for the relay server.
 
 > [!IMPORTANT]
-> **Single Source of Truth**: `shared/constants.js` and `shared/blacklist.js` are the master files. They must be synchronized to the `extension/shared/` directory using `node scripts/build-extension.js`. 
+> **Single Source of Truth**: `shared/constants.js` and `shared/blacklist.js` are the master files. They must be synchronized to the `extension/shared/` directory using `node scripts/build-extension.cjs`. 
 > - **Extension Modules** (`background.js`, `popup.js`) import directly from `./shared/constants.js`.
 > - **Content Scripts** (`content.js`) use a **marker-injected synchronous copy** of the constants. The build script automatically replaces the marked blocks — no manual mirroring needed.
 
@@ -41,7 +41,7 @@ Before touching any code, you MUST read the following documents in order:
 ## 4. The "Vanilla JS Mirror" Pattern
 To avoid boot-time race conditions in Manifest V3 without a bundler, the following architectural trade-off is enforced:
 - **Synchronous Execution**: `content.js` MUST execute synchronously to catch early media events. 
-- **Automated Injection**: The build script (`node scripts/build-extension.js`) automatically injects `EVENTS` and `HEARTBEAT_INTERVAL` into `content.js` using marker-based replacement (see `../scripts/README.md` for marker details).
+- **Automated Injection**: The build script (`node scripts/build-extension.cjs`) automatically injects `EVENTS` and `HEARTBEAT_INTERVAL` into `content.js` using marker-based replacement (see `../scripts/README.md` for marker details).
 - **Maintenance**: After modifying `shared/constants.js`, simply run the build script. No manual mirroring is required.
 
 ## 5. File Responsibility Map
@@ -137,18 +137,18 @@ Before starting any task, committing, or pushing, you **MUST** run `git pull --r
 
 ### Adding a Protocol Event
 1. Add the event name to `shared/constants.js`.
-2. Run the build script (`node scripts/build-extension.js`).
+2. Run the build script (`node scripts/build-extension.cjs`).
 3. Implement the handler in `server/index.js` and `background.js`.
 
 ### Making Website Changes
 1. Edit source files in `website/` (`template.html`, `style.css`, `app.js`, `lang-init.js`, or `locales/*.json`).
-2. Run the compiler: `node website/build.js`. This generates the multilingual pages in `www/` and minifies CSS/JS.
+2. Run the compiler: `node website/build.cjs`. This generates the multilingual pages in `www/` and minifies CSS/JS.
 3. Verify the output: `node --check website/www/app.js && node --check website/www/lang-init.js`.
 4. Test locally: `npx serve website/www` or `python3 -m http.server 8080 -d website/www`.
 5. Commit both source changes and the updated `www/` output.
 
 ### Testing Locally
-1. Run the build script: `node scripts/build-extension.js`.
+1. Run the build script: `node scripts/build-extension.cjs`.
 2. Load `dist/chrome/` as an "Unpacked Extension" in Chrome (or `dist/firefox/` in Firefox).
 3. Start the server from the root: `docker-compose up --build`.
 4. Use **different browser profiles** or vendors to test multi-peer logic.
diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index 4361dd2..effee3d 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -87,4 +87,7 @@
 
 | Feature | Shipped |
 |---|---|
-| *(none yet)* | |
+| **Lazy WebSocket Connection** (only connects when active/popup open) | v2.4.0 |
+| **Interactive Onboarding Tour** (guided first-run user experience) | v2.3.0 |
+| **Artifact Attestations** (SLSA supply chain security via GitHub Actions) | v2.2.3 |
+| **Multi-Language Support** (expanded to 13 locales with dynamic switching) | v2.2.0 |
diff --git a/docs/TRANSLATION.md b/docs/TRANSLATION.md
index caf2d43..2c9748e 100644
--- a/docs/TRANSLATION.md
+++ b/docs/TRANSLATION.md
@@ -69,19 +69,19 @@ The website hosts the landing page and invitation bridge.
      "LANG_TOGGLE_TEXT": "EN"
    }
    ```
-5. If creating a **brand new language**, register it in `website/build.js` by adding it to the `languages` array.
+5. If creating a **brand new language**, register it in `website/build.cjs` by adding it to the `languages` array.
 
 ### Step 4: Verify Locally
 Ensure your JSON files are valid and all keys match the English baseline. Open your terminal in the KoalaSync root folder and run:
 ```bash
 # Tests the extension locales for missing keys or syntax errors
-node scripts/test-locales.js
+node scripts/test-locales.cjs
 
 # Tests the website locales for missing keys or syntax errors
 node scripts/test-website-locales.mjs
 
 # Builds the website with your new translations
-node website/build.js
+node website/build.cjs
 ```
 *Note: If you receive any errors about missing keys or `TODO` placeholders, please fix them before submitting.*
 
diff --git a/extension/README.md b/extension/README.md
index be4f5d9..8e9c68b 100644
--- a/extension/README.md
+++ b/extension/README.md
@@ -8,7 +8,7 @@ A Manifest V3 Browser Extension (Chrome & Firefox) for synchronized video playba
 - **Smart Peer IDs**: Hexadecimal IDs combined with customizable Usernames for easy identification.
 - **On-Demand Connection**: The service worker only maintains a WebSocket connection while you're in a room. No persistent background connections — privacy-first architecture. Based on `connectIntent` flag that gates all reconnect attempts.
 - **Live Diagnostics**: Built-in "Dev" tab for real-time video state debugging (ReadyState, CurrentTime, etc.).
-- **Dynamic i18n (Multi-Language)**: Fully localized in 6 languages (`en`, `de`, `fr`, `es`, `pt-BR`, `ru`) with auto-detected fallback and dynamic on-the-fly language selectors.
+- **Dynamic i18n (Multi-Language)**: Fully localized in 13 languages (`en`, `de`, `fr`, `es`, `it`, `pl`, `tr`, `nl`, `ja`, `ko`, `pt-BR`, `pt`, `ru`) with auto-detected fallback and dynamic on-the-fly language selectors.
 
 ## Tab Overview
 1. **Room**: Manage connections, view active peers, and share invitation links.
diff --git a/scripts/README.md b/scripts/README.md
index 4fdbf11..53ada3f 100644
--- a/scripts/README.md
+++ b/scripts/README.md
@@ -2,7 +2,7 @@
 
 This directory contains utility scripts for the KoalaSync development workflow.
 
-## build-extension.js
+## build-extension.cjs
 
 The primary build tool for KoalaSync. This Node.js script automates two critical tasks:
 
@@ -15,7 +15,7 @@ The primary build tool for KoalaSync. This Node.js script automates two critical
 From the **repository root**, run:
 
 ```bash
-node scripts/build-extension.js
+node scripts/build-extension.cjs
 ```
 
 ### Why this script exists
diff --git a/scripts/build-extension.cjs b/scripts/build-extension.cjs
index 4f69299..d7b8c2c 100644
--- a/scripts/build-extension.cjs
+++ b/scripts/build-extension.cjs
@@ -77,7 +77,7 @@ function copyExtensionFiles(targetDir, browserName) {
         const eStart = '// --- SHARED_EVENTS_INJECT_START ---';
         const eEnd = '// --- SHARED_EVENTS_INJECT_END ---';
         const ePattern = new RegExp(`${eStart}[\\s\\S]+?${eEnd}`);
-        const eRep = `${eStart}\n    // This block is automatically updated by /scripts/build-extension.js\n    const EVENTS = ${eventsObject};\n    ${eEnd}`;
+        const eRep = `${eStart}\n    // This block is automatically updated by /scripts/build-extension.cjs\n    const EVENTS = ${eventsObject};\n    ${eEnd}`;
         
         if (ePattern.test(content)) {
           content = content.replace(ePattern, eRep);
@@ -108,7 +108,7 @@ function copyExtensionFiles(targetDir, browserName) {
             .replace(/^\/\*\*[\s\S]*?\*\/\s*/m, '')
             .replace(/export function /g, 'function ')
             .trim();
-          const euRep = `${euStart}\n    // This block is automatically updated by /scripts/build-extension.js\n${stripped.split('\n').map(l => '    ' + l).join('\n')}\n    ${euEnd}`;
+          const euRep = `${euStart}\n    // This block is automatically updated by /scripts/build-extension.cjs\n${stripped.split('\n').map(l => '    ' + l).join('\n')}\n    ${euEnd}`;
           if (euPattern.test(content)) {
             content = content.replace(euPattern, euRep);
           } else {
@@ -127,7 +127,7 @@ function copyExtensionFiles(targetDir, browserName) {
         const uPattern = new RegExp(`${uStart}[\\s\\S]+?${uEnd}`);
         const placeholderUrl = "https://bye.koalastuff.net/c/camp_99ztjRVbK1BNN2RU";
         
-        let uRep = `${uStart}\n        // This block is automatically updated by /scripts/build-extension.js\n`;
+        let uRep = `${uStart}\n        // This block is automatically updated by /scripts/build-extension.cjs\n`;
         uRep += `        const UNINSTALL_URL = "${placeholderUrl}";\n`;
         uRep += `        const BROWSER_TYPE = "${browserName}";\n`;
         uRep += `        ${uEnd}`;
diff --git a/shared/README.md b/shared/README.md
index fb515a9..0d82083 100644
--- a/shared/README.md
+++ b/shared/README.md
@@ -4,7 +4,7 @@ This directory contains constants and protocol definitions used by both the exte
 
 ## Syncing with the Extension
 > [!IMPORTANT]
-> Every time this directory is modified, you must run `node scripts/build-extension.js` to keep the extension's copy up to date.
+> Every time this directory is modified, you must run `node scripts/build-extension.cjs` to keep the extension's copy up to date.
 
 Because Browser Extensions (Manifest V3) cannot load files outside their root directory, all files in this directory must be copied to `extension/shared/` whenever they are modified. The build script handles this automatically.
 
diff --git a/shared/blacklist.js b/shared/blacklist.js
index fd207bc..a61f383 100644
--- a/shared/blacklist.js
+++ b/shared/blacklist.js
@@ -2,7 +2,7 @@
  * blacklist.js
  * 
  * ⚠️ WARNING: This is the SINGLE SOURCE OF TRUTH.
- * If you edit this file, you MUST run: node scripts/build-extension.js
+ * If you edit this file, you MUST run: node scripts/build-extension.cjs
  * to propagate changes to the extension and relay server.
  * 
  * Domains to be filtered out from the tab selection dropdown to reduce "noise".
diff --git a/shared/constants.js b/shared/constants.js
index 5a0e85b..cbbd582 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -2,12 +2,12 @@
  * KoalaSync Shared Constants & Protocol Definitions
  * 
  * ⚠️ WARNING: This is the SINGLE SOURCE OF TRUTH.
- * If you edit this file, you MUST run: node scripts/build-extension.js
+ * If you edit this file, you MUST run: node scripts/build-extension.cjs
  * to propagate changes to the extension and relay server.
  */
 
 export const PROTOCOL_VERSION = "1.0.0";
-export const APP_VERSION = "1.9.0";
+export const APP_VERSION = "2.4.1";
 
 export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
diff --git a/shared/names.js b/shared/names.js
index d6eccb0..179255b 100644
--- a/shared/names.js
+++ b/shared/names.js
@@ -2,7 +2,7 @@
  * KoalaSync Shared Name Generation & Emoji Mapping
  *
  * ⚠️ WARNING: This is the SINGLE SOURCE OF TRUTH.
- * If you edit this file, you MUST run: node scripts/build-extension.js
+ * If you edit this file, you MUST run: node scripts/build-extension.cjs
  * to propagate changes to the extension.
  *
  * The emoji map covers every animal/creature that has a Unicode emoji.
diff --git a/website/README.md b/website/README.md
index 7f0cb0f..aa1b4a0 100644
--- a/website/README.md
+++ b/website/README.md
@@ -5,7 +5,7 @@ This directory contains the KoalaSync website. It serves a dual purpose: it is b
 ## Core Roles
 
 ### 1. Marketing & Onboarding
-Provides a premium, multi-language (EN/DE/FR/ES/PT-BR/RU) overview of features, setup instructions, and direct links to the extension stores.
+Provides a premium, multi-language (EN/DE/FR/ES/PT-BR/RU/IT/PL/TR/NL/JA/KO/PT) overview of features, setup instructions, and direct links to the extension stores.
 
 ### 2. The Invitation Bridge (`join.html`)
 The website handles incoming invitation links. When a user clicks a link like `sync.koalastuff.net/join.html#join:roomID:pass`, the website:
@@ -16,8 +16,8 @@ The website handles incoming invitation links. When a user clicks a link like `s
 ## Architecture
 
 The website is 100% **Static HTML, CSS, and JS**. 
-- **Static i18n Compiler**: The site uses a lightweight, zero-dependency Node.js compiler (`build.js`) to parse dictionary files inside `/locales/` against a single source-of-truth template (`template.html`), outputting the fully deployable static folder to `/www/`.
-- **Build-time Minification**: `build.js` automatically minifies CSS and JS during compilation using a built-in state-machine tokenizer (no npm dependencies). Source files are written unminified (`style.css`, `app.js`, `lang-init.js`) — always edit source files, never the generated `.min.*` files in `www/`.
+- **Static i18n Compiler**: The site uses a lightweight, zero-dependency Node.js compiler (`build.cjs`) to parse dictionary files inside `/locales/` against a single source-of-truth template (`template.html`), outputting the fully deployable static folder to `/www/`.
+- **Build-time Minification**: `build.cjs` automatically minifies CSS and JS during compilation using a built-in state-machine tokenizer (no npm dependencies). Source files are written unminified (`style.css`, `app.js`, `lang-init.js`) — always edit source files, never the generated `.min.*` files in `www/`.
 - **Zero Backend**: No Node.js, PHP, or databases are required to host the compiled website.
 - **Zero Tracking**: All assets (fonts, icons) are self-hosted to prevent third-party tracking.
 - **Responsive**: Fully optimized for mobile with a native-feel hamburger menu.
@@ -62,7 +62,7 @@ sync.koalastuff.net {
 
 1. Run the compilation script from the repository root to generate the `/website/www` folder:
    ```bash
-   node website/build.js
+   node website/build.cjs
    ```
 2. Serve the compiled `/www` directory using any local development server:
    ```bash
@@ -71,4 +71,4 @@ sync.koalastuff.net {
 3. To test the invitation flow locally, navigate to `http://localhost:5000/join.html#join:test-room:test-pass`.
 
 > [!IMPORTANT]
-> **Never edit files inside `website/www/` directly.** This directory is fully auto-generated by `build.js`. Always edit source files (`template.html`, `style.css`, `app.js`, `lang-init.js`, locale files in `locales/`) and re-run `node website/build.js` to apply changes. CSS and JS are output as `style.min.css`, `app.min.js`, and `lang-init.min.js` — the `.min.*` naming makes it visually obvious these are build artifacts. Editing minified files in `www/` will result in lost changes on the next build.
+> **Never edit files inside `website/www/` directly.** This directory is fully auto-generated by `build.cjs`. Always edit source files (`template.html`, `style.css`, `app.js`, `lang-init.js`, locale files in `locales/`) and re-run `node website/build.cjs` to apply changes. CSS and JS are output as `style.min.css`, `app.min.js`, and `lang-init.min.js` — the `.min.*` naming makes it visually obvious these are build artifacts. Editing minified files in `www/` will result in lost changes on the next build.

From fb2270026870fdde79289c26e06729515e897d65 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 11:38:39 +0200
Subject: [PATCH 008/151] docs: revert completed milestones in ROADMAP.md

---
 docs/ROADMAP.md | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index effee3d..193df0d 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -79,15 +79,4 @@
 |---|---|
 | *(none yet)* | |
 
----
 
-## ✅ Completed
-
-*Shipped milestones.*
-
-| Feature | Shipped |
-|---|---|
-| **Lazy WebSocket Connection** (only connects when active/popup open) | v2.4.0 |
-| **Interactive Onboarding Tour** (guided first-run user experience) | v2.3.0 |
-| **Artifact Attestations** (SLSA supply chain security via GitHub Actions) | v2.2.3 |
-| **Multi-Language Support** (expanded to 13 locales with dynamic switching) | v2.2.0 |

From 32fd677a314a2e7ea0584756e393dbdb63d4624d Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 11:54:07 +0200
Subject: [PATCH 009/151] feat: optimize extension uninstall URL registration
 with anonymous token and startup hardening

---
 extension/background.js | 40 +++++++++++++++++++++++++++++++++++++---
 1 file changed, 37 insertions(+), 3 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 6e13bf8..f184038 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -4,8 +4,14 @@ import { loadLocale, getMessage, getSystemLanguage } from './i18n.js';
 import { sameEpisode } from './episode-utils.js';
 
 // --- Uninstall URL Initialization ---
-chrome.runtime.onInstalled.addListener((details) => {
-    if (details.reason === 'install' || details.reason === 'update') {
+let uninstallURLInitPromise = null;
+
+async function initUninstallURL() {
+    if (uninstallURLInitPromise) {
+        return uninstallURLInitPromise;
+    }
+    
+    uninstallURLInitPromise = (async () => {
         // --- UNINSTALL_URL_INJECT_START ---
         const UNINSTALL_URL = ""; // Populated during build
         const BROWSER_TYPE = "unknown";
@@ -13,8 +19,24 @@ chrome.runtime.onInstalled.addListener((details) => {
         
         if (UNINSTALL_URL && UNINSTALL_URL.trim() !== '') {
             try {
+                if (typeof chrome === 'undefined' || !chrome.storage || !chrome.storage.local) {
+                    console.warn("Storage API not available, skipping uninstall URL token generation");
+                    return;
+                }
+
+                const data = await chrome.storage.local.get("koalaByeToken");
+                let token = data?.koalaByeToken;
+                
+                if (!token) {
+                    token = (typeof self.crypto !== 'undefined' && typeof self.crypto.randomUUID === 'function')
+                        ? self.crypto.randomUUID()
+                        : Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15);
+                    await chrome.storage.local.set({ koalaByeToken: token });
+                }
+
                 const url = new URL(UNINSTALL_URL);
                 url.searchParams.set("browser", BROWSER_TYPE);
+                url.searchParams.set("t", token);
                 
                 const runtimeAPI = typeof browser !== 'undefined' ? browser.runtime : chrome.runtime;
                 if (runtimeAPI && runtimeAPI.setUninstallURL) {
@@ -25,12 +47,24 @@ chrome.runtime.onInstalled.addListener((details) => {
                     }
                 }
             } catch (err) {
-                console.error("Invalid uninstall URL provided:", err);
+                console.error("Failed to initialize uninstall URL:", err);
             }
         }
+    })();
+
+    return uninstallURLInitPromise;
+}
+
+chrome.runtime.onInstalled.addListener((details) => {
+    if (details.reason === 'install' || details.reason === 'update') {
+        initUninstallURL();
     }
 });
 
+chrome.runtime.onStartup.addListener(() => {
+    initUninstallURL();
+});
+
 // --- State Management ---
 let socket = null;
 let isConnecting = false;

From 24ad7c3732e87988507879842b4e3d877b591115 Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Fri, 19 Jun 2026 09:54:42 +0000
Subject: [PATCH 010/151] chore(release): update versions to v2.4.2 [skip ci]

---
 README.md                    | 4 ++--
 extension/manifest.base.json | 2 +-
 package.json                 | 2 +-
 shared/constants.js          | 2 +-
 website/template.html        | 2 +-
 website/version.json         | 4 ++--
 6 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index 2efed88..9215e0e 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml"><img src="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg" alt="Release Status"></a>
-  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.1-blue?logo=github" alt="GitHub release"></a>
+  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.2-blue?logo=github" alt="GitHub release"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue" alt="License"></a>
   <a href="https://addons.mozilla.org/de/firefox/addon/koalasync/"><img src="https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser&logoColor=white" alt="Firefox Add-on"></a>
   <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white" alt="Chrome Extension"></a>
@@ -14,7 +14,7 @@
 
 <p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
 
-<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.1 Release!</b> — See what's changed</a></p>
+<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.2 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
diff --git a/extension/manifest.base.json b/extension/manifest.base.json
index 87e3fb7..c2c769c 100644
--- a/extension/manifest.base.json
+++ b/extension/manifest.base.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "en",
   "name": "KoalaSync",
-  "version": "2.4.1",
+  "version": "2.4.2",
   "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
diff --git a/package.json b/package.json
index c88352d..437f4d3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "2.4.1",
+  "version": "2.4.2",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "type": "module",
diff --git a/shared/constants.js b/shared/constants.js
index cbbd582..dfa1298 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -7,7 +7,7 @@
  */
 
 export const PROTOCOL_VERSION = "1.0.0";
-export const APP_VERSION = "2.4.1";
+export const APP_VERSION = "2.4.2";
 
 export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
diff --git a/website/template.html b/website/template.html
index fd026a3..58ff702 100644
--- a/website/template.html
+++ b/website/template.html
@@ -102,7 +102,7 @@
         "priceCurrency": "EUR"
       },
       "description": "Watch Netflix, YouTube, Twitch, Jellyfin, Emby and almost any HTML5 video in perfect sync with friends. Open source, privacy-first, free.",
-      "softwareVersion": "2.4.1",
+      "softwareVersion": "2.4.2",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",
       "image": "https://sync.koalastuff.net/assets/NewLogoIcon.webp",
diff --git a/website/version.json b/website/version.json
index edebed6..b7f2901 100644
--- a/website/version.json
+++ b/website/version.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.4.1",
-  "date": "2026-06-19T08:50:27Z"
+  "version": "2.4.2",
+  "date": "2026-06-19T09:54:42Z"
 }

From 8f72c238a2d8212d3118a3c2ceb32fc7e7936498 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 11:55:49 +0200
Subject: [PATCH 011/151] docs: add v2.4.2 entry to CHANGELOG.md

---
 docs/CHANGELOG.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index a3456ef..5f4635c 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ---
 
+## [v2.4.2] — 2026-06-19
+
+### Changed
+- **Extension: Optimized uninstall URL registration** — Extracted registration into a reusable, race-condition-protected `initUninstallURL()` helper. It now generates a unique, anonymous token (`t`) stored in `chrome.storage.local` to securely track uninstalls, and registers the URL on both extension installation/update and browser startup to prevent state loss.
+
 ## [v2.4.1] — 2026-06-19
 
 ### Added

From 8fd866f20a03d84876067161370a0c5c6b468559 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 12:10:08 +0200
Subject: [PATCH 012/151] feat(website): add canonicals, hreflangs, meta
 descriptions, and localized schema descriptions

---
 website/datenschutz-de.html | 5 +++++
 website/impressum-de.html   | 5 +++++
 website/imprint.html        | 5 +++++
 website/locales/de.json     | 1 +
 website/locales/en.json     | 1 +
 website/locales/es.json     | 1 +
 website/locales/fr.json     | 1 +
 website/locales/it.json     | 1 +
 website/locales/ja.json     | 1 +
 website/locales/ko.json     | 1 +
 website/locales/nl.json     | 1 +
 website/locales/pl.json     | 1 +
 website/locales/pt-BR.json  | 1 +
 website/locales/pt.json     | 1 +
 website/locales/ru.json     | 1 +
 website/locales/tr.json     | 1 +
 website/privacy.html        | 5 +++++
 website/template.html       | 2 +-
 18 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/website/datenschutz-de.html b/website/datenschutz-de.html
index f2c3829..29dfaad 100644
--- a/website/datenschutz-de.html
+++ b/website/datenschutz-de.html
@@ -7,6 +7,11 @@
     <link rel="preload" href="../style.min.css" as="style">
     <link rel="stylesheet" href="../style.min.css">
     <link rel="icon" type="image/webp" href="../assets/NewLogoIcon_64.webp">
+    <link rel="canonical" href="https://sync.koalastuff.net/de/datenschutz">
+    <link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/privacy">
+    <link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/datenschutz">
+    <link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/privacy">
+    <meta name="description" content="Datenschutzerklärung von KoalaSync - Wir nehmen Datenschutz ernst. Erfahre mehr über unseren Ansatz ohne Tracking, ohne Logs und ohne Cookies.">
     <meta name="robots" content="index, follow">
 
     <script type="application/ld+json">
diff --git a/website/impressum-de.html b/website/impressum-de.html
index d4ce248..e5aa2c5 100644
--- a/website/impressum-de.html
+++ b/website/impressum-de.html
@@ -7,6 +7,11 @@
     <link rel="preload" href="../style.min.css" as="style">
     <link rel="stylesheet" href="../style.min.css">
     <link rel="icon" type="image/webp" href="../assets/NewLogoIcon_64.webp">
+    <link rel="canonical" href="https://sync.koalastuff.net/de/impressum">
+    <link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/imprint">
+    <link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/impressum">
+    <link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/imprint">
+    <meta name="description" content="Impressum (Legal Notice) von KoalaSync - Anbieterkennzeichnung und Kontaktinformationen für die Open-Source Video-Synchronisations-Erweiterung.">
     <meta name="robots" content="index, follow">
 
     <script type="application/ld+json">
diff --git a/website/imprint.html b/website/imprint.html
index 3678439..94dc2ab 100644
--- a/website/imprint.html
+++ b/website/imprint.html
@@ -7,6 +7,11 @@
     <link rel="preload" href="style.min.css" as="style">
     <link rel="stylesheet" href="style.min.css">
     <link rel="icon" type="image/webp" href="assets/NewLogoIcon_64.webp">
+    <link rel="canonical" href="https://sync.koalastuff.net/imprint">
+    <link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/imprint">
+    <link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/impressum">
+    <link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/imprint">
+    <meta name="description" content="Legal Notice (Impressum) of KoalaSync - Contact information and operator details for the open-source video synchronization extension.">
     <meta name="robots" content="index, follow">
 
     <script type="application/ld+json">
diff --git a/website/locales/de.json b/website/locales/de.json
index da21ad4..6f5c7a9 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "de_DE",
   "META_TITLE": "KoalaSync | Netflix, YouTube & jedes Video mit Freunden synchronisieren",
   "META_DESCRIPTION": "Schaue Netflix, YouTube, Twitch und jedes HTML5-Video synchron mit Freunden. Kostenlose, quelloffene Browser-Erweiterung. Keine Anmeldung erforderlich.",
+  "SCHEMA_APP_DESC": "Schaue Netflix, YouTube, Twitch und jedes HTML5-Video synchron mit Freunden. Kostenlose, quelloffene Browser-Erweiterung. Keine Anmeldung erforderlich.",
   "OG_TITLE": "KoalaSync | Netflix, Emby, Jellyfin & fast jedes Video mit Freunden synchronisieren",
   "OG_DESCRIPTION": "Schaue Netflix, Emby, Jellyfin, YouTube, Twitch und fast jedes HTML5-Video perfekt synchronisiert. Quelloffene, datenschutzfreundliche Browser-Erweiterung für Chrome und Firefox.",
   "TWITTER_TITLE": "KoalaSync | Netflix, Emby, Jellyfin & fast jedes Video mit Freunden synchronisieren – Browser-Erweiterung",
diff --git a/website/locales/en.json b/website/locales/en.json
index 85accea..d4a3463 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "en_US",
   "META_TITLE": "KoalaSync | Sync Netflix, YouTube & Any Video with Friends",
   "META_DESCRIPTION": "Watch Netflix, YouTube, Twitch & any HTML5 video in perfect sync with friends. Free, open-source browser extension for Chrome and Firefox. No sign-up needed.",
+  "SCHEMA_APP_DESC": "Watch Netflix, YouTube, Twitch & any HTML5 video in perfect sync with friends. Free, open-source browser extension for Chrome and Firefox. No sign-up needed.",
   "OG_TITLE": "KoalaSync | Sync Netflix, Emby, Jellyfin & Almost Any Video with Friends",
   "OG_DESCRIPTION": "Watch Netflix, Emby, Jellyfin, YouTube, Twitch and almost any HTML5 video in perfect sync. Privacy-first, open-source browser extension for Chrome & Firefox.",
   "TWITTER_TITLE": "KoalaSync | Sync Netflix, Emby, Jellyfin & Almost Any Video with Friends – Browser Extension",
diff --git a/website/locales/es.json b/website/locales/es.json
index 44f1799..2cd9587 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "es_ES",
   "META_TITLE": "KoalaSync | Sincroniza Netflix, YouTube y cualquier video con amigos",
   "META_DESCRIPTION": "Mira Netflix, YouTube, Twitch y cualquier video HTML5 en perfecta sincronización con amigos. Extensión de navegador gratuita, de código abierto y sin necesidad de registro.",
+  "SCHEMA_APP_DESC": "Mira Netflix, YouTube, Twitch y cualquier video HTML5 en perfecta sincronización con amigos. Extensión de navegador gratuita, de código abierto y sin necesidad de registro.",
   "OG_TITLE": "KoalaSync | Sincroniza Netflix, Emby, Jellyfin y casi cualquier video con amigos",
   "OG_DESCRIPTION": "Mira Netflix, Emby, Jellyfin, YouTube, Twitch y casi cualquier video HTML5 en perfecta sincronización. Extensión de navegador de código abierto y respetuosa con la privacidad para Chrome y Firefox.",
   "TWITTER_TITLE": "KoalaSync | Sincroniza Netflix, Emby, Jellyfin y casi cualquier video con amigos – Extensión de navegador",
diff --git a/website/locales/fr.json b/website/locales/fr.json
index a3281b9..3a98bdf 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "fr_FR",
   "META_TITLE": "KoalaSync | Synchronisez Netflix, YouTube et n'importe quelle vidéo avec vos amis",
   "META_DESCRIPTION": "Regardez Netflix, YouTube, Twitch et des vidéos HTML5 en synchro avec vos amis. Extension de navigateur gratuite et open-source. Aucune inscription requise.",
+  "SCHEMA_APP_DESC": "Regardez Netflix, YouTube, Twitch et des vidéos HTML5 en synchro avec vos amis. Extension de navigateur gratuite et open-source. Aucune inscription requise.",
   "OG_TITLE": "KoalaSync | Synchronisez Netflix, Emby, Jellyfin et presque toutes les vidéos avec vos amis",
   "OG_DESCRIPTION": "Regardez Netflix, Emby, Jellyfin, YouTube, Twitch et presque n'importe quelle vidéo HTML5 en parfaite synchronisation. Extension de navigateur open-source et respectueuse de la vie privée pour Chrome et Firefox.",
   "TWITTER_TITLE": "KoalaSync | Synchronisez Netflix, Emby, Jellyfin et presque toutes les vidéos avec vos amis – Extension de navigateur",
diff --git a/website/locales/it.json b/website/locales/it.json
index 2742835..237cfed 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "it_IT",
   "META_TITLE": "KoalaSync | Sincronizza Netflix, YouTube e qualsiasi video con i tuoi amici",
   "META_DESCRIPTION": "Guarda Netflix, YouTube, Twitch e qualsiasi video HTML5 in perfetta sincronia. Estensione gratuita, open source e senza registrazione.",
+  "SCHEMA_APP_DESC": "Guarda Netflix, YouTube, Twitch e qualsiasi video HTML5 in perfetta sincronia. Estensione gratuita, open source e senza registrazione.",
   "OG_TITLE": "KoalaSync | Sincronizza Netflix, Emby, Jellyfin e video web con i tuoi amici",
   "OG_DESCRIPTION": "Guarda video in perfetta sincronia con i tuoi amici. Estensione open source per Chrome e Firefox incentrata sulla privacy.",
   "TWITTER_TITLE": "KoalaSync | Sincronizza video in streaming con i tuoi amici",
diff --git a/website/locales/ja.json b/website/locales/ja.json
index eae29e3..b8a98cf 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "ja_JP",
   "META_TITLE": "KoalaSync | Netflix、YouTube、あらゆる動画を友達と同期視聴",
   "META_DESCRIPTION": "Netflix、YouTube、Twitch、およびあらゆるHTML5動画を友達と完全に同期して視聴。ChromeおよびFirefox用の無料のオープンソースブラウザ拡張機能。登録不要。",
+  "SCHEMA_APP_DESC": "Netflix、YouTube、Twitch、およびあらゆるHTML5動画を友達と完全に同期して視聴。ChromeおよびFirefox用の無料のオープンソースブラウザ拡張機能。登録不要。",
   "OG_TITLE": "KoalaSync | Netflix、Emby、Jellyfin、ほぼすべての動画を友達と同期",
   "OG_DESCRIPTION": "Netflix、Emby、Jellyfin、YouTube、Twitch、ほぼすべてのHTML5動画を完全に同期して視聴。ChromeおよびFirefox用のプライバシー優先のオープンソースブラウザ拡張機能。",
   "TWITTER_TITLE": "KoalaSync | Netflix、Emby、Jellyfin、ほぼすべての動画を友達と同期 – ブラウザ拡張機能",
diff --git a/website/locales/ko.json b/website/locales/ko.json
index 3ae5173..c7c73c2 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "ko_KR",
   "META_TITLE": "KoalaSync | Netflix, YouTube 및 모든 비디오를 친구와 실시간 동기화 시청",
   "META_DESCRIPTION": "Netflix, YouTube, Twitch 및 모든 HTML5 비디오를 친구들과 완벽하게 동기화하여 시청하세요. Chrome 및 Firefox용 무료 오픈 소스 브라우저 확장 프로그램. 가입 필요 없음.",
+  "SCHEMA_APP_DESC": "Netflix, YouTube, Twitch 및 모든 HTML5 비디오를 친구들과 완벽하게 동기화하여 시청하세요. Chrome 및 Firefox용 무료 오픈 소스 브라우저 확장 프로그램. 가입 필요 없음.",
   "OG_TITLE": "KoalaSync | Netflix, Emby, Jellyfin 및 거의 모든 비디오를 친구와 동기화 시청",
   "OG_DESCRIPTION": "Netflix, Emby, Jellyfin, YouTube, Twitch 및 거의 모든 HTML5 비디오를 완벽하게 동기화하여 시청하세요. Chrome 및 Firefox용 개인정보 보호 중심 오픈 소스 브라우저 확장 프로그램.",
   "TWITTER_TITLE": "KoalaSync | Netflix, Emby, Jellyfin 및 거의 모든 비디오를 친구와 동기화 시청 – 브라우저 확장 프로그램",
diff --git a/website/locales/nl.json b/website/locales/nl.json
index c07f65a..2fd40e9 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "nl_NL",
   "META_TITLE": "KoalaSync | Synchroniseer Netflix, YouTube & elke video met vrienden",
   "META_DESCRIPTION": "Bekijk Netflix, YouTube, Twitch en elke HTML5-video in perfecte synchronisatie met vrienden. Gratis, open-source browserextensie voor Chrome en Firefox. Geen registratie nodig.",
+  "SCHEMA_APP_DESC": "Bekijk Netflix, YouTube, Twitch en elke HTML5-video in perfecte synchronisatie met vrienden. Gratis, open-source browserextensie voor Chrome en Firefox. Geen registratie nodig.",
   "OG_TITLE": "KoalaSync | Synchroniseer Netflix, Emby, Jellyfin & bijna elke video met vrienden",
   "OG_DESCRIPTION": "Bekijk Netflix, Emby, Jellyfin, YouTube, Twitch en bijna elke HTML5-video in perfecte synchronisatie. Privacy-first, open-source browserextensie voor Chrome & Firefox.",
   "TWITTER_TITLE": "KoalaSync | Synchroniseer Netflix, Emby, Jellyfin & bijna elke video met vrienden – Browserextensie",
diff --git a/website/locales/pl.json b/website/locales/pl.json
index 479e7fc..38607e6 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "pl_PL",
   "META_TITLE": "KoalaSync | Synchronizuj Netflix, YouTube i dowolne wideo ze znajomymi",
   "META_DESCRIPTION": "Oglądaj Netflix, YouTube, Twitch i dowolne wideo HTML5 w idealnej synchronizacji ze znajomymi. Darmowe rozszerzenie o otwartym kodzie dla Chrome i Firefox. Bez rejestracji.",
+  "SCHEMA_APP_DESC": "Oglądaj Netflix, YouTube, Twitch i dowolne wideo HTML5 w idealnej synchronizacji ze znajomymi. Darmowe rozszerzenie o otwartym kodzie dla Chrome i Firefox. Bez rejestracji.",
   "OG_TITLE": "KoalaSync | Synchronizuj Netflix, Emby, Jellyfin i prawie każde wideo ze znajomymi",
   "OG_DESCRIPTION": "Oglądaj Netflix, Emby, Jellyfin, YouTube, Twitch i prawie każde wideo HTML5 w idealnej synchronizacji. Zorientowane na prywatność rozszerzenie o otwartym kodzie dla Chrome i Firefox.",
   "TWITTER_TITLE": "KoalaSync | Synchronizuj Netflix, Emby, Jellyfin i prawie każde wideo ze znajomymi – Rozszerzenie przeglądarki",
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index 0429902..1a7011d 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "pt_BR",
   "META_TITLE": "KoalaSync | Sincronize Netflix, YouTube e qualquer vídeo com amigos",
   "META_DESCRIPTION": "Assista Netflix, YouTube, Twitch e qualquer vídeo HTML5 em perfeita sincronia. Extensão de navegador gratuita e open source. Sem cadastro.",
+  "SCHEMA_APP_DESC": "Assista Netflix, YouTube, Twitch e qualquer vídeo HTML5 em perfeita sincronia. Extensão de navegador gratuita e open source. Sem cadastro.",
   "OG_TITLE": "KoalaSync | Sincronize Netflix, Emby, Jellyfin e vídeos com amigos",
   "OG_DESCRIPTION": "Assista a vídeos em perfeita sincronia com seus amigos. Extensão open source e focada em privacidade.",
   "TWITTER_TITLE": "KoalaSync | Sincronize vídeos online com seus amigos",
diff --git a/website/locales/pt.json b/website/locales/pt.json
index 41f13ee..e6b79f1 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "pt_PT",
   "META_TITLE": "KoalaSync | Sincronize Netflix, YouTube e vídeos com os amigos",
   "META_DESCRIPTION": "Veja Netflix, YouTube, Twitch e qualquer vídeo HTML5 em sincronia perfeita. Extensão gratuita e de código aberto. Sem registo.",
+  "SCHEMA_APP_DESC": "Veja Netflix, YouTube, Twitch e qualquer vídeo HTML5 em sincronia perfeita. Extensão gratuita e de código aberto. Sem registo.",
   "OG_TITLE": "KoalaSync | Sincronize Netflix, Emby, Jellyfin e vídeos com os amigos",
   "OG_DESCRIPTION": "Veja vídeos em sincronia perfeita com os amigos. Extensão de código aberto e focada na privacidade.",
   "TWITTER_TITLE": "KoalaSync | Sincronize vídeos em streaming com os amigos",
diff --git a/website/locales/ru.json b/website/locales/ru.json
index b411ad3..16dc3a4 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "ru_RU",
   "META_TITLE": "KoalaSync | Синхронизация Netflix, YouTube и любого видео с друзьями",
   "META_DESCRIPTION": "Смотрите Netflix, YouTube, Twitch и любые HTML5-видео в синхронизации с друзьями. Бесплатное расширение браузера с открытым кодом. Регистрация не требуется.",
+  "SCHEMA_APP_DESC": "Смотрите Netflix, YouTube, Twitch и любые HTML5-видео в синхронизации с друзьями. Бесплатное расширение браузера с открытым кодом. Регистрация не требуется.",
   "OG_TITLE": "KoalaSync | Синхронизация Netflix, Emby, Jellyfin и почти любого видео с друзьями",
   "OG_DESCRIPTION": "Смотрите Netflix, Emby, Jellyfin, YouTube, Twitch и почти любое HTML5-видео в идеальной синхронизации. Открытое и ориентированное на конфиденциальность расширение для Chrome и Firefox.",
   "TWITTER_TITLE": "KoalaSync | Синхронизация Netflix, Emby, Jellyfin и почти любого видео с друзьями – Расширение",
diff --git a/website/locales/tr.json b/website/locales/tr.json
index 1758864..b5c75c7 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -7,6 +7,7 @@
   "OG_LOCALE": "tr_TR",
   "META_TITLE": "KoalaSync | Netflix, YouTube ve Herhangi Bir Videoyu Arkadaşlarınızla Eşitleyin",
   "META_DESCRIPTION": "Netflix, YouTube, Twitch ve herhangi bir HTML5 videoyu arkadaşlarınızla mükemmel uyum içinde izleyin. Chrome ve Firefox için ücretsiz, açık kaynaklı tarayıcı eklentisi. Kayıt gerekmez.",
+  "SCHEMA_APP_DESC": "Netflix, YouTube, Twitch ve herhangi bir HTML5 videoyu arkadaşlarınızla mükemmel uyum içinde izleyin. Chrome ve Firefox için ücretsiz, açık kaynaklı tarayıcı eklentisi. Kayıt gerekmez.",
   "OG_TITLE": "KoalaSync | Netflix, Emby, Jellyfin ve Neredeyse Her Videoyu Arkadaşlarınızla Eşitleyin",
   "OG_DESCRIPTION": "Netflix, Emby, Jellyfin, YouTube, Twitch ve neredeyse tüm HTML5 videolarını mükemmel bir senkronizasyonla izleyin. Chrome ve Firefox için gizlilik öncelikli, açık kaynaklı tarayıcı eklentisi.",
   "TWITTER_TITLE": "KoalaSync | Netflix, Emby, Jellyfin ve Neredeyse Her Videoyu Arkadaşlarla Eşitle – Tarayıcı Eklentisi",
diff --git a/website/privacy.html b/website/privacy.html
index 7121dfc..d5b15fa 100644
--- a/website/privacy.html
+++ b/website/privacy.html
@@ -7,6 +7,11 @@
     <link rel="preload" href="style.min.css" as="style">
     <link rel="stylesheet" href="style.min.css">
     <link rel="icon" type="image/webp" href="assets/NewLogoIcon_64.webp">
+    <link rel="canonical" href="https://sync.koalastuff.net/privacy">
+    <link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/privacy">
+    <link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/datenschutz">
+    <link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/privacy">
+    <meta name="description" content="Privacy Policy of KoalaSync - We take data security and transparency seriously. Learn about our zero-tracking, zero-log, and zero-cookie approach.">
     <meta name="robots" content="index, follow">
 
     <script type="application/ld+json">
diff --git a/website/template.html b/website/template.html
index 58ff702..ded5f7c 100644
--- a/website/template.html
+++ b/website/template.html
@@ -101,7 +101,7 @@
         "price": "0",
         "priceCurrency": "EUR"
       },
-      "description": "Watch Netflix, YouTube, Twitch, Jellyfin, Emby and almost any HTML5 video in perfect sync with friends. Open source, privacy-first, free.",
+      "description": "{{SCHEMA_APP_DESC}}",
       "softwareVersion": "2.4.2",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",

From a0c16df6648494aa330dffa80c68f720ec60514b Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 16:26:20 +0200
Subject: [PATCH 013/151] feat(i18n): add Ukrainian & Chinese, fix zh/uk
 translation quality
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Add two new languages (uk, zh / zh_CN) across the extension and website:
register them in SUPPORTED_LANGUAGES, the Chrome _locales map, the website
build/lang-init/app routing, hreflang/og/schema tags and language selectors.

Fix systematic machine-translation word-sense errors in the new zh/uk
locales (e.g. zh "Status"=地位→状态, "Leave Room"=留出空间→离开房间,
"Play"=玩→播放, "Seek"=寻找→跳转, audio Attack/Release/Knee; uk "Play"=Грати
→Відтворити, "Clear"=ЯСНО→Очистити, "Open"=ВІДЧИНЕНО→Відкрити, peers
"Однолітки"→"Учасники"), translate remaining English leftovers (Room ID,
Custom) and normalise terminology. All 15 locales pass test-locales.cjs.

Note: popup.html and website/template.html also carry the language-selector
additions here; their Ko-Fi→Support label text is part of the branding change.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/TRANSLATION.md                    | 104 +++++++-----
 extension/_locales/uk/messages.json    |   8 +
 extension/_locales/zh_CN/messages.json |   8 +
 extension/i18n.js                      |   2 +-
 extension/locales/de.json              |   2 +-
 extension/locales/en.json              |   2 +-
 extension/locales/es.json              |   2 +-
 extension/locales/fr.json              |   2 +-
 extension/locales/it.json              |   2 +-
 extension/locales/ja.json              |   2 +-
 extension/locales/ko.json              |   2 +-
 extension/locales/nl.json              |   2 +-
 extension/locales/pl.json              |   2 +-
 extension/locales/pt-BR.json           |   2 +-
 extension/locales/pt.json              |   2 +-
 extension/locales/ru.json              |   2 +-
 extension/locales/tr.json              |   2 +-
 extension/locales/uk.json              | 212 +++++++++++++++++++++++++
 extension/locales/zh.json              | 212 +++++++++++++++++++++++++
 extension/popup.html                   |   6 +-
 scripts/test-locales.cjs               |   3 +-
 website/app.js                         |   8 +-
 website/build.cjs                      |   2 +-
 website/lang-init.js                   |   6 +-
 website/locales/de.json                |   4 +-
 website/locales/en.json                |   4 +-
 website/locales/es.json                |  10 +-
 website/locales/fr.json                |  12 +-
 website/locales/it.json                |  10 +-
 website/locales/ja.json                |   4 +-
 website/locales/ko.json                |   4 +-
 website/locales/nl.json                |   6 +-
 website/locales/pl.json                |   4 +-
 website/locales/pt-BR.json             |  10 +-
 website/locales/pt.json                |  10 +-
 website/locales/ru.json                |  10 +-
 website/locales/tr.json                |   4 +-
 website/locales/uk.json                | 180 +++++++++++++++++++++
 website/locales/zh.json                | 180 +++++++++++++++++++++
 website/template.html                  |  14 +-
 40 files changed, 947 insertions(+), 116 deletions(-)
 create mode 100644 extension/_locales/uk/messages.json
 create mode 100644 extension/_locales/zh_CN/messages.json
 create mode 100644 extension/locales/uk.json
 create mode 100644 extension/locales/zh.json
 create mode 100644 website/locales/uk.json
 create mode 100644 website/locales/zh.json

diff --git a/docs/TRANSLATION.md b/docs/TRANSLATION.md
index 2c9748e..128c5f7 100644
--- a/docs/TRANSLATION.md
+++ b/docs/TRANSLATION.md
@@ -1,78 +1,91 @@
 # KoalaSync Translation & Localization Guide
 
-Welcome to the **KoalaSync** translation guide! We rely on the open-source community to make KoalaSync accessible to users worldwide.
+Welcome to the **KoalaSync** translation guide. We rely on the open-source community to make KoalaSync accessible to users worldwide.
 
 KoalaSync is split into two independent translation areas. You can translate either one, or both:
+
 1. **The Browser Extension** (`extension/locales/`): The core product that users interact with daily.
 2. **The Website** (`website/locales/`): The landing page and invitation bridge.
 
 ---
 
-## 📊 Supported Languages Dashboard
+## Supported Languages Dashboard
 
 We divide supported languages into two tiers: **Core Languages** (fully hand-crafted and audited by native speakers) and **Extended Languages** (auto-generated using translation models to expand initial coverage).
 
 > [!TIP]
 > **Help Us Improve!**
-> We welcome community contributions to audit "Auto-Generated" translations and elevate them to "Verified" status.
+> We welcome community contributions to audit `Auto-Generated` translations and elevate them to `100% Manually Verified` status.
 
 | Language Code | Language Name | Verification Status | Rationale / Context |
 | :--- | :--- | :--- | :--- |
-| `en` | 🇬🇧 **English** | `100% Manually Verified` | Global default language (Verified by developer) |
-| `de` | 🇩🇪 **German** | `100% Manually Verified` | Developer's native language |
-| `fr` | 🇫🇷 **French** | `Auto-Generated` | Needs manual native review and polishing |
-| `es` | 🇪🇸 **Spanish** | `100% Manually Verified` | Manual native review by Alenia Studios |
-| `pt-BR` | 🇧🇷 **Portuguese (Brasil)** | `100% Manually Verified` | Manual native review by Alenia Studios |
-| `ru` | 🇷🇺 **Russian** | `Auto-Generated` | Needs manual native review and polishing |
-| `it` | 🇮🇹 **Italian** | `100% Manually Verified` | Manual native review by Alenia Studios |
-| `pl` | 🇵🇱 **Polish** | `Auto-Generated` | Needs manual native review and polishing |
-| `tr` | 🇹🇷 **Turkish** | `Auto-Generated` | Needs manual native review and polishing |
-| `nl` | 🇳🇱 **Dutch** | `Auto-Generated` | Needs manual native review and polishing |
-| `ja` | 🇯🇵 **Japanese** | `Auto-Generated` | Needs manual native review and polishing |
-| `ko` | 🇰🇷 **Korean** | `Auto-Generated` | Needs manual native review and polishing |
-| `pt` | 🇵🇹 **European Portuguese** | `100% Manually Verified` | Manual native review by Alenia Studios |
+| `en` | **English** | `100% Manually Verified` | Global default language (verified by developer) |
+| `de` | **German** | `100% Manually Verified` | Developer's native language |
+| `fr` | **French** | `Auto-Generated` | Needs manual native review and polishing |
+| `es` | **Spanish** | `100% Manually Verified` | Manual native review by Alenia Studios |
+| `pt-BR` | **Portuguese (Brazil)** | `100% Manually Verified` | Manual native review by Alenia Studios |
+| `ru` | **Russian** | `Auto-Generated` | Needs manual native review and polishing |
+| `it` | **Italian** | `100% Manually Verified` | Manual native review by Alenia Studios |
+| `pl` | **Polish** | `Auto-Generated` | Needs manual native review and polishing |
+| `tr` | **Turkish** | `Auto-Generated` | Needs manual native review and polishing |
+| `nl` | **Dutch** | `Auto-Generated` | Needs manual native review and polishing |
+| `ja` | **Japanese** | `Auto-Generated` | Needs manual native review and polishing |
+| `ko` | **Korean** | `Auto-Generated` | Needs manual native review and polishing |
+| `pt` | **European Portuguese** | `100% Manually Verified` | Manual native review by Alenia Studios |
+| `zh` | **Chinese (Simplified)** | `Auto-Generated` | Needs manual native review and polishing |
+| `uk` | **Ukrainian** | `Auto-Generated` | Needs manual native review and polishing |
 
 > [!WARNING]
 > **Autogeneration Quality Rule**
-> Any newly contributed languages must be marked as `"Auto-Generated"` in this table until fully reviewed and signed off by a native speaker in a pull request.
+> Any newly contributed languages must be marked as `Auto-Generated` in this table until fully reviewed and signed off by a native speaker in a pull request.
 
 ---
 
-## 🛠️ How to Translate KoalaSync
+## How to Translate KoalaSync
 
 Here is the exact step-by-step process for contributing translations.
 
 ### Step 1: Fork and Clone the Repository
-If you are an external contributor, start with the standard Open Source workflow:
+
+If you are an external contributor, start with the standard open-source workflow:
+
 1. Click the "Fork" button on GitHub to create your own copy of the repository.
 2. Clone your fork locally: `git clone https://github.com/YOUR-USERNAME/KoalaSync.git`
 3. Create a branch: `git checkout -b translation/my-language`
 
 ### Step 2: Translate the Extension
+
 The browser extension handles real-time syncing, settings, and popups.
-1. Navigate to [`extension/locales/`](file:///Users/koala/Documents/Workspaces/KoalaSync/extension/locales/).
-2. Edit an existing `[lang].json` or copy `en.json` to create a new one (e.g., `it.json`).
-3. Translate all the string values. **Do not change the JSON keys.**
+
+1. Navigate to `extension/locales/`.
+2. Edit an existing `[lang].json` or copy `en.json` to create a new one (for example, `it.json`).
+3. Translate all string values. **Do not change the JSON keys.**
 
 ### Step 3: Translate the Website
+
 The website hosts the landing page and invitation bridge.
-1. Navigate to [`website/locales/`](file:///Users/koala/Documents/Workspaces/KoalaSync/website/locales/).
+
+1. Navigate to `website/locales/`.
 2. Edit an existing `[lang].json` or copy `en.json` to create a new one.
-3. Translate all the string values. **Do not change the JSON keys.**
-4. If creating a **brand new language**, configure the metadata at the top of your JSON file:
-   ```json
-   {
-     "LANG_CODE": "it",
-     "HTML_CLASS": "lang-it",
-     "CANONICAL_PATH": "it/",
-     "LANG_TOGGLE_URL": "../",
-     "LANG_TOGGLE_TEXT": "EN"
-   }
-   ```
-5. If creating a **brand new language**, register it in `website/build.cjs` by adding it to the `languages` array.
+3. Translate all string values. **Do not change the JSON keys.**
+4. If creating a brand new language, configure the metadata at the top of your JSON file:
+
+```json
+{
+  "LANG_CODE": "it",
+  "HTML_CLASS": "lang-it",
+  "CANONICAL_PATH": "it/",
+  "LANG_TOGGLE_URL": "../",
+  "LANG_TOGGLE_TEXT": "EN"
+}
+```
+
+5. If creating a brand new language, register it in `website/build.cjs` by adding it to the `languages` array.
 
 ### Step 4: Verify Locally
+
 Ensure your JSON files are valid and all keys match the English baseline. Open your terminal in the KoalaSync root folder and run:
+
 ```bash
 # Tests the extension locales for missing keys or syntax errors
 node scripts/test-locales.cjs
@@ -83,23 +96,26 @@ node scripts/test-website-locales.mjs
 # Builds the website with your new translations
 node website/build.cjs
 ```
-*Note: If you receive any errors about missing keys or `TODO` placeholders, please fix them before submitting.*
+
+If you receive any errors about missing keys or placeholder strings, fix them before submitting.
 
 ### Step 5: Commit and Pull Request
-1. Open this `TRANSLATION.md` file and add/update your language in the **Supported Languages Dashboard** above. Mark it as `100% Manually Verified` if you are a native speaker.
+
+1. Open this `TRANSLATION.md` file and add or update your language in the **Supported Languages Dashboard** above. Mark it as `100% Manually Verified` only if it has been reviewed by a native speaker.
 2. Commit your changes: `git commit -m "Update Italian translations"`
 3. Push to your fork: `git push origin translation/my-language`
-4. Open a **Pull Request** on the main KoalaSync repository on GitHub.
+4. Open a pull request on the main KoalaSync repository on GitHub.
 
 ---
 
-## ⚖️ Strict Legal Exclusion Rule
+## Strict Legal Exclusion Rule
 
 Our legal pages have strict constraints to protect user privacy and avoid regulatory liabilities.
 
 > [!IMPORTANT]
-> **DO NOT TRANSLATE LEGAL DOCUMENTS**
-> The legal notice ([impressum.html](file:///Users/koala/Documents/Workspaces/KoalaSync/website/impressum.html)) and privacy policy ([datenschutz.html](file:///Users/koala/Documents/Workspaces/KoalaSync/website/datenschutz.html)) **MUST remain exclusively in English and German**.
-> 
-> *   **Rationale:** Legal compliance under the European Union General Data Protection Regulation (GDPR) and the German Digital Services Act (DDG). Offering automated translations of legally binding notices introduces compliance risks due to potential mistranslations of liability limits.
-> *   **Technical Fallback:** Our system automatically falls back to **English** for legal pages if a user visits them in an unsupported language, so you do not need to worry about this.
+> **Do Not Translate Legal Documents**
+> The legal notice (`website/impressum.html`) and privacy policy (`website/datenschutz.html`) **MUST remain exclusively in English and German**.
+>
+> **Rationale:** Legal compliance under the European Union General Data Protection Regulation (GDPR) and the German Digital Services Act (DDG). Offering automated translations of legally binding notices introduces compliance risks due to potential mistranslations of liability limits.
+>
+> **Technical fallback:** Our system automatically falls back to English for legal pages if a user visits them in an unsupported language, so you do not need to translate them.
diff --git a/extension/_locales/uk/messages.json b/extension/_locales/uk/messages.json
new file mode 100644
index 0000000..4e1fea2
--- /dev/null
+++ b/extension/_locales/uk/messages.json
@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Синхронізуйте відтворення відео на YouTube, Netflix, Emby, Jellyfin і будь-якому сайті HTML5 у режимі реального часу з друзями."
+  }
+}
diff --git a/extension/_locales/zh_CN/messages.json b/extension/_locales/zh_CN/messages.json
new file mode 100644
index 0000000..8b40486
--- /dev/null
+++ b/extension/_locales/zh_CN/messages.json
@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "与朋友实时同步YouTube、Netflix、Emby、Jellyfin和任何HTML5网站上的视频播放。"
+  }
+}
diff --git a/extension/i18n.js b/extension/i18n.js
index 9bfb2c3..026de47 100644
--- a/extension/i18n.js
+++ b/extension/i18n.js
@@ -1,5 +1,5 @@
 // extension/i18n.js
-export const SUPPORTED_LANGUAGES = ['en', 'de', 'fr', 'es', 'pt-BR', 'ru', 'it', 'pl', 'tr', 'nl', 'ja', 'ko', 'pt'];
+export const SUPPORTED_LANGUAGES = ['en', 'de', 'fr', 'es', 'it', 'nl', 'pl', 'pt', 'pt-BR', 'tr', 'ru', 'ja', 'ko', 'zh', 'uk'];
 export const DEFAULT_LANGUAGE = 'en';
 
 let activeDictionary = {};
diff --git a/extension/locales/de.json b/extension/locales/de.json
index 6703db2..5a1c219 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Zeitüberschreitung — nicht alle Teilnehmer haben die Episode geladen",
   "LOBBY_CANCEL_USER": "Vom Benutzer abgebrochen",
   "NOTIF_ERROR_TITLE": "KoalaSync-Fehler",
-  "FOOTER_SUPPORT": "☕ Kauf mir einen Kaffee",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Bewerten",
   "FOOTER_SUPPORT_PROMPT": "Gefällt dir KoalaSync? Hinterlasse eine Bewertung!",
   "LABEL_AUDIO_PROCESSING": "Audio-Verarbeitung",
diff --git a/extension/locales/en.json b/extension/locales/en.json
index b1ccc42..e69ad8c 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Timeout — not all peers loaded the episode",
   "LOBBY_CANCEL_USER": "Cancelled by user",
   "NOTIF_ERROR_TITLE": "KoalaSync Error",
-  "FOOTER_SUPPORT": "☕ Buy me a coffee",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Rate us",
   "FOOTER_SUPPORT_PROMPT": "Enjoying KoalaSync? Leave a review!",
   "LABEL_AUDIO_PROCESSING": "Audio Processing",
diff --git a/extension/locales/es.json b/extension/locales/es.json
index 6116724..36c0a18 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Tiempo de espera agotado: no todos los participantes cargaron el episodio",
   "LOBBY_CANCEL_USER": "Cancelado por el usuario",
   "NOTIF_ERROR_TITLE": "Error de KoalaSync",
-  "FOOTER_SUPPORT": "☕ Invítame a un café",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Valorar",
   "FOOTER_SUPPORT_PROMPT": "¿Te gusta KoalaSync? ¡Deja una reseña!",
   "LABEL_AUDIO_PROCESSING": "Procesamiento de audio",
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index e5e7122..0095d10 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Délai dépassé — tous les membres n'ont pas chargé l'épisode",
   "LOBBY_CANCEL_USER": "Annulé par l'utilisateur",
   "NOTIF_ERROR_TITLE": "Erreur KoalaSync",
-  "FOOTER_SUPPORT": "☕ Offre-moi un café",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Évaluer",
   "FOOTER_SUPPORT_PROMPT": "Tu aimes KoalaSync? Laisse un avis!",
   "LABEL_AUDIO_PROCESSING": "Traitement audio",
diff --git a/extension/locales/it.json b/extension/locales/it.json
index dccbeea..7c7c059 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Tempo scaduto: caricamento incompleto per alcuni partecipanti",
   "LOBBY_CANCEL_USER": "Annullato dall'utente",
   "NOTIF_ERROR_TITLE": "Errore KoalaSync",
-  "FOOTER_SUPPORT": "☕ Offrimi un caffè",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Valutaci",
   "FOOTER_SUPPORT_PROMPT": "Ti piace KoalaSync? Lascia una recensione!",
   "LABEL_AUDIO_PROCESSING": "Elaborazione Audio",
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index f6b6a04..77f3222 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "タイムアウト — 一部のメンバーがエピソードを読み込めませんでした",
   "LOBBY_CANCEL_USER": "ユーザーによってキャンセルされました",
   "NOTIF_ERROR_TITLE": "KoalaSyncエラー",
-  "FOOTER_SUPPORT": "☕ コーヒーをおごってね",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ 評価する",
   "FOOTER_SUPPORT_PROMPT": "KoalaSyncはいかが？レビューを書いてください！",
   "LABEL_AUDIO_PROCESSING": "オーディオ処理",
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index 517c94f..e3dc411 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "시간 초과 — 모든 피어가 에피소드를 로드하지 못했습니다",
   "LOBBY_CANCEL_USER": "사용자에 의해 취소됨",
   "NOTIF_ERROR_TITLE": "KoalaSync 오류",
-  "FOOTER_SUPPORT": "☕ 커피 한 잔 사주세요",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ 평가하기",
   "FOOTER_SUPPORT_PROMPT": "KoalaSync가 마음에 드세요? 리뷰를 남겨주세요!",
   "LABEL_AUDIO_PROCESSING": "오디오 처리",
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index 3f29dc2..83c5583 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Time-out — niet alle deelnemers hebben de aflevering geladen",
   "LOBBY_CANCEL_USER": "Geannuleerd door gebruiker",
   "NOTIF_ERROR_TITLE": "KoalaSync-fout",
-  "FOOTER_SUPPORT": "☕ Trakteer op een koffie",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Beoordelen",
   "FOOTER_SUPPORT_PROMPT": "Vind je KoalaSync leuk? Laat een review achter!",
   "LABEL_AUDIO_PROCESSING": "Audioverwerking",
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index fa7d561..53f3ef3 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Limit czasu — nie wszyscy uczestnicy załadowali odcinek",
   "LOBBY_CANCEL_USER": "Anulowane przez użytkownika",
   "NOTIF_ERROR_TITLE": "Błąd KoalaSync",
-  "FOOTER_SUPPORT": "☕ Postaw kawę",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Oceń",
   "FOOTER_SUPPORT_PROMPT": "Podoba Ci się KoalaSync? Zostaw recenzję!",
   "LABEL_AUDIO_PROCESSING": "Przetwarzanie dźwięku",
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index c6e178f..64b38eb 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Tempo limite — nem todos carregaram o episódio",
   "LOBBY_CANCEL_USER": "Cancelado pelo usuário",
   "NOTIF_ERROR_TITLE": "Erro no KoalaSync",
-  "FOOTER_SUPPORT": "☕ Me pague um café",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Avaliar",
   "FOOTER_SUPPORT_PROMPT": "Gostou do KoalaSync? Deixe uma avaliação!",
   "LABEL_AUDIO_PROCESSING": "Processamento de áudio",
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index 054bd5b..e9da913 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Tempo limite — alguns participantes não carregaram o episódio",
   "LOBBY_CANCEL_USER": "Cancelado pelo utilizador",
   "NOTIF_ERROR_TITLE": "Erro no KoalaSync",
-  "FOOTER_SUPPORT": "☕ Oferece-me um café",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Avaliar",
   "FOOTER_SUPPORT_PROMPT": "Gostas do KoalaSync? Deixa uma avaliação!",
   "LABEL_AUDIO_PROCESSING": "Processamento de Áudio",
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index c7429d7..0e9abfb 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Время ожидания истекло — не все участники загрузили серию",
   "LOBBY_CANCEL_USER": "Отменено пользователем",
   "NOTIF_ERROR_TITLE": "Ошибка KoalaSync",
-  "FOOTER_SUPPORT": "☕ Угости кофе",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Оценить",
   "FOOTER_SUPPORT_PROMPT": "Нравится KoalaSync? Оставьте отзыв!",
   "LABEL_AUDIO_PROCESSING": "Обработка звука",
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index 855e35a..fd7e4eb 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -181,7 +181,7 @@
   "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Zaman aşımı — tüm bağlantılar bölümü yüklemedi",
   "LOBBY_CANCEL_USER": "Kullanıcı tarafından iptal edildi",
   "NOTIF_ERROR_TITLE": "KoalaSync Hatası",
-  "FOOTER_SUPPORT": "☕ Bana kahve ısmarla",
+  "FOOTER_SUPPORT": "Support KoalaSync",
   "FOOTER_REVIEW": "★ Değerlendir",
   "FOOTER_SUPPORT_PROMPT": "KoalaSync'i beğendin mi? Bir yorum bırak!",
   "LABEL_AUDIO_PROCESSING": "Ses işleme",
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
new file mode 100644
index 0000000..ddc3a8d
--- /dev/null
+++ b/extension/locales/uk.json
@@ -0,0 +1,212 @@
+{
+  "LANG_CODE": "uk",
+  "HTML_CLASS": "lang-uk",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Кімната",
+  "TAB_ROOM_TOOLTIP": "Налаштування кімнати та підключення",
+  "TAB_SYNC": "Синхронізувати",
+  "TAB_SYNC_TOOLTIP": "Елементи керування синхронізацією відео та віддалені дії",
+  "TAB_SETTINGS": "Налаштування",
+  "TAB_SETTINGS_TOOLTIP": "Параметри розширення",
+  "TAB_STATUS": "Статус",
+  "TAB_STATUS_TOOLTIP": "Розширена діагностика та журнали",
+  "BTN_CREATE_ROOM": "+ Створити нову кімнату",
+  "MANUAL_CONNECT_HEADER": "Ручне підключення / Додатково",
+  "LABEL_SERVER": "Сервер",
+  "BTN_SERVER_OFFICIAL": "Офіційний",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Використовуйте офіційний надійний сервер",
+  "BTN_SERVER_CUSTOM": "Власний",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Підключіться до власного серверу, розміщеного на власному хостингу",
+  "PLACEHOLDER_SERVER_URL": "wss://your-server:3000",
+  "LABEL_ROOM_ID": "ID кімнати",
+  "LABEL_ROOM_ID_TOOLTIP": "Унікальний ідентифікатор вашої кімнати синхронізації",
+  "PLACEHOLDER_ROOM_ID": "Введіть Room ID",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "Унікальний ідентифікатор кімнати, до якої ви хочете приєднатися",
+  "LABEL_PASSWORD": "Пароль (необов'язково)",
+  "LABEL_PASSWORD_TOOLTIP": "Додатковий пароль для обмеження доступу до кімнати",
+  "PLACEHOLDER_PASSWORD": "Пароль кімнати (необов'язково)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Пароль для кімнати (залиште порожнім, якщо немає)",
+  "BTN_JOIN_ROOM": "Приєднатися / Створити кімнату",
+  "BTN_JOIN_ROOM_TOOLTIP": "Підключіться до кімнати",
+  "LABEL_PUBLIC_ROOMS": "Громадські кімнати",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Список загальнодоступних кімнат на цьому сервері",
+  "BTN_REFRESH": "ОНОВИТИ",
+  "BTN_REFRESH_TOOLTIP": "Оновити список громадських кімнат",
+  "PUBLIC_ROOMS_REFRESHING": "Оновлення...",
+  "BTN_REFRESH_COOLDOWN": "ЧЕКАЙТЕ {seconds}s",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "Оновлення списку кімнат охолоджується. Повторіть спробу в {seconds}s.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Оновлення громадських кімнат. Наступне оновлення доступне в {seconds}s.",
+  "LABEL_ACTIVE_ROOM": "Активна кімната",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "Кімната, до якої ви зараз підключені",
+  "ACTIVE_ROOM_NONE": "ЖОДНОГО",
+  "ACTIVE_SERVER_OFFICIAL": "Офіційний сервер",
+  "LABEL_INVITE_LINK": "Посилання на запрошення",
+  "LABEL_INVITE_LINK_TOOLTIP": "Поділіться цим посиланням з друзями, щоб вони могли приєднатися",
+  "LABEL_PEERS_IN_ROOM": "Учасники в кімнаті",
+  "LABEL_PEERS_IN_ROOM_TOOLTIP": "Інші користувачі зараз підключені до цієї кімнати",
+  "NO_PEERS_CONNECTED": "Немає підключених однорангових пристроїв",
+  "BTN_LEAVE_ROOM": "Вийти з кімнати",
+  "LABEL_SELECT_VIDEO": "Виберіть Відео",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Виберіть вкладку браузера, яка містить відео для синхронізації",
+  "OPTION_SELECT_TAB": "-- Виберіть вкладку --",
+  "LABEL_REMOTE_CONTROL": "Пульт дистанційного керування",
+  "BTN_COPY_INVITE": "📋 Посилання на запрошення",
+  "BTN_COPY_INVITE_TOOLTIP": "Копіювати посилання для запрошення",
+  "BTN_PLAY": "▶ Відтворити",
+  "BTN_PLAY_TOOLTIP": "Надішліть усім команду Play",
+  "BTN_PAUSE": "⏸ Пауза",
+  "BTN_PAUSE_TOOLTIP": "Надішліть команду паузи всім",
+  "BTN_SYNC": "⚡ СИНХР",
+  "BTN_SYNC_TOOLTIP": "Змусити всіх користувачів синхронізуватися",
+  "OPTION_JUMP_TO_OTHERS": "Перейти до інших",
+  "OPTION_JUMP_TO_ME": "Перейти до мене",
+  "OPTION_JUMP_MODE_TOOLTIP": "Виберіть ціль синхронізації",
+  "LABEL_LAST_ACTIVITY": "Статус останньої дії",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Показує останню команду відтворення, паузи або перемотування",
+  "NO_RECENT_COMMANDS": "Немає останніх команд",
+  "LOBBY_HEADER": "ЕПІЗОДНЕ ЛОБІ",
+  "LOBBY_WAITING_FOR": "🎬 Чекаємо: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "Очікування учасників...",
+  "BTN_SKIP_PLAY": "Все одно пропустити та відтворити",
+  "BTN_SKIP_PLAY_TOOLTIP": "Скасуйте лобі та все одно відтворюйте",
+  "LOBBY_CONNECT_FIRST": "Спочатку підключіться до кімнати",
+  "LOBBY_CONNECT_FIRST_DESC": "Вам потрібно приєднатися до кімнати за посиланням із запрошенням або створити нову, щоб синхронізувати відео.",
+  "BTN_CREATE_ROOM_ALT": "Створити нову кімнату",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Створіть нову випадкову кімнату та приєднайтеся до неї",
+  "LABEL_USERNAME": "Ваше ім'я користувача",
+  "LABEL_USERNAME_TOOLTIP": "Ім'я користувача допомагає іншим ідентифікувати вас.",
+  "PLACEHOLDER_USERNAME": "Анонімна коала",
+  "LABEL_HIDE_CLUTTER": "Приховати безладні вкладки",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Відфільтровує вкладки, не пов’язані з відео, і непов’язані домени, щоб зберегти список чистим",
+  "LABEL_AUTO_SYNC_NEXT": "Автоматична синхронізація наступного епізоду",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Автоматично призупиняється та чекає на всіх однорангових пристроїв, коли епізод зміниться, а потім синхронізація починається разом.",
+  "LABEL_AUTO_COPY_INVITE": "Автоматичне копіювання посилання для запрошення",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Автоматично копіює посилання запрошення в буфер обміну під час створення нової кімнати.",
+  "LABEL_NOTIFICATIONS": "Сповіщення браузера",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Показує рідні системні сповіщення, коли хтось приєднується/виходить або відтворює/призупиняє.",
+  "LABEL_LANGUAGE": "Мова програми",
+  "LABEL_LANGUAGE_TOOLTIP": "Виберіть бажану мову розширення",
+  "LABEL_TROUBLESHOOTING": "Усунення несправностей",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Інструменти для вирішення проблем з підключенням",
+  "BTN_REGEN_ID": "Регенерувати Peer ID",
+  "BTN_REGEN_ID_TOOLTIP": "Повторно згенеруйте свій внутрішній ідентифікатор і повторно підключіться",
+  "REGEN_ID_DESC": "Використовуйте це, якщо ви бачите помилку \"Дублікати ідентифікатора\".",
+  "REGEN_ID_OTHER_ISSUE": "Інша проблема? Відкрийте випуск GitHub",
+  "LABEL_CONN_STATUS": "Статус підключення",
+  "LABEL_CONN_STATUS_TOOLTIP": "Поточний стан підключення WebSocket",
+  "CONN_STATUS_DISCONNECTED": "Відключено",
+  "BTN_RETRY": "ПОВТОРИТИ",
+  "BTN_RETRY_TOOLTIP": "Спробуйте повторно підключитися до сервера",
+  "BTN_COPY_LOGS": "Копіювати журнали",
+  "BTN_COPY_LOGS_TOOLTIP": "Скопіюйте журнали в буфер обміну для спільного використання",
+  "LABEL_VIDEO_DEBUG": "Інформація про налагодження відео",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Технічні відомості про поточний вибраний елемент відео",
+  "VIDEO_DEBUG_EMPTY": "Вкладка не вибрана або відео не виявлено.",
+  "LABEL_HISTORY": "Повна історія дій",
+  "LABEL_HISTORY_TOOLTIP": "Хронологічний журнал усіх команд синхронізації в кімнаті",
+  "HISTORY_EMPTY": "Активності ще немає",
+  "LABEL_LOGS": "Журнали (останні 50)",
+  "LABEL_LOGS_TOOLTIP": "Журнали технічного підключення для налагодження",
+  "BTN_CLEAR": "Очистити",
+  "BTN_CLEAR_TOOLTIP": "Очистити журнал",
+  "LABEL_GITHUB": "Репозиторій GitHub",
+  "BTN_ONBOARDING_SKIP": "Пропустити",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Пропустити підручник",
+  "BTN_ONBOARDING_NEXT": "Далі",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Перейти до наступного кроку",
+  "ONBOARDING_1_TITLE": "Ласкаво просимо до KoalaSync!",
+  "ONBOARDING_1_TEXT": "Дивіться відео разом у ідеальній синхронізації — де б ви не були. Давайте зробимо короткий тур!",
+  "ONBOARDING_2_TITLE": "1. Створіть кімнату",
+  "ONBOARDING_2_TEXT": "Почніть тут. Створіть кімнату та поділіться посиланням запрошення з друзями.",
+  "ONBOARDING_3_TITLE": "2. Виберіть Відео",
+  "ONBOARDING_3_TEXT": "Перейдіть сюди, щоб вибрати відео, яке потрібно синхронізувати. Відтворення, пауза та пошук — усі залишаються синхронізованими.",
+  "ONBOARDING_4_TITLE": "3. Персоналізація",
+  "ONBOARDING_4_TEXT": "Виберіть цікаве ім’я користувача, щоб ваші друзі знали, хто ви.",
+  "ONBOARDING_5_TITLE": "Усе готово!",
+  "ONBOARDING_5_TEXT": "Час взяти попкорн. Приємного перегляду разом!",
+  "ERR_CONN_TIMEOUT": "Час очікування підключення минув. Спробуйте ще раз.",
+  "ERR_INVALID_SERVER_URL": "Недійсний формат URL-адреси сервера.",
+  "ERR_IDENTITY_NOT_LOADED": "Посвідчення особи ще не завантажено. Зачекайте хвилинку та повторіть спробу.",
+  "ERR_NO_PEERS_TIME": "Немає інших аналогів із відомим часом. Переключіться на «Перейти до мене».",
+  "ERR_NO_VIDEO_TAB": "Не вдалося підключитися до вкладки відео.",
+  "ERR_SELECT_VIDEO": "Спочатку виберіть відео!",
+  "TOAST_INVITE_COPIED": "Посилання на запрошення скопійовано!",
+  "TOAST_COPY_FAILED": "Не вдалося скопіювати в буфер обміну",
+  "TOAST_LOBBY_SKIPPED": "Лобі епізоду пропущено.",
+  "TOAST_LOBBY_SKIP_FAILED": "Не вдалося пропустити лобі.",
+  "TOAST_LOGS_COPIED": "Скопійовано!",
+  "TOAST_PEER_JOINED": "{name} приєднався до кімнати",
+  "TOAST_PEER_LEFT": "{name} вийшов з кімнати",
+  "TOAST_PEER_ACTION": "{name} {action}",
+  "STATUS_CONNECTED": "Підключено",
+  "STATUS_RECONNECTING": "Повторне підключення...",
+  "STATUS_CONNECTING": "Підключення...",
+  "STATUS_FAILED": "Не вдалося",
+  "STATUS_DISCONNECTED": "Відключено",
+  "BTN_STATE_JOINING": "🚀 Приєднуюсь...",
+  "BTN_STATE_RECONNECTING": "🔄 Повторне підключення...",
+  "BTN_STATE_PLAYING": "▶ Грає...",
+  "BTN_STATE_PAUSING": "⏸ Призупинення...",
+  "BTN_STATE_SYNCING_GROUP": "Синхронізація з групою ({time})...",
+  "BTN_STATE_SYNCING": "Синхронізація...",
+  "BTN_STATE_SYNCED": "✅ Синхронізовано!",
+  "NOTIF_PLAY": "почав відтворення",
+  "NOTIF_PAUSE": "призупинено відтворення",
+  "NOTIF_SEEK": "перемотав відео",
+  "NOTIF_FORCE_PREPARE": "почав примусову синхронізацію",
+  "NOTIF_FORCE_EXECUTE": "синхронізував усіх",
+  "DEBUG_NO_TAB": "Цільова вкладка не вибрана.",
+  "DEBUG_COMM_FAIL": "Не вдалося зв’язатися з відео вкладки.",
+  "EMPTY_PEERS_TITLE": "Учасників ще немає",
+  "EMPTY_PEERS_HINT": "Поділіться своїм запрошенням, щоб почати",
+  "EMPTY_HISTORY_TITLE": "Активності ще немає",
+  "EMPTY_HISTORY_HINT": "Відтворення, призупинення або перемотування, щоб побачити історію",
+  "EMPTY_LOGS_TITLE": "Без журналів",
+  "EMPTY_LOGS_HINT": "Тут відображатимуться події підключення",
+  "EMPTY_ROOMS_TITLE": "Немає активних кімнат",
+  "EMPTY_ROOMS_HINT": "Створіть кімнату або оновіть, щоб знайти загальнодоступні",
+  "LABEL_YOU": "Ви",
+  "ONBOARDING_DONE": "Готово!",
+  "LABEL_LOBBY_PEER_READY": "Готовий",
+  "LABEL_LOBBY_PEER_LOADING": "Завантаження...",
+  "LABEL_PASSWORD_PROTECTED": "Захищено паролем",
+  "LABEL_PEERS_COUNT": "{count} учасників",
+  "LABEL_CUSTOM_SERVER": "Спеціальний сервер",
+  "BTN_STATE_CREATING": "🚀 Створення кімнати...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Помилка синхронізації епізоду",
+  "NOTIF_LOBBY_CANCEL_MSG": "Автоматичну синхронізацію скасовано: {reason}. Можливо, вам знадобиться виконати синхронізацію вручну.",
+  "LOBBY_CANCEL_TIMEOUT": "Час очікування",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Тайм-аут (відновлено)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Усі інші учасники вийшли",
+  "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Тайм-аут — не всі вузли завантажили епізод",
+  "LOBBY_CANCEL_USER": "Скасовано користувачем",
+  "NOTIF_ERROR_TITLE": "Помилка KoalaSync",
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "FOOTER_REVIEW": "★ Оцініть нас",
+  "FOOTER_SUPPORT_PROMPT": "Подобається KoalaSync? Залиште відгук!",
+  "LABEL_AUDIO_PROCESSING": "Обробка аудіо",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Застосуйте звукові ефекти, такі як стиснення, до відтворення відео",
+  "AUDIO_OPEN_SETTINGS": "Відкрити",
+  "NEW_FEATURE_AUDIO": "Новинка: обробка звуку — спробуйте компресор!",
+  "AUDIO_BACK": "← Назад",
+  "AUDIO_PAGE_TITLE": "Параметри звуку",
+  "AUDIO_MASTER_TOGGLE": "Обробка аудіо",
+  "AUDIO_COMPRESSOR": "Компресор",
+  "AUDIO_COMPRESSOR_ENABLE": "Увімкнено",
+  "AUDIO_PRESET": "Попереднє налаштування",
+  "AUDIO_PRESET_RECOMMENDED": "Рекомендовано",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Динамічний діапазон",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Покращення голосу",
+  "AUDIO_PRESET_SMOOTH": "Плавний",
+  "AUDIO_PRESET_CUSTOM": "Власний",
+  "AUDIO_PARAM_THRESHOLD": "Поріг",
+  "AUDIO_PARAM_KNEE": "Коліно",
+  "AUDIO_PARAM_RATIO": "Співвідношення",
+  "AUDIO_PARAM_ATTACK": "Атака",
+  "AUDIO_PARAM_RELEASE": "Спад",
+  "AUDIO_EQUALIZER": "Еквалайзер",
+  "AUDIO_COMING_SOON": "Скоро буде",
+  "BTN_RESTART_TOUR": "Перезапустіть підручник",
+  "BTN_RESTART_TOUR_TOOLTIP": "Перезапустіть навчальний посібник із адаптації",
+  "HINT_SELECT_VIDEO": "Виберіть своє відео тут!"
+}
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
new file mode 100644
index 0000000..40ab7d4
--- /dev/null
+++ b/extension/locales/zh.json
@@ -0,0 +1,212 @@
+{
+  "LANG_CODE": "zh",
+  "HTML_CLASS": "lang-zh",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "房间",
+  "TAB_ROOM_TOOLTIP": "房间设置和连接",
+  "TAB_SYNC": "同步",
+  "TAB_SYNC_TOOLTIP": "视频同步控制和远程操作",
+  "TAB_SETTINGS": "设置",
+  "TAB_SETTINGS_TOOLTIP": "扩展首选项",
+  "TAB_STATUS": "状态",
+  "TAB_STATUS_TOOLTIP": "高级诊断和日志",
+  "BTN_CREATE_ROOM": "+ 创建新房间",
+  "MANUAL_CONNECT_HEADER": "手动连接/高级",
+  "LABEL_SERVER": "服务器",
+  "BTN_SERVER_OFFICIAL": "官方的",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "使用官方可靠服务器",
+  "BTN_SERVER_CUSTOM": "自定义",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "连接到您自己的自托管服务器",
+  "PLACEHOLDER_SERVER_URL": "wss://your-server:3000",
+  "LABEL_ROOM_ID": "房间 ID",
+  "LABEL_ROOM_ID_TOOLTIP": "您的同步室的唯一标识符",
+  "PLACEHOLDER_ROOM_ID": "输入Room ID",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "您要加入的房间的唯一ID",
+  "LABEL_PASSWORD": "密码（可选）",
+  "LABEL_PASSWORD_TOOLTIP": "可选密码以限制房间访问",
+  "PLACEHOLDER_PASSWORD": "房间密码（可选）",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "房间密码（无则留空）",
+  "BTN_JOIN_ROOM": "加入/创建房间",
+  "BTN_JOIN_ROOM_TOOLTIP": "连接到房间",
+  "LABEL_PUBLIC_ROOMS": "公共房间",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "该服务器上公开可用的房间列表",
+  "BTN_REFRESH": "刷新",
+  "BTN_REFRESH_TOOLTIP": "刷新公共房间列表",
+  "PUBLIC_ROOMS_REFRESHING": "刷新中...",
+  "BTN_REFRESH_COOLDOWN": "等等{seconds}",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "房间列表刷新正在冷却。在 {seconds} 中重试。",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "公共房间列表刷新冷却中。下次刷新将在 {seconds} 后可用。",
+  "LABEL_ACTIVE_ROOM": "活动室",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "您当前连接的房间",
+  "ACTIVE_ROOM_NONE": "没有任何",
+  "ACTIVE_SERVER_OFFICIAL": "官方服务器",
+  "LABEL_INVITE_LINK": "邀请链接",
+  "LABEL_INVITE_LINK_TOOLTIP": "与朋友分享此链接，以便他们可以加入",
+  "LABEL_PEERS_IN_ROOM": "房间里的同伴",
+  "LABEL_PEERS_IN_ROOM_TOOLTIP": "当前连接到该房间的其他用户",
+  "NO_PEERS_CONNECTED": "没有对等点连接",
+  "BTN_LEAVE_ROOM": "离开房间",
+  "LABEL_SELECT_VIDEO": "选择视频",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "选择包含要同步的视频的浏览器选项卡",
+  "OPTION_SELECT_TAB": "-- 选择一个选项卡 --",
+  "LABEL_REMOTE_CONTROL": "遥控",
+  "BTN_COPY_INVITE": "📋 邀请链接",
+  "BTN_COPY_INVITE_TOOLTIP": "复制邀请链接",
+  "BTN_PLAY": "▶ 播放",
+  "BTN_PLAY_TOOLTIP": "向所有人发送播放命令",
+  "BTN_PAUSE": "⏸ 暂停",
+  "BTN_PAUSE_TOOLTIP": "向所有人发送暂停命令",
+  "BTN_SYNC": "⚡ 同步",
+  "BTN_SYNC_TOOLTIP": "强制所有用户同步",
+  "OPTION_JUMP_TO_OTHERS": "跳转到其他",
+  "OPTION_JUMP_TO_ME": "跳到我这里",
+  "OPTION_JUMP_MODE_TOOLTIP": "选择同步目标",
+  "LABEL_LAST_ACTIVITY": "上次活动状态",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "显示最近的播放、暂停或跳转命令",
+  "NO_RECENT_COMMANDS": "没有最近的命令",
+  "LOBBY_HEADER": "剧集大厅",
+  "LOBBY_WAITING_FOR": "🎬 等待：“{title}”",
+  "LOBBY_WAITING_PEERS": "等待同行...",
+  "BTN_SKIP_PLAY": "仍然跳过并播放",
+  "BTN_SKIP_PLAY_TOOLTIP": "取消大厅并继续播放",
+  "LOBBY_CONNECT_FIRST": "首先连接到房间",
+  "LOBBY_CONNECT_FIRST_DESC": "您需要通过邀请链接加入房间或创建一个新房间来同步视频。",
+  "BTN_CREATE_ROOM_ALT": "创建新房间",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "创建一个新的随机房间并加入它",
+  "LABEL_USERNAME": "您的用户名",
+  "LABEL_USERNAME_TOOLTIP": "用户名可以帮助其他人识别您。",
+  "PLACEHOLDER_USERNAME": "无名考拉",
+  "LABEL_HIDE_CLUTTER": "隐藏杂乱标签",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "过滤掉非视频选项卡和不相关的域以保持列表干净",
+  "LABEL_AUTO_SYNC_NEXT": "自动同步下一集",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "当情节发生变化时，自动暂停并等待所有对等点，然后一起开始同步。",
+  "LABEL_AUTO_COPY_INVITE": "自动复制邀请链接",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "创建新房间时，自动将邀请链接复制到剪贴板。",
+  "LABEL_NOTIFICATIONS": "浏览器通知",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "当有人加入/离开或播放/暂停时显示本机系统通知。",
+  "LABEL_LANGUAGE": "应用程序语言",
+  "LABEL_LANGUAGE_TOOLTIP": "选择您喜欢的扩展语言",
+  "LABEL_TROUBLESHOOTING": "故障排除",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "用于修复连接问题的工具",
+  "BTN_REGEN_ID": "再生Peer ID",
+  "BTN_REGEN_ID_TOOLTIP": "重新生成您的内部 ID 并重新连接",
+  "REGEN_ID_DESC": "如果您看到“重复身份”错误，请使用此选项。",
+  "REGEN_ID_OTHER_ISSUE": "其他问题？打开 GitHub 问题",
+  "LABEL_CONN_STATUS": "连接状态",
+  "LABEL_CONN_STATUS_TOOLTIP": "当前WebSocket连接状态",
+  "CONN_STATUS_DISCONNECTED": "已断开连接",
+  "BTN_RETRY": "重试",
+  "BTN_RETRY_TOOLTIP": "尝试重新连接服务器",
+  "BTN_COPY_LOGS": "复制日志",
+  "BTN_COPY_LOGS_TOOLTIP": "将日志复制到剪贴板以便共享",
+  "LABEL_VIDEO_DEBUG": "视频调试信息",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "有关当前所选视频元素的技术详细信息",
+  "VIDEO_DEBUG_EMPTY": "未选择任何选项卡或检测到视频。",
+  "LABEL_HISTORY": "完整的行动历史",
+  "LABEL_HISTORY_TOOLTIP": "房间内所有同步命令的时间日志",
+  "HISTORY_EMPTY": "还没有活动",
+  "LABEL_LOGS": "日志（最后 50 条）",
+  "LABEL_LOGS_TOOLTIP": "用于调试的技术连接日志",
+  "BTN_CLEAR": "清除",
+  "BTN_CLEAR_TOOLTIP": "清除日志输出",
+  "LABEL_GITHUB": "GitHub 存储库",
+  "BTN_ONBOARDING_SKIP": "跳过",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "跳过教程",
+  "BTN_ONBOARDING_NEXT": "下一个",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "进入下一步",
+  "ONBOARDING_1_TITLE": "欢迎来到KoalaSync！",
+  "ONBOARDING_1_TEXT": "无论您身在何处，都能完美同步地一起观看视频。让我们快速浏览一下吧！",
+  "ONBOARDING_2_TITLE": "1. 创建房间",
+  "ONBOARDING_2_TEXT": "从这里开始。创建一个房间并与您的朋友分享邀请链接。",
+  "ONBOARDING_3_TITLE": "2. 选择视频",
+  "ONBOARDING_3_TEXT": "导航此处选择您要同步的视频。播放、暂停和搜索——每个人都保持同步。",
+  "ONBOARDING_4_TITLE": "3. 个性化",
+  "ONBOARDING_4_TEXT": "选择一个有趣的用户名，以便您的朋友知道您是谁。",
+  "ONBOARDING_5_TITLE": "你都准备好了！",
+  "ONBOARDING_5_TEXT": "是时候去买点爆米花了。一起观赏吧！",
+  "ERR_CONN_TIMEOUT": "连接超时。请再试一次。",
+  "ERR_INVALID_SERVER_URL": "服务器 URL 格式无效。",
+  "ERR_IDENTITY_NOT_LOADED": "身份尚未加载。稍等片刻，然后重试。",
+  "ERR_NO_PEERS_TIME": "没有其他已知时间的同行。切换到“跳到我这里”。",
+  "ERR_NO_VIDEO_TAB": "无法连接到视频选项卡。",
+  "ERR_SELECT_VIDEO": "请先选择视频！",
+  "TOAST_INVITE_COPIED": "邀请链接已复制！",
+  "TOAST_COPY_FAILED": "无法复制到剪贴板",
+  "TOAST_LOBBY_SKIPPED": "剧集大厅已跳过。",
+  "TOAST_LOBBY_SKIP_FAILED": "无法跳过大厅。",
+  "TOAST_LOGS_COPIED": "复制了！",
+  "TOAST_PEER_JOINED": "{name} 加入房间",
+  "TOAST_PEER_LEFT": "{name} 离开房间",
+  "TOAST_PEER_ACTION": "{name} {action}",
+  "STATUS_CONNECTED": "已连接",
+  "STATUS_RECONNECTING": "正在重新连接...",
+  "STATUS_CONNECTING": "正在连接...",
+  "STATUS_FAILED": "失败的",
+  "STATUS_DISCONNECTED": "已断开连接",
+  "BTN_STATE_JOINING": "🚀 正在加入...",
+  "BTN_STATE_RECONNECTING": "🔄 正在重新连接...",
+  "BTN_STATE_PLAYING": "▶ 播放中...",
+  "BTN_STATE_PAUSING": "⏸ 暂停...",
+  "BTN_STATE_SYNCING_GROUP": "正在同步到群组 ({time})...",
+  "BTN_STATE_SYNCING": "正在同步...",
+  "BTN_STATE_SYNCED": "✅ 已同步！",
+  "NOTIF_PLAY": "开始播放",
+  "NOTIF_PAUSE": "暂停播放",
+  "NOTIF_SEEK": "跳转视频",
+  "NOTIF_FORCE_PREPARE": "开始强制同步",
+  "NOTIF_FORCE_EXECUTE": "同步所有人",
+  "DEBUG_NO_TAB": "未选择目标选项卡。",
+  "DEBUG_COMM_FAIL": "无法与标签视频通信。",
+  "EMPTY_PEERS_TITLE": "还没有同行",
+  "EMPTY_PEERS_HINT": "分享您的邀请链接以开始使用",
+  "EMPTY_HISTORY_TITLE": "还没有活动",
+  "EMPTY_HISTORY_HINT": "播放、暂停或跳转以查看历史",
+  "EMPTY_LOGS_TITLE": "无日志",
+  "EMPTY_LOGS_HINT": "连接事件将出现在这里",
+  "EMPTY_ROOMS_TITLE": "没有活动房间",
+  "EMPTY_ROOMS_HINT": "创建房间或刷新以查找公共房间",
+  "LABEL_YOU": "你",
+  "ONBOARDING_DONE": "完毕！",
+  "LABEL_LOBBY_PEER_READY": "准备好",
+  "LABEL_LOBBY_PEER_LOADING": "加载中...",
+  "LABEL_PASSWORD_PROTECTED": "密码保护",
+  "LABEL_PEERS_COUNT": "{count} 同行",
+  "LABEL_CUSTOM_SERVER": "定制服务器",
+  "BTN_STATE_CREATING": "🚀 正在创建房间...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — 剧集同步失败",
+  "NOTIF_LOBBY_CANCEL_MSG": "自动同步取消：{reason}。您可能需要手动同步。",
+  "LOBBY_CANCEL_TIMEOUT": "暂停",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "超时（已恢复）",
+  "LOBBY_CANCEL_PEERS_LEFT": "所有其他同伴都离开了",
+  "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "超时——并非所有同行都加载了该剧集",
+  "LOBBY_CANCEL_USER": "已被用户取消",
+  "NOTIF_ERROR_TITLE": "KoalaSync 错误",
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "FOOTER_REVIEW": "★ 评价我们",
+  "FOOTER_SUPPORT_PROMPT": "喜欢 KoalaSync 吗？留下评论！",
+  "LABEL_AUDIO_PROCESSING": "音频处理",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "将压缩等音频效果应用于视频播放",
+  "AUDIO_OPEN_SETTINGS": "打开",
+  "NEW_FEATURE_AUDIO": "新功能：音频处理 - 尝试压缩器！",
+  "AUDIO_BACK": "← 返回",
+  "AUDIO_PAGE_TITLE": "音频设置",
+  "AUDIO_MASTER_TOGGLE": "音频处理",
+  "AUDIO_COMPRESSOR": "压缩器",
+  "AUDIO_COMPRESSOR_ENABLE": "启用",
+  "AUDIO_PRESET": "预设",
+  "AUDIO_PRESET_RECOMMENDED": "推荐",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "动态范围",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "声音增强",
+  "AUDIO_PRESET_SMOOTH": "平滑",
+  "AUDIO_PRESET_CUSTOM": "自定义",
+  "AUDIO_PARAM_THRESHOLD": "阈值",
+  "AUDIO_PARAM_KNEE": "拐点",
+  "AUDIO_PARAM_RATIO": "比率",
+  "AUDIO_PARAM_ATTACK": "起音",
+  "AUDIO_PARAM_RELEASE": "释放",
+  "AUDIO_EQUALIZER": "均衡器",
+  "AUDIO_COMING_SOON": "即将推出",
+  "BTN_RESTART_TOUR": "重启教程",
+  "BTN_RESTART_TOUR_TOOLTIP": "重新启动入门教程",
+  "HINT_SELECT_VIDEO": "在这里选择您的视频！"
+}
diff --git a/extension/popup.html b/extension/popup.html
index dc2e31a..47411da 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -584,6 +584,8 @@
                 <option value="nl">🇳🇱 Nederlands</option>
                 <option value="ja">🇯🇵 日本語</option>
                 <option value="ko">🇰🇷 한국어</option>
+                <option value="zh">🇨🇳 中文</option>
+                <option value="uk">🇺🇦 Українська</option>
                 <option value="pt">🇵🇹 Português (Portugal)</option>
             </select>
         </div>
@@ -600,7 +602,7 @@
             <div style="font-size: 9px; color: var(--text-muted); opacity: 0.6; margin-bottom: 6px; line-height: 1.3;" data-i18n="FOOTER_SUPPORT_PROMPT">Enjoying KoalaSync? Leave a review!</div>
             <a id="settingsReviewLink" href="#" target="_blank" data-i18n="FOOTER_REVIEW">★ Rate us</a>
             <span> · </span>
-            <a id="settingsSupportLink" href="#" target="_blank" data-i18n="FOOTER_SUPPORT">☕ Buy me a coffee</a>
+            <a id="settingsSupportLink" href="#" target="_blank" data-i18n="FOOTER_SUPPORT">Support KoalaSync</a>
             <span> · </span>
             <span id="settingsVersion">v0.0.0</span>
         </div>
@@ -641,7 +643,7 @@
                 <div style="font-size: 9px; color: var(--text-muted); opacity: 0.6; margin-bottom: 6px; line-height: 1.3;" data-i18n="FOOTER_SUPPORT_PROMPT">Enjoying KoalaSync? Leave a review!</div>
                 <a id="devReviewLink" href="#" target="_blank" data-i18n="FOOTER_REVIEW">★ Rate us</a>
                 <span> · </span>
-                <a id="devSupportLink" href="#" target="_blank" data-i18n="FOOTER_SUPPORT">☕ Buy me a coffee</a>
+                <a id="devSupportLink" href="#" target="_blank" data-i18n="FOOTER_SUPPORT">Support KoalaSync</a>
                 <span> · </span>
                 <span id="appVersion">v0.0.0</span>
             </div>
diff --git a/scripts/test-locales.cjs b/scripts/test-locales.cjs
index d6df537..fc26876 100644
--- a/scripts/test-locales.cjs
+++ b/scripts/test-locales.cjs
@@ -128,7 +128,8 @@ const chromeLocalesDir = path.join(__dirname, '..', 'extension', '_locales');
 const chromeLocaleMap = {
   'en': 'en', 'de': 'de', 'fr': 'fr', 'es': 'es', 'it': 'it',
   'ja': 'ja', 'ko': 'ko', 'nl': 'nl', 'pl': 'pl',
-  'pt-BR': 'pt_BR', 'pt': 'pt_PT', 'ru': 'ru', 'tr': 'tr'
+  'pt-BR': 'pt_BR', 'pt': 'pt_PT', 'ru': 'ru', 'tr': 'tr',
+  'zh': 'zh_CN', 'uk': 'uk'
 };
 
 // Read SUPPORTED_LANGUAGES from i18n.js
diff --git a/website/app.js b/website/app.js
index cf83788..3a1a83d 100644
--- a/website/app.js
+++ b/website/app.js
@@ -480,11 +480,11 @@ document.addEventListener('DOMContentLoaded', () => {
         const activeLang = safeGetLocalStorage('koala_lang') || (navigator.language.startsWith('de') ? 'de' : 'en');
         const path = window.location.pathname;
         const pathSegments = path.split('/');
-        const isSubdir = pathSegments.some(seg => ['de', 'fr', 'es', 'pt-BR', 'ru', 'it', 'pl', 'tr', 'nl', 'ja', 'ko', 'pt'].includes(seg));
+        const isSubdir = pathSegments.some(seg => ['de', 'fr', 'es', 'it', 'nl', 'pl', 'pt', 'pt-BR', 'tr', 'ru', 'ja', 'ko', 'zh', 'uk'].includes(seg));
 
         // Only need to do this dynamic rewrite if we are NOT already inside a localized subdirectory
         if (!isSubdir) {
-            const homeLinks = document.querySelectorAll('a[href="./"], a[href="de/"], a[href="fr/"], a[href="es/"], a[href="pt-BR/"], a[href="ru/"], a[href="it/"], a[href="pl/"], a[href="tr/"], a[href="nl/"], a[href="ja/"], a[href="ko/"], a[href="pt/"]');
+            const homeLinks = document.querySelectorAll('a[href="./"], a[href="de/"], a[href="fr/"], a[href="es/"], a[href="it/"], a[href="nl/"], a[href="pl/"], a[href="pt/"], a[href="pt-BR/"], a[href="tr/"], a[href="ru/"], a[href="ja/"], a[href="ko/"], a[href="zh/"], a[href="uk/"]');
             homeLinks.forEach(link => {
                 link.href = (activeLang === 'en') ? './' : `${activeLang}/`;
             });
@@ -535,7 +535,7 @@ document.addEventListener('DOMContentLoaded', () => {
         if (isIndex) {
             // Static navigation: Route to correct subdirectory
             const pathSegments = path.split('/');
-            const isSubdir = pathSegments.some(seg => ['de', 'fr', 'es', 'pt-BR', 'ru', 'it', 'pl', 'tr', 'nl', 'ja', 'ko', 'pt'].includes(seg));
+            const isSubdir = pathSegments.some(seg => ['de', 'fr', 'es', 'it', 'nl', 'pl', 'pt', 'pt-BR', 'tr', 'ru', 'ja', 'ko', 'zh', 'uk'].includes(seg));
             
             let targetPath;
             if (newLang === 'en') {
@@ -558,7 +558,7 @@ document.addEventListener('DOMContentLoaded', () => {
         } else {
             // Dynamic page: Toggle classes and update elements dynamically without navigating away
             const html = document.documentElement;
-            html.classList.remove('lang-en', 'lang-de', 'lang-fr', 'lang-es', 'lang-pt-br', 'lang-ru', 'lang-it', 'lang-pl', 'lang-tr', 'lang-nl', 'lang-ja', 'lang-ko', 'lang-pt');
+            html.classList.remove('lang-en', 'lang-de', 'lang-fr', 'lang-es', 'lang-it', 'lang-nl', 'lang-pl', 'lang-pt', 'lang-pt-br', 'lang-tr', 'lang-ru', 'lang-ja', 'lang-ko', 'lang-zh', 'lang-uk');
             
             // Fallback dynamic pages to 'en' if 'de' is not chosen (since fr/es markup is not present)
             const activeDisplayLang = (newLang === 'de') ? 'de' : 'en';
diff --git a/website/build.cjs b/website/build.cjs
index b963d66..f178971 100644
--- a/website/build.cjs
+++ b/website/build.cjs
@@ -162,7 +162,7 @@ async function compile() {
     }
     const templateContent = fs.readFileSync(templatePath, 'utf8');
     const localesDir = path.join(websiteDir, 'locales');
-    const languages = ['en', 'de', 'fr', 'es', 'pt-BR', 'ru', 'it', 'pl', 'tr', 'nl', 'ja', 'ko', 'pt'];
+    const languages = ['en', 'de', 'fr', 'es', 'it', 'nl', 'pl', 'pt', 'pt-BR', 'tr', 'ru', 'ja', 'ko', 'zh', 'uk'];
 
     // Read version for build-time injection (SEO: crawlers see real version)
     const versionJson = JSON.parse(fs.readFileSync(path.join(websiteDir, 'version.json'), 'utf8'));
diff --git a/website/lang-init.js b/website/lang-init.js
index 656caed..7a70672 100644
--- a/website/lang-init.js
+++ b/website/lang-init.js
@@ -31,11 +31,15 @@
         'tr': 'tr',
         'nl': 'nl',
         'ja': 'ja',
-        'ko': 'ko'
+        'ko': 'ko',
+        'zh': 'zh',
+        'uk': 'uk'
     };
 
     var getBrowserLang = function() {
         var fullLang = (navigator.language || '').toLowerCase();
+        if (fullLang.indexOf('zh') === 0) return 'zh';
+        if (fullLang.indexOf('uk') === 0) return 'uk';
         if (fullLang.indexOf('pt-br') === 0) return 'pt-br';
         if (fullLang.indexOf('pt') === 0) return 'pt';
         return fullLang.split('-')[0];
diff --git a/website/locales/de.json b/website/locales/de.json
index 6f5c7a9..5ca7a2a 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Nur unterstützte Seiten",
   "COMP_FEAT_6_NAME": "Lokalisierung / Übersetzung",
   "COMP_FEAT_6_DESC": "Verfügbare Oberflächensprachen und Übersetzungsunterstützung.",
-  "COMP_FEAT_6_KOALA": "13 Sprachen (wachsend)",
+  "COMP_FEAT_6_KOALA": "15 Sprachen (wachsend)",
   "COMP_FEAT_6_TELE": "Nur Englisch",
   "COMP_FEAT_7_NAME": "Audio Compressor / Lautstärke Angleichen",
   "COMP_FEAT_7_DESC": "Integrierte Audionormalisierung für leise Dialoge und laute Effekte",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "de/impressum",
   "FOOTER_PRIVACY_LINK": "de/datenschutz",
   "FOOTER_DISCLAIMER": "KoalaSync ist nicht mit Netflix, Disney+, Amazon, YouTube, Twitch oder anderen Streaming-Plattformen verbunden, wird von diesen nicht unterstützt oder steht in keiner Beziehung zu diesen. Alle Markenrechte liegen bei ihren jeweiligen Inhabern.",
-  "FOOTER_SUPPORT": "Kauf mir einen Kaffee auf Ko-Fi"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/en.json b/website/locales/en.json
index d4a3463..0cf5b22 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Supported sites only",
   "COMP_FEAT_6_NAME": "Localization / Translation",
   "COMP_FEAT_6_DESC": "Available interface languages and translation support.",
-  "COMP_FEAT_6_KOALA": "13 Languages (and growing)",
+  "COMP_FEAT_6_KOALA": "15 Languages (and growing)",
   "COMP_FEAT_6_TELE": "English only",
   "COMP_FEAT_7_NAME": "Audio Compressor / Volume Leveling",
   "COMP_FEAT_7_DESC": "Built-in audio normalization to balance quiet dialogue and loud effects",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync is not affiliated with, endorsed by, or associated with Netflix, Disney+, Amazon, YouTube, Twitch, or any other streaming platform. All trademarks are property of their respective owners.",
-  "FOOTER_SUPPORT": "Buy me a coffee on Ko-Fi"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/es.json b/website/locales/es.json
index 2cd9587..46821eb 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Solo sitios compatibles",
   "COMP_FEAT_6_NAME": "Localización / Traducción",
   "COMP_FEAT_6_DESC": "Idiomas de interfaz disponibles y soporte de traducción.",
-  "COMP_FEAT_6_KOALA": "13 idiomas (y sumando)",
+  "COMP_FEAT_6_KOALA": "15 idiomas (y sumando)",
   "COMP_FEAT_6_TELE": "Solo inglés",
   "COMP_FEAT_7_NAME": "Compresor de Audio / Nivelación de Volumen",
   "COMP_FEAT_7_DESC": "Normalización de audio integrada para equilibrar diálogos bajos y efectos fuertes",
@@ -151,9 +151,9 @@
   "MOCK_08": "Salir de la sala",
   "MOCK_09": "Seleccionar video",
   "MOCK_10": "Control remoto",
-  "MOCK_11": "Reproducir",
-  "MOCK_12": "Pausar",
-  "MOCK_13": "SINCRO",
+  "MOCK_11": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"5 3 19 12 5 21 5 3\"/></svg> Reproducir",
+  "MOCK_12": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><rect x=\"6\" y=\"4\" width=\"4\" height=\"16\"/><rect x=\"14\" y=\"4\" width=\"4\" height=\"16\"/></svg> Pausar",
+  "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SINCRO",
   "MOCK_14": "Ir a la posición de otros",
   "MOCK_15": "Estado de la última actividad",
   "MOCK_16": "Esperando a 1 participante (KoalaPC)...",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync no está afiliado, respaldado ni asociado con Netflix, Disney+, Amazon, YouTube, Twitch ni ninguna otra plataforma de streaming. Todas las marcas comerciales pertenecen a sus respectivos dueños.",
-  "FOOTER_SUPPORT": "Invítame a un café en Ko-Fi"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/fr.json b/website/locales/fr.json
index 3a98bdf..79aa87b 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -50,7 +50,7 @@
   "FEATURE_7_TITLE": "Égalisation du volume / Compresseur audio",
   "FEATURE_7_DESC": "Fini de jouer avec le bouton du volume. Le compresseur audio intégré booste les dialogues discrets et adoucit les explosions. Fonctionne sur Netflix, Prime Video, Disney+, YouTube et toute vidéo HTML5. Entièrement local — aucune donnée audio ne quitte votre ordinateur.",
   "FEATURE_8_TITLE": "Open Source (MIT License)",
-  "FEATURE_8_DESC": "The entire codebase is publicly auditable on GitHub. No black boxes, no proprietary blobs — 100% transparency from the relay server to the browser extension.",
+  "FEATURE_8_DESC": "Tout le code source est publiquement auditable sur GitHub. Pas de boite noire, pas de blob proprietaire - transparence totale du serveur relais a l'extension de navigateur.",
   "COMP_TITLE": "KoalaSync vs Teleparty",
   "COMP_SUBTITLE": "Découvrez pourquoi un outil open-source, sans publicité et respectueux de la vie privée est le meilleur choix pour regarder ensemble.",
   "COMP_COL_FEATURE": "Fonctionnalité",
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Sites pris en charge uniquement",
   "COMP_FEAT_6_NAME": "Localisation / Traduction",
   "COMP_FEAT_6_DESC": "Langues d'interface disponibles et support de traduction.",
-  "COMP_FEAT_6_KOALA": "13 langues (et plus à venir)",
+  "COMP_FEAT_6_KOALA": "15 langues (et plus à venir)",
   "COMP_FEAT_6_TELE": "Anglais uniquement",
   "COMP_FEAT_7_NAME": "Compresseur Audio / Égalisation du Volume",
   "COMP_FEAT_7_DESC": "Normalisation audio intégrée pour équilibrer les dialogues silencieux et les effets sonores",
@@ -151,9 +151,9 @@
   "MOCK_08": "Quitter",
   "MOCK_09": "Choisir la vidéo",
   "MOCK_10": "Télécommande",
-  "MOCK_11": "Lire",
-  "MOCK_12": "Pause",
-  "MOCK_13": "Sauter vers les autres",
+  "MOCK_11": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"5 3 19 12 5 21 5 3\"/></svg> Lire",
+  "MOCK_12": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><rect x=\"6\" y=\"4\" width=\"4\" height=\"16\"/><rect x=\"14\" y=\"4\" width=\"4\" height=\"16\"/></svg> Pause",
+  "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Dernière activité",
   "MOCK_15": "En attente de 1 participant (KoalaPC)...",
   "MOCK_16": "Passer & lire",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync n'est pas affilié à Netflix, Disney+, Amazon, YouTube, Twitch ou toute autre plateforme de streaming. Toutes les marques déposées appartiennent à leurs détenteurs respectifs.",
-  "FOOTER_SUPPORT": "Offre-moi un café sur Ko-Fi"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/it.json b/website/locales/it.json
index 237cfed..3b0d699 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Solo siti selezionati",
   "COMP_FEAT_6_NAME": "Traduzione",
   "COMP_FEAT_6_DESC": "Lingue disponibili per l'interfaccia.",
-  "COMP_FEAT_6_KOALA": "13 Lingue (in crescita)",
+  "COMP_FEAT_6_KOALA": "15 Lingue (in crescita)",
   "COMP_FEAT_6_TELE": "Solo Inglese",
   "COMP_FEAT_7_NAME": "Compressore Audio",
   "COMP_FEAT_7_DESC": "Bilanciamento automatico del suono per voci più chiare.",
@@ -151,9 +151,9 @@
   "MOCK_08": "Esci dalla stanza",
   "MOCK_09": "Scegli Video",
   "MOCK_10": "Telecomando",
-  "MOCK_11": "Play",
-  "MOCK_12": "Pausa",
-  "MOCK_13": "SINCRO",
+  "MOCK_11": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"5 3 19 12 5 21 5 3\"/></svg> Riproduci",
+  "MOCK_12": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><rect x=\"6\" y=\"4\" width=\"4\" height=\"16\"/><rect x=\"14\" y=\"4\" width=\"4\" height=\"16\"/></svg> Pausa",
+  "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Vai dagli altri",
   "MOCK_15": "Ultima attività",
   "MOCK_16": "In attesa di un amico (KoalaPC)...",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync non è affiliato a Netflix, YouTube o altre piattaforme. I marchi appartengono ai rispettivi proprietari.",
-  "FOOTER_SUPPORT": "Offrimi un caffè su Ko-Fi"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/ja.json b/website/locales/ja.json
index b8a98cf..cb949ec 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "サポートされているサイトのみ",
   "COMP_FEAT_6_NAME": "ローカライズ / 翻訳",
   "COMP_FEAT_6_DESC": "利用可能なインターフェース言語と翻訳サポート。",
-  "COMP_FEAT_6_KOALA": "13の言語（今後も追加予定）",
+  "COMP_FEAT_6_KOALA": "15の言語（今後も追加予定）",
   "COMP_FEAT_6_TELE": "英語のみ",
   "COMP_FEAT_7_NAME": "オーディオコンプレッサー / 音量均等化",
   "COMP_FEAT_7_DESC": "静かな会話と大きな効果音のバランスを取る内蔵オーディオノーマライゼーション",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSyncは、Netflix、Disney+、Amazon、YouTube、Twitch、またはその他のストリーミングプラットフォームと提携、承認、または関連付けられているものではありません。すべての商標はそれぞれの所有者に帰属します。",
-  "FOOTER_SUPPORT": "Ko-Fiでコーヒーをおごる"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/ko.json b/website/locales/ko.json
index c7c73c2..c0a9be7 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "지원되는 사이트만 가능",
   "COMP_FEAT_6_NAME": "로컬라이징 / 다국어 지원",
   "COMP_FEAT_6_DESC": "제공되는 인터페이스 언어 및 번역 지원 여부.",
-  "COMP_FEAT_6_KOALA": "13개 언어 지원 (추가 중)",
+  "COMP_FEAT_6_KOALA": "15개 언어 지원 (추가 중)",
   "COMP_FEAT_6_TELE": "영어만 지원",
   "COMP_FEAT_7_NAME": "오디오 압축기 / 볼륨 레벨링",
   "COMP_FEAT_7_DESC": "조용한 대화와 큰 효과음의 균형을 맞추는 내장 오디오 노멀라이제이션",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync는 Netflix, Disney+, Amazon, YouTube, Twitch 또는 기타 스트리밍 플랫폼과 제휴, 보증 또는 연관되어 있지 않습니다. 모든 상표는 해당 소유자의 재산입니다.",
-  "FOOTER_SUPPORT": "Ko-Fi에서 커피 한 잔 사주세요"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/nl.json b/website/locales/nl.json
index 2fd40e9..74c9596 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -50,7 +50,7 @@
   "FEATURE_7_TITLE": "Volume egaliseren / Audiocompressor",
   "FEATURE_7_DESC": "Niet langer aan de volumeknop zitten. De ingebouwde audiocompressor versterkt stille dialogen en dempt harde explosies. Werkt op Netflix, Prime Video, Disney+, YouTube en elke HTML5-video. Volledig lokaal — geen audiogegevens verlaten uw computer.",
   "FEATURE_8_TITLE": "Open Source (MIT License)",
-  "FEATURE_8_DESC": "The entire codebase is publicly auditable on GitHub. No black boxes, no proprietary blobs — 100% transparency from the relay server to the browser extension.",
+  "FEATURE_8_DESC": "De volledige codebase is openbaar controleerbaar op GitHub. Geen zwarte dozen, geen propri?taire blobs - 100% transparantie van de relayserver tot de browserextensie.",
   "COMP_TITLE": "KoalaSync vs. Teleparty",
   "COMP_SUBTITLE": "Ontdek waarom open-source, reclamevrij en privacy-first de superieure manier is om samen te kijken.",
   "COMP_COL_FEATURE": "Functie",
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Alleen ondersteunde sites",
   "COMP_FEAT_6_NAME": "Lokalisatie / Vertaling",
   "COMP_FEAT_6_DESC": "Beschikbare interfacetalen en vertaalondersteuning.",
-  "COMP_FEAT_6_KOALA": "13 talen (en groeiend)",
+  "COMP_FEAT_6_KOALA": "15 talen (en groeiend)",
   "COMP_FEAT_6_TELE": "Alleen Engels",
   "COMP_FEAT_7_NAME": "Audiocompressor / Volume Egaliseren",
   "COMP_FEAT_7_DESC": "Ingebouwde audionormalisatie om stille dialogen en luide effecten in balans te brengen",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync is niet verbonden aan, goedgekeurd door of geassocieerd met Netflix, Disney+, Amazon, YouTube, Twitch of enig ander streamingplatform. Alle handelsmerken zijn eigendom van hun respectieve eigenaren.",
-  "FOOTER_SUPPORT": "Trakteer op een koffie via Ko-Fi"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/pl.json b/website/locales/pl.json
index 38607e6..be17924 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Tylko obsługiwane strony",
   "COMP_FEAT_6_NAME": "Lokalizacja / Tłumaczenie",
   "COMP_FEAT_6_DESC": "Dostępne języki interfejsu i wsparcie tłumaczeń.",
-  "COMP_FEAT_6_KOALA": "13 języków (i rośnie)",
+  "COMP_FEAT_6_KOALA": "15 języków (i rośnie)",
   "COMP_FEAT_6_TELE": "Tylko angielski",
   "COMP_FEAT_7_NAME": "Kompresor Audio / Wyrównywanie Głośności",
   "COMP_FEAT_7_DESC": "Wbudowana normalizacja dźwięku do równoważenia cichych dialogów i głośnych efektów",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync nie jest powiązany, wspierany ani stowarzyszony z Netflix, Disney+, Amazon, YouTube, Twitch ani żadną inną platformą streamingową. Wszystkie znaki towarowe są własnością ich odpowiednich właścicieli.",
-  "FOOTER_SUPPORT": "Postaw kawę na Ko-Fi"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index 1a7011d..adf1d4e 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Apenas sites selecionados",
   "COMP_FEAT_6_NAME": "Traduzido",
   "COMP_FEAT_6_DESC": "Idiomas suportados.",
-  "COMP_FEAT_6_KOALA": "13 Idiomas",
+  "COMP_FEAT_6_KOALA": "15 Idiomas",
   "COMP_FEAT_6_TELE": "Apenas Inglês",
   "COMP_FEAT_7_NAME": "Compressor de Áudio",
   "COMP_FEAT_7_DESC": "Melhora a clareza das vozes nos vídeos.",
@@ -151,9 +151,9 @@
   "MOCK_08": "Sair da Sala",
   "MOCK_09": "Selecionar Vídeo",
   "MOCK_10": "Controle Remoto",
-  "MOCK_11": "Play",
-  "MOCK_12": "Pausa",
-  "MOCK_13": "SINCRO",
+  "MOCK_11": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"5 3 19 12 5 21 5 3\"/></svg> Play",
+  "MOCK_12": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><rect x=\"6\" y=\"4\" width=\"4\" height=\"16\"/><rect x=\"14\" y=\"4\" width=\"4\" height=\"16\"/></svg> Pausa",
+  "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SINCRO",
   "MOCK_14": "Ir para a posição dos outros",
   "MOCK_15": "Última Atividade",
   "MOCK_16": "Aguardando 1 amigo (KoalaPC)...",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync não é afiliado à Netflix, Disney+, YouTube, Twitch, etc. Todas as marcas registradas são de propriedade de seus respectivos donos.",
-  "FOOTER_SUPPORT": "Me pague um café"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/pt.json b/website/locales/pt.json
index e6b79f1..8390172 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Apenas sites selecionados",
   "COMP_FEAT_6_NAME": "Traduzido",
   "COMP_FEAT_6_DESC": "Idiomas suportados.",
-  "COMP_FEAT_6_KOALA": "13 Idiomas",
+  "COMP_FEAT_6_KOALA": "15 Idiomas",
   "COMP_FEAT_6_TELE": "Apenas Inglês",
   "COMP_FEAT_7_NAME": "Compressor de Áudio",
   "COMP_FEAT_7_DESC": "Melhora a clareza das vozes nos vídeos.",
@@ -151,9 +151,9 @@
   "MOCK_08": "Sair da Sala",
   "MOCK_09": "Selecionar Vídeo",
   "MOCK_10": "Controlo Remoto",
-  "MOCK_11": "Play",
-  "MOCK_12": "Pausa",
-  "MOCK_13": "SINCRO",
+  "MOCK_11": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"5 3 19 12 5 21 5 3\"/></svg> Play",
+  "MOCK_12": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><rect x=\"6\" y=\"4\" width=\"4\" height=\"16\"/><rect x=\"14\" y=\"4\" width=\"4\" height=\"16\"/></svg> Pausa",
+  "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SINCRO",
   "MOCK_14": "Ir para a posição dos outros",
   "MOCK_15": "Última Atividade",
   "MOCK_16": "À espera de 1 amigo (KoalaPC)...",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync não é afiliado à Netflix, Disney+, YouTube, Twitch, etc. Todas as marcas são propriedade dos seus titulares.",
-  "FOOTER_SUPPORT": "Oferece-me um café"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/ru.json b/website/locales/ru.json
index 16dc3a4..5dd6a93 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Только поддерживаемые сайты",
   "COMP_FEAT_6_NAME": "Локализация / Перевод",
   "COMP_FEAT_6_DESC": "Доступные языки интерфейса и поддержка перевода.",
-  "COMP_FEAT_6_KOALA": "13 языков (и расширяется)",
+  "COMP_FEAT_6_KOALA": "15 языков (и расширяется)",
   "COMP_FEAT_6_TELE": "Только английский",
   "COMP_FEAT_7_NAME": "Аудиокомпрессор / Выравнивание Громкости",
   "COMP_FEAT_7_DESC": "Встроенная нормализация звука для баланса тихих диалогов и громких эффектов",
@@ -151,9 +151,9 @@
   "MOCK_08": "Покинуть комнату",
   "MOCK_09": "Выбрать видео",
   "MOCK_10": "Пульт управления",
-  "MOCK_11": "Воспроизвести",
-  "MOCK_12": "Пауза",
-  "MOCK_13": "Перейти к другим",
+  "MOCK_11": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"5 3 19 12 5 21 5 3\"/></svg> Воспроизвести",
+  "MOCK_12": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><rect x=\"6\" y=\"4\" width=\"4\" height=\"16\"/><rect x=\"14\" y=\"4\" width=\"4\" height=\"16\"/></svg> Пауза",
+  "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Последняя активность",
   "MOCK_15": "Ожидание 1 участника (KoalaPC)...",
   "MOCK_16": "Пропустить и играть",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync не связан, не спонсируется и не аффилирован с Netflix, Disney+, Amazon, YouTube, Twitch или любой другой стриминговой платформой. Все товарные знаки являются собственностью их соответствующих владельцев.",
-  "FOOTER_SUPPORT": "Угости кофе на Ko-Fi"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/tr.json b/website/locales/tr.json
index b5c75c7..742f095 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -76,7 +76,7 @@
   "COMP_FEAT_5_TELE": "Sadece desteklenen siteler",
   "COMP_FEAT_6_NAME": "Yerelleştirme / Çeviri",
   "COMP_FEAT_6_DESC": "Mevcut arayüz dilleri ve çeviri desteği.",
-  "COMP_FEAT_6_KOALA": "13 Dil (ve artıyor)",
+  "COMP_FEAT_6_KOALA": "15 Dil (ve artıyor)",
   "COMP_FEAT_6_TELE": "Sadece İngilizce",
   "COMP_FEAT_7_NAME": "Ses Kompresörü / Ses Seviyesi Dengeleme",
   "COMP_FEAT_7_DESC": "Sessiz diyaloglar ve yüksek efektler arasında denge sağlayan yerleşik ses normalizasyonu",
@@ -176,5 +176,5 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync; Netflix, Disney+, Amazon, YouTube, Twitch veya başka herhangi bir yayın platformuna bağlı değildir, bunlar tarafından desteklenmemektedir ve bunlarla ilişkili değildir. Tüm ticari markalar ilgili sahiplerinin mülkiyetindedir.",
-  "FOOTER_SUPPORT": "Ko-Fi'de bana kahve ısmarla"
+  "FOOTER_SUPPORT": "Support KoalaSync"
 }
diff --git a/website/locales/uk.json b/website/locales/uk.json
new file mode 100644
index 0000000..4fae431
--- /dev/null
+++ b/website/locales/uk.json
@@ -0,0 +1,180 @@
+{
+  "LANG_CODE": "uk",
+  "HTML_CLASS": "lang-uk",
+  "CANONICAL_PATH": "uk/",
+  "LANG_TOGGLE_URL": "../",
+  "LANG_TOGGLE_TEXT": "EN",
+  "OG_LOCALE": "uk_UA",
+  "META_TITLE": "KoalaSync | Синхронізуйте Netflix, YouTube і будь-яке відео з друзями",
+  "META_DESCRIPTION": "Дивіться Netflix, YouTube, Twitch і будь-яке HTML5 відео в ідеальній синхронізації з друзями. Безкоштовне розширення для браузера з відкритим кодом для Chrome і Firefox. Реєстрація не потрібна.",
+  "SCHEMA_APP_DESC": "Дивіться Netflix, YouTube, Twitch і будь-яке HTML5 відео в ідеальній синхронізації з друзями. Безкоштовне розширення для браузера з відкритим кодом для Chrome і Firefox. Реєстрація не потрібна.",
+  "OG_TITLE": "KoalaSync | Синхронізація Netflix, Emby, Jellyfin і майже будь-якого відео з друзями",
+  "OG_DESCRIPTION": "Дивіться Netflix, Emby, Jellyfin, YouTube, Twitch і майже будь-яке відео HTML5 в ідеальній синхронізації. Розширення веб-переглядача з відкритим вихідним кодом для Chrome і Firefox, перш за все конфіденційність.",
+  "TWITTER_TITLE": "KoalaSync | Синхронізація Netflix, Emby, Jellyfin і майже будь-якого відео з друзями – розширення браузера",
+  "TWITTER_DESCRIPTION": "Дивіться Netflix, Emby, Jellyfin, YouTube, Twitch і майже будь-яке відео HTML5 в ідеальній синхронізації з друзями. Розширення веб-переглядача з відкритим вихідним кодом для Chrome і Firefox, перш за все конфіденційність.",
+  "NAV_FEATURES": "особливості",
+  "NAV_HOW_IT_WORKS": "Як це працює",
+  "HERO_TITLE": "Дивіться разом.<span class='hero-line2'>Ідеальна синхронізація.</span>",
+  "HERO_SUBTITLE": "Ваш віддалений кіновечір без лагів. Ні реєстрації, ні збору даних. Просто поділіться посиланням і дивіться разом.",
+  "HERO_MASCOT_ALT": "Мила коала стоїть і дивиться вниз на кнопки завантаження",
+  "ADD_TO_CHROME": "Додати до Chrome",
+  "ADD_TO_FIREFOX": "Додати до Firefox",
+  "COMPAT_HEADING": "Працює на ваших улюблених платформах",
+  "COMPAT_MORE": "і багато іншого",
+  "COMPAT_TOOLTIP": "Працює майже на будь-якому сайті з елементом відео",
+  "USE_CASES_TITLE": "Ідеально підходить для будь-якого випадку",
+  "USE_CASES_SUBTITLE": "Незалежно від того, поблизу чи далеко, KoalaSync об’єднує людей навколо їхніх улюблених відео.",
+  "USE_CASE_1_ALT": "Дві милі коали сидять разом і діляться відерцем попкорну",
+  "USE_CASE_1_TITLE": "Вечір кіно з друзями",
+  "USE_CASE_1_DESC": "Синхронізуйте свої фільми в режимі реального часу та спілкуйтеся через Discord, Zoom або улюблену програму для голосових викликів. Таке відчуття, ніби сидиш в одній кімнаті.",
+  "USE_CASE_2_ALT": "Професор-коала презентує на екрані двом віддаленим студентам-коалам",
+  "USE_CASE_2_TITLE": "Дистанційне навчання",
+  "USE_CASE_2_DESC": "Аналізуйте онлайн-уроки, лекції чи навчальні потоки для розробників разом з однокласниками чи колегами. Зробіть паузу та обговоріть складні кроки в ідеальній гармонії.",
+  "USE_CASE_3_ALT": "Мила пара коал дивиться разом віддалено; один сидить за комп’ютером, а інший у ліжку з ноутбуком, а між ними літають серця",
+  "USE_CASE_3_TITLE": "Відносини на відстані",
+  "USE_CASE_3_DESC": "Подолайте відстань і насолоджуйтесь побаченнями. Переживайте кожен поворот сюжету, смійтеся над тими самими жартами та діліться емоційними моментами в ту саму мілісекунду.",
+  "WHY_TITLE": "Чому KoalaSync?",
+  "WHY_SUBTITLE": "Створено для надійної синхронізації, конфіденційності та простого налаштування.",
+  "FEATURE_1_TITLE": "Повний контроль/миттєва синхронізація",
+  "FEATURE_1_DESC": "Один робить паузу, всі зупиняються. Один шукає, всі йдуть. Наш двофазний протокол синхронізації координує відтворення в режимі реального часу для всіх учасників.",
+  "FEATURE_2_TITLE": "Нескінченне споглядання",
+  "FEATURE_2_DESC": "Автоматичне відтворення синхронізовано. KoalaSync автоматично визначає переходи епізодів і утримує відтворення, доки всі однорангові пристрої успішно не завантажать наступне відео.",
+  "FEATURE_3_TITLE": "Нуль облікових записів / чиста конфіденційність",
+  "FEATURE_3_DESC": "Ні реєстрації, ні відстеження, ні слідів постійності. Сервер повністю працює в ефемерному RAM і очищає вашу кімнату, коли ви залишаєте її.",
+  "FEATURE_4_TITLE": "Універсальна підтримка HTML5",
+  "FEATURE_4_DESC": "Працює на YouTube, Twitch, Netflix, Jellyfin, Emby і майже будь-якій стандартній веб-сторінці, що містить відеоелемент HTML5. Також сумісний із користувальницькими налаштуваннями, розміщеними на власному хості. На наші сервери ніколи не надсилаються відеодані — лише метадані синхронізації.",
+  "FEATURE_5_TITLE": "Саморозміщення та готовність до Docker",
+  "FEATURE_5_DESC": "Наші офіційні сервери безкоштовні та швидкі, але ви можете отримати повне право власності, якщо хочете. Запустіть власний приватний сервер ретрансляції за лічені секунди через Docker.",
+  "FEATURE_6_TITLE": "Миттєві запрошення / Приєднання в 1 клік",
+  "FEATURE_6_DESC": "Немає IP-адрес або паролів для обміну. Поділіться створеним посиланням із запрошенням із друзями, щоб вони могли автоматично приєднатися до вашої кімнати одним клацанням миші.",
+  "FEATURE_7_TITLE": "Вирівнювання гучності / Аудіокомпресор",
+  "FEATURE_7_DESC": "Більше не потрібно натискати на ручку гучності. Вбудований аудіокомпресор посилює тихий діалог і приборкує гучні вибухи. Працює на Netflix, Prime Video, Disney+, YouTube і будь-якому відео HTML5. Повністю локально — аудіодані не залишають ваш комп’ютер.",
+  "FEATURE_8_TITLE": "Відкритий код (ліцензія MIT)",
+  "FEATURE_8_DESC": "Вся кодова база доступна для публічного аудиту на GitHub. Жодних чорних скриньок, жодних власних блобів — 100% прозорість від сервера ретрансляції до розширення браузера.",
+  "COMP_TITLE": "KoalaSync проти Teleparty",
+  "COMP_SUBTITLE": "Дізнайтеся, чому відкритий вихідний код, без реклами та конфіденційність – це найкращий спосіб дивитися разом.",
+  "COMP_COL_FEATURE": "Особливість",
+  "COMP_FEAT_1_NAME": "Вартість / Paywalls",
+  "COMP_FEAT_1_DESC": "Преміум-підписки, приховані комісії або заблоковані функції.",
+  "COMP_FEAT_1_KOALA": "100% безкоштовно",
+  "COMP_FEAT_1_TELE": "Платні рівні / преміум-блокування",
+  "COMP_FEAT_2_NAME": "Ліцензія/Код підлягає аудиту",
+  "COMP_FEAT_2_DESC": "Чи є вихідний код відкритим і доступним для вільного аудиту.",
+  "COMP_FEAT_2_KOALA": "Відкритий код (MIT)",
+  "COMP_FEAT_2_TELE": "Власний",
+  "COMP_FEAT_3_NAME": "Самостійне розміщення",
+  "COMP_FEAT_3_DESC": "Можливість розгорнути власний приватний сервер ретрансляції.",
+  "COMP_FEAT_3_KOALA": "Так (готовий до Docker)",
+  "COMP_FEAT_3_TELE": "немає",
+  "COMP_FEAT_4_NAME": "Конфіденційність і відстеження",
+  "COMP_FEAT_4_DESC": "Вимоги до реєстрації, відстеження файлів cookie та аналітика.",
+  "COMP_FEAT_4_KOALA": "Нульова стійкість (лише для RAM)",
+  "COMP_FEAT_4_TELE": "Google Analytics і файли cookie",
+  "COMP_FEAT_5_NAME": "Сумісність сайту",
+  "COMP_FEAT_5_DESC": "Підтримувані веб-сайти та сумісність із плеєрами.",
+  "COMP_FEAT_5_KOALA": "Майже будь-яке відео HTML5",
+  "COMP_FEAT_5_TELE": "Лише підтримувані сайти",
+  "COMP_FEAT_6_NAME": "Локалізація / Переклад",
+  "COMP_FEAT_6_DESC": "Доступні мови інтерфейсу та підтримка перекладу.",
+  "COMP_FEAT_6_KOALA": "15 мов (і зростає)",
+  "COMP_FEAT_6_TELE": "лише англійською мовою",
+  "COMP_FEAT_7_NAME": "Аудіокомпресор / Вирівнювання гучності",
+  "COMP_FEAT_7_DESC": "Вбудована нормалізація аудіо для балансування тихих діалогів і гучних ефектів",
+  "COMP_FEAT_7_KOALA": "Так (4 попередні налаштування, сухий/мокрий контроль)",
+  "COMP_FEAT_7_TELE": "немає",
+  "COMP_FOOTNOTE_1": "Стан для порівняння: травень 2026 року.",
+  "COMP_FOOTNOTE_2": "Офіційні ціни на Teleparty Premium і відомості про підтримувані мережі:",
+  "COMP_FOOTNOTE_3": "Політика конфіденційності Teleparty і збір даних відстеження:",
+  "COMP_FOOTNOTE_4": "Працює на веб-сайтах, які дозволяють ін’єкції сценаріїв у стандартні відеотеги HTML5. Веб-сайти з дуже суворими політиками безпеки вмісту (CSP), захистом від копіювання DRM або сильно затуманеними оболонками програвачів (як-от складні тіньові DOM) можуть обмежувати автоматизований контроль або впровадження.",
+  "STEPS_TITLE": "Початок роботи",
+  "STEP_1_TITLE": "Встановити розширення",
+  "STEP_1_DESC": "Додайте KoalaSync до свого браузера з веб-магазину Chrome, доповнень Firefox або завантажте найновіший розробник ZIP із GitHub.",
+  "STEP_1_ILLUS_DESC": "Синхронізатор відео насамперед із конфіденційністю",
+  "STEP_1_ILLUS_DL_CHROME": "Завантажити для Chrome",
+  "STEP_1_ILLUS_DL_FIREFOX": "Завантажити для Firefox",
+  "STEP_1_ILLUS_ACTIVE": "Розширення активне",
+  "STEP_1_ILLUS_READY": "Готові дивитися разом!",
+  "STEP_2_TITLE": "Створіть кімнату",
+  "STEP_2_DESC": "Відкрийте спливаюче вікно розширення та натисніть «+ Створити нову кімнату». KoalaSync автоматично генерує безпечний Room ID і пароль, приєднується до нього та копіює посилання для запрошення в буфер обміну.",
+  "STEP_2_ILLUS_ROOM": "Кімната",
+  "STEP_2_ILLUS_SYNC": "Синхронізувати",
+  "STEP_2_ILLUS_SETTINGS": "Налаштування",
+  "STEP_2_ILLUS_CREATE": "+ Створити нову кімнату",
+  "STEP_2_ILLUS_MANUAL": "Ручне підключення / Додатково",
+  "STEP_2_ILLUS_COPIED": "Посилання на запрошення скопійовано!",
+  "STEP_3_TITLE": "Поділитися та синхронізувати",
+  "STEP_3_DESC": "Надішліть запрошення своїм друзям. Коли вони приєднаються, виберіть вкладку відео та насолоджуйтеся синхронізованим відтворенням.",
+  "STEP_3_ILLUS_IN_SYNC": "СИНХРОНІЗОВАНО",
+  "SELF_TITLE": "Для самостійних господарів",
+  "SELF_SUBTITLE": "Не довіряєте нашому серверу? Підтримуйте повний суверенітет даних. Розгорніть власний приватний сервер ретрансляції за лічені хвилини.",
+  "SELF_MASCOT_ALT": "Мила коала сидить за ноутбуком і розгортає контейнер Docker для самостійного розміщення",
+  "SELF_COPY_CODE": "Копіювати код",
+  "SELF_GITHUB_PACKAGES": "Переглянути всі теги зображень на пакетах GitHub",
+  "BOTTOM_TITLE": "Не переконали? Подивіться самі.",
+  "BOTTOM_SUBTITLE": "KoalaSync є на 100% відкритим кодом, без реклами та відстеження. Перевірте нашу кодову базу на GitHub або безпосередньо встановіть розширення для браузера.",
+  "BOTTOM_MASCOT_ALT": "Мила коала тримає сторінку репозиторію GitHub поруч із талісманом GitHub Octocat",
+  "FAQ_TITLE": "Часті запитання",
+  "FAQ_SUBTITLE": "Все, що вам потрібно знати про спільний перегляд відео в ідеальній синхронізації.",
+  "FAQ_Q1": "Чи можу я дивитися Netflix, Emby або Jellyfin разом із друзями?",
+  "FAQ_A1": "так! KoalaSync працює на Netflix, YouTube, Twitch і будь-якому веб-сайті з відеопрогравачем HTML5, включаючи Emby, Jellyfin і медіасервери, розміщені на власному хості. Установіть розширення, створіть кімнату, поділіться посиланням для запрошення, і всі дивитимуться в повній синхронізації.",
+  "FAQ_Q2": "Чи є KoalaSync безкоштовною альтернативою Teleparty?",
+  "FAQ_A2": "100% безкоштовне та з відкритим кодом за ліцензією MIT. Без преміум-рівнів, без заблокованих функцій, без реклами — все включено. На відміну від Teleparty, ретрансляційний сервер KoalaSync призначений лише для RAM і не вимагає збору даних або облікових записів користувачів.",
+  "FAQ_Q3": "Чи працює KoalaSync із Emby, Jellyfin і власними медіа-серверами?",
+  "FAQ_A3": "так KoalaSync виявляє будь-який стандартний відеоелемент HTML5, що означає, що він ідеально працює з Emby, Jellyfin, Plex та будь-якими спеціальними налаштуваннями потокового передавання. Ви також можете самостійно розмістити сервер ретрансляції KoalaSync через Docker для повного суверенітету даних.",
+  "FAQ_Q4": "Які браузери та платформи підтримують KoalaSync?",
+  "FAQ_A4": "Google Chrome, Mozilla Firefox, Microsoft Edge, Opera, Brave та всі браузери на основі Chromium. Встановіть його безпосередньо з веб-магазину Chrome або додатків Firefox — ручне налаштування не потрібне.",
+  "FAQ_Q5": "Чи всім моїм друзям потрібно встановити розширення?",
+  "FAQ_A5": "Так, кожному учаснику потрібно встановити KoalaSync — але немає реєстрації чи створення облікового запису. Просто клацніть посилання запрошення, установіть розширення, якщо ви ще цього не зробили, і ви автоматично приєднаєтесь до кімнати за лічені секунди.",
+  "FAQ_Q6": "Чи мої дані в безпеці? Що робити, якщо я не довіряю офіційному серверу?",
+  "FAQ_A6": "Повністю безпечний. Сервер ретрансляції KoalaSync призначений лише для RAM — усі дані сеансу назавжди видаляються, коли ви залишаєте кімнату. Ні бази даних, ні реєстрації, ні аналітики, ні облікових записів. А якщо ви віддаєте перевагу повному контролю: ви можете самостійно розмістити свій приватний сервер ретрансляції через Docker за лічені хвилини. Уся кодова база є відкритим кодом і доступна д��я перевірки на GitHub.",
+  "FAQ_Q7": "Чи можу я виправити тихий діалог і гучні вибухи під час перегляду відео в браузері?",
+  "FAQ_A7": "Так. KoalaSync 2.2.0 містить вбудований аудіокомпресор, який зменшує різницю між тихими та гучними частинами відео. Він працює локально через Web Audio API - аудіодані ніколи не залишають ваш комп'ютер. Відкрийте спливне вікно, створіть кімнату, перейдіть до «Налаштування» → «Обробка аудіо», увімкніть компресор і виберіть пресет. Працює з Netflix, Prime Video, Disney+, YouTube і будь-яким HTML5-відеосайтом.",
+  "HOWTO_TITLE": "Як синхронізувати відео з друзями за допомогою KoalaSync",
+  "HOWTO_DESC": "Дивіться будь-яке відео в ідеальній синхронізації з друзями на YouTube, Netflix, Twitch тощо. Без реєстрації, без відстеження.",
+  "HOWTO_STEP_1_NAME": "Встановіть розширення для браузера",
+  "HOWTO_STEP_1_TEXT": "Додайте KoalaSync до свого браузера з Chrome Web Store або Firefox Add-ons. Він працює на будь-якому веб-сайті з елементом відео.",
+  "HOWTO_STEP_2_NAME": "Створіть кімнату",
+  "HOWTO_STEP_2_TEXT": "Відкрийте спливаюче вікно розширення та натисніть «Створити нову кімнату». Посилання для запрошення автоматично копіюється в буфер обміну.",
+  "HOWTO_STEP_3_NAME": "Поділіться та синхронізуйте",
+  "HOWTO_STEP_3_TEXT": "Надішліть запрошення своїм друзям. Виберіть вкладку відео та насолоджуйтеся синхронізованим відтворенням у реальному часі.",
+  "FOOTER_MIT": "Відкритий код за ліцензією MIT.",
+  "FOOTER_RAM": "На наших серверах дані не зберігаються. Чисте реле на основі RAM.",
+  "FOOTER_LEGAL": "Юридична інформація",
+  "FOOTER_PRIVACY": "Політика конфіденційності",
+  "MOCK_01": "Активна кімната",
+  "MOCK_02": "Офіційний сервер",
+  "MOCK_03": "Посилання на запрошення",
+  "MOCK_04": "Однолітки в кімнаті",
+  "MOCK_05": "ВИ",
+  "MOCK_06": "Граючи",
+  "MOCK_07": "Одноліток",
+  "MOCK_08": "Вийти з кімнати",
+  "MOCK_09": "Виберіть Відео",
+  "MOCK_10": "Пульт дистанційного керування",
+  "MOCK_11": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"5 3 19 12 5 21 5 3\"/></svg> Грати",
+  "MOCK_12": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><rect x=\"6\" y=\"4\" width=\"4\" height=\"16\"/><rect x=\"14\" y=\"4\" width=\"4\" height=\"16\"/></svg> Пауза",
+  "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> СИНХ",
+  "MOCK_14": "Перейти до інших",
+  "MOCK_15": "Статус останньої дії",
+  "MOCK_16": "Очікування 1 партнера (KoalaPC)...",
+  "MOCK_17": "Все одно пропустіть і грайте",
+  "MOCK_18": "Ваше ім'я користувача",
+  "MOCK_19": "Приховати безладні вкладки",
+  "MOCK_20": "Автоматична синхронізація наступного епізоду",
+  "MOCK_21": "Автоматичне копіювання посилання для запрошення",
+  "MOCK_22": "Сповіщення браузера",
+  "MOCK_23": "Усунення несправностей",
+  "MOCK_24": "Регенерувати Peer ID",
+  "MOCK_25": "Використовуйте це, якщо ви бачите помилку \"Дублікати ідентифікатора\".",
+  "MOCK_26": "Статус підключення",
+  "MOCK_27": "Підключено",
+  "MOCK_28": "Копіювати журнали",
+  "MOCK_29": "Інформація про налагодження відео",
+  "MOCK_30": "Повна історія дій",
+  "MOCK_31": "Журнали (останні 50)",
+  "MOCK_32": "ЯСНО",
+  "FOOTER_LEGAL_LINK": "imprint",
+  "FOOTER_PRIVACY_LINK": "privacy",
+  "FOOTER_DISCLAIMER": "KoalaSync не пов’язаний із Netflix, Disney+, Amazon, YouTube, Twitch або будь-якою іншою потоковою платформою, не схвалений і не пов’язаний з ними. Усі торгові марки є власністю відповідних власників.",
+  "FOOTER_SUPPORT": "Support KoalaSync"
+}
diff --git a/website/locales/zh.json b/website/locales/zh.json
new file mode 100644
index 0000000..02ed7b3
--- /dev/null
+++ b/website/locales/zh.json
@@ -0,0 +1,180 @@
+{
+  "LANG_CODE": "zh",
+  "HTML_CLASS": "lang-zh",
+  "CANONICAL_PATH": "zh/",
+  "LANG_TOGGLE_URL": "../",
+  "LANG_TOGGLE_TEXT": "EN",
+  "OG_LOCALE": "zh_CN",
+  "META_TITLE": "KoalaSync | 与朋友同步 Netflix、YouTube 和任何视频",
+  "META_DESCRIPTION": "与朋友完美同步观看 Netflix、YouTube、Twitch 和任何 HTML5 视频。适用于 Chrome 和 Firefox 的免费开源浏览器扩展。无需注册。",
+  "SCHEMA_APP_DESC": "与朋友完美同步观看 Netflix、YouTube、Twitch 和任何 HTML5 视频。适用于 Chrome 和 Firefox 的免费开源浏览器扩展。无需注册。",
+  "OG_TITLE": "KoalaSync |与朋友同步 Netflix、Emby、Jellyfin 和几乎任何视频",
+  "OG_DESCRIPTION": "完美同步观看 Netflix、Emby、Jellyfin、YouTube、Twitch 和几乎任何 HTML5 视频。适用于 Chrome 和 Firefox 的隐私第一开源浏览器扩展。",
+  "TWITTER_TITLE": "KoalaSync |与朋友同步 Netflix、Emby、Jellyfin 和几乎所有视频 – 浏览器扩展",
+  "TWITTER_DESCRIPTION": "与朋友完美同步观看 Netflix、Emby、Jellyfin、YouTube、Twitch 和几乎任何 HTML5 视频。适用于 Chrome 和 Firefox 的隐私第一开源浏览器扩展。",
+  "NAV_FEATURES": "特征",
+  "NAV_HOW_IT_WORKS": "它是如何运作的",
+  "HERO_TITLE": "一起观看.<span class='hero-line2'> 完美同步.</span>",
+  "HERO_SUBTITLE": "您的远程电影之夜没有延迟。无需注册，无需收集数据。只需分享链接即可一起观看。",
+  "HERO_MASCOT_ALT": "一只可爱的考拉站着，低头看着下载按钮",
+  "ADD_TO_CHROME": "添加到Chrome",
+  "ADD_TO_FIREFOX": "添加到Firefox",
+  "COMPAT_HEADING": "适用于您最喜欢的平台",
+  "COMPAT_MORE": "还有更多",
+  "COMPAT_TOOLTIP": "适用于几乎所有具有视频元素的网站",
+  "USE_CASES_TITLE": "适合任何场合",
+  "USE_CASES_SUBTITLE": "无论远近，KoalaSync 将人们聚集在他们最喜欢的视频周围。",
+  "USE_CASE_1_ALT": "两只可爱的考拉坐在一起分享一桶爆米花",
+  "USE_CASE_1_TITLE": "与朋友的电影之夜",
+  "USE_CASE_1_DESC": "实时同步您的电影并通过 Discord、Zoom 或您最喜欢的语音通话应用程序进行交谈。感觉就像坐在同一个房间里一样。",
+  "USE_CASE_2_ALT": "一位考拉教授在屏幕上向两只远程学生考拉进行演示",
+  "USE_CASE_2_TITLE": "远程学习",
+  "USE_CASE_2_DESC": "与同学或同事一起分析在线教程、讲座或开发人员培训流。暂停并完美和谐地讨论复杂的步骤。",
+  "USE_CASE_3_ALT": "一对可爱的考拉情侣一起远程观看；一个坐在电脑前，另一个拿着笔记本电脑躺在床上，两人的心在飞舞",
+  "USE_CASE_3_TITLE": "远距离关系",
+  "USE_CASE_3_DESC": "拉近距离，享受约会之夜。体验每一个情节转折，嘲笑同样的笑话，并在同一毫秒内分享情感时刻。",
+  "WHY_TITLE": "为什么是KoalaSync？",
+  "WHY_SUBTITLE": "专为可靠的同步、隐私优先的设计和轻松的设置而打造。",
+  "FEATURE_1_TITLE": "完全控制/即时同步",
+  "FEATURE_1_DESC": "一个人停顿，所有人都停顿。一追寻，众人追随。我们的两阶段同步协议协调所有参与者的实时播放。",
+  "FEATURE_2_TITLE": "无尽的狂欢",
+  "FEATURE_2_DESC": "自动同步播放。 KoalaSync 自动检测剧集转换并保持播放，直到所有对等方都成功加载下一个视频。",
+  "FEATURE_3_TITLE": "零账户/纯粹隐私",
+  "FEATURE_3_DESC": "没有注册，没有跟踪，没有持久性足迹。服务器完全在临时 RAM 中运行，并在您离开时清理您的房间。",
+  "FEATURE_4_TITLE": "通用 HTML5 支持",
+  "FEATURE_4_DESC": "适用于 YouTube、Twitch、Netflix、Jellyfin、Emby 以及几乎任何包含 HTML5 视频元素的标准网页。还与自定义自托管设置兼容。不会将任何视频数据发送到我们的服务器，仅发送同步元数据。",
+  "FEATURE_5_TITLE": "自托管和 Docker 就绪",
+  "FEATURE_5_DESC": "我们的官方服务器是免费且快速的，但如果您愿意，您可以完全拥有所有权。通过 Docker 在几秒钟内启动您自己的私有中继服务器。",
+  "FEATURE_6_TITLE": "即时邀请/一键加入",
+  "FEATURE_6_DESC": "无需交换 IP 地址或密码。与您的朋友分享生成的邀请链接，让他们只需单击一下即可自动加入您的房间。",
+  "FEATURE_7_TITLE": "音量调节/音频压缩器",
+  "FEATURE_7_DESC": "不再需要调节音量旋钮。内置音频压缩器可增强安静的对话并抑制大声的爆炸声。适用于 Netflix、Prime Video、Disney+、YouTube 和任何 HTML5 视频。完全本地化——音频数据不会离开您的计算机。",
+  "FEATURE_8_TITLE": "开源（MIT 许可证）",
+  "FEATURE_8_DESC": "整个代码库可在 GitHub 上公开审核。没有黑匣子，没有专有 blob——从中继服务器到浏览器扩展 100% 透明。",
+  "COMP_TITLE": "KoalaSync 与 Teleparty",
+  "COMP_SUBTITLE": "了解为什么开源、无广告和隐私优先是一起观看的最佳方式。",
+  "COMP_COL_FEATURE": "特征",
+  "COMP_FEAT_1_NAME": "成本/付费专区",
+  "COMP_FEAT_1_DESC": "高级订阅、隐藏费用或锁定功能。",
+  "COMP_FEAT_1_KOALA": "100% 免费",
+  "COMP_FEAT_1_TELE": "付费等级/高级锁",
+  "COMP_FEAT_2_NAME": "许可证/代码可审核",
+  "COMP_FEAT_2_DESC": "源代码是否开放并可自由审核。",
+  "COMP_FEAT_2_KOALA": "开源（MIT）",
+  "COMP_FEAT_2_TELE": "所有权",
+  "COMP_FEAT_3_NAME": "自托管",
+  "COMP_FEAT_3_DESC": "能够部署您自己的私有中继服务器。",
+  "COMP_FEAT_3_KOALA": "是（Docker-就绪）",
+  "COMP_FEAT_3_TELE": "不",
+  "COMP_FEAT_4_NAME": "隐私和追踪",
+  "COMP_FEAT_4_DESC": "注册要求、跟踪 cookie 和分析。",
+  "COMP_FEAT_4_KOALA": "零持久性（仅限 RAM）",
+  "COMP_FEAT_4_TELE": "谷歌分析和 Cookie",
+  "COMP_FEAT_5_NAME": "站点兼容性",
+  "COMP_FEAT_5_DESC": "支持的网站和播放器兼容性。",
+  "COMP_FEAT_5_KOALA": "几乎任何 HTML5 视频",
+  "COMP_FEAT_5_TELE": "仅支持的网站",
+  "COMP_FEAT_6_NAME": "本地化/翻译",
+  "COMP_FEAT_6_DESC": "可用的界面语言和翻译支持。",
+  "COMP_FEAT_6_KOALA": "15 种语言（并且还在不断增加）",
+  "COMP_FEAT_6_TELE": "仅英语",
+  "COMP_FEAT_7_NAME": "音频压缩器/音量调节",
+  "COMP_FEAT_7_DESC": "内置音频标准化，以平衡安静的对话和响亮的效果",
+  "COMP_FEAT_7_KOALA": "有（4 个预设，干/湿控制）",
+  "COMP_FEAT_7_TELE": "不",
+  "COMP_FOOTNOTE_1": "比较状态：2026 年 5 月。",
+  "COMP_FOOTNOTE_2": "官方 Teleparty Premium 定价和支持的网络详细信息：",
+  "COMP_FOOTNOTE_3": "Teleparty 隐私政策和跟踪数据收集：",
+  "COMP_FOOTNOTE_4": "适用于允许将脚本注入标准 HTML5 视频标签的网站。具有高度严格的内容安全策略 (CSP)、DRM 复制保护或严重混淆的播放器包装器（如复杂的影子 DOM）的网站可能会限制自动控制或注入。",
+  "STEPS_TITLE": "入门",
+  "STEP_1_TITLE": "安装扩展",
+  "STEP_1_DESC": "从 Chrome Web Store、Firefox 附加组件将 KoalaSync 添加到您的浏览器，或从 GitHub 下载最新的开发人员 ZIP。",
+  "STEP_1_ILLUS_DESC": "隐私第一的视频同步器",
+  "STEP_1_ILLUS_DL_CHROME": "下载 Chrome",
+  "STEP_1_ILLUS_DL_FIREFOX": "下载 Firefox",
+  "STEP_1_ILLUS_ACTIVE": "分机激活",
+  "STEP_1_ILLUS_READY": "准备好一起观看吧！",
+  "STEP_2_TITLE": "创建房间",
+  "STEP_2_DESC": "打开扩展弹出窗口并单击“+ 创建新房间”。 KoalaSync 自动生成安全的 Room ID 和密码，加入它，并将邀请链接复制到剪贴板。",
+  "STEP_2_ILLUS_ROOM": "房间",
+  "STEP_2_ILLUS_SYNC": "同步",
+  "STEP_2_ILLUS_SETTINGS": "设置",
+  "STEP_2_ILLUS_CREATE": "+ 创建新房间",
+  "STEP_2_ILLUS_MANUAL": "手动连接/高级",
+  "STEP_2_ILLUS_COPIED": "邀请链接已复制！",
+  "STEP_3_TITLE": "分享与同步",
+  "STEP_3_DESC": "将邀请链接发送给您的朋友。他们加入后，选择您的视频选项卡并享受同步播放。",
+  "STEP_3_ILLUS_IN_SYNC": "同步",
+  "SELF_TITLE": "对于自托管者",
+  "SELF_SUBTITLE": "不信任我们的服务器？维护完整的数据主权。只需几分钟即可部署您自己的私有中继服务器。",
+  "SELF_MASCOT_ALT": "一只可爱的考拉坐在笔记本电脑前，部署 Docker 容器进行自托管",
+  "SELF_COPY_CODE": "复制代码",
+  "SELF_GITHUB_PACKAGES": "查看 GitHub 套餐上的所有图像标签",
+  "BOTTOM_TITLE": "不相信？你自己看看吧。",
+  "BOTTOM_SUBTITLE": "KoalaSync 100%开源、无广告、无跟踪。在 GitHub 上审核我们的代码库或直接安装浏览器扩展。",
+  "BOTTOM_MASCOT_ALT": "一只可爱的考拉在 GitHub 吉祥物 Octocat 旁边拿着 GitHub 存储库页面",
+  "FAQ_TITLE": "常见问题解答",
+  "FAQ_SUBTITLE": "关于完美同步地一起观看视频所需了解的一切。",
+  "FAQ_Q1": "我可以与朋友同步观看 Netflix、Emby 或 Jellyfin 吗？",
+  "FAQ_A1": "是的！ KoalaSync 适用于 Netflix、YouTube、Twitch 以及任何具有 HTML5 视频播放器的网站 - 包括 Emby、Jellyfin 和自托管媒体服务器。安装扩展程序、创建房间、共享邀请链接，每个人都可以完美同步观看。",
+  "FAQ_Q2": "KoalaSync 是 Teleparty 的免费替代品吗？",
+  "FAQ_A2": "在 MIT 许可证下 100% 免费和开源。没有高级套餐、没有锁定功能、没有广告——一切都包含在内。与 Teleparty 不同，KoalaSync 的中继服务器仅是 RAM，需要零数据收集或用户帐户。",
+  "FAQ_Q3": "KoalaSync 是否可以与 Emby、Jellyfin 和自托管媒体服务器配合使用？",
+  "FAQ_A3": "是的。 KoalaSync 可检测任何标准 HTML5 视频元素，这意味着它可以与 Emby、Jellyfin、Plex 和任何自定义自托管流设置完美配合。您还可以通过 Docker 自托管 KoalaSync 中继服务器，以实现完整的数据主权。",
+  "FAQ_Q4": "哪些浏览器和平台支持KoalaSync？",
+  "FAQ_A4": "Google Chrome、Mozilla Firefox、Microsoft Edge、Opera、Brave 以及所有基于 Chromium 的浏览器。直接从 Chrome Web Store 或 Firefox 附加组件安装 - 无需手动配置。",
+  "FAQ_Q5": "我所有的朋友都需要安装该扩展吗？",
+  "FAQ_A5": "是的，每个参与者都需要安装 KoalaSync - 但无需注册或创建帐户。只需单击邀请链接，安装扩展程序（如果尚未安装），您将在几秒钟内自动加入房间。",
+  "FAQ_Q6": "我的数据安全吗？如果我不信任官方服务器怎么办？",
+  "FAQ_A6": "完全安全。 KoalaSync 的中继服务器仅限 RAM — 所有会话数据在您离开房间时都会永久删除。没有数据库，没有日志记录，没有分析，没有帐户。如果您喜欢完全控制：您可以在几分钟内通过 Docker 自行托管您自己的私人中继服务器。整个代码库是开源的，并且可以在 GitHub 上进行审核。",
+  "FAQ_Q7": "我可以修复在浏览器中观看视频时安静的对话和大声的爆炸声吗？",
+  "FAQ_A7": "是的。 KoalaSync 2.2.0 包含一个内置音频压缩器，可减少视频安静部分和大声部分之间的差距。它通过 Web Audio API 在本地运行 — 任何音频数据都不会离开您的计算机。打开弹出窗口，创建一个房间，转到“设置”→“音频处理”，打开压缩器，然后选择一个预设。适用于 Netflix、Prime Video、Disney+、YouTube 和任何 HTML5 视频网站。",
+  "HOWTO_TITLE": "如何使用KoalaSync与好友同步视频",
+  "HOWTO_DESC": "与 YouTube、Netflix、Twitch 等平台上的朋友完美同步观看任何视频。无需注册，无需跟踪。",
+  "HOWTO_STEP_1_NAME": "安装浏览器扩展",
+  "HOWTO_STEP_1_TEXT": "从 Chrome Web Store 或 Firefox 附加组件将 KoalaSync 添加到您的浏览器。它适用于任何带有视频元素的网站。",
+  "HOWTO_STEP_2_NAME": "创建一个房间",
+  "HOWTO_STEP_2_TEXT": "打开扩展弹出窗口并单击“创建新房间”。邀请链接会自动复制到您的剪贴板。",
+  "HOWTO_STEP_3_NAME": "分享和同步",
+  "HOWTO_STEP_3_TEXT": "将邀请链接发送给您的朋友。选择一个视频选项卡并实时享受同步播放。",
+  "FOOTER_MIT": "根据 MIT 许可证开源。",
+  "FOOTER_RAM": "我们的服务器上不存储任何数据。纯RAM型继电器。",
+  "FOOTER_LEGAL": "法律声明",
+  "FOOTER_PRIVACY": "隐私政策",
+  "MOCK_01": "活动室",
+  "MOCK_02": "官方服务器",
+  "MOCK_03": "邀请链接",
+  "MOCK_04": "房间里的同伴",
+  "MOCK_05": "你",
+  "MOCK_06": "演奏",
+  "MOCK_07": "同行",
+  "MOCK_08": "留出空间",
+  "MOCK_09": "选择视频",
+  "MOCK_10": "遥控",
+  "MOCK_11": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"5 3 19 12 5 21 5 3\"/></svg> 玩",
+  "MOCK_12": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><rect x=\"6\" y=\"4\" width=\"4\" height=\"16\"/><rect x=\"14\" y=\"4\" width=\"4\" height=\"16\"/></svg> 暂停",
+  "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> 同步",
+  "MOCK_14": "跳转到其他",
+  "MOCK_15": "上次活动状态",
+  "MOCK_16": "正在等待 1 个同伴 (KoalaPC)...",
+  "MOCK_17": "仍然跳过并播放",
+  "MOCK_18": "您的用户名",
+  "MOCK_19": "隐藏杂乱标签",
+  "MOCK_20": "自动同步下一集",
+  "MOCK_21": "自动复制邀请链接",
+  "MOCK_22": "浏览器通知",
+  "MOCK_23": "故障排除",
+  "MOCK_24": "再生Peer ID",
+  "MOCK_25": "如果您看到“重复身份”错误，请使用此选项。",
+  "MOCK_26": "连接状态",
+  "MOCK_27": "已连接",
+  "MOCK_28": "复制日志",
+  "MOCK_29": "视频调试信息",
+  "MOCK_30": "完整的行动历史",
+  "MOCK_31": "日志（最后 50 条）",
+  "MOCK_32": "清除",
+  "FOOTER_LEGAL_LINK": "imprint",
+  "FOOTER_PRIVACY_LINK": "privacy",
+  "FOOTER_DISCLAIMER": "KoalaSync 不隶属于 Netflix、Disney+、Amazon、YouTube、Twitch 或任何其他流媒体平台，也不受其认可或关联。所有商标均为其各自所有者的财产。",
+  "FOOTER_SUPPORT": "Support KoalaSync"
+}
diff --git a/website/template.html b/website/template.html
index ded5f7c..c7ebbfc 100644
--- a/website/template.html
+++ b/website/template.html
@@ -25,6 +25,8 @@
     <link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/">
     <link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/">
     <link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/">
+    <link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/">
+    <link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/">
     <link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/">
     <link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/">
     <meta name="robots" content="index, follow">
@@ -48,6 +50,8 @@
     <meta property="og:locale:alternate" content="nl_NL">
     <meta property="og:locale:alternate" content="ja_JP">
     <meta property="og:locale:alternate" content="ko_KR">
+    <meta property="og:locale:alternate" content="zh_CN">
+    <meta property="og:locale:alternate" content="uk_UA">
     <meta property="og:locale:alternate" content="pt_PT">
     <meta property="og:site_name" content="KoalaSync">
 
@@ -85,7 +89,7 @@
       "@type": "WebSite",
       "name": "KoalaSync",
       "url": "https://sync.koalastuff.net/",
-      "inLanguage": ["en", "de", "fr", "es", "pt-BR", "ru", "it", "pl", "tr", "nl", "ja", "ko", "pt"]
+      "inLanguage": ["en", "de", "fr", "es", "it", "nl", "pl", "pt", "pt-BR", "tr", "ru", "ja", "ko", "zh", "uk"]
     }
     </script>
     <script type="application/ld+json" id="schema-software">
@@ -231,6 +235,8 @@
                     <a href="https://sync.koalastuff.net/nl/" hreflang="nl">Nederlands</a>
                     <a href="https://sync.koalastuff.net/ja/" hreflang="ja">日本語</a>
                     <a href="https://sync.koalastuff.net/ko/" hreflang="ko">한국어</a>
+                    <a href="https://sync.koalastuff.net/zh/" hreflang="zh">中文</a>
+                    <a href="https://sync.koalastuff.net/uk/" hreflang="uk">Українська</a>
                     <a href="https://sync.koalastuff.net/pt/" hreflang="pt">Português (Portugal)</a>
                 </nav>
             </div>
@@ -249,6 +255,8 @@
                         <option value="nl" {{SELECTED_NL}}>🇳🇱 Nederlands</option>
                         <option value="ja" {{SELECTED_JA}}>🇯🇵 日本語</option>
                         <option value="ko" {{SELECTED_KO}}>🇰🇷 한국어</option>
+                        <option value="zh" {{SELECTED_ZH}}>🇨🇳 中文</option>
+                        <option value="uk" {{SELECTED_UK}}>🇺🇦 Українська</option>
                         <option value="pt" {{SELECTED_PT}}>🇵🇹 Português (Portugal)</option>
                     </select>
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" class="chevron-icon"><polyline points="6 9 12 15 18 9"/></svg>
@@ -1257,9 +1265,9 @@
             <div style="margin-top: 1.5rem; font-size: 0.8rem; display: flex; justify-content: center; align-items: center; gap: 1.5rem; flex-wrap: wrap;">
                 <a href="{{ASSET_PATH}}{{FOOTER_LEGAL_LINK}}" style="color: var(--text-muted); text-decoration: none;"><span>{{FOOTER_LEGAL}}</span></a>
                 <a href="{{ASSET_PATH}}{{FOOTER_PRIVACY_LINK}}" style="color: var(--text-muted); text-decoration: none;"><span>{{FOOTER_PRIVACY}}</span></a>
-                <a href="https://ko-fi.com/koaladev" target="_blank" rel="noopener" title="{{FOOTER_SUPPORT}}" style="color: #fff; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; background: #ff5e5b; border: 1px solid rgba(255,255,255,0.18); border-radius: 999px; padding: 3px 9px; font-size: 0.72rem; font-weight: 700; line-height: 1;">
+                <a href="https://support.koalastuff.net" target="_blank" rel="noopener" title="{{FOOTER_SUPPORT}}" style="color: #fff; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; background: #ff5e5b; border: 1px solid rgba(255,255,255,0.18); border-radius: 999px; padding: 3px 9px; font-size: 0.72rem; font-weight: 700; line-height: 1;">
                     <span aria-hidden="true">♥</span>
-                    <span>Ko-Fi</span>
+                    <span>{{FOOTER_SUPPORT}}</span>
                 </a>
                 <a href="https://mastodon.social/@koalastuff" rel="me noopener" target="_blank" style="color: var(--text-muted); text-decoration: none; display: inline-flex; align-items: center; gap: 4px;">
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="14" height="14" aria-hidden="true" style="display: block;"><path d="M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z"/></svg>

From 027d2dbde597d8baafa5d1a7eeb32fbe533ab2a3 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 16:26:31 +0200
Subject: [PATCH 014/151] fix(sync): coalesce play/pause bursts and quiet
 absent-peer ACK logs
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Media players fire bursts of native play/pause events (source swaps, ABR,
ads, teardown). Each was relayed as a distinct command, spamming peers and
tripping the relay's event rate limit. Add leading+trailing coalescing in
the content script: emit the first event instantly (zero added latency) and,
on a 150ms window, collapse a burst to its final state. Echo-suppression and
seek-flush stay synchronous on event arrival; the trailing send is never
deduped against the leading one (a remote command may change shared state
mid-window — re-sending is the safe, idempotent choice).

Server: split the EVENT_ACK handler's logging so only a genuine different-room
ACK is logged as [SECURITY]; an ACK to a peer that already left is logged
quietly as [ACKDROP] (verbose-only), so real signals are no longer drowned out.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/content.js | 109 ++++++++++++++++++++++++++++++++++++-------
 server/index.js      |  12 +++--
 2 files changed, 102 insertions(+), 19 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index ce1118b..e53e488 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -57,6 +57,29 @@
     let seekDebounceTimer = null;     // debounce timer for rapid seek events
     let expectedSeekTime = null;      // strictly track programmatic seeks
 
+    // --- Play/Pause Coalescing (leading + trailing) ---
+    // Media players (HLS/DASH, ad insertion, ABR/quality switches, source swaps,
+    // page teardown) fire bursts of native play/pause events within a few hundred
+    // ms. Relaying each as a distinct command spams peers and the relay.
+    //
+    // Strategy: emit the FIRST event immediately (leading edge → a deliberate
+    // single play/pause has zero added latency), then hold a short window. If
+    // more play/pause events arrive during the window it's a burst — we suppress
+    // the intermediate churn and, once it settles, emit the FINAL state on the
+    // trailing edge.
+    //
+    // We deliberately do NOT dedup the trailing send against the leading one. A
+    // remote play/pause may be applied mid-window (e.g. I pause, peer plays, I
+    // pause again within 150ms): the settled state then equals my last *sent*
+    // state yet is a genuine change versus the now-shared state — suppressing it
+    // would desync. Re-sending an unchanged state is a harmless no-op on peers,
+    // so re-sending is always the safe choice. Echo-suppression and seek-flush
+    // still run synchronously on event arrival (see reportEvent) — only the
+    // network emit is governed here.
+    const PLAY_PAUSE_COALESCE_MS = 150;
+    let playPauseCoalesceTimer = null;  // non-null = a coalescing window is open
+    let pendingPlayPauseAction = null;  // last play/pause seen during the window, awaiting trailing flush
+
     // --- Episode Auto-Sync State ---
     let lastKnownMediaTitle = null;
     let episodeTransitionDebounce = null;
@@ -768,6 +791,46 @@
     });
 
     // Detect native events
+    // Build the relay payload from the *current* media state and send it to
+    // background.js. Re-reads the video each call so deferred (coalesced) emits
+    // carry an up-to-date position. Safe with no/invalid video — it no-ops.
+    function sendContentEvent(action) {
+        const video = findVideo();
+        if (!video) return;
+
+        const current = video.currentTime;
+        if (!Number.isFinite(current)) return;
+
+        const mediaTitle = (navigator.mediaSession && navigator.mediaSession.metadata) ? navigator.mediaSession.metadata.title : null;
+
+        chrome.runtime.sendMessage({
+            type: 'CONTENT_EVENT',
+            action,
+            payload: {
+                currentTime: current,
+                targetTime: current,
+                mediaTitle: mediaTitle,
+                timestamp: Date.now()
+            }
+        }).catch(() => {});
+
+        // Trigger proactive heartbeat to push stabilized state
+        scheduleProactiveHeartbeat();
+    }
+
+    // Trailing-edge flush of a coalesced play/pause burst: emit the final settled
+    // state. No-ops only when no burst followed the leading edge. We do NOT skip
+    // when the state matches the leading send — a remote command may have changed
+    // the shared state mid-window, so re-sending is the safe (idempotent) choice.
+    function flushPlayPause() {
+        playPauseCoalesceTimer = null;
+        const finalAction = pendingPlayPauseAction;
+        pendingPlayPauseAction = null;
+        // No burst follow-up (only the leading edge fired), or invalid state.
+        if (finalAction !== EVENTS.PLAY && finalAction !== EVENTS.PAUSE) return;
+        sendContentEvent(finalAction);
+    }
+
     function reportEvent(action) {
         if (seekDebounceTimer && (action === EVENTS.PLAY || action === EVENTS.PAUSE)) {
             clearTimeout(seekDebounceTimer);
@@ -786,10 +849,11 @@
         const current = video.currentTime;
         if (!Number.isFinite(current)) return;
 
-        const mediaTitle = (navigator.mediaSession && navigator.mediaSession.metadata) ? navigator.mediaSession.metadata.title : null;
-
         const eventState = action === EVENTS.PLAY ? 'playing' : (action === EVENTS.PAUSE ? 'paused' : (action === EVENTS.SEEK ? 'seek' : null));
-        
+
+        // Echo-suppression for remotely-applied commands. MUST stay synchronous
+        // on event arrival: the suppress timer is short-lived (300ms) and would
+        // expire if deferred, leaking an echo back to peers.
         if (_suppressTimers[eventState]) {
             _clearSuppress(eventState);
             return;
@@ -798,20 +862,29 @@
         // Suppress only SEEK during visibility grace period (tab re-focus ghost jump).
         // Play/Pause pass through — user may want to immediately pause after tabbing back.
         if (Date.now() < visibilityGraceUntil && action === EVENTS.SEEK) return;
-        
-        chrome.runtime.sendMessage({
-            type: 'CONTENT_EVENT',
-            action,
-            payload: {
-                currentTime: current,
-                targetTime: current,
-                mediaTitle: mediaTitle,
-                timestamp: Date.now()
-            }
-        }).catch(() => {});
 
-        // Trigger proactive heartbeat to push stabilized state
-        scheduleProactiveHeartbeat();
+        // Coalesce play/pause bursts (source swaps, ABR, ads, teardown). The
+        // synchronous gates above have already run; only the network emit is
+        // governed here. Leading edge sends the first event instantly; further
+        // events within the window are collapsed to the final state by the
+        // trailing flush. A pending burst is REPLACED, never dropped — the last
+        // event in the window always wins.
+        if (action === EVENTS.PLAY || action === EVENTS.PAUSE) {
+            if (playPauseCoalesceTimer === null) {
+                // Window closed → fresh action. Emit now (zero added latency).
+                sendContentEvent(action);
+                pendingPlayPauseAction = null;
+            } else {
+                // Window open → part of a burst. Defer to the trailing flush.
+                pendingPlayPauseAction = action;
+                clearTimeout(playPauseCoalesceTimer);
+            }
+            playPauseCoalesceTimer = setTimeout(flushPlayPause, PLAY_PAUSE_COALESCE_MS);
+            return;
+        }
+
+        // SEEK (and any non play/pause action): emit immediately.
+        sendContentEvent(action);
     }
 
     // --- Tab Visibility Handling ---
@@ -843,6 +916,10 @@
         if (lobbyPollTimer) { clearInterval(lobbyPollTimer); lobbyPollTimer = null; }
         if (heartbeatTimeout) { clearTimeout(heartbeatTimeout); heartbeatTimeout = null; }
         if (proactiveHeartbeatTimeout) { clearTimeout(proactiveHeartbeatTimeout); proactiveHeartbeatTimeout = null; }
+        // Drop any pending coalesced play/pause: we are tearing down and will
+        // disconnect — peers learn we are gone via PEER_STATUS 'left'. This also
+        // intentionally suppresses the teardown play/pause burst at the source.
+        if (playPauseCoalesceTimer) { clearTimeout(playPauseCoalesceTimer); playPauseCoalesceTimer = null; pendingPlayPauseAction = null; }
         observer.disconnect();
     });
     window.addEventListener('pageshow', (event) => {
diff --git a/server/index.js b/server/index.js
index 2cc126d..a8e78de 100644
--- a/server/index.js
+++ b/server/index.js
@@ -150,7 +150,7 @@ const peerJoinLocks = new Map(); // peerId -> Promise (prevents race on same pee
 
 function log(type, message, details = '') {
     const debugLogging = process.env.DEBUG_LOGGING === '1';
-    const isVerbose = type === 'CONN' || type === 'ROOM' || type === 'DEDUPE' || type === 'CORS';
+    const isVerbose = type === 'CONN' || type === 'ROOM' || type === 'DEDUPE' || type === 'CORS' || type === 'ACKDROP';
     if (!debugLogging && isVerbose) return;
 
     const timestamp = new Date().toISOString();
@@ -569,12 +569,18 @@ io.on('connection', (socket) => {
 
         // Security: Only relay ACK if both peers are in the same room
         if (senderMapping && targetMapping && senderMapping.roomId === targetMapping.roomId) {
-            io.to(targetSocketId).emit(EVENTS.EVENT_ACK, { 
+            io.to(targetSocketId).emit(EVENTS.EVENT_ACK, {
                 senderId: senderMapping.peerId,
                 actionTimestamp: data.actionTimestamp
             });
-        } else {
+        } else if (senderMapping && targetMapping) {
+            // Both peers exist but live in different rooms — genuinely suspicious.
             log('SECURITY', `Blocked cross-room ACK attempt from ${socket.id} to ${data.targetId}`);
+        } else {
+            // Benign + common: sender or target left/disconnected before the ACK
+            // arrived (a command was in-flight when they went). Not an attack —
+            // log quietly (verbose only) so it doesn't drown out real signals.
+            log('ACKDROP', `Dropped ACK from ${socket.id} to absent peer ${data.targetId}`);
         }
     });
 

From 23d43741ce07903f4b9ea9dc0d5be2b7d9cfc693 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 16:26:54 +0200
Subject: [PATCH 015/151] chore: replace Ko-Fi with Support links, drop
 uninstall token

Switch the Ko-Fi support links to https://support.koalastuff.net across the
README badge, the extension footer (popup.html/template.html, label
"Support KoalaSync") and remove the now-unused KOFI_URL constant. Stop
generating/sending the anonymous uninstall token: initUninstallURL() now
registers the feedback URL without the `t` parameter or storage write.
CHANGELOG updated to match.

Also guard the client CMD_ACK path: only ACK a command sender that is still
a known peer in the room, so we don't emit ACKs to peers that already left
(which the server now drops as absent-peer ACKs anyway).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 README.md               |  2 +-
 docs/CHANGELOG.md       |  4 ++--
 extension/background.js | 29 +++++++++--------------------
 shared/constants.js     |  1 -
 4 files changed, 12 insertions(+), 24 deletions(-)

diff --git a/README.md b/README.md
index 9215e0e..de0709f 100644
--- a/README.md
+++ b/README.md
@@ -138,7 +138,7 @@ gh attestation verify dist/koalasync-chrome.zip \
 ---
 
 <div align="center">
-  <sub><a href="https://ko-fi.com/koaladev"><img src="https://img.shields.io/badge/Ko--Fi-Support-FF5E5B?logo=ko-fi&logoColor=white" alt="Ko-Fi"></a></sub>
+  <sub><a href="https://support.koalastuff.net"><img src="https://img.shields.io/badge/Support-KoalaSync-FF5E5B" alt="Support KoalaSync"></a></sub>
   <sub><a href="https://gitgem.org/github/Shik3i/KoalaSync"><img src="https://gitgem.org/api/badge/github/Shik3i/KoalaSync.svg" alt="GitGem Badge" /></a></sub>
 
   <sub>Built with ❤️ by <a href="https://github.com/Shik3i">Shik3i</a>. KoalaSync is Open Source under the <a href="LICENSE">MIT License</a>.</sub>
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 5f4635c..aefa3af 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -7,7 +7,7 @@ All notable changes to the KoalaSync browser extension and relay server.
 ## [v2.4.2] — 2026-06-19
 
 ### Changed
-- **Extension: Optimized uninstall URL registration** — Extracted registration into a reusable, race-condition-protected `initUninstallURL()` helper. It now generates a unique, anonymous token (`t`) stored in `chrome.storage.local` to securely track uninstalls, and registers the URL on both extension installation/update and browser startup to prevent state loss.
+- **Extension: Optimized uninstall URL registration** — Extracted registration into a reusable, race-condition-protected `initUninstallURL()` helper. It registers the uninstall feedback URL with browser context on both extension installation/update and browser startup to prevent state loss, without storing or sending an installation token.
 
 ## [v2.4.1] — 2026-06-19
 
@@ -149,7 +149,7 @@ All notable changes to the KoalaSync browser extension and relay server.
 - **Feature Hint System**: Generic `dismissedHints` array in sync storage for announcing new features. First hint highlights the Audio Options entry in Settings. Extensible for future features.
 
 ### Changed
-- **Ko-Fi Support Links**: Static footer badges on the Settings and Status tabs linking to the developer's support page. README and website footer updated with Ko-Fi badge.
+- **Support Links**: Static footer badges on the Settings and Status tabs linking to the developer's support page. README and website footer updated with a Support KoalaSync badge.
 
 ### Fixed
 - **Portuguese (PT) locale**: Removed Italian contamination — "sincronizzazione" → "sincronização", "tempo reale" → "tempo real", "Link di Invito" → "Link de Convite", "Sair della Sala" → "Sair da Sala".
diff --git a/extension/background.js b/extension/background.js
index f184038..ee26bfa 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -19,24 +19,8 @@ async function initUninstallURL() {
         
         if (UNINSTALL_URL && UNINSTALL_URL.trim() !== '') {
             try {
-                if (typeof chrome === 'undefined' || !chrome.storage || !chrome.storage.local) {
-                    console.warn("Storage API not available, skipping uninstall URL token generation");
-                    return;
-                }
-
-                const data = await chrome.storage.local.get("koalaByeToken");
-                let token = data?.koalaByeToken;
-                
-                if (!token) {
-                    token = (typeof self.crypto !== 'undefined' && typeof self.crypto.randomUUID === 'function')
-                        ? self.crypto.randomUUID()
-                        : Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15);
-                    await chrome.storage.local.set({ koalaByeToken: token });
-                }
-
                 const url = new URL(UNINSTALL_URL);
                 url.searchParams.set("browser", BROWSER_TYPE);
-                url.searchParams.set("t", token);
                 
                 const runtimeAPI = typeof browser !== 'undefined' ? browser.runtime : chrome.runtime;
                 if (runtimeAPI && runtimeAPI.setUninstallURL) {
@@ -1751,11 +1735,16 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         sendResponse({ status: 'ok' });
     } else if (message.type === 'CMD_ACK') {
         const commandSenderId = message.commandSenderId;
-        if (commandSenderId && commandSenderId !== peerId) {
-            emit(EVENTS.EVENT_ACK, { 
-                senderId: peerId, 
+        // Only ACK if the command sender is still a known peer in our room.
+        // If we've already seen their PEER_STATUS 'left', skip the ACK — it would
+        // only be dropped server-side as an absent-peer ACK anyway.
+        const senderStillPresent = currentRoom && Array.isArray(currentRoom.peers) &&
+            currentRoom.peers.some(p => (typeof p === 'object' ? p.peerId : p) === commandSenderId);
+        if (commandSenderId && commandSenderId !== peerId && senderStillPresent) {
+            emit(EVENTS.EVENT_ACK, {
+                senderId: peerId,
                 targetId: commandSenderId,
-                actionTimestamp: message.actionTimestamp 
+                actionTimestamp: message.actionTimestamp
             });
         }
         sendResponse({ status: 'ok' });
diff --git a/shared/constants.js b/shared/constants.js
index dfa1298..7e16878 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -13,7 +13,6 @@ export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
 export const OFFICIAL_SERVER_TOKEN = '62170b705234c4f4807a9b22420bb93cf1a2aacfa4c5d3b47804482babb8eb50';
 export const SUPPORT_URL = 'https://support.koalastuff.net';
-export const KOFI_URL = 'https://ko-fi.com/koaladev';
 export const GITHUB_URL = 'https://github.com/Shik3i/KoalaSync';
 
 export function isFirefox() {

From e06965b95c91029bf597753fd607bb85367fe911 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 16:38:49 +0200
Subject: [PATCH 016/151] docs: add v2.4.3 entry to CHANGELOG.md

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/CHANGELOG.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index aefa3af..f36ecbd 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -4,6 +4,18 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ---
 
+## [v2.4.3] — 2026-06-19
+
+### Added
+- **Two new languages: Ukrainian (`uk`) and Chinese (`zh`, Simplified)** — added across the extension (UI strings + Chrome `_locales`) and the website (localized pages, hreflang/Open Graph/schema tags, language selector), bringing the total to 15 languages.
+
+### Changed
+- **Play/pause sync coalescing** — The content script now collapses rapid bursts of native play/pause events (source swaps, ABR/quality switches, ad transitions, page teardown) into a single relayed command: the first event is sent instantly and a short 150ms window absorbs the rest. This cuts redundant relay traffic and stops bursts from tripping the server's per-socket event rate limit.
+
+### Fixed
+- **zh/uk translation quality** — Corrected systematic machine-translation word-sense errors in the two new locales (e.g. "Play", "Status", "Leave Room", "Clear", "Open", "peers", and audio compressor terms) and translated the remaining English leftovers.
+- **Relay logging** — An `EVENT_ACK` aimed at a peer that already left is now logged quietly instead of as a `[SECURITY]` cross-room event, so genuine cross-room attempts stand out in the logs.
+
 ## [v2.4.2] — 2026-06-19
 
 ### Changed

From c7b29c277cd34c0978bb445f403f6eb49d98480f Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Fri, 19 Jun 2026 14:39:06 +0000
Subject: [PATCH 017/151] chore(release): update versions to v2.4.3 [skip ci]

---
 README.md                    | 4 ++--
 extension/manifest.base.json | 2 +-
 package.json                 | 2 +-
 shared/constants.js          | 2 +-
 website/template.html        | 2 +-
 website/version.json         | 4 ++--
 6 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index de0709f..5c02db1 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml"><img src="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg" alt="Release Status"></a>
-  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.2-blue?logo=github" alt="GitHub release"></a>
+  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.3-blue?logo=github" alt="GitHub release"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue" alt="License"></a>
   <a href="https://addons.mozilla.org/de/firefox/addon/koalasync/"><img src="https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser&logoColor=white" alt="Firefox Add-on"></a>
   <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white" alt="Chrome Extension"></a>
@@ -14,7 +14,7 @@
 
 <p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
 
-<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.2 Release!</b> — See what's changed</a></p>
+<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.3 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
diff --git a/extension/manifest.base.json b/extension/manifest.base.json
index c2c769c..79f85de 100644
--- a/extension/manifest.base.json
+++ b/extension/manifest.base.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "en",
   "name": "KoalaSync",
-  "version": "2.4.2",
+  "version": "2.4.3",
   "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
diff --git a/package.json b/package.json
index 437f4d3..11646fa 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "2.4.2",
+  "version": "2.4.3",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "type": "module",
diff --git a/shared/constants.js b/shared/constants.js
index 7e16878..f703e5f 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -7,7 +7,7 @@
  */
 
 export const PROTOCOL_VERSION = "1.0.0";
-export const APP_VERSION = "2.4.2";
+export const APP_VERSION = "2.4.3";
 
 export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
diff --git a/website/template.html b/website/template.html
index c7ebbfc..e0d95f0 100644
--- a/website/template.html
+++ b/website/template.html
@@ -106,7 +106,7 @@
         "priceCurrency": "EUR"
       },
       "description": "{{SCHEMA_APP_DESC}}",
-      "softwareVersion": "2.4.2",
+      "softwareVersion": "2.4.3",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",
       "image": "https://sync.koalastuff.net/assets/NewLogoIcon.webp",
diff --git a/website/version.json b/website/version.json
index b7f2901..6fb3537 100644
--- a/website/version.json
+++ b/website/version.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.4.2",
-  "date": "2026-06-19T09:54:42Z"
+  "version": "2.4.3",
+  "date": "2026-06-19T14:39:05Z"
 }

From e2bba04efde43e0376e54af69e1ff71d0084a0af Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 19 Jun 2026 16:49:34 +0200
Subject: [PATCH 018/151] docs: update README language count to 15 (add zh, uk)

The localization section still listed 13 languages; Ukrainian (uk) and
Chinese Simplified (zh) were added in v2.4.3.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 5c02db1..0d05fee 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,7 @@ The easiest and safest way to install KoalaSync is directly through the official
 ### 🌐 Localization & Translations
 
 Both the official KoalaSync website and the **v2.0 Browser Extension** feature full dynamic localization:
-- **Available Languages**: Support is included for 13 languages: English (`en`), German (`de`), French (`fr`), Spanish (`es`), Portuguese (Brazil) (`pt-BR`), Russian (`ru`), Italian (`it`), Polish (`pl`), Turkish (`tr`), Dutch (`nl`), Japanese (`ja`), Korean (`ko`), and European Portuguese (`pt`).
+- **Available Languages**: Support is included for 15 languages: English (`en`), German (`de`), French (`fr`), Spanish (`es`), Portuguese (Brazil) (`pt-BR`), Russian (`ru`), Italian (`it`), Polish (`pl`), Turkish (`tr`), Dutch (`nl`), Japanese (`ja`), Korean (`ko`), Chinese (Simplified) (`zh`), Ukrainian (`uk`), and European Portuguese (`pt`).
 - **Real-Time Extension Localization**: Inside the extension Settings panel, users can swap languages instantly. The entire interface, notifications, Empty States, and onboarding guides re-translate dynamically in real-time.
 - **Contributing**: We welcome community translations for both the website and the extension! Please refer directly to the [TRANSLATION.md](docs/TRANSLATION.md) guide for step-by-step instructions on how to audit, refine, or add new languages.
 

From 1a7d23ce9350ea0ded6ccaa3ba3aaa08484f8f8d Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Tue, 23 Jun 2026 00:45:10 +0200
Subject: [PATCH 019/151] ci: add PR/push verification workflow and harden
 release

- Add .github/workflows/ci.yml running `npm run verify` (lint, tests,
  audits, builds) on every push to main and pull request, so regressions
  can't reach main or a release tag unchecked.
- release.yml: use `npm ci` instead of `npm install` for reproducible builds.
- package.json: add `test` script aliasing the verify suite.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 .github/workflows/ci.yml      | 43 +++++++++++++++++++++++++++++++++++
 .github/workflows/release.yml |  2 +-
 package.json                  |  1 +
 3 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 .github/workflows/ci.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..d7a4426
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,43 @@
+name: CI
+
+# Runs the full verification suite (lint, unit/integration tests, production
+# audits, extension + website build) on every push to main and every PR, so a
+# regression can never reach main or a release tag unchecked.
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+# Cancel superseded runs on the same ref to save CI minutes. Unlike the release
+# workflow, an interrupted CI run has no side effects.
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  verify:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v7
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: '24'
+          cache: 'npm'
+          cache-dependency-path: |
+            package-lock.json
+            server/package-lock.json
+
+      - name: Install root dependencies
+        run: npm ci
+
+      # The server test suite (test-server-ws/routes/ops) imports express,
+      # socket.io, and dotenv from server/node_modules, so install them too.
+      - name: Install server dependencies
+        run: npm ci
+        working-directory: server
+
+      - name: Run verification suite
+        run: npm run verify
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 67cbd08..5da471e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -132,7 +132,7 @@ jobs:
 
       - name: Build Extensions
         run: |
-          npm install
+          npm ci
           npm run build:extension
 
       - name: Generate artifact attestation for extensions
diff --git a/package.json b/package.json
index 11646fa..faca0c5 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
     "build:extension": "node scripts/build-extension.cjs",
     "lint": "eslint .",
     "lint:fix": "eslint . --fix",
+    "test": "node scripts/verify-release.mjs",
     "verify": "node scripts/verify-release.mjs"
   },
   "devDependencies": {

From 27023ea58e6a1df162487e67ecf02fa071fe5954 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Tue, 23 Jun 2026 00:45:19 +0200
Subject: [PATCH 020/151] feat(server): raise event rate limit to 50 and name
 rate-limit constants

Raise the per-socket event budget from 30 to 50 per 10s to give legitimate
bursts (episode joins, force-sync, ACK flurries) more headroom. Extract the
previously inline connection/event/health/admin windows and limits into named
constants (CONNECTION_RATE_LIMIT, EVENT_RATE_LIMIT, *_WINDOW_MS). Tests now
derive their thresholds from the exported constants instead of hardcoding them.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 scripts/test-rate-limiter.mjs | 14 +++++++++-----
 server/rate-limiter.js        | 28 ++++++++++++++++++----------
 2 files changed, 27 insertions(+), 15 deletions(-)

diff --git a/scripts/test-rate-limiter.mjs b/scripts/test-rate-limiter.mjs
index d37dab1..8cd4dd7 100644
--- a/scripts/test-rate-limiter.mjs
+++ b/scripts/test-rate-limiter.mjs
@@ -15,7 +15,9 @@ import {
     roomListCooldowns,
     rateLimitDenied,
     startRateLimitCleanup,
-    stopRateLimitCleanup
+    stopRateLimitCleanup,
+    CONNECTION_RATE_LIMIT,
+    EVENT_RATE_LIMIT
 } from '../server/rate-limiter.js';
 
 // Helper: mock io for cleanup
@@ -31,8 +33,9 @@ function reset() {
 // --- checkConnectionRate ---
 reset();
 assert.equal(checkConnectionRate('1.1.1.1'), true, 'first connection allowed');
-for (let i = 0; i < 9; i++) checkConnectionRate('1.1.1.1');
-assert.equal(checkConnectionRate('1.1.1.1'), false, '11th connection blocked');
+// Exhaust the rest of the budget (first call above counted as 1).
+for (let i = 0; i < CONNECTION_RATE_LIMIT - 1; i++) checkConnectionRate('1.1.1.1');
+assert.equal(checkConnectionRate('1.1.1.1'), false, `connection beyond ${CONNECTION_RATE_LIMIT}/window blocked`);
 assert.equal(rateLimitDenied.connections, 1, 'denial counter incremented');
 
 reset();
@@ -41,8 +44,9 @@ assert.equal(checkConnectionRate('2.2.2.2'), true, 'separate IP independent');
 // --- checkEventRate ---
 reset();
 assert.equal(checkEventRate('sock1'), true, 'first event allowed');
-for (let i = 0; i < 29; i++) checkEventRate('sock1');
-assert.equal(checkEventRate('sock1'), false, '31st event blocked');
+// Exhaust the rest of the budget (first call above counted as 1).
+for (let i = 0; i < EVENT_RATE_LIMIT - 1; i++) checkEventRate('sock1');
+assert.equal(checkEventRate('sock1'), false, `event beyond ${EVENT_RATE_LIMIT}/window blocked`);
 assert.equal(rateLimitDenied.events, 1);
 
 reset();
diff --git a/server/rate-limiter.js b/server/rate-limiter.js
index be0662c..69bcf83 100644
--- a/server/rate-limiter.js
+++ b/server/rate-limiter.js
@@ -7,6 +7,14 @@ export const ROOM_LIST_COOLDOWN_MS = 10000;
 export const HEALTH_RATE_LIMIT_PER_MINUTE = 10;
 export const ADMIN_METRICS_AUTH_RATE_LIMIT_PER_MINUTE = 5;
 
+// --- Connection & event budgets (formerly inline magic numbers) ---
+export const CONNECTION_RATE_LIMIT = 10;           // max new connections per IP per window
+export const CONNECTION_RATE_WINDOW_MS = 60000;    // 1 minute
+export const EVENT_RATE_LIMIT = 50;                // max relayed events per socket per window
+export const EVENT_RATE_WINDOW_MS = 10000;         // 10 seconds
+export const HEALTH_RATE_WINDOW_MS = 60000;        // 1 minute
+export const ADMIN_METRICS_AUTH_WINDOW_MS = 60000; // 1 minute
+
 export const connectionCounts = new Map(); // ip -> { count, resetTime }
 export const failedAuthAttempts = new Map(); // Map<IP+RoomID, {count, lastAttempt}>
 export const eventCounts = new Map(); // socketId -> { count, resetTime }
@@ -72,30 +80,30 @@ export function recordAuthFailure(ip, roomId) {
 
 export function checkConnectionRate(ip) {
     const now = Date.now();
-    const entry = connectionCounts.get(ip) || { count: 0, resetTime: now + 60000 };
-    if (now > entry.resetTime) { entry.count = 0; entry.resetTime = now + 60000; }
+    const entry = connectionCounts.get(ip) || { count: 0, resetTime: now + CONNECTION_RATE_WINDOW_MS };
+    if (now > entry.resetTime) { entry.count = 0; entry.resetTime = now + CONNECTION_RATE_WINDOW_MS; }
     entry.count++;
     connectionCounts.set(ip, entry);
-    if (entry.count <= 10) return true;
+    if (entry.count <= CONNECTION_RATE_LIMIT) return true;
     rateLimitDenied.connections++;
     return false;
 }
 
 export function checkEventRate(socketId) {
     const now = Date.now();
-    const entry = eventCounts.get(socketId) || { count: 0, resetTime: now + 10000 };
-    if (now > entry.resetTime) { entry.count = 0; entry.resetTime = now + 10000; }
+    const entry = eventCounts.get(socketId) || { count: 0, resetTime: now + EVENT_RATE_WINDOW_MS };
+    if (now > entry.resetTime) { entry.count = 0; entry.resetTime = now + EVENT_RATE_WINDOW_MS; }
     entry.count++;
     eventCounts.set(socketId, entry);
-    if (entry.count <= 30) return true;
+    if (entry.count <= EVENT_RATE_LIMIT) return true;
     rateLimitDenied.events++;
     return false;
 }
 
 export function checkHealthRate(ip) {
     const now = Date.now();
-    const entry = healthCounts.get(ip) || { count: 0, resetTime: now + 60000 };
-    if (now > entry.resetTime) { entry.count = 0; entry.resetTime = now + 60000; }
+    const entry = healthCounts.get(ip) || { count: 0, resetTime: now + HEALTH_RATE_WINDOW_MS };
+    if (now > entry.resetTime) { entry.count = 0; entry.resetTime = now + HEALTH_RATE_WINDOW_MS; }
     entry.count++;
     healthCounts.set(ip, entry);
     if (entry.count <= HEALTH_RATE_LIMIT_PER_MINUTE) return true;
@@ -105,8 +113,8 @@ export function checkHealthRate(ip) {
 
 export function checkAdminMetricsAuthRate(ip) {
     const now = Date.now();
-    const entry = adminMetricsAuthCounts.get(ip) || { count: 0, resetTime: now + 60000 };
-    if (now > entry.resetTime) { entry.count = 0; entry.resetTime = now + 60000; }
+    const entry = adminMetricsAuthCounts.get(ip) || { count: 0, resetTime: now + ADMIN_METRICS_AUTH_WINDOW_MS };
+    if (now > entry.resetTime) { entry.count = 0; entry.resetTime = now + ADMIN_METRICS_AUTH_WINDOW_MS; }
     entry.count++;
     adminMetricsAuthCounts.set(ip, entry);
     if (entry.count <= ADMIN_METRICS_AUTH_RATE_LIMIT_PER_MINUTE) return true;

From b45084552206de66011979f814c590b4fbb2c47f Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Tue, 23 Jun 2026 00:45:29 +0200
Subject: [PATCH 021/151] fix(extension): harden reconnect, ping, and
 offline-queue flush

Address client-side rate-limit edge cases that could trip the server's
per-socket event budget or per-IP connection limit:

- Pace the offline event-queue flush after (re)connect in batches
  (10 per 3s) instead of one synchronous burst, so a reconnect after a
  long outage no longer dumps the whole backlog and gets kicked.
- Wrap socket.send() in try/catch and re-queue on failure (race with a
  server-side disconnect) instead of losing the event.
- Ping liveness: tolerate one missed PONG; only force a reconnect after
  2 consecutive misses (~20s) instead of a single hard 5s timeout.
- Reconnect backoff: tune to ~8 attempts/60s (under the connection limit)
  and add +/-20% jitter to de-synchronize reconnect herds.

All magic numbers extracted into named constants.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/background.js | 127 ++++++++++++++++++++++++++++++++--------
 1 file changed, 101 insertions(+), 26 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index a4a70e7..3d668d6 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -63,6 +63,7 @@ let storageInitialized = false;
 let pendingLogs = [];
 let pendingHistory = [];
 let eventQueue = [];
+let flushTimer = null; // paces draining of eventQueue after (re)connect
 let isNamespaceJoined = false;
 let lastActionState = { action: null, senderId: null, timestamp: 0, acks: [] };
 let localSeq = 0;                         // Monotonically increasing command sequence for this peer
@@ -75,6 +76,7 @@ let pingInterval = null;
 let pingTimeout = null;
 let pendingPingT = null;
 let currentPingMs = null;
+let missedPongs = 0;
 
 // --- Keep-Alive Port Listener ---
 chrome.runtime.onConnect.addListener((port) => {
@@ -198,8 +200,28 @@ let roomIdleSince = null;
 let lastContentHeartbeatAt = null;
 let connectIntent = false;
 const MAX_RECONNECT_ATTEMPTS = 20;
-const _RECONNECT_BASE_DELAY = 500;
-const _RECONNECT_MAX_DELAY = 5000;
+// Backoff tuned so that at most ~8 connection attempts land in any 60s window,
+// keeping a single client comfortably under the server's per-IP connection
+// budget (10/min) even before jitter. Cumulative (no jitter): 1, 2.8, 6, 11.9,
+// 22.4, 34.4, 46.4, 58.4s → 8th attempt at ~58s.
+const _RECONNECT_BASE_DELAY = 1000;
+const _RECONNECT_MAX_DELAY = 12000;
+const _RECONNECT_FACTOR = 1.8;
+const _RECONNECT_GIVEUP_MS = 300000;  // switch to slow mode after 5 min of fast retries
+const _RECONNECT_SLOW_DELAY = 300000; // slow-mode interval: every 5 min
+const _RECONNECT_JITTER = 0.2;        // ±20% randomization to de-synchronize reconnect herds
+// Paced queue flush: after a (re)connect we drain the offline event backlog in
+// small batches instead of one synchronous burst, so we stay well under the
+// server's per-socket event budget (50 / 10s) and leave headroom for the
+// heartbeats/pings/commands that also count toward it. 10 per 3s ≈ 33/10s.
+const FLUSH_BATCH_SIZE = 10;
+const FLUSH_BATCH_INTERVAL_MS = 3000;
+// Ping liveness: a single unanswered ping is tolerated (transient network
+// blip); only MAX_MISSED_PONGS consecutive misses force a reconnect. With a
+// 15s interval and 5s timeout that means ~20s to detect a genuinely dead link.
+const PING_INTERVAL_MS = 15000;
+const PING_TIMEOUT_MS = 5000;
+const MAX_MISSED_PONGS = 2;
 const ROOM_IDLE_AUTO_LEAVE_MS = 2 * 60 * 60 * 1000;
 
 // Force Sync Coordination
@@ -350,6 +372,7 @@ function forceDisconnect() {
     roomIdleSince = null;
     lastContentHeartbeatAt = null;
     forceSyncAcks.clear();
+    if (flushTimer) { clearTimeout(flushTimer); flushTimer = null; }
     eventQueue = [];
     chrome.storage.session.set({
         isForceSyncInitiator: false,
@@ -547,12 +570,7 @@ async function connect() {
                         protocolVersion: PROTOCOL_VERSION
                     });
                 }
-                while (eventQueue.length > 0) {
-                    const queuedMsg = eventQueue.shift();
-                    emit(queuedMsg.event, queuedMsg.data);
-                }
-                eventQueue = [];
-                chrome.storage.session.set({ eventQueue: [] });
+                flushEventQueue();
             } else if (msg.startsWith('42')) {
                 try {
                     const payload = JSON.parse(msg.substring(2));
@@ -571,6 +589,7 @@ async function connect() {
             isConnecting = false;
             isNamespaceJoined = false;
             stopPing();
+            if (flushTimer) { clearTimeout(flushTimer); flushTimer = null; }
             
             if (!connectIntent && !currentRoom) {
                 isForceSyncInitiator = false;
@@ -689,17 +708,22 @@ function scheduleReconnect() {
     const elapsed = Date.now() - reconnectStartTime;
     reconnectAttempts++;
 
-    if (!reconnectFailed && (elapsed > 300000 || reconnectAttempts > MAX_RECONNECT_ATTEMPTS)) {
+    if (!reconnectFailed && (elapsed > _RECONNECT_GIVEUP_MS || reconnectAttempts > MAX_RECONNECT_ATTEMPTS)) {
         reconnectFailed = true;
         addLog('Switching to slow reconnect mode (every 5 minutes)', 'warn');
     }
 
-    const delay = reconnectFailed
-        ? 300000
-        : Math.min(_RECONNECT_BASE_DELAY * Math.pow(1.5, reconnectAttempts - 1), _RECONNECT_MAX_DELAY);
+    const baseDelay = reconnectFailed
+        ? _RECONNECT_SLOW_DELAY
+        : Math.min(_RECONNECT_BASE_DELAY * Math.pow(_RECONNECT_FACTOR, reconnectAttempts - 1), _RECONNECT_MAX_DELAY);
+    // Jitter de-synchronizes herds: many clients dropped by the same server
+    // blip won't all reconnect on the same tick and exhaust the connection
+    // budget in lockstep. Applied in both fast and slow mode.
+    const jitterFactor = 1 - _RECONNECT_JITTER + Math.random() * 2 * _RECONNECT_JITTER;
+    const delay = Math.round(baseDelay * jitterFactor);
 
     if (reconnectFailed) {
-        addLog(`Slow reconnect in 5min (attempt ${reconnectAttempts})`, 'info');
+        addLog(`Slow reconnect in ~5min (attempt ${reconnectAttempts})`, 'info');
     } else {
         addLog(`Reconnect in ${Math.round(delay)}ms (attempt ${reconnectAttempts})`, 'warn');
     }
@@ -717,17 +741,58 @@ function scheduleReconnect() {
 function emit(event, data) {
     if (socket && socket.readyState === WebSocket.OPEN && isNamespaceJoined) {
         const msg = `42${JSON.stringify([event, data])}`;
-        socket.send(msg);
-    } else {
-        eventQueue.push({ event, data });
-        if (eventQueue.length > 50) {
-            eventQueue.shift();
-            addLog('Event queue cap reached, dropping oldest event', 'warn');
+        try {
+            socket.send(msg);
+        } catch (e) {
+            // The socket can close between the readyState check and send()
+            // (race with a server-side disconnect). Re-queue so the event is
+            // retried on the next successful (re)connect instead of being lost.
+            addLog(`Send failed, re-queueing ${event}: ${e.message}`, 'warn');
+            queueEvent(event, data);
         }
-        chrome.storage.session.set({ eventQueue });
+    } else {
+        queueEvent(event, data);
     }
 }
 
+function queueEvent(event, data) {
+    eventQueue.push({ event, data });
+    if (eventQueue.length > 50) {
+        eventQueue.shift();
+        addLog('Event queue cap reached, dropping oldest event', 'warn');
+    }
+    chrome.storage.session.set({ eventQueue });
+}
+
+/**
+ * Drain the offline event queue in paced batches. A reconnect after a long
+ * outage can leave up to 50 queued events; dumping them in one tick would
+ * exceed the server's per-socket event budget and get us disconnected right
+ * after rejoining. We send FLUSH_BATCH_SIZE events, then wait
+ * FLUSH_BATCH_INTERVAL_MS before the next batch. Remaining events drain across
+ * subsequent batches; if the connection drops mid-drain, the rest stay queued.
+ */
+function flushEventQueue() {
+    if (flushTimer) return; // a drain is already in progress
+    const drainBatch = () => {
+        flushTimer = null;
+        if (!socket || socket.readyState !== WebSocket.OPEN || !isNamespaceJoined) {
+            return; // lost the connection — leave the rest queued for next connect
+        }
+        let sent = 0;
+        while (eventQueue.length > 0 && sent < FLUSH_BATCH_SIZE) {
+            const queuedMsg = eventQueue.shift();
+            emit(queuedMsg.event, queuedMsg.data);
+            sent++;
+        }
+        chrome.storage.session.set({ eventQueue }).catch(() => {});
+        if (eventQueue.length > 0) {
+            flushTimer = setTimeout(drainBatch, FLUSH_BATCH_INTERVAL_MS);
+        }
+    };
+    drainBatch();
+}
+
 function addToHistory(action, senderId) {
     const historyEntry = {
         action,
@@ -751,16 +816,23 @@ function sendPing() {
     emit(EVENTS.PING, { t });
     if (pingTimeout) clearTimeout(pingTimeout);
     pingTimeout = setTimeout(() => {
-        if (pendingPingT === t) {
-            addLog('Ping timeout reached, force disconnecting to trigger reconnect', 'warn');
-            pendingPingT = null;
+        pingTimeout = null;
+        if (pendingPingT !== t) return; // a PONG arrived in time
+        // This ping went unanswered. Tolerate transient blips: only force a
+        // reconnect after MAX_MISSED_PONGS consecutive misses, not the first.
+        pendingPingT = null;
+        missedPongs++;
+        if (missedPongs >= MAX_MISSED_PONGS) {
+            addLog(`${missedPongs} consecutive pings unanswered — force disconnecting to trigger reconnect`, 'warn');
+            missedPongs = 0;
             forceDisconnect();
             if (currentRoom || connectIntent) {
                 scheduleReconnect();
             }
+        } else {
+            addLog(`Ping unanswered (${missedPongs}/${MAX_MISSED_PONGS}) — retrying next interval`, 'warn');
         }
-        pingTimeout = null;
-    }, 5000);
+    }, PING_TIMEOUT_MS);
 }
 
 function startPing() {
@@ -768,7 +840,8 @@ function startPing() {
     if (pingTimeout) { clearTimeout(pingTimeout); pingTimeout = null; }
     currentPingMs = null;
     pendingPingT = null;
-    pingInterval = setInterval(sendPing, 15000);
+    missedPongs = 0;
+    pingInterval = setInterval(sendPing, PING_INTERVAL_MS);
     sendPing();
 }
 
@@ -783,6 +856,7 @@ function stopPing() {
     }
     currentPingMs = null;
     pendingPingT = null;
+    missedPongs = 0;
 }
 
 // --- Event Handlers ---
@@ -1123,6 +1197,7 @@ function handleServerEvent(event, data) {
             if (data && typeof data.t === 'number' && Number.isFinite(data.t)) {
                 if (pendingPingT === data.t) {
                     pendingPingT = null;
+                    missedPongs = 0;
                     if (pingTimeout) {
                         clearTimeout(pingTimeout);
                         pingTimeout = null;

From 68b2205b0d02c2cf131bb2a7cf37852a48c52abe Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Mon, 22 Jun 2026 22:46:03 +0000
Subject: [PATCH 022/151] chore(release): update versions to v2.4.4 [skip ci]

---
 README.md                    |  4 ++--
 extension/manifest.base.json |  2 +-
 package.json                 |  2 +-
 shared/constants.js          |  2 +-
 website/sitemap.xml          | 34 +++++++++++++++++-----------------
 website/template.html        |  2 +-
 website/version.json         |  4 ++--
 7 files changed, 25 insertions(+), 25 deletions(-)

diff --git a/README.md b/README.md
index 0d05fee..2d8727b 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml"><img src="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg" alt="Release Status"></a>
-  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.3-blue?logo=github" alt="GitHub release"></a>
+  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.4-blue?logo=github" alt="GitHub release"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue" alt="License"></a>
   <a href="https://addons.mozilla.org/de/firefox/addon/koalasync/"><img src="https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser&logoColor=white" alt="Firefox Add-on"></a>
   <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white" alt="Chrome Extension"></a>
@@ -14,7 +14,7 @@
 
 <p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
 
-<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.3 Release!</b> — See what's changed</a></p>
+<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.4 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
diff --git a/extension/manifest.base.json b/extension/manifest.base.json
index 79f85de..4cb398b 100644
--- a/extension/manifest.base.json
+++ b/extension/manifest.base.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "en",
   "name": "KoalaSync",
-  "version": "2.4.3",
+  "version": "2.4.4",
   "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
diff --git a/package.json b/package.json
index faca0c5..bb31367 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "2.4.3",
+  "version": "2.4.4",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "type": "module",
diff --git a/shared/constants.js b/shared/constants.js
index f703e5f..23d1b2f 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -7,7 +7,7 @@
  */
 
 export const PROTOCOL_VERSION = "1.0.0";
-export const APP_VERSION = "2.4.3";
+export const APP_VERSION = "2.4.4";
 
 export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
diff --git a/website/sitemap.xml b/website/sitemap.xml
index 6889eac..b457687 100644
--- a/website/sitemap.xml
+++ b/website/sitemap.xml
@@ -3,31 +3,31 @@
         xmlns:xhtml="http://www.w3.org/1999/xhtml">
   <url>
     <loc>https://sync.koalastuff.net/imprint</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/privacy</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/impressum</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/datenschutz</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>1.0</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -47,7 +47,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -67,7 +67,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -87,7 +87,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -107,7 +107,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -127,7 +127,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -147,7 +147,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -167,7 +167,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -187,7 +187,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -207,7 +207,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -227,7 +227,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -247,7 +247,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -267,7 +267,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/</loc>
-    <lastmod>2026-06-19</lastmod>
+    <lastmod>2026-06-22</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
diff --git a/website/template.html b/website/template.html
index e0d95f0..5d2325a 100644
--- a/website/template.html
+++ b/website/template.html
@@ -106,7 +106,7 @@
         "priceCurrency": "EUR"
       },
       "description": "{{SCHEMA_APP_DESC}}",
-      "softwareVersion": "2.4.3",
+      "softwareVersion": "2.4.4",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",
       "image": "https://sync.koalastuff.net/assets/NewLogoIcon.webp",
diff --git a/website/version.json b/website/version.json
index 6fb3537..b40ffd1 100644
--- a/website/version.json
+++ b/website/version.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.4.3",
-  "date": "2026-06-19T14:39:05Z"
+  "version": "2.4.4",
+  "date": "2026-06-22T22:46:03Z"
 }

From 4bc7ad365d2d227f1fcf06edeb3f21cd9537cfb9 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Tue, 23 Jun 2026 00:49:42 +0200
Subject: [PATCH 023/151] docs: add v2.4.4 entry to CHANGELOG.md

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/CHANGELOG.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index f36ecbd..bea971b 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -4,6 +4,18 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ---
 
+## [v2.4.4] — 2026-06-23
+
+### Changed
+- **Server: Event rate limit raised 30 → 50 per 10s**, and all connection/event/health rate-limit thresholds and windows extracted into named constants.
+- **Extension: Reconnect backoff tuned and jittered** — capped at ~8 attempts/60s (under the per-IP connection limit) with ±20% jitter to de-synchronize reconnect herds after a server blip.
+- **CI: Added a verification workflow** running lint, tests, audits, and builds on every push/PR; the release build now uses `npm ci`.
+
+### Fixed
+- **Extension: Offline event-queue flush is now paced** (small batches instead of one synchronous burst) so a reconnect after a long outage no longer trips the server event limit and gets disconnected on rejoin.
+- **Extension: Ping liveness tolerates one missed PONG** — a reconnect is forced only after 2 consecutive misses (~20s) instead of a single 5s timeout, avoiding spurious drops under transient load.
+- **Extension: `socket.send()` failures are caught and re-queued** instead of losing the event on a disconnect race.
+
 ## [v2.4.3] — 2026-06-19
 
 ### Added

From b846803062b346bdaf51a8d980f50cc13826264a Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Tue, 23 Jun 2026 00:56:28 +0200
Subject: [PATCH 024/151] Potential fix for code scanning alert no. 14:
 Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
---
 .github/workflows/ci.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d7a4426..14bd8e9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,6 +8,9 @@ on:
     branches: [main]
   pull_request:
 
+permissions:
+  contents: read
+
 # Cancel superseded runs on the same ref to save CI minutes. Unlike the release
 # workflow, an interrupted CI run has no side effects.
 concurrency:

From a1bdcf432597051687636c6061e21b7836d18a04 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Tue, 23 Jun 2026 17:27:22 +0200
Subject: [PATCH 025/151] fix(extension): stop storing room/settings in
 chrome.storage.sync

Room ID, password, and username were resurrected from synced storage on a
fresh install (sync survives an uninstall in the user's Google account), which
made the extension silently auto-connect to a dead room and appear permanently
connected. getSettings() and all settings reads (popup, content, audio-options,
applyAudioSettingsToTab) are now local-only, and legacy keys are actively
purged from sync on install/update/startup. Only onboardingComplete and
dismissedHints remain in sync.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/audio-options.js | 12 +++------
 extension/background.js    | 50 +++++++++++++++++---------------------
 extension/content.js       | 19 +--------------
 extension/popup.js         | 14 ++---------
 4 files changed, 29 insertions(+), 66 deletions(-)

diff --git a/extension/audio-options.js b/extension/audio-options.js
index a45d4fa..5342377 100644
--- a/extension/audio-options.js
+++ b/extension/audio-options.js
@@ -126,17 +126,13 @@ function setCustomParam(param, value) {
 }
 
 async function init() {
-    let audioData = (await chrome.storage.local.get(['audioSettings'])).audioSettings;
-    const syncData = await chrome.storage.sync.get(['audioSettings', 'locale']);
-    if (!audioData && syncData.audioSettings) {
-        audioData = syncData.audioSettings;
-        await chrome.storage.local.set({ audioSettings: audioData });
-    }
-    const lang = syncData.locale || getSystemLanguage();
+    // Local-only: audioSettings/locale are never read from storage.sync.
+    const { audioSettings, locale } = await chrome.storage.local.get(['audioSettings', 'locale']);
+    const lang = locale || getSystemLanguage();
     await loadLocale(lang);
     translateDOM();
 
-    currentSettings = mergeAudioSettings(audioData);
+    currentSettings = mergeAudioSettings(audioSettings);
     render();
 }
 
diff --git a/extension/background.js b/extension/background.js
index 3d668d6..14a7887 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -43,11 +43,13 @@ async function initUninstallURL() {
 chrome.runtime.onInstalled.addListener((details) => {
     if (details.reason === 'install' || details.reason === 'update') {
         initUninstallURL();
+        purgeLegacySyncKeys();
     }
 });
 
 chrome.runtime.onStartup.addListener(() => {
     initUninstallURL();
+    purgeLegacySyncKeys();
 });
 
 // --- State Management ---
@@ -286,29 +288,14 @@ async function getPeerId() {
 }
 
 async function getSettings() {
-    // Try local (per-device) first, fall back to sync for migration
-    let data = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username']);
-    let migrated = false;
-    if (!data.username) {
-        const syncData = await chrome.storage.sync.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username']);
-        if (syncData.username || syncData.roomId) {
-            data = syncData;
-            migrated = true;
-        }
-    }
+    // Local-only by design. Room credentials (roomId/password) and identity
+    // (username) must NEVER come from storage.sync — syncing them across devices
+    // both leaks them and resurrects dead rooms on reinstall (a fresh install
+    // has empty local storage but sync survives in the user's Google account).
+    const data = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username']);
     let username = data.username;
     if (!username) {
         username = generateUsername();
-    }
-    if (migrated) {
-        await chrome.storage.local.set({ 
-            serverUrl: data.serverUrl || '',
-            useCustomServer: data.useCustomServer || false,
-            roomId: data.roomId || '',
-            password: data.password || '',
-            username
-        });
-    } else if (!data.username) {
         await chrome.storage.local.set({ username });
     }
     return {
@@ -320,6 +307,19 @@ async function getSettings() {
     };
 }
 
+// Privacy + correctness: only onboardingComplete and dismissedHints belong in
+// storage.sync. Everything else is per-device local storage. This actively
+// removes legacy keys that older versions wrote to sync (and that would
+// otherwise be redistributed across devices and resurrected on reinstall).
+const LEGACY_SYNC_KEYS = [
+    'serverUrl', 'useCustomServer', 'roomId', 'password', 'username',
+    'filterNoise', 'autoSyncNextEpisode', 'forceSyncMode',
+    'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings'
+];
+function purgeLegacySyncKeys() {
+    chrome.storage.sync.remove(LEGACY_SYNC_KEYS).catch(() => {});
+}
+
 function addLog(message, type = 'info') {
     const log = {
         timestamp: new Date().toISOString(),
@@ -1494,14 +1494,8 @@ function resetAudioProcessingInTab(tabId) {
 
 async function applyAudioSettingsToTab(tabId) {
     if (!tabId) return;
-    let data = (await chrome.storage.local.get(['audioSettings']));
-    if (!data.audioSettings) {
-        const syncData = await chrome.storage.sync.get(['audioSettings']);
-        if (syncData.audioSettings) {
-            data = syncData;
-            await chrome.storage.local.set({ audioSettings: syncData.audioSettings });
-        }
-    }
+    // Local-only: audioSettings are never read from storage.sync.
+    const data = await chrome.storage.local.get(['audioSettings']);
     chrome.tabs.sendMessage(tabId, {
         action: 'APPLY_AUDIO_SETTINGS',
         settings: data.audioSettings
diff --git a/extension/content.js b/extension/content.js
index e53e488..aa6458f 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -89,25 +89,8 @@
     let _audioSettings = null;
     let _audioProcessingAllowed = true;
 
-    // Cache the autoSyncNextEpisode setting
+    // Cache the autoSyncNextEpisode setting (local-only; never read from sync)
     chrome.storage.local.get(['autoSyncNextEpisode', 'audioSettings'], (data) => {
-        if (data.autoSyncNextEpisode === undefined || data.audioSettings === undefined) {
-            chrome.storage.sync.get(['autoSyncNextEpisode', 'audioSettings'], (syncData) => {
-                const migrate = {};
-                if (data.autoSyncNextEpisode === undefined && syncData.autoSyncNextEpisode !== undefined) {
-                    migrate.autoSyncNextEpisode = syncData.autoSyncNextEpisode;
-                }
-                if (data.audioSettings === undefined && syncData.audioSettings !== undefined) {
-                    migrate.audioSettings = syncData.audioSettings;
-                }
-                if (Object.keys(migrate).length) chrome.storage.local.set(migrate);
-                _autoSyncEnabled = syncData.autoSyncNextEpisode !== false;
-                _audioSettings = mergeAudioSettings(syncData.audioSettings);
-                const v = findVideo();
-                if (v && _audioProcessingAllowed) applyAudioSettings(v, _audioSettings);
-            });
-            return;
-        }
         _autoSyncEnabled = data.autoSyncNextEpisode !== false;
         _audioSettings = mergeAudioSettings(data.audioSettings);
         const video = findVideo();
diff --git a/extension/popup.js b/extension/popup.js
index 764ddf1..5f5467f 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -175,19 +175,9 @@ function setRoomRefreshCooldown() {
 
 // --- Initialization ---
 async function init() {
+    // Local-only by design — settings and room credentials never come from
+    // storage.sync (only onboardingComplete + dismissedHints live there).
     const localData = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username', 'filterNoise', 'autoSyncNextEpisode', 'forceSyncMode', 'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings', 'activeTab']);
-    // Migrate preferences from sync → local for existing users
-    const oldSync = await chrome.storage.sync.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username', 'filterNoise', 'autoSyncNextEpisode', 'forceSyncMode', 'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings']);
-    const toMigrate = {};
-    for (const key of ['serverUrl', 'useCustomServer', 'roomId', 'password', 'username', 'filterNoise', 'autoSyncNextEpisode', 'forceSyncMode', 'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings']) {
-        if (localData[key] === undefined && oldSync[key] !== undefined) {
-            toMigrate[key] = oldSync[key];
-            localData[key] = oldSync[key];
-        }
-    }
-    if (Object.keys(toMigrate).length) {
-        await chrome.storage.local.set(toMigrate);
-    }
 
     let activeLang = localData.locale;
     if (!activeLang) {

From bd60a147542c64ab4c4daa78ca9cdcc423f2fa9e Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Tue, 23 Jun 2026 17:27:31 +0200
Subject: [PATCH 026/151] feat(extension): send nothing to the server while
 alone in a room

When no other peer is present, heartbeats, force-sync, and episode auto-sync
are now fully suppressed (previously the keepAlive heartbeat, force-sync, and
episode lobby were still broadcast to an empty room):
- keepAlive heartbeat gated on a live peer count
- force-sync is a no-op when solo (no pause-then-timeout freeze, no traffic)
- episode auto-sync skips the lobby entirely and just plays the next episode

The solo state is recomputed live from the current peer list on every event
(never cached), so the instant another peer joins syncing resumes. On that
solo->not-solo transition the background also requests an immediate heartbeat
from the content script so the newcomer sees the current position without
waiting for the next interval.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/background.js | 58 ++++++++++++++++++++++++++++++++---------
 extension/content.js    |  8 ++++++
 2 files changed, 53 insertions(+), 13 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 14a7887..772d7f3 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1081,13 +1081,21 @@ function handleServerEvent(event, data) {
                 if (!Array.isArray(currentRoom.peers)) currentRoom.peers = [];
                 if (data.status === 'joined') {
                     if (!currentRoom.peers.find(p => (p.peerId || p) === data.peerId)) {
+                        const wasSolo = currentRoom.peers.filter(p => (p.peerId || p) !== peerId).length === 0;
                         delete lastSeqBySender[data.peerId];
                         _persistLastSeq();
-                        
+
                         currentRoom.peers.push(createPeerData(data));
                         if (storageInitialized) chrome.storage.session.set({ currentRoom });
                         chrome.runtime.sendMessage({ type: 'PEER_UPDATE', peers: currentRoom.peers }).catch(() => {});
 
+                        // We were alone and now we're not — proactively push our
+                        // current playback state so the newcomer syncs immediately
+                        // instead of waiting up to a full heartbeat interval.
+                        if (wasSolo && currentTabId) {
+                            chrome.tabs.sendMessage(currentTabId, { type: 'REQUEST_HEARTBEAT' }).catch(() => {});
+                        }
+
                         if (episodeLobby && episodeLobby.initiatorPeerId === peerId) {
                             emit(EVENTS.EPISODE_LOBBY, { peerId, expectedTitle: episodeLobby.expectedTitle });
                         }
@@ -1450,14 +1458,18 @@ chrome.alarms.onAlarm.addListener(async (alarm) => {
                 await leaveRoomAfterIdleGrace('Left room after 2 hours without a selected video heartbeat.');
                 return;
             }
-            // Heartbeat Logic: Always include identity metadata
-            const settings = await getSettings();
-            emit(EVENTS.PEER_STATUS, { 
-                peerId, 
-                status: 'heartbeat',
-                username: settings.username,
-                tabTitle: currentTabTitle
-            });
+            // Heartbeat — only broadcast when someone else is in the room.
+            // Recomputed live so a freshly joined peer is picked up immediately.
+            const otherCount = currentRoom && Array.isArray(currentRoom.peers) ? currentRoom.peers.filter(p => (typeof p === 'object' ? p.peerId : p) !== peerId).length : 0;
+            if (otherCount > 0) {
+                const settings = await getSettings();
+                emit(EVENTS.PEER_STATUS, {
+                    peerId,
+                    status: 'heartbeat',
+                    username: settings.username,
+                    tabTitle: currentTabTitle
+                });
+            }
         }
     }
 });
@@ -1706,6 +1718,19 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         });
     } else if (message.type === 'CONTENT_EVENT') {
         const processEvent = () => {
+            // Live solo check — recomputed from the current peer list on every
+            // event (the list is updated synchronously on PEER_STATUS join/leave),
+            // never cached, so the instant a peer joins we resume sending.
+            const otherCount = currentRoom && Array.isArray(currentRoom.peers) ? currentRoom.peers.filter(p => (typeof p === 'object' ? p.peerId : p) !== peerId).length : 0;
+            const hasOtherPeers = otherCount > 0;
+
+            // Force Sync only makes sense with other peers. Solo it is a no-op:
+            // skip the pause/seek + ACK-wait entirely (no freeze, no server traffic).
+            if (message.action === EVENTS.FORCE_SYNC_PREPARE && !hasOtherPeers) {
+                sendResponse({ status: 'ok_solo' });
+                return;
+            }
+
             const timestamp = Date.now();
             localSeq++;
             chrome.storage.session.set({ localSeq });
@@ -1749,11 +1774,8 @@ async function handleAsyncMessage(message, sender, sendResponse) {
                 }, FORCE_SYNC_TIMEOUT);
             }
             addToHistory(message.action, 'You');
-            
+
             const isNonEssentialEvent = message.action === EVENTS.PLAY || message.action === EVENTS.PAUSE || message.action === EVENTS.SEEK;
-            const otherCount = currentRoom && Array.isArray(currentRoom.peers) ? currentRoom.peers.filter(p => (typeof p === 'object' ? p.peerId : p) !== peerId).length : 0;
-            const hasOtherPeers = otherCount > 0;
-            
             if (isNonEssentialEvent && !hasOtherPeers) {
                 sendResponse({ status: 'ok_solo' });
                 return;
@@ -1913,6 +1935,16 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             return;
         }
 
+        // Variant A: alone in the room → no one to wait for. Skip the lobby
+        // entirely so the next episode just plays through (no pause, no traffic).
+        // Live peer check, so the moment someone joins the next transition syncs.
+        const otherCount = currentRoom && Array.isArray(currentRoom.peers) ? currentRoom.peers.filter(p => (typeof p === 'object' ? p.peerId : p) !== peerId).length : 0;
+        if (otherCount === 0) {
+            addLog(`Episode change ("${newTitle}") — alone in room, playing through without a lobby.`, 'info');
+            sendResponse({ status: 'solo_no_lobby' });
+            return;
+        }
+
         // If lobby already exists for this title, just mark self ready
         if (episodeLobby && sameEpisode(episodeLobby.expectedTitle, newTitle)) {
             if (!episodeLobby.readyPeers.includes(peerId)) {
diff --git a/extension/content.js b/extension/content.js
index aa6458f..380ce54 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -538,6 +538,14 @@
             return true;
         }
 
+        // Background asks for an immediate state push (e.g. the first peer just
+        // joined while we were solo) so the newcomer syncs without waiting.
+        if (message.type === 'REQUEST_HEARTBEAT') {
+            sendHeartbeat();
+            sendResponse({ ok: true });
+            return true;
+        }
+
         if (message.type === 'SERVER_COMMAND') {
             const { action, payload } = message;
             let actionCompleted = false;

From aa84b63c77e0d917ed4b6c4ddb79adb2ffa4c70a Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Tue, 23 Jun 2026 17:27:51 +0200
Subject: [PATCH 027/151] docs: add v2.4.5 entry to CHANGELOG.md

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/CHANGELOG.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index bea971b..8aa6869 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ---
 
+## [v2.4.5] — 2026-06-23
+
+### Fixed
+- **Room and settings are no longer stored in `chrome.storage.sync`** — Room ID, password, and username were being resurrected from synced storage on a fresh install (sync survives an uninstall in the user's Google account), which made the extension silently auto-connect to a dead room and appear permanently connected. `getSettings()` and all settings reads are now local-only, and legacy keys are actively purged from sync on install/update/startup. Only `onboardingComplete` and `dismissedHints` remain in sync.
+- **No server traffic while alone in a room** — When you are the only peer, heartbeats, force-sync, and episode auto-sync are now fully suppressed (previously the keepAlive heartbeat, force-sync, and episode lobby were still broadcast to an empty room). The solo state is re-evaluated live on every event — never cached — so the instant another peer joins, syncing resumes immediately, including an instant state push so the newcomer sees your current position without waiting for the next heartbeat.
+
 ## [v2.4.4] — 2026-06-23
 
 ### Changed

From d847389eef3f38dc6cf103fbb99792e52d02dd8b Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Tue, 23 Jun 2026 15:40:16 +0000
Subject: [PATCH 028/151] chore(release): update versions to v2.4.5 [skip ci]

---
 README.md                    |  4 ++--
 extension/manifest.base.json |  2 +-
 package.json                 |  2 +-
 shared/constants.js          |  2 +-
 website/sitemap.xml          | 34 +++++++++++++++++-----------------
 website/template.html        |  2 +-
 website/version.json         |  4 ++--
 7 files changed, 25 insertions(+), 25 deletions(-)

diff --git a/README.md b/README.md
index 2d8727b..50e0ac7 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml"><img src="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg" alt="Release Status"></a>
-  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.4-blue?logo=github" alt="GitHub release"></a>
+  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.5-blue?logo=github" alt="GitHub release"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue" alt="License"></a>
   <a href="https://addons.mozilla.org/de/firefox/addon/koalasync/"><img src="https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser&logoColor=white" alt="Firefox Add-on"></a>
   <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white" alt="Chrome Extension"></a>
@@ -14,7 +14,7 @@
 
 <p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
 
-<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.4 Release!</b> — See what's changed</a></p>
+<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.5 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
diff --git a/extension/manifest.base.json b/extension/manifest.base.json
index 4cb398b..cca35a4 100644
--- a/extension/manifest.base.json
+++ b/extension/manifest.base.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "en",
   "name": "KoalaSync",
-  "version": "2.4.4",
+  "version": "2.4.5",
   "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
diff --git a/package.json b/package.json
index bb31367..7c047b8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "2.4.4",
+  "version": "2.4.5",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "type": "module",
diff --git a/shared/constants.js b/shared/constants.js
index 23d1b2f..7e60f7d 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -7,7 +7,7 @@
  */
 
 export const PROTOCOL_VERSION = "1.0.0";
-export const APP_VERSION = "2.4.4";
+export const APP_VERSION = "2.4.5";
 
 export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
diff --git a/website/sitemap.xml b/website/sitemap.xml
index b457687..86f2d0f 100644
--- a/website/sitemap.xml
+++ b/website/sitemap.xml
@@ -3,31 +3,31 @@
         xmlns:xhtml="http://www.w3.org/1999/xhtml">
   <url>
     <loc>https://sync.koalastuff.net/imprint</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/privacy</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/impressum</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/datenschutz</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>1.0</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -47,7 +47,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -67,7 +67,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -87,7 +87,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -107,7 +107,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -127,7 +127,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -147,7 +147,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -167,7 +167,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -187,7 +187,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -207,7 +207,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -227,7 +227,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -247,7 +247,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -267,7 +267,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/</loc>
-    <lastmod>2026-06-22</lastmod>
+    <lastmod>2026-06-23</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
diff --git a/website/template.html b/website/template.html
index 5d2325a..0c1bc12 100644
--- a/website/template.html
+++ b/website/template.html
@@ -106,7 +106,7 @@
         "priceCurrency": "EUR"
       },
       "description": "{{SCHEMA_APP_DESC}}",
-      "softwareVersion": "2.4.4",
+      "softwareVersion": "2.4.5",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",
       "image": "https://sync.koalastuff.net/assets/NewLogoIcon.webp",
diff --git a/website/version.json b/website/version.json
index b40ffd1..aad260b 100644
--- a/website/version.json
+++ b/website/version.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.4.4",
-  "date": "2026-06-22T22:46:03Z"
+  "version": "2.4.5",
+  "date": "2026-06-23T15:40:16Z"
 }

From 6276ee134c6db8d815087fa8f119b1089bc6802e Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Tue, 23 Jun 2026 18:36:05 +0200
Subject: [PATCH 029/151] fix(ui): Correct false idle state on connection
 errors

Bump version to 2.4.6
---
 README.md                    |  4 ++--
 docs/CHANGELOG.md            |  2 +-
 extension/background.js      |  8 ++++++++
 extension/locales/de.json    |  2 ++
 extension/locales/en.json    |  2 ++
 extension/locales/es.json    |  2 ++
 extension/locales/fr.json    |  2 ++
 extension/locales/it.json    |  2 ++
 extension/locales/ja.json    |  2 ++
 extension/locales/ko.json    |  2 ++
 extension/locales/nl.json    |  2 ++
 extension/locales/pl.json    |  2 ++
 extension/locales/pt-BR.json |  2 ++
 extension/locales/pt.json    |  2 ++
 extension/locales/ru.json    |  2 ++
 extension/locales/tr.json    |  2 ++
 extension/locales/uk.json    |  2 ++
 extension/locales/zh.json    |  2 ++
 extension/manifest.base.json |  2 +-
 extension/popup.html         |  5 ++++-
 extension/popup.js           | 28 ++++++++++++++++++++++++----
 package.json                 |  2 +-
 shared/constants.js          |  2 +-
 website/template.html        |  2 +-
 24 files changed, 73 insertions(+), 12 deletions(-)

diff --git a/README.md b/README.md
index 50e0ac7..b977db7 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml"><img src="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg" alt="Release Status"></a>
-  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.5-blue?logo=github" alt="GitHub release"></a>
+  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.6-blue?logo=github" alt="GitHub release"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue" alt="License"></a>
   <a href="https://addons.mozilla.org/de/firefox/addon/koalasync/"><img src="https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser&logoColor=white" alt="Firefox Add-on"></a>
   <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white" alt="Chrome Extension"></a>
@@ -14,7 +14,7 @@
 
 <p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
 
-<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.5 Release!</b> — See what's changed</a></p>
+<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.6 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 8aa6869..259e29c 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -4,7 +4,7 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ---
 
-## [v2.4.5] — 2026-06-23
+## [v2.4.6] — 2026-06-23
 
 ### Fixed
 - **Room and settings are no longer stored in `chrome.storage.sync`** — Room ID, password, and username were being resurrected from synced storage on a fresh install (sync survives an uninstall in the user's Google account), which made the extension silently auto-connect to a dead room and appear permanently connected. `getSettings()` and all settings reads are now local-only, and legacy keys are actively purged from sync on install/update/startup. Only `onboardingComplete` and `dismissedHints` remain in sync.
diff --git a/extension/background.js b/extension/background.js
index 772d7f3..04b78e4 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -639,6 +639,12 @@ async function connect() {
 
 
 function broadcastConnectionStatus(status) {
+    // No room and no intent to connect → this isn't a failure, it's the normal
+    // resting state. Surface a distinct 'idle' status so the UI can say
+    // "ready to connect" instead of a misleading red "Disconnected".
+    if (status === 'disconnected' && !currentRoom && !connectIntent) {
+        status = 'idle';
+    }
     chrome.runtime.sendMessage({ type: 'CONNECTION_STATUS', status }).catch(() => {});
     updateBadgeStatus();
 }
@@ -1574,6 +1580,8 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         const isConnected = socket && socket.readyState === WebSocket.OPEN && isNamespaceJoined;
         const isReconnecting = !isConnected && reconnectAttempts > 0;
         let status = isConnected ? 'connected' : (isConnecting || (socket && socket.readyState === WebSocket.CONNECTING) ? 'connecting' : (isReconnecting ? 'reconnecting' : 'disconnected'));
+        // Distinguish the normal "not in a room" resting state from a real drop.
+        if (status === 'disconnected' && !currentRoom && !connectIntent) status = 'idle';
         sendResponse({ 
             status, 
             peerId, 
diff --git a/extension/locales/de.json b/extension/locales/de.json
index 5a1c219..10a8a9f 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Verbinde...",
   "STATUS_FAILED": "Fehlgeschlagen",
   "STATUS_DISCONNECTED": "Getrennt",
+  "STATUS_IDLE": "Bereit zum Verbinden",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync ist bereit. Tritt einem Raum bei oder erstelle einen, um die Verbindung herzustellen und die Synchronisierung zu starten.",
   "BTN_STATE_JOINING": "🚀 Trete bei...",
   "BTN_STATE_RECONNECTING": "🔄 Verbinde erneut...",
   "BTN_STATE_PLAYING": "▶ Spiele ab...",
diff --git a/extension/locales/en.json b/extension/locales/en.json
index e69ad8c..789abff 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Connecting...",
   "STATUS_FAILED": "Failed",
   "STATUS_DISCONNECTED": "Disconnected",
+  "STATUS_IDLE": "Ready to connect",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync is ready. Join or create a room to connect and start syncing.",
   "BTN_STATE_JOINING": "🚀 Joining...",
   "BTN_STATE_RECONNECTING": "🔄 Reconnecting...",
   "BTN_STATE_PLAYING": "▶ Playing...",
diff --git a/extension/locales/es.json b/extension/locales/es.json
index 36c0a18..186678e 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Conectando...",
   "STATUS_FAILED": "Error",
   "STATUS_DISCONNECTED": "Desconectado",
+  "STATUS_IDLE": "Listo para conectar",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync está listo. Únete o crea una sala para conectarte y empezar a sincronizar.",
   "BTN_STATE_JOINING": "🚀 Uniéndose...",
   "BTN_STATE_RECONNECTING": "🔄 Reconectando...",
   "BTN_STATE_PLAYING": "▶ Reproduciendo...",
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index 0095d10..27db35b 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Connexion...",
   "STATUS_FAILED": "Échec",
   "STATUS_DISCONNECTED": "Déconnecté",
+  "STATUS_IDLE": "Prêt à se connecter",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync est prêt. Rejoignez ou créez un salon pour vous connecter et commencer la synchronisation.",
   "BTN_STATE_JOINING": "🚀 Connexion...",
   "BTN_STATE_RECONNECTING": "🔄 Reconnexion...",
   "BTN_STATE_PLAYING": "▶ Lecture...",
diff --git a/extension/locales/it.json b/extension/locales/it.json
index 7c7c059..5217462 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Connessione in corso...",
   "STATUS_FAILED": "Errore",
   "STATUS_DISCONNECTED": "Disconnesso",
+  "STATUS_IDLE": "Pronto a connettersi",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync è pronto. Entra o crea una stanza per connetterti e avviare la sincronizzazione.",
   "BTN_STATE_JOINING": "🚀 Entrando...",
   "BTN_STATE_RECONNECTING": "🔄 Riconnessione...",
   "BTN_STATE_PLAYING": "▶ In riproduzione...",
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index 77f3222..afa8ed2 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "接続中...",
   "STATUS_FAILED": "失敗",
   "STATUS_DISCONNECTED": "切断されました",
+  "STATUS_IDLE": "接続準備完了",
+  "STATUS_IDLE_TOOLTIP": "KoalaSyncの準備ができました。ルームに参加するか作成して接続し、同期を開始してください。",
   "BTN_STATE_JOINING": "🚀 参加中...",
   "BTN_STATE_RECONNECTING": "🔄 再接続中...",
   "BTN_STATE_PLAYING": "▶ 再生中...",
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index e3dc411..fd20147 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "연결 중...",
   "STATUS_FAILED": "실패",
   "STATUS_DISCONNECTED": "연결 끊김",
+  "STATUS_IDLE": "연결 준비 완료",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync가 준비되었습니다. 방에 참여하거나 생성하여 연결하고 동기화를 시작하세요.",
   "BTN_STATE_JOINING": "🚀 참여 중...",
   "BTN_STATE_RECONNECTING": "🔄 재연결 중...",
   "BTN_STATE_PLAYING": "▶ 재생 중...",
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index 83c5583..cfef8a6 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Verbinden...",
   "STATUS_FAILED": "Mislukt",
   "STATUS_DISCONNECTED": "Verbinding verbroken",
+  "STATUS_IDLE": "Gereed om te verbinden",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync is gereed. Neem deel aan een kamer of maak er een aan om te verbinden en te synchroniseren.",
   "BTN_STATE_JOINING": "🚀 Deelnemen...",
   "BTN_STATE_RECONNECTING": "🔄 Opnieuw verbinden...",
   "BTN_STATE_PLAYING": "▶ Afspelen...",
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index 53f3ef3..a7fe42c 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Łączenie...",
   "STATUS_FAILED": "Nieudane",
   "STATUS_DISCONNECTED": "Rozłączono",
+  "STATUS_IDLE": "Gotowy do połączenia",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync jest gotowy. Dołącz do pokoju lub utwórz go, aby się połączyć i rozpocząć synchronizację.",
   "BTN_STATE_JOINING": "🚀 Dołączanie...",
   "BTN_STATE_RECONNECTING": "🔄 Ponowne łączenie...",
   "BTN_STATE_PLAYING": "▶ Odtwarzanie...",
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index 64b38eb..9a9c608 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Conectando...",
   "STATUS_FAILED": "Falhou",
   "STATUS_DISCONNECTED": "Desconectado",
+  "STATUS_IDLE": "Pronto para conectar",
+  "STATUS_IDLE_TOOLTIP": "O KoalaSync está pronto. Entre ou crie uma sala para conectar e começar a sincronizar.",
   "BTN_STATE_JOINING": "🚀 Entrando...",
   "BTN_STATE_RECONNECTING": "🔄 Reconectando...",
   "BTN_STATE_PLAYING": "▶ Reproduzindo...",
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index e9da913..f5ab295 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "A ligar...",
   "STATUS_FAILED": "Falhou",
   "STATUS_DISCONNECTED": "Desligado",
+  "STATUS_IDLE": "Pronto para ligar",
+  "STATUS_IDLE_TOOLTIP": "O KoalaSync está pronto. Entre ou crie uma sala para ligar e iniciar a sincronização.",
   "BTN_STATE_JOINING": "🚀 A entrar...",
   "BTN_STATE_RECONNECTING": "🔄 A voltar a ligar...",
   "BTN_STATE_PLAYING": "▶ A reproduzir...",
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index 0e9abfb..f21e738 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Подключение...",
   "STATUS_FAILED": "Ошибка",
   "STATUS_DISCONNECTED": "Отключено",
+  "STATUS_IDLE": "Готов к подключению",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync готов. Присоединитесь к комнате или создайте её, чтобы подключиться и начать синхронизацию.",
   "BTN_STATE_JOINING": "🚀 Вход...",
   "BTN_STATE_RECONNECTING": "🔄 Переподключение...",
   "BTN_STATE_PLAYING": "▶ Запуск...",
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index fd7e4eb..43dd76a 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Bağlanılıyor...",
   "STATUS_FAILED": "Başarısız",
   "STATUS_DISCONNECTED": "Bağlantı Kesildi",
+  "STATUS_IDLE": "Bağlanmaya hazır",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync hazır. Bağlanmak ve senkronizasyonu başlatmak için bir odaya katılın veya oluşturun.",
   "BTN_STATE_JOINING": "🚀 Katılınıyor...",
   "BTN_STATE_RECONNECTING": "🔄 Yeniden bağlanılıyor...",
   "BTN_STATE_PLAYING": "▶ Oynatılıyor...",
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
index ddc3a8d..9ab3c28 100644
--- a/extension/locales/uk.json
+++ b/extension/locales/uk.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "Підключення...",
   "STATUS_FAILED": "Не вдалося",
   "STATUS_DISCONNECTED": "Відключено",
+  "STATUS_IDLE": "Готовий до підключення",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync готовий. Приєднайтеся до кімнати або створіть її, щоб підключитися та почати синхронізацію.",
   "BTN_STATE_JOINING": "🚀 Приєднуюсь...",
   "BTN_STATE_RECONNECTING": "🔄 Повторне підключення...",
   "BTN_STATE_PLAYING": "▶ Грає...",
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
index 40ab7d4..f414d05 100644
--- a/extension/locales/zh.json
+++ b/extension/locales/zh.json
@@ -143,6 +143,8 @@
   "STATUS_CONNECTING": "正在连接...",
   "STATUS_FAILED": "失败的",
   "STATUS_DISCONNECTED": "已断开连接",
+  "STATUS_IDLE": "已准备好连接",
+  "STATUS_IDLE_TOOLTIP": "KoalaSync 已准备就绪。加入或创建房间以连接并开始同步。",
   "BTN_STATE_JOINING": "🚀 正在加入...",
   "BTN_STATE_RECONNECTING": "🔄 正在重新连接...",
   "BTN_STATE_PLAYING": "▶ 播放中...",
diff --git a/extension/manifest.base.json b/extension/manifest.base.json
index cca35a4..07a3c6f 100644
--- a/extension/manifest.base.json
+++ b/extension/manifest.base.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "en",
   "name": "KoalaSync",
-  "version": "2.4.5",
+  "version": "2.4.6",
   "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
diff --git a/extension/popup.html b/extension/popup.html
index 47411da..bb4fb4c 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -613,7 +613,10 @@
         <label title="Current WebSocket connection state" data-i18n="LABEL_CONN_STATUS" data-i18n-title="LABEL_CONN_STATUS_TOOLTIP">Connection Status</label>
         <div id="connStatus" class="info-card" style="display:flex; align-items:center; gap: 10px;">
             <span id="connDot" class="status-dot status-offline"></span>
-            <span id="connText" style="flex:1;">Disconnected</span>
+            <span style="flex:1; display:flex; align-items:center; gap:6px; min-width:0;">
+                <span id="connText">Disconnected</span>
+                <span id="connInfo" data-i18n-title="STATUS_IDLE_TOOLTIP" title="KoalaSync is ready. Join or create a room to connect and start syncing." style="display:none; cursor:help; flex:none; width:15px; height:15px; line-height:14px; text-align:center; border-radius:50%; border:1px solid var(--text-muted); color:var(--text-muted); font-size:10px; font-weight:700; font-style:normal;">i</span>
+            </span>
             <span id="connPing" style="font-size:11px; font-family:monospace; font-weight:600; opacity:0.8;"></span>
             <button id="retryBtn" class="secondary" style="display:none; width: auto; padding: 4px 8px; font-size: 10px; margin: 0;" title="Attempt to reconnect to the server" data-i18n="BTN_RETRY" data-i18n-title="BTN_RETRY_TOOLTIP">RETRY</button>
             <button id="copyLogs" class="btn secondary" style="width: auto; padding: 4px 10px; font-size: 11px; margin: 0;" title="Copy logs to clipboard for sharing" data-i18n="BTN_COPY_LOGS" data-i18n-title="BTN_COPY_LOGS_TOOLTIP">Copy Logs</button>
diff --git a/extension/popup.js b/extension/popup.js
index 5f5467f..3d94f60 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -16,6 +16,7 @@ const elements = {
     clearLogs: document.getElementById('clearLogs'),
     connDot: document.getElementById('connDot'),
     connText: document.getElementById('connText'),
+    connInfo: document.getElementById('connInfo'),
     connPing: document.getElementById('connPing'),
     serverUrl: document.getElementById('serverUrl'),
     serverOfficial: document.getElementById('serverOfficial'),
@@ -245,9 +246,9 @@ async function init() {
             lastKnownPeers = res.peers || [];
             if (res.lastActionState) updateLastActionUI(res.lastActionState, res.peers);
 
-            // If user has a room configured but background is not connected,
+            // If user has a room configured but background is not connected (disconnected or idle),
             // trigger connection now — the popup opening is explicit user intent.
-            if (res.status === 'disconnected' && localData.roomId) {
+            if ((res.status === 'disconnected' || res.status === 'idle') && localData.roomId) {
                 chrome.runtime.sendMessage({ type: 'CONNECT' }).catch(() => {});
                 applyConnectionStatus('connecting');
             }
@@ -818,19 +819,33 @@ async function populateTabs(providedPeers = null, providedTargetTabId = null) {
 }
 
 function applyConnectionStatus(status) {
+    // Coerce 'idle' to 'disconnected' if a room is actively configured.
+    // An 'idle' status with a configured room indicates the background
+    // worker dropped connection intent due to a server error.
+    if (status === 'idle' && elements.sectionActive && elements.sectionActive.style.display !== 'none') {
+        status = 'disconnected';
+    }
+
     const connected = status === 'connected';
     const connecting = status === 'connecting';
     const reconnecting = status === 'reconnecting';
+    // 'idle' = not in a room and not trying to connect. This is the normal
+    // resting state (lazy connect), NOT an error — surface it neutrally.
+    const idle = status === 'idle';
 
     if (elements.connDot) {
         elements.connDot.className = 'status-dot ' + (connected ? 'status-online' : ((connecting || reconnecting) ? 'status-online' : 'status-offline'));
-        
+
         if (reconnecting) {
             elements.connDot.style.background = '#f59e0b';
             elements.connDot.style.boxShadow = '0 0 8px #f59e0b';
         } else if (connecting) {
             elements.connDot.style.background = '#fbbf24';
             elements.connDot.style.boxShadow = '0 0 8px #fbbf24';
+        } else if (idle) {
+            // Neutral grey — ready, not failed.
+            elements.connDot.style.background = '#9ca3af';
+            elements.connDot.style.boxShadow = 'none';
         } else if (!connected) {
             elements.connDot.style.background = '#ef4444';
             elements.connDot.style.boxShadow = 'none';
@@ -841,7 +856,12 @@ function applyConnectionStatus(status) {
     }
 
     if (elements.connText) {
-        elements.connText.textContent = connected ? getMessage('STATUS_CONNECTED') : (reconnecting ? getMessage('STATUS_RECONNECTING') : (connecting ? getMessage('STATUS_CONNECTING') : getMessage('STATUS_DISCONNECTED')));
+        elements.connText.textContent = connected ? getMessage('STATUS_CONNECTED') : (reconnecting ? getMessage('STATUS_RECONNECTING') : (connecting ? getMessage('STATUS_CONNECTING') : (idle ? getMessage('STATUS_IDLE') : getMessage('STATUS_DISCONNECTED'))));
+    }
+
+    // Show the info "i" + tooltip only in the idle state.
+    if (elements.connInfo) {
+        elements.connInfo.style.display = idle ? '' : 'none';
     }
     if (!connected) {
         updatePingDisplay(null);
diff --git a/package.json b/package.json
index 7c047b8..b569683 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "2.4.5",
+  "version": "2.4.6",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "type": "module",
diff --git a/shared/constants.js b/shared/constants.js
index 7e60f7d..40ddbce 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -7,7 +7,7 @@
  */
 
 export const PROTOCOL_VERSION = "1.0.0";
-export const APP_VERSION = "2.4.5";
+export const APP_VERSION = "2.4.6";
 
 export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
diff --git a/website/template.html b/website/template.html
index 0c1bc12..069e921 100644
--- a/website/template.html
+++ b/website/template.html
@@ -106,7 +106,7 @@
         "priceCurrency": "EUR"
       },
       "description": "{{SCHEMA_APP_DESC}}",
-      "softwareVersion": "2.4.5",
+      "softwareVersion": "2.4.6",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",
       "image": "https://sync.koalastuff.net/assets/NewLogoIcon.webp",

From 24cac526740cc6b395e63e5073e83f777014db8e Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Tue, 23 Jun 2026 16:36:23 +0000
Subject: [PATCH 030/151] chore(release): update versions to v2.4.6 [skip ci]

---
 website/version.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/website/version.json b/website/version.json
index aad260b..1ea3f8d 100644
--- a/website/version.json
+++ b/website/version.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.4.5",
-  "date": "2026-06-23T15:40:16Z"
+  "version": "2.4.6",
+  "date": "2026-06-23T16:36:23Z"
 }

From 06b5ffbd0b8a2682d796ad5de5c3c04c09d54ca7 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 25 Jun 2026 00:12:04 +0200
Subject: [PATCH 031/151] feat(alternatives): add Teleparty & Screen Sharing
 comparison pages with i18n

- Add article-style comparison pages for Teleparty and Screen Sharing
- Replace comparison tables with honest prose sections
- Add 15-language hreflang alternates and sitemap entries
- Add English locale fallback for untranslated languages
- Replace placeholder Draft copy with real English and German text
- Remove old Draft locale keys from all 13 non-EN/DE locales
- Rebuild outputs with zero TODO/Draft/noindex issues
---
 website/alternatives/index.html          | 189 +++++++++++++++++++++
 website/alternatives/screen-sharing.html | 199 +++++++++++++++++++++++
 website/alternatives/teleparty.html      | 199 +++++++++++++++++++++++
 website/app.js                           |  31 ++++
 website/build.cjs                        |  95 +++++++++--
 website/datenschutz-de.html              |   1 +
 website/impressum-de.html                |   1 +
 website/imprint.html                     |   1 +
 website/join.html                        |   1 +
 website/locales/de.json                  |  29 +++-
 website/locales/en.json                  |  29 +++-
 website/locales/es.json                  |   3 +-
 website/locales/fr.json                  |   3 +-
 website/locales/it.json                  |   3 +-
 website/locales/ja.json                  |   3 +-
 website/locales/ko.json                  |   3 +-
 website/locales/nl.json                  |   3 +-
 website/locales/pl.json                  |   3 +-
 website/locales/pt-BR.json               |   3 +-
 website/locales/pt.json                  |   3 +-
 website/locales/ru.json                  |   3 +-
 website/locales/tr.json                  |   3 +-
 website/locales/uk.json                  |   3 +-
 website/locales/zh.json                  |   3 +-
 website/privacy.html                     |   1 +
 website/sitemap.xml                      | 132 +++++++++++++++
 website/style.css                        |  42 ++++-
 website/template.html                    |  29 ++--
 28 files changed, 972 insertions(+), 46 deletions(-)
 create mode 100644 website/alternatives/index.html
 create mode 100644 website/alternatives/screen-sharing.html
 create mode 100644 website/alternatives/teleparty.html

diff --git a/website/alternatives/index.html b/website/alternatives/index.html
new file mode 100644
index 0000000..3b7b2da
--- /dev/null
+++ b/website/alternatives/index.html
@@ -0,0 +1,189 @@
+<!DOCTYPE html>
+<html lang="{{LANG_CODE}}" class="lang-{{LANG_CODE}}">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>{{ALT_INDEX_TITLE}}</title>
+    <link rel="preload" href="{{ASSET_PATH}}style.min.css" as="style">
+    <link rel="stylesheet" href="{{ASSET_PATH}}style.min.css">
+    <link rel="icon" type="image/webp" href="{{ASSET_PATH}}assets/NewLogoIcon_64.webp">
+    <link rel="canonical" href="https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives">
+    
+    <link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives">
+    <link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives">
+    <link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives">
+    <link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives">
+    <link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives">
+    <link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives">
+    <link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives">
+    <link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives">
+    <link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives">
+    <link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives">
+    <link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives">
+    <link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives">
+    <link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives">
+    <link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives">
+    <link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives">
+    <link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives">
+    
+    <meta name="description" content="{{ALT_INDEX_META_DESC}}">
+    <meta name="robots" content="index, follow">
+
+    <!-- Open Graph / Facebook -->
+    <meta property="og:type" content="website">
+    <meta property="og:url" content="https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives">
+    <meta property="og:title" content="{{ALT_INDEX_TITLE}}">
+    <meta property="og:description" content="{{ALT_INDEX_META_DESC}}">
+    <meta property="og:image" content="https://sync.koalastuff.net/assets/KoalaSearching.webp">
+
+    <!-- Twitter / X -->
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:title" content="{{ALT_INDEX_TITLE}}">
+    <meta name="twitter:description" content="{{ALT_INDEX_META_DESC}}">
+    <meta name="twitter:image" content="https://sync.koalastuff.net/assets/KoalaSearching.webp">
+
+    <!-- Structured Data (Schema.org) for Breadcrumbs -->
+    <script type="application/ld+json">
+    {
+      "@context": "https://schema.org",
+      "@type": "BreadcrumbList",
+      "itemListElement": [
+        {
+          "@type": "ListItem",
+          "position": 1,
+          "name": "Home",
+          "item": "https://sync.koalastuff.net/{{LANG_PREFIX}}"
+        },
+        {
+          "@type": "ListItem",
+          "position": 2,
+          "name": "Alternatives",
+          "item": "https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives"
+        }
+      ]
+    }
+    </script>
+
+    <!-- Mobile Browser Theme Styling -->
+    <meta name="theme-color" content="#0f172a">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
+
+    <script src="{{ASSET_PATH}}lang-init.min.js"></script>
+</head>
+<body>
+    <div class="bg-blobs">
+        <div class="blob blob-1"></div>
+        <div class="blob blob-2"></div>
+        <div class="blob blob-3"></div>
+    </div>
+
+    <nav>
+        <div class="container nav-content">
+            <a href="{{ASSET_PATH}}" class="logo-area" style="text-decoration: none;">
+                <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo" width="40" height="40">
+                <span>KoalaSync</span>
+            </a>
+            <div class="nav-links">
+                <a href="{{ASSET_PATH}}" style="display: inline-flex; align-items: center; gap: 6px;">
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" style="width: 16px; height: 16px; display: block;"><path d="m3 9 9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path><polyline points="9 22 9 12 15 12 15 22"></polyline></svg>
+                    <span>Home</span>
+                </a>
+                <a href="https://github.com/Shik3i/KoalaSync" target="_blank" rel="noopener" style="display: inline-flex; align-items: center; gap: 6px;">
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="16" height="16" aria-hidden="true" style="display: block;"><path d="M12 0c-6.626 0-12 5.373-12 12 0 5.302 3.438 9.8 8.207 11.387.599.111.793-.261.793-.577v-2.234c-3.338.726-4.033-1.416-4.033-1.416-.546-1.387-1.333-1.756-1.333-1.756-1.089-.745.083-.729.083-.729 1.205.084 1.839 1.237 1.839 1.237 1.07 1.834 2.807 1.304 3.492.997.107-.775.418-1.305.762-1.604-2.665-.305-5.467-1.334-5.467-5.931 0-1.311.469-2.381 1.236-3.221-.124-.303-.535-1.524.117-3.176 0 0 1.008-.322 3.301 1.23.957-.266 1.983-.399 3.003-.404 1.02.005 2.047.138 3.006.404 2.291-1.552 3.297-1.23 3.297-1.23.653 1.653.242 2.874.118 3.176.77.84 1.235 1.911 1.235 3.221 0 4.609-2.807 5.624-5.479 5.921.43.372.823 1.102.823 2.222v3.293c0 .319.192.694.801.576 4.765-1.589 8.199-6.086 8.199-11.386 0-6.627-5.373-12-12-12z"/></svg>
+                    GitHub
+                </a>
+            </div>
+            <div class="nav-right">
+                <div class="lang-select-container">
+                    <select class="lang-dropdown" aria-label="Select Language">
+                        <option value="en">🇬🇧 English</option>
+                        <option value="de">🇩🇪 Deutsch</option>
+                        <option value="fr">🇫🇷 Français</option>
+                        <option value="es">🇪🇸 Español</option>
+                        <option value="pt-BR">🇧🇷 Português (Brasil)</option>
+                        <option value="ru">🇷🇺 Русский</option>
+                        <option value="it">🇮🇹 Italiano</option>
+                        <option value="pl">🇵🇱 Polski</option>
+                        <option value="tr">🇹🇷 Türkçe</option>
+                        <option value="nl">🇳🇱 Nederlands</option>
+                        <option value="ja">🇯🇵 日本語</option>
+                        <option value="ko">🇰🇷 한국어</option>
+                        <option value="pt">🇵🇹 Português (Portugal)</option>
+                    </select>
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" class="chevron-icon"><polyline points="6 9 12 15 18 9"/></svg>
+                </div>
+                <button class="hamburger" aria-label="Menu" aria-expanded="false">☰</button>
+            </div>
+        </div>
+    </nav>
+
+    <main class="legal-content">
+        <div class="legal-card" data-reveal style="padding: 2.5rem 2rem;">
+            <div style="display: flex; justify-content: center;">
+                <img src="{{ASSET_PATH}}assets/KoalaSearching.webp" alt="Koala using magnifying glass" class="legal-mascot" width="180" height="180">
+            </div>
+            
+            <h1>
+                <span lang="en">Guides &amp; Comparisons</span>
+                <span lang="de">Vergleiche &amp; Anleitungen</span>
+            </h1>
+            <p style="text-align: center; font-size: 0.95rem; line-height: 1.6; max-width: 600px; margin: 0 auto 2rem auto; color: var(--text-muted);">
+                <span lang="en">How does KoalaSync stack up against other watch party tools and streaming solutions? Read our honest, technical comparisons to find the best fit for your remote movie nights.</span>
+                <span lang="de">Wie schlägt sich KoalaSync im Vergleich zu anderen Watch-Party-Tools und Streaming-Lösungen? Lies unsere ehrlichen, technischen Vergleiche, um die passende Lösung für deine Filmabende zu finden.</span>
+            </p>
+
+            <!-- Cards Grid Layout -->
+            <div class="guides-grid" style="display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 2rem; margin-bottom: 2rem;">
+                <!-- Teleparty Card -->
+                <a href="{{ASSET_PATH}}{{LANG_PREFIX}}alternatives/teleparty" class="guide-card" style="text-decoration: none; background: rgba(255, 255, 255, 0.03); border: 1px solid var(--glass-border); border-radius: 12px; padding: 1.5rem; display: flex; flex-direction: column; justify-content: space-between;">
+                    <div>
+                        <h3 style="margin-top: 0; margin-bottom: 0.75rem; color: #fff; font-size: 1.25rem;">{{ALT_TELEPARTY_TITLE}}</h3>
+                        <p style="font-size: 0.9rem; line-height: 1.5; color: var(--text-muted); margin-bottom: 1.5rem;">{{ALT_TELEPARTY_META_DESC}}</p>
+                    </div>
+                    <div class="btn btn-primary" style="align-self: flex-start; padding: 0.5rem 1rem; font-size: 0.85rem; border-radius: 6px;">
+                        <span lang="en">Read Comparison &rarr;</span>
+                        <span lang="de">Vergleich lesen &rarr;</span>
+                    </div>
+                </a>
+
+                <!-- Screen Sharing Card -->
+                <a href="{{ASSET_PATH}}{{LANG_PREFIX}}alternatives/screen-sharing" class="guide-card" style="text-decoration: none; background: rgba(255, 255, 255, 0.03); border: 1px solid var(--glass-border); border-radius: 12px; padding: 1.5rem; display: flex; flex-direction: column; justify-content: space-between;">
+                    <div>
+                        <h3 style="margin-top: 0; margin-bottom: 0.75rem; color: #fff; font-size: 1.25rem;">{{ALT_SCREEN_TITLE}}</h3>
+                        <p style="font-size: 0.9rem; line-height: 1.5; color: var(--text-muted); margin-bottom: 1.5rem;">{{ALT_SCREEN_META_DESC}}</p>
+                    </div>
+                    <div class="btn btn-primary" style="align-self: flex-start; padding: 0.5rem 1rem; font-size: 0.85rem; border-radius: 6px;">
+                        <span lang="en">Read Comparison &rarr;</span>
+                        <span lang="de">Vergleich lesen &rarr;</span>
+                    </div>
+                </a>
+            </div>
+
+            <!-- CTA block -->
+            <div style="display: flex; flex-direction: column; align-items: center; justify-content: center; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--glass-border);">
+                <a href="{{ASSET_PATH}}" class="btn btn-primary" style="margin-bottom: 1.5rem;">{{ALT_TRY_KOALASYNC}}</a>
+            </div>
+
+        </div>
+    </main>
+
+    <footer>
+        <div class="container">
+            <p>&copy; 2026 KoalaSync. {{FOOTER_MIT}}</p>
+            <p style="font-size: 0.8rem; margin-top: 0.5rem;">{{FOOTER_RAM}}</p>
+            <div style="margin-top: 1.5rem; font-size: 0.8rem; display: flex; justify-content: center; align-items: center; gap: 1.5rem; flex-wrap: wrap;">
+                <a href="{{ASSET_PATH}}{{FOOTER_LEGAL_LINK}}">{{FOOTER_LEGAL}}</a>
+                <a href="{{ASSET_PATH}}{{FOOTER_PRIVACY_LINK}}">{{FOOTER_PRIVACY}}</a>
+                <a href="{{ASSET_PATH}}{{LANG_PREFIX}}alternatives"><span><span lang="en">Guides & comparisons</span><span lang="de">Vergleiche & Anleitungen</span></span></a>
+                <a href="https://mastodon.social/@koalastuff" rel="me noopener" target="_blank" style="display: inline-flex; align-items: center; gap: 4px;">
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="14" height="14" aria-hidden="true" style="display: block;"><path d="M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z"/></svg>
+                    Mastodon
+                </a>
+            </div>
+        </div>
+    </footer>
+
+    <script src="{{ASSET_PATH}}app.min.js"></script>
+</body>
+</html>
diff --git a/website/alternatives/screen-sharing.html b/website/alternatives/screen-sharing.html
new file mode 100644
index 0000000..5ded34c
--- /dev/null
+++ b/website/alternatives/screen-sharing.html
@@ -0,0 +1,199 @@
+<!DOCTYPE html>
+<html lang="{{LANG_CODE}}" class="lang-{{LANG_CODE}}">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>{{ALT_SCREEN_TITLE}}</title>
+    <link rel="preload" href="{{ASSET_PATH}}style.min.css" as="style">
+    <link rel="stylesheet" href="{{ASSET_PATH}}style.min.css">
+    <link rel="icon" type="image/webp" href="{{ASSET_PATH}}assets/NewLogoIcon_64.webp">
+    <link rel="canonical" href="https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives/screen-sharing">
+    
+    <link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives/screen-sharing">
+    <link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives/screen-sharing">
+    
+    <meta name="description" content="{{ALT_SCREEN_META_DESC}}">
+    <meta name="robots" content="index, follow">
+
+    <!-- Open Graph / Facebook -->
+    <meta property="og:type" content="article">
+    <meta property="og:url" content="https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives/screen-sharing">
+    <meta property="og:title" content="{{ALT_SCREEN_TITLE}}">
+    <meta property="og:description" content="{{ALT_SCREEN_META_DESC}}">
+    <meta property="og:image" content="https://sync.koalastuff.net/assets/PopcornFriends.webp">
+
+    <!-- Twitter / X -->
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:title" content="{{ALT_SCREEN_TITLE}}">
+    <meta name="twitter:description" content="{{ALT_SCREEN_META_DESC}}">
+    <meta name="twitter:image" content="https://sync.koalastuff.net/assets/PopcornFriends.webp">
+
+    <!-- Structured Data (Schema.org) for Breadcrumbs -->
+    <script type="application/ld+json">
+    {
+      "@context": "https://schema.org",
+      "@type": "BreadcrumbList",
+      "itemListElement": [
+        {
+          "@type": "ListItem",
+          "position": 1,
+          "name": "Home",
+          "item": "https://sync.koalastuff.net/{{LANG_PREFIX}}"
+        },
+        {
+          "@type": "ListItem",
+          "position": 2,
+          "name": "Alternatives",
+          "item": "https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives"
+        },
+        {
+          "@type": "ListItem",
+          "position": 3,
+          "name": "KoalaSync vs Screen Sharing",
+          "item": "https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives/screen-sharing"
+        }
+      ]
+    }
+    </script>
+
+    <!-- Mobile Browser Theme Styling -->
+    <meta name="theme-color" content="#0f172a">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
+
+    <script src="{{ASSET_PATH}}lang-init.min.js"></script>
+</head>
+<body>
+    <div class="bg-blobs">
+        <div class="blob blob-1"></div>
+        <div class="blob blob-2"></div>
+        <div class="blob blob-3"></div>
+    </div>
+
+    <nav>
+        <div class="container nav-content">
+            <a href="{{ASSET_PATH}}" class="logo-area" style="text-decoration: none;">
+                <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo" width="40" height="40">
+                <span>KoalaSync</span>
+            </a>
+            <div class="nav-links">
+                <a href="{{ASSET_PATH}}" style="display: inline-flex; align-items: center; gap: 6px;">
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" style="width: 16px; height: 16px; display: block;"><path d="m3 9 9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path><polyline points="9 22 9 12 15 12 15 22"></polyline></svg>
+                    <span>Home</span>
+                </a>
+                <a href="https://github.com/Shik3i/KoalaSync" target="_blank" rel="noopener" style="display: inline-flex; align-items: center; gap: 6px;">
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="16" height="16" aria-hidden="true" style="display: block;"><path d="M12 0c-6.626 0-12 5.373-12 12 0 5.302 3.438 9.8 8.207 11.387.599.111.793-.261.793-.577v-2.234c-3.338.726-4.033-1.416-4.033-1.416-.546-1.387-1.333-1.756-1.333-1.756-1.089-.745.083-.729.083-.729 1.205.084 1.839 1.237 1.839 1.237 1.07 1.834 2.807 1.304 3.492.997.107-.775.418-1.305.762-1.604-2.665-.305-5.467-1.334-5.467-5.931 0-1.311.469-2.381 1.236-3.221-.124-.303-.535-1.524.117-3.176 0 0 1.008-.322 3.301 1.23.957-.266 1.983-.399 3.003-.404 1.02.005 2.047.138 3.006.404 2.291-1.552 3.297-1.23 3.297-1.23.653 1.653.242 2.874.118 3.176.77.84 1.235 1.911 1.235 3.221 0 4.609-2.807 5.624-5.479 5.921.43.372.823 1.102.823 2.222v3.293c0 .319.192.694.801.576 4.765-1.589 8.199-6.086 8.199-11.386 0-6.627-5.373-12-12-12z"/></svg>
+                    GitHub
+                </a>
+            </div>
+            <div class="nav-right">
+                <div class="lang-select-container">
+                    <select class="lang-dropdown" aria-label="Select Language">
+                        <option value="en">🇬🇧 English</option>
+                        <option value="de">🇩🇪 Deutsch</option>
+                        <option value="fr">🇫🇷 Français</option>
+                        <option value="es">🇪🇸 Español</option>
+                        <option value="pt-BR">🇧🇷 Português (Brasil)</option>
+                        <option value="ru">🇷🇺 Русский</option>
+                        <option value="it">🇮🇹 Italiano</option>
+                        <option value="pl">🇵🇱 Polski</option>
+                        <option value="tr">🇹🇷 Türkçe</option>
+                        <option value="nl">🇳🇱 Nederlands</option>
+                        <option value="ja">🇯🇵 日本語</option>
+                        <option value="ko">🇰🇷 한국어</option>
+                        <option value="pt">🇵🇹 Português (Portugal)</option>
+                    </select>
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" class="chevron-icon"><polyline points="6 9 12 15 18 9"/></svg>
+                </div>
+                <button class="hamburger" aria-label="Menu" aria-expanded="false">☰</button>
+            </div>
+        </div>
+    </nav>
+
+    <main class="legal-content">
+        <div class="legal-card" data-reveal style="padding: 2rem;">
+            <div style="display: flex; justify-content: center;">
+                <img src="{{ASSET_PATH}}assets/PopcornFriends.webp" alt="Koalas watching movie with popcorn" class="legal-mascot" width="180" height="180">
+            </div>
+            
+            <h1>{{ALT_SCREEN_TITLE}}</h1>
+
+            <!-- Intro -->
+            <section>
+                <p><em>{{ALT_SCREEN_INTRO}}</em></p>
+            </section>
+
+            <!-- When screen sharing is enough -->
+            <section>
+                <h2>{{ALT_SCREEN_WHEN_ENOUGH_TITLE}}</h2>
+                <p>{{ALT_SCREEN_WHEN_ENOUGH_BODY}}</p>
+            </section>
+
+            <!-- Where screen sharing gets annoying -->
+            <section>
+                <h2>{{ALT_SCREEN_WHEN_ANNOYING_TITLE}}</h2>
+                <p>{{ALT_SCREEN_WHEN_ANNOYING_BODY}}</p>
+            </section>
+
+            <!-- Why KoalaSync can feel cleaner -->
+            <section>
+                <h2>{{ALT_SCREEN_WHY_CLEANER_TITLE}}</h2>
+                <p>{{ALT_SCREEN_WHY_CLEANER_BODY}}</p>
+            </section>
+
+            <!-- Honest limitations -->
+            <section>
+                <h2>{{ALT_SCREEN_LIMITS_TITLE}}</h2>
+                <p>{{ALT_SCREEN_LIMITS_BODY}}</p>
+            </section>
+
+            <!-- Summary -->
+            <section>
+                <h2>{{ALT_SCREEN_SUMMARY_TITLE}}</h2>
+                <p>{{ALT_SCREEN_SUMMARY_BODY}}</p>
+            </section>
+
+            <!-- CTA block -->
+            <div style="display: flex; flex-direction: column; align-items: center; justify-content: center; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--glass-border);">
+                <a href="{{ASSET_PATH}}" class="btn btn-primary" style="margin-bottom: 1.5rem;">{{ALT_TRY_KOALASYNC}}</a>
+                <p style="font-size: 0.9rem; text-align: center;">
+                    <a href="{{ASSET_PATH}}alternatives/teleparty" style="color: var(--accent); text-decoration: none;">{{ALT_TELEPARTY_TITLE}}</a>
+                </p>
+            </div>
+
+        </div>
+    </main>
+
+    <footer>
+        <div class="container">
+            <p>&copy; 2026 KoalaSync. {{FOOTER_MIT}}</p>
+            <p style="font-size: 0.8rem; margin-top: 0.5rem;">{{FOOTER_RAM}}</p>
+            <div style="margin-top: 1.5rem; font-size: 0.8rem; display: flex; justify-content: center; align-items: center; gap: 1.5rem; flex-wrap: wrap;">
+                <a href="{{ASSET_PATH}}{{FOOTER_LEGAL_LINK}}">{{FOOTER_LEGAL}}</a>
+                <a href="{{ASSET_PATH}}{{FOOTER_PRIVACY_LINK}}">{{FOOTER_PRIVACY}}</a>
+                <a href="{{ASSET_PATH}}{{LANG_PREFIX}}alternatives"><span><span lang="en">Guides & comparisons</span><span lang="de">Vergleiche & Anleitungen</span></span></a>
+                <a href="https://mastodon.social/@koalastuff" rel="me noopener" target="_blank" style="display: inline-flex; align-items: center; gap: 4px;">
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="14" height="14" aria-hidden="true" style="display: block;"><path d="M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z"/></svg>
+                    Mastodon
+                </a>
+            </div>
+        </div>
+    </footer>
+
+    <script src="{{ASSET_PATH}}app.min.js"></script>
+</body>
+</html>
diff --git a/website/alternatives/teleparty.html b/website/alternatives/teleparty.html
new file mode 100644
index 0000000..51ef580
--- /dev/null
+++ b/website/alternatives/teleparty.html
@@ -0,0 +1,199 @@
+<!DOCTYPE html>
+<html lang="{{LANG_CODE}}" class="lang-{{LANG_CODE}}">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>{{ALT_TELEPARTY_TITLE}}</title>
+    <link rel="preload" href="{{ASSET_PATH}}style.min.css" as="style">
+    <link rel="stylesheet" href="{{ASSET_PATH}}style.min.css">
+    <link rel="icon" type="image/webp" href="{{ASSET_PATH}}assets/NewLogoIcon_64.webp">
+    <link rel="canonical" href="https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives/teleparty">
+    
+    <link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty">
+    <link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives/teleparty">
+    <link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives/teleparty">
+    <link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives/teleparty">
+    <link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives/teleparty">
+    <link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives/teleparty">
+    <link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives/teleparty">
+    <link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives/teleparty">
+    <link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives/teleparty">
+    <link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives/teleparty">
+    <link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives/teleparty">
+    <link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives/teleparty">
+    <link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives/teleparty">
+    <link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives/teleparty">
+    <link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives/teleparty">
+    <link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives/teleparty">
+    
+    <meta name="description" content="{{ALT_TELEPARTY_META_DESC}}">
+    <meta name="robots" content="index, follow">
+
+    <!-- Open Graph / Facebook -->
+    <meta property="og:type" content="article">
+    <meta property="og:url" content="https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives/teleparty">
+    <meta property="og:title" content="{{ALT_TELEPARTY_TITLE}}">
+    <meta property="og:description" content="{{ALT_TELEPARTY_META_DESC}}">
+    <meta property="og:image" content="https://sync.koalastuff.net/assets/ProContraKoala.webp">
+
+    <!-- Twitter / X -->
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:title" content="{{ALT_TELEPARTY_TITLE}}">
+    <meta name="twitter:description" content="{{ALT_TELEPARTY_META_DESC}}">
+    <meta name="twitter:image" content="https://sync.koalastuff.net/assets/ProContraKoala.webp">
+
+    <!-- Structured Data (Schema.org) for Breadcrumbs -->
+    <script type="application/ld+json">
+    {
+      "@context": "https://schema.org",
+      "@type": "BreadcrumbList",
+      "itemListElement": [
+        {
+          "@type": "ListItem",
+          "position": 1,
+          "name": "Home",
+          "item": "https://sync.koalastuff.net/{{LANG_PREFIX}}"
+        },
+        {
+          "@type": "ListItem",
+          "position": 2,
+          "name": "Alternatives",
+          "item": "https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives"
+        },
+        {
+          "@type": "ListItem",
+          "position": 3,
+          "name": "KoalaSync vs Teleparty",
+          "item": "https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives/teleparty"
+        }
+      ]
+    }
+    </script>
+
+    <!-- Mobile Browser Theme Styling -->
+    <meta name="theme-color" content="#0f172a">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
+
+    <script src="{{ASSET_PATH}}lang-init.min.js"></script>
+</head>
+<body>
+    <div class="bg-blobs">
+        <div class="blob blob-1"></div>
+        <div class="blob blob-2"></div>
+        <div class="blob blob-3"></div>
+    </div>
+
+    <nav>
+        <div class="container nav-content">
+            <a href="{{ASSET_PATH}}" class="logo-area" style="text-decoration: none;">
+                <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo" width="40" height="40">
+                <span>KoalaSync</span>
+            </a>
+            <div class="nav-links">
+                <a href="{{ASSET_PATH}}" style="display: inline-flex; align-items: center; gap: 6px;">
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" style="width: 16px; height: 16px; display: block;"><path d="m3 9 9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path><polyline points="9 22 9 12 15 12 15 22"></polyline></svg>
+                    <span>Home</span>
+                </a>
+                <a href="https://github.com/Shik3i/KoalaSync" target="_blank" rel="noopener" style="display: inline-flex; align-items: center; gap: 6px;">
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="16" height="16" aria-hidden="true" style="display: block;"><path d="M12 0c-6.626 0-12 5.373-12 12 0 5.302 3.438 9.8 8.207 11.387.599.111.793-.261.793-.577v-2.234c-3.338.726-4.033-1.416-4.033-1.416-.546-1.387-1.333-1.756-1.333-1.756-1.089-.745.083-.729.083-.729 1.205.084 1.839 1.237 1.839 1.237 1.07 1.834 2.807 1.304 3.492.997.107-.775.418-1.305.762-1.604-2.665-.305-5.467-1.334-5.467-5.931 0-1.311.469-2.381 1.236-3.221-.124-.303-.535-1.524.117-3.176 0 0 1.008-.322 3.301 1.23.957-.266 1.983-.399 3.003-.404 1.02.005 2.047.138 3.006.404 2.291-1.552 3.297-1.23 3.297-1.23.653 1.653.242 2.874.118 3.176.77.84 1.235 1.911 1.235 3.221 0 4.609-2.807 5.624-5.479 5.921.43.372.823 1.102.823 2.222v3.293c0 .319.192.694.801.576 4.765-1.589 8.199-6.086 8.199-11.386 0-6.627-5.373-12-12-12z"/></svg>
+                    GitHub
+                </a>
+            </div>
+            <div class="nav-right">
+                <div class="lang-select-container">
+                    <select class="lang-dropdown" aria-label="Select Language">
+                        <option value="en">🇬🇧 English</option>
+                        <option value="de">🇩🇪 Deutsch</option>
+                        <option value="fr">🇫🇷 Français</option>
+                        <option value="es">🇪🇸 Español</option>
+                        <option value="pt-BR">🇧🇷 Português (Brasil)</option>
+                        <option value="ru">🇷🇺 Русский</option>
+                        <option value="it">🇮🇹 Italiano</option>
+                        <option value="pl">🇵🇱 Polski</option>
+                        <option value="tr">🇹🇷 Türkçe</option>
+                        <option value="nl">🇳🇱 Nederlands</option>
+                        <option value="ja">🇯🇵 日本語</option>
+                        <option value="ko">🇰🇷 한국어</option>
+                        <option value="pt">🇵🇹 Português (Portugal)</option>
+                    </select>
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" class="chevron-icon"><polyline points="6 9 12 15 18 9"/></svg>
+                </div>
+                <button class="hamburger" aria-label="Menu" aria-expanded="false">☰</button>
+            </div>
+        </div>
+    </nav>
+
+    <main class="legal-content">
+        <div class="legal-card" data-reveal style="padding: 2rem;">
+            <div style="display: flex; justify-content: center;">
+                <img src="{{ASSET_PATH}}assets/ProContraKoala.webp" alt="Koala weighing pros and cons" class="legal-mascot" width="180" height="180">
+            </div>
+            
+            <h1>{{ALT_TELEPARTY_TITLE}}</h1>
+
+            <!-- Intro -->
+            <section>
+                <p><em>{{ALT_TELEPARTY_INTRO}}</em></p>
+            </section>
+
+            <!-- When Teleparty may still make sense -->
+            <section>
+                <h2>{{ALT_TELEPARTY_WHEN_TELE_TITLE}}</h2>
+                <p>{{ALT_TELEPARTY_WHEN_TELE_BODY}}</p>
+            </section>
+
+            <!-- When KoalaSync may fit better -->
+            <section>
+                <h2>{{ALT_TELEPARTY_WHEN_KOALA_TITLE}}</h2>
+                <p>{{ALT_TELEPARTY_WHEN_KOALA_BODY}}</p>
+            </section>
+
+            <!-- The main difference -->
+            <section>
+                <h2>{{ALT_TELEPARTY_MAIN_DIFF_TITLE}}</h2>
+                <p>{{ALT_TELEPARTY_MAIN_DIFF_BODY}}</p>
+            </section>
+
+            <!-- Honest limitations -->
+            <section>
+                <h2>{{ALT_TELEPARTY_LIMITS_TITLE}}</h2>
+                <p>{{ALT_TELEPARTY_LIMITS_BODY}}</p>
+            </section>
+
+            <!-- Summary -->
+            <section>
+                <h2>{{ALT_TELEPARTY_SUMMARY_TITLE}}</h2>
+                <p>{{ALT_TELEPARTY_SUMMARY_BODY}}</p>
+            </section>
+
+            <!-- CTA block -->
+            <div style="display: flex; flex-direction: column; align-items: center; justify-content: center; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--glass-border);">
+                <a href="{{ASSET_PATH}}" class="btn btn-primary" style="margin-bottom: 1.5rem;">{{ALT_TRY_KOALASYNC}}</a>
+                <p style="font-size: 0.9rem; text-align: center;">
+                    <a href="{{ASSET_PATH}}alternatives/screen-sharing" style="color: var(--accent); text-decoration: none;">{{ALT_SCREEN_TITLE}}</a>
+                </p>
+            </div>
+
+        </div>
+    </main>
+
+    <footer>
+        <div class="container">
+            <p>&copy; 2026 KoalaSync. {{FOOTER_MIT}}</p>
+            <p style="font-size: 0.8rem; margin-top: 0.5rem;">{{FOOTER_RAM}}</p>
+            <div style="margin-top: 1.5rem; font-size: 0.8rem; display: flex; justify-content: center; align-items: center; gap: 1.5rem; flex-wrap: wrap;">
+                <a href="{{ASSET_PATH}}{{FOOTER_LEGAL_LINK}}">{{FOOTER_LEGAL}}</a>
+                <a href="{{ASSET_PATH}}{{FOOTER_PRIVACY_LINK}}">{{FOOTER_PRIVACY}}</a>
+                <a href="{{ASSET_PATH}}{{LANG_PREFIX}}alternatives"><span><span lang="en">Guides & comparisons</span><span lang="de">Vergleiche & Anleitungen</span></span></a>
+                <a href="https://mastodon.social/@koalastuff" rel="me noopener" target="_blank" style="display: inline-flex; align-items: center; gap: 4px;">
+                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="14" height="14" aria-hidden="true" style="display: block;"><path d="M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z"/></svg>
+                    Mastodon
+                </a>
+            </div>
+        </div>
+    </footer>
+
+    <script src="{{ASSET_PATH}}app.min.js"></script>
+</body>
+</html>
diff --git a/website/app.js b/website/app.js
index 3a1a83d..a6b5054 100644
--- a/website/app.js
+++ b/website/app.js
@@ -488,6 +488,14 @@ document.addEventListener('DOMContentLoaded', () => {
             homeLinks.forEach(link => {
                 link.href = (activeLang === 'en') ? './' : `${activeLang}/`;
             });
+
+            const altLinks = document.querySelectorAll('a[href*="alternatives"]');
+            altLinks.forEach(link => {
+                const attr = link.getAttribute('href');
+                if (attr === 'alternatives' || attr === 'alternatives/teleparty' || attr.endsWith('/alternatives')) {
+                    link.href = (activeLang === 'en') ? 'alternatives' : `${activeLang}/alternatives`;
+                }
+            });
         }
     };
 
@@ -529,6 +537,29 @@ document.addEventListener('DOMContentLoaded', () => {
             return;
         }
         
+        const pathSegments = path.split('/');
+        const isAlternative = pathSegments.includes('alternatives');
+        if (isAlternative) {
+            let target;
+            const firstSeg = pathSegments[1];
+            const isLangSubdir = ['de', 'fr', 'es', 'it', 'nl', 'pl', 'pt', 'pt-BR', 'tr', 'ru', 'ja', 'ko', 'zh', 'uk'].includes(firstSeg);
+            
+            if (newLang === 'en') {
+                if (isLangSubdir) {
+                    pathSegments.splice(1, 1);
+                }
+            } else {
+                if (isLangSubdir) {
+                    pathSegments[1] = newLang;
+                } else {
+                    pathSegments.splice(1, 0, newLang);
+                }
+            }
+            target = pathSegments.join('/');
+            window.location.href = target + window.location.hash;
+            return;
+        }
+        
         // Determine if we are on a static landing page versus a dynamic utility page
         const isIndex = !path.includes('join');
         
diff --git a/website/build.cjs b/website/build.cjs
index f178971..e6b04ad 100644
--- a/website/build.cjs
+++ b/website/build.cjs
@@ -174,6 +174,8 @@ async function compile() {
         let compiled = templateContent;
         compiled = compiled.replace(/\{\{ASSET_PATH\}\}/g, assetPath);
         compiled = compiled.replace(/\{\{VERSION\}\}/g, buildVersion);
+        const langPrefix = lang === 'en' ? '' : `${lang}/`;
+        compiled = compiled.replace(/\{\{LANG_PREFIX\}\}/g, langPrefix);
         languages.forEach(l => {
             compiled = compiled.replace(new RegExp(`\\{\\{SELECTED_${l.toUpperCase()}\\}\\}`, 'g'), l === lang ? 'selected' : '');
         });
@@ -183,6 +185,44 @@ async function compile() {
         return compiled;
     }
 
+    // Read alternative page templates
+    const telepartyTemplatePath = path.join(websiteDir, 'alternatives/teleparty.html');
+    const screenSharingTemplatePath = path.join(websiteDir, 'alternatives/screen-sharing.html');
+    const overviewTemplatePath = path.join(websiteDir, 'alternatives/index.html');
+    const hasTelepartyTemplate = fs.existsSync(telepartyTemplatePath);
+    const hasScreenSharingTemplate = fs.existsSync(screenSharingTemplatePath);
+    const hasOverviewTemplate = fs.existsSync(overviewTemplatePath);
+    const telepartyTemplate = hasTelepartyTemplate ? fs.readFileSync(telepartyTemplatePath, 'utf8') : '';
+    const screenSharingTemplate = hasScreenSharingTemplate ? fs.readFileSync(screenSharingTemplatePath, 'utf8') : '';
+    const overviewTemplate = hasOverviewTemplate ? fs.readFileSync(overviewTemplatePath, 'utf8') : '';
+
+    // Preload English locale for fallback
+    const englishLocalePath = path.join(localesDir, 'en.json');
+    const englishLocale = JSON.parse(fs.readFileSync(englishLocalePath, 'utf8'));
+
+    function compileAlternativePage(templateContent, locale, lang, assetPath, langPrefix) {
+        let compiled = templateContent;
+        compiled = compiled.replace(/\{\{LANG_CODE\}\}/g, lang);
+        compiled = compiled.replace(/\{\{ASSET_PATH\}\}/g, assetPath);
+        compiled = compiled.replace(/\{\{LANG_PREFIX\}\}/g, langPrefix);
+        compiled = compiled.replace(/\{\{VERSION\}\}/g, buildVersion);
+
+        const indexTitle = lang === 'de' ? 'KoalaSync - Vergleiche & Anleitungen' : 'KoalaSync - Alternatives & Comparisons';
+        const indexDesc = lang === 'de' 
+            ? 'Entdecke ehrliche Vergleiche und detaillierte Leitfäden zwischen KoalaSync und anderen Watch-Party-Erweiterungen.' 
+            : 'Explore honest comparisons and detailed guides comparing KoalaSync with other watch party extensions and streaming solutions.';
+
+        compiled = compiled.replace(/\{\{ALT_INDEX_TITLE\}\}/g, indexTitle);
+        compiled = compiled.replace(/\{\{ALT_INDEX_META_DESC\}\}/g, indexDesc);
+
+        // Merge locale with English fallback for keys not present in current locale
+        const mergedLocale = { ...englishLocale, ...locale };
+        for (const [key, value] of Object.entries(mergedLocale)) {
+            compiled = compiled.replace(new RegExp(`\\{\\{${key}\\}\\}`, 'g'), value);
+        }
+        return compiled;
+    }
+
     for (const lang of languages) {
         const localePath = path.join(localesDir, `${lang}.json`);
         if (!fs.existsSync(localePath)) { console.warn(`Warning: Locale ${lang} not found.`); continue; }
@@ -193,6 +233,26 @@ async function compile() {
             const html = compilePage(locale, '', lang);
             fs.writeFileSync(path.join(wwwDir, 'index.html'), html);
             englishHtml[''] = html;
+
+            // Compile alternatives for English (assets resolved using '../' prefix)
+            if (hasTelepartyTemplate) {
+                const altDir = path.join(wwwDir, 'alternatives');
+                fs.mkdirSync(altDir, { recursive: true });
+                const tpCompiled = compileAlternativePage(telepartyTemplate, locale, lang, '../', '');
+                fs.writeFileSync(path.join(altDir, 'teleparty.html'), tpCompiled);
+            }
+            if (hasScreenSharingTemplate) {
+                const altDir = path.join(wwwDir, 'alternatives');
+                fs.mkdirSync(altDir, { recursive: true });
+                const ssCompiled = compileAlternativePage(screenSharingTemplate, locale, lang, '../', '');
+                fs.writeFileSync(path.join(altDir, 'screen-sharing.html'), ssCompiled);
+            }
+            if (hasOverviewTemplate) {
+                const altDir = path.join(wwwDir, 'alternatives');
+                fs.mkdirSync(altDir, { recursive: true });
+                const ovCompiled = compileAlternativePage(overviewTemplate, locale, lang, '../', '');
+                fs.writeFileSync(path.join(altDir, 'index.html'), ovCompiled);
+            }
         } else {
             console.log(`Compiling ${lang.toUpperCase()} (${lang}/index.html)...`);
             const langDir = path.join(wwwDir, lang);
@@ -200,6 +260,26 @@ async function compile() {
             const html = compilePage(locale, '../', lang);
             fs.writeFileSync(path.join(langDir, 'index.html'), html);
             englishHtml[lang] = html;
+
+            // Compile alternatives for other languages (assets resolved using '../../' prefix)
+            if (hasTelepartyTemplate) {
+                const langAltDir = path.join(langDir, 'alternatives');
+                fs.mkdirSync(langAltDir, { recursive: true });
+                const tpCompiled = compileAlternativePage(telepartyTemplate, locale, lang, '../../', lang + '/');
+                fs.writeFileSync(path.join(langAltDir, 'teleparty.html'), tpCompiled);
+            }
+            if (hasScreenSharingTemplate) {
+                const langAltDir = path.join(langDir, 'alternatives');
+                fs.mkdirSync(langAltDir, { recursive: true });
+                const ssCompiled = compileAlternativePage(screenSharingTemplate, locale, lang, '../../', lang + '/');
+                fs.writeFileSync(path.join(langAltDir, 'screen-sharing.html'), ssCompiled);
+            }
+            if (hasOverviewTemplate) {
+                const langAltDir = path.join(langDir, 'alternatives');
+                fs.mkdirSync(langAltDir, { recursive: true });
+                const ovCompiled = compileAlternativePage(overviewTemplate, locale, lang, '../../', lang + '/');
+                fs.writeFileSync(path.join(langAltDir, 'index.html'), ovCompiled);
+            }
         }
     }
 
@@ -219,6 +299,7 @@ async function compile() {
         const src = path.join(websiteDir, mapping.src);
         const dest = path.join(wwwDir, mapping.dest);
         if (fs.existsSync(src)) {
+            fs.mkdirSync(path.dirname(dest), { recursive: true });
             fs.copyFileSync(src, dest);
             console.log(`  Copied: ${mapping.src} → ${mapping.dest}`);
         }
@@ -278,23 +359,15 @@ async function compile() {
         let html = fs.readFileSync(filePath, 'utf8');
 
         // 8a. Replace hashed asset refs
-        html = html.replace(/href="(?:\.\.\/)?style\.min\.css"/g, (m) => {
-            const prefix = m.includes('../') ? '../' : '';
+        html = html.replace(/href="((?:\.\.\/)*)style\.min\.css"/g, (m, prefix) => {
             return `href="${prefix}${styleName}"`;
         });
-        html = html.replace(/src="(?:\.\.\/)?app\.min\.js"/g, (m) => {
-            const prefix = m.includes('../') ? '../' : '';
+        html = html.replace(/src="((?:\.\.\/)*)app\.min\.js"/g, (m, prefix) => {
             return `src="${prefix}${appName}"`;
         });
-        html = html.replace(/src="(?:\.\.\/)?lang-init\.min\.js"/g, (m) => {
-            const prefix = m.includes('../') ? '../' : '';
+        html = html.replace(/src="((?:\.\.\/)*)lang-init\.min\.js"/g, (m, prefix) => {
             return `src="${prefix}${langName}"`;
         });
-        // Also update preload directives
-        html = html.replace(/href="(?:\.\.\/)?style\.min\.css"/g, (m) => {
-            const prefix = m.includes('../') ? '../' : '';
-            return `href="${prefix}${styleName}"`;
-        });
 
         // 8b. Inject AVIF <picture> wrappers
         html = injectAvifPictures(html);
diff --git a/website/datenschutz-de.html b/website/datenschutz-de.html
index 29dfaad..6cd7f39 100644
--- a/website/datenschutz-de.html
+++ b/website/datenschutz-de.html
@@ -160,6 +160,7 @@
             <div style="margin-top: 1.5rem; font-size: 0.8rem; display: flex; justify-content: center; align-items: center; gap: 1.5rem; flex-wrap: wrap;">
                 <a href="impressum" style="color: var(--text-muted); text-decoration: none;">Impressum</a>
                 <a href="datenschutz" style="color: var(--text-muted); text-decoration: none;">Datenschutz</a>
+                <a href="alternatives/teleparty">Vergleiche & Anleitungen</a>
                 <a href="https://mastodon.social/@koalastuff" rel="me noopener" target="_blank" style="color: var(--text-muted); text-decoration: none; display: inline-flex; align-items: center; gap: 4px;">
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="14" height="14" aria-hidden="true" style="display: block;"><path d="M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z"/></svg>
                     Mastodon
diff --git a/website/impressum-de.html b/website/impressum-de.html
index e5aa2c5..17c82a9 100644
--- a/website/impressum-de.html
+++ b/website/impressum-de.html
@@ -147,6 +147,7 @@
             <div style="margin-top: 1.5rem; font-size: 0.8rem; display: flex; justify-content: center; align-items: center; gap: 1.5rem; flex-wrap: wrap;">
                 <a href="impressum" style="color: var(--text-muted); text-decoration: none;">Impressum</a>
                 <a href="datenschutz" style="color: var(--text-muted); text-decoration: none;">Datenschutz</a>
+                <a href="alternatives">Vergleiche & Anleitungen</a>
                 <a href="https://mastodon.social/@koalastuff" rel="me noopener" target="_blank" style="color: var(--text-muted); text-decoration: none; display: inline-flex; align-items: center; gap: 4px;">
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="14" height="14" aria-hidden="true" style="display: block;"><path d="M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z"/></svg>
                     Mastodon
diff --git a/website/imprint.html b/website/imprint.html
index 94dc2ab..45c31d9 100644
--- a/website/imprint.html
+++ b/website/imprint.html
@@ -145,6 +145,7 @@
             <div style="margin-top: 1.5rem; font-size: 0.8rem; display: flex; justify-content: center; align-items: center; gap: 1.5rem; flex-wrap: wrap;">
                 <a href="imprint" style="color: var(--text-muted); text-decoration: none;">Legal Notice</a>
                 <a href="privacy" style="color: var(--text-muted); text-decoration: none;">Privacy Policy</a>
+                <a href="alternatives">Guides & comparisons</a>
                 <a href="https://mastodon.social/@koalastuff" rel="me noopener" target="_blank" style="color: var(--text-muted); text-decoration: none; display: inline-flex; align-items: center; gap: 4px;">
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="14" height="14" aria-hidden="true" style="display: block;"><path d="M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z"/></svg>
                     Mastodon
diff --git a/website/join.html b/website/join.html
index de2bece..74cd796 100644
--- a/website/join.html
+++ b/website/join.html
@@ -119,6 +119,7 @@
             <div style="margin-top: 1.5rem; font-size: 0.8rem; display: flex; justify-content: center; align-items: center; gap: 1.5rem; flex-wrap: wrap;">
                 <a href="impressum" style="color: var(--text-muted); text-decoration: none;"><span lang="en">Legal Notice</span><span lang="de">Impressum</span></a>
                 <a href="datenschutz" style="color: var(--text-muted); text-decoration: none;"><span lang="en">Privacy Policy</span><span lang="de">Datenschutz</span></a>
+                <a href="alternatives"><span lang="en">Guides & comparisons</span><span lang="de">Vergleiche & Anleitungen</span></a>
                 <a href="https://mastodon.social/@koalastuff" rel="me noopener" target="_blank" style="color: var(--text-muted); text-decoration: none; display: inline-flex; align-items: center; gap: 4px;">
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="14" height="14" aria-hidden="true" style="display: block;"><path d="M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z"/></svg>
                     Mastodon
diff --git a/website/locales/de.json b/website/locales/de.json
index 5ca7a2a..25be927 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -176,5 +176,32 @@
   "FOOTER_LEGAL_LINK": "de/impressum",
   "FOOTER_PRIVACY_LINK": "de/datenschutz",
   "FOOTER_DISCLAIMER": "KoalaSync ist nicht mit Netflix, Disney+, Amazon, YouTube, Twitch oder anderen Streaming-Plattformen verbunden, wird von diesen nicht unterstützt oder steht in keiner Beziehung zu diesen. Alle Markenrechte liegen bei ihren jeweiligen Inhabern.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TELEPARTY_TITLE": "KoalaSync vs Teleparty: Welche Watch-Party-Lösung passt besser?",
+  "ALT_TELEPARTY_META_DESC": "Ein ehrlicher Vergleich von KoalaSync und Teleparty für Watch-Partys, eingebauten Chat, Mobile-Support, Browser-Video-Sync, selbst gehostete Medienserver und Open Source.",
+  "ALT_TELEPARTY_INTRO": "KoalaSync und Teleparty lösen beide dasselbe nervige Problem: Du willst mit anderen Leuten online etwas schauen, ohne ständig „3, 2, 1, Play“ sagen zu müssen. Beide synchronisieren Videowiedergabe, aber sie gehen ziemlich unterschiedlich an die Sache ran.<br><br>Teleparty ist sinnvoll, wenn du einen eingebauten Chat möchtest oder am Handy schauen willst. KoalaSync ist eher für Desktop-Browser-Watch-Partys gedacht, bei denen du sowieso schon mit Freunden in Discord, Teamspeak oder einem anderen Voice-Call bist und einfach nur die Wiedergabe synchron halten möchtest.<br><br>Der Hauptgrund, warum ich KoalaSync gebaut habe, war Flexibilität. Es soll mit fast jeder Website funktionieren, die einen normalen Browser-Videoplayer nutzt, nicht nur mit einer festen Liste an Plattformen. Dazu gehören auch selbst gehostete Setups wie Emby, Jellyfin und Plex, lokale oder private Domains und viele normale Videoseiten im Browser.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Wann Teleparty trotzdem sinnvoller sein kann",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Teleparty kann trotzdem die bessere Wahl sein, wenn du den Chat direkt im Watch-Party-Tool haben möchtest. KoalaSync hat aktuell keinen eingebauten Chat. Es geht eher davon aus, dass du sowieso schon woanders mit deinen Freunden redest, zum Beispiel in Discord, Teamspeak, WhatsApp, Signal oder einem normalen Anruf.<br><br>Mobile ist der zweite große Unterschied. Teleparty hat eine App, während KoalaSync aktuell nur auf Desktop-Browsern läuft. Wenn du Netflix oder andere Inhalte am Handy oder Tablet synchron schauen möchtest, ist KoalaSync im Moment nicht das richtige Tool dafür.<br><br>Wenn dir also vor allem eingebauter Chat und Mobile-Support wichtig sind, passt Teleparty wahrscheinlich besser zu deinem Setup.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "Wann KoalaSync besser passt",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "KoalaSync passt besser, wenn du ein flexibles Sync-Tool für den Desktop-Browser suchst und nicht auf eine kurze Plattformliste beschränkt sein möchtest.<br><br>Es funktioniert mit fast jeder Website, die einen normalen Browser-Videoplayer nutzt. Das ist besonders nützlich für Emby, Jellyfin, Plex, private Medienserver, lokale Domains oder kleinere Videoseiten, die klassische Watch-Party-Tools meistens gar nicht beachten.<br><br>Außerdem ist KoalaSync kostenlos, Open Source, braucht keine Accounts und kann bei Bedarf selbst gehostet werden. Ich habe es gebaut, weil ich etwas Privacy-freundliches wollte, das mit meinem eigenen Emby-Setup funktioniert, nicht noch eine geschlossene Plattform nur für ein paar große Streaming-Seiten.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "Der wichtigste Unterschied",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty ist eher ein Watch-Party-Produkt mit Chat und Mobile-Unterstützung. KoalaSync ist eher eine flexible Sync-Schicht für Browser-Video.<br><br>Das klingt erstmal nach einem kleinen Unterschied, ändert aber den Use Case ziemlich stark. Wenn du eine Watch-Party-App mit eingebautem Chat brauchst, ergibt Teleparty Sinn. Wenn du schon einen Voice-Call hast und nur möchtest, dass Play, Pause und Seek zwischen mehreren Browsern synchron bleiben, passt KoalaSync besser.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Ehrliche Grenzen",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync ist nicht magisch und versucht auch nicht, seine Grenzen zu verstecken. Es funktioniert aktuell nur auf Desktop-Browsern. Es gibt keinen eingebauten Chat und keine Mobile-App.<br><br>Die Kompatibilität hängt außerdem vom Browser und vom jeweiligen Videoplayer ab. KoalaSync sollte mit fast jedem normalen Browser-Videoplayer funktionieren, aber Websites können ihre Player, DRM-Logik oder Browser-Einschränkungen jederzeit ändern.<br><br>KoalaSync ist nicht mit Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex oder anderen hier genannten Marken verbunden. Die Namen werden nur verwendet, um typische Anwendungsfälle verständlich zu beschreiben.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Kurz gesagt",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Wenn du eingebauten Chat oder Mobile-Support brauchst, passt Teleparty wahrscheinlich besser. Wenn du kostenlose, Open-Source-Desktop-Browser-Synchronisierung möchtest, die mit fast jedem normalen Videoplayer funktioniert, inklusive selbst gehosteter Medienserver wie Emby, Jellyfin und Plex, ist KoalaSync wahrscheinlich die passendere Wahl.",
+  "ALT_SCREEN_TITLE": "KoalaSync vs Bildschirmübertragung: Wann ist Video-Sync besser?",
+  "ALT_SCREEN_META_DESC": "Ein ehrlicher Vergleich von KoalaSync und Bildschirmübertragung für Filmabende, Wiedergabekontrolle, Videoqualität, Privatsphäre, Untertitel und gemeinsames Schauen im Browser.",
+  "ALT_SCREEN_INTRO": "Bildschirmübertragung funktioniert, und manchmal reicht das auch völlig. Eine Person teilt den Bildschirm, alle anderen schauen zu, fertig.<br><br>Bei längeren Filmabenden oder Serien kann das aber schnell nervig werden. Die Qualität hängt vom Upload, der CPU, dem Browser und der Komprimierung durch Discord, Teamspeak, Zoom oder andere Call-Apps ab. Außerdem kontrolliert nur eine Person wirklich die Wiedergabe.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Wann Bildschirmübertragung reicht",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Screen Sharing ist sinnvoll, wenn es möglichst schnell gehen soll. Wenn nur eine Person Zugriff auf das Video hat oder alle damit okay sind, dass eine Person Play, Pause und Spulen kontrolliert, ist es wahrscheinlich die einfachste Lösung.<br><br>Es reicht auch oft, wenn die Qualität nicht so wichtig ist, niemand eigene Untertitel oder Audio-Einstellungen braucht und die Person, die teilt, kein Problem damit hat, genau dieses Fenster oder diesen Bildschirm zu zeigen.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Wo Bildschirmübertragung nervig wird",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "Der größte Nachteil ist, dass nicht jeder im eigenen Player schaut. Eine Person streamt den Bildschirm, alle anderen sehen nur diesen Stream.<br><br>Das kann schlechtere Bildqualität, komprimierten Ton, Verzögerung und weniger Kontrolle für alle anderen bedeuten. Untertitel und Audiospur sind außerdem genau das, was die teilende Person eingestellt hat.<br><br>Dazu kommt der Privacy-Aspekt. Wenn du Fenster oder Tabs wechselst, können andere kurz deine Browser-Tabs, Mails, Reddit, Chats oder andere private Dinge sehen. Man kann das mit einem separaten Fenster umgehen, aber man muss trotzdem daran denken.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Warum KoalaSync sauberer sein kann",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync überträgt nicht deinen Bildschirm. Jeder schaut das Video lokal im eigenen Browser, und KoalaSync hält nur Aktionen wie Play, Pause und Spulen zwischen allen Teilnehmern synchron.<br><br>Dadurch kann jeder lokal Vollbild nutzen, eigene Untertitel oder Audio-Einstellungen verwenden, sofern der Player das unterstützt, und der Voice-Call bleibt separat in Discord, Teamspeak oder einer anderen App.<br><br>Für Filmabende fühlt sich das oft deutlich sauberer an, als wenn eine Person den ganzen Bildschirm streamt. Besonders praktisch ist das bei browserbasierten Setups wie Emby, Jellyfin, Plex, lokalen Dateien im Browser, privaten Domains oder anderen Websites mit normalen Browser-Videoplayern.",
+  "ALT_SCREEN_LIMITS_TITLE": "Ehrliche Grenzen",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync ersetzt keinen Voice-Call. Wenn ihr beim Schauen reden wollt, nutzt ihr weiterhin Discord, Teamspeak, Signal, WhatsApp oder was auch immer ihr normalerweise verwendet.<br><br>Außerdem braucht jede Person selbst Zugriff auf das Video oder die jeweilige Seite. KoalaSync umgeht keine Abos, Logins, DRM, regionale Einschränkungen oder Plattformregeln.<br><br>KoalaSync ist aktuell Desktop-Browser-only, hat keinen eingebauten Chat oder Voice-Chat und die Funktion hängt immer vom jeweiligen Browser und Videoplayer ab.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Kurz gesagt",
+  "ALT_SCREEN_SUMMARY_BODY": "Bildschirmübertragung ist die einfachste Lösung, wenn es schnell gehen soll und Qualität, Privatsphäre oder individuelle Kontrolle nicht so wichtig sind. KoalaSync passt besser, wenn jeder lokal im eigenen Browser schauen soll und sich der Filmabend mehr wie wirklich gemeinsames Schauen anfühlen soll.",
+  "ALT_TRY_KOALASYNC": "KoalaSync ausprobieren"
 }
diff --git a/website/locales/en.json b/website/locales/en.json
index 0cf5b22..fb1724a 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -176,5 +176,32 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync is not affiliated with, endorsed by, or associated with Netflix, Disney+, Amazon, YouTube, Twitch, or any other streaming platform. All trademarks are property of their respective owners.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TELEPARTY_TITLE": "KoalaSync vs Teleparty: which watch party tool should you use?",
+  "ALT_TELEPARTY_META_DESC": "A practical comparison of KoalaSync and Teleparty for watch parties, built-in chat, mobile support, browser video sync, self-hosted media servers and open-source use.",
+  "ALT_TELEPARTY_INTRO": "KoalaSync and Teleparty both help with the same annoying problem: watching something together without doing the whole \"3, 2, 1, play\" routine. They just take a different approach.<br><br>Teleparty makes the most sense if you want a built-in chat or if you want to watch on mobile. KoalaSync is more for desktop browser watch parties where you are already talking on Discord, Teamspeak or another voice call and just want playback to stay in sync.<br><br>The main reason I built KoalaSync was flexibility. It is meant to work with almost any website that uses a normal browser video player, not just a fixed list of platforms. That includes self-hosted setups like Emby, Jellyfin and Plex, local/private domains, and a lot of normal video pages in the browser.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "When Teleparty may still make sense",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Teleparty can still be the better choice if you want the chat to be part of the watch party tool itself. KoalaSync does not currently have a built-in chat. It assumes you are already talking somewhere else, like Discord, Teamspeak, WhatsApp, Signal or a normal call.<br><br>Mobile is the other big reason. Teleparty has an app, while KoalaSync currently only works on desktop browsers. If you want to sync Netflix on a phone or tablet, KoalaSync is not the right tool for that right now.<br><br>So if chat and mobile support are the things you care about most, Teleparty may simply fit your setup better.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "When KoalaSync may fit better",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "KoalaSync fits better if you want a flexible desktop browser sync tool instead of something tied to a short platform list.<br><br>It works with almost any website that uses a normal browser video player. That is especially useful for Emby, Jellyfin, Plex, private media servers, local domains, or smaller video sites that classic watch party tools usually ignore.<br><br>It is also free, open source, does not require accounts, and can be self-hosted if you want to run your own relay. I built it because I wanted something privacy-friendly that worked with my own Emby setup, not another closed platform just for a few big streaming sites.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "The main difference",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty is more of a watch party product with chat and mobile support. KoalaSync is more of a flexible sync layer for browser video.<br><br>That sounds like a small difference, but it changes the use case a lot. If you need a full watch party app with chat inside it, Teleparty makes sense. If you already have voice chat and just want the video controls to stay synced across browsers, KoalaSync is the simpler fit.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Honest limitations",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync is not magic and it is not trying to hide its limits. It currently works only on desktop browsers. It has no built-in chat and no mobile app.<br><br>Compatibility also depends on the browser and the video player. KoalaSync should work with almost any normal browser video player, but websites can change their players, DRM behavior or browser restrictions at any time.<br><br>KoalaSync is not affiliated with Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex or any other brand mentioned here. The names are only used to explain typical use cases.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Summary",
+  "ALT_TELEPARTY_SUMMARY_BODY": "If you want built-in chat or mobile support, Teleparty may be the better fit. If you want free, open-source desktop browser sync that works with almost any normal video player, including self-hosted media servers like Emby, Jellyfin and Plex, KoalaSync is probably the better match.",
+  "ALT_SCREEN_TITLE": "KoalaSync vs screen sharing: when is video sync better?",
+  "ALT_SCREEN_META_DESC": "A practical comparison of KoalaSync and screen sharing for remote movie nights, playback control, video quality, privacy, subtitles and browser-based watching.",
+  "ALT_SCREEN_INTRO": "Screen sharing works, and sometimes it is honestly enough. One person shares their screen, everyone else watches, and you are done.<br><br>But for longer movie nights or watching episodes together, it can get annoying. The video quality depends on the sharer\u2019s upload, CPU, browser, and whatever compression Discord, Teamspeak, Zoom or another call app applies. Also, only one person really controls the playback.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "When screen sharing is enough",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Screen sharing is fine when you want the fastest possible setup. If only one person has access to the video, or everyone is okay with one person controlling play, pause and seeking, it may be the simplest option.<br><br>It also makes sense when quality is not a big deal, when nobody needs their own subtitles or audio settings, and when the person sharing is comfortable showing that browser window or screen.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Where screen sharing gets annoying",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "The biggest downside is that not everyone is watching in their own player. One person streams their screen, and everyone else only sees that stream.<br><br>That can mean worse video quality, compressed audio, delayed playback, and less control for everyone else. Subtitles and audio tracks are also whatever the sharer picked.<br><br>There is also the privacy side. If you switch windows or tabs, people may briefly see your browser tabs, email, Reddit, chats or other private stuff. You can work around that with a separate window, but it is still something you have to think about.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Why KoalaSync can feel cleaner",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync does not stream your screen. Everyone watches the video locally in their own browser, and KoalaSync only keeps playback actions like play, pause and seeking in sync.<br><br>That means everyone can use fullscreen on their own device, use their own subtitle or audio settings if the player supports it, and keep the voice chat separate in Discord, Teamspeak or another call.<br><br>For movie nights, that can feel a lot cleaner than one person broadcasting their screen. It is especially useful for browser-based setups like Emby, Jellyfin, Plex, local files opened in the browser, private domains, or other websites with normal browser video players.",
+  "ALT_SCREEN_LIMITS_TITLE": "Honest limitations",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync is not a replacement for a voice call. If you want to talk while watching, you still use Discord, Teamspeak, Signal, WhatsApp or whatever you normally use.<br><br>Everyone also needs access to the video or page on their own device. KoalaSync does not bypass subscriptions, logins, DRM, regional restrictions or platform rules.<br><br>It is currently desktop-browser only, has no built-in chat or voice feature, and compatibility always depends on the browser and the video player.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Summary",
+  "ALT_SCREEN_SUMMARY_BODY": "Screen sharing is the simplest option when you just want something quick and do not care much about quality, privacy or individual control. KoalaSync is a better fit when everyone should watch locally in their own browser and the session should feel more like actually watching together.",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/es.json b/website/locales/es.json
index 46821eb..751d4d3 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync no está afiliado, respaldado ni asociado con Netflix, Disney+, Amazon, YouTube, Twitch ni ninguna otra plataforma de streaming. Todas las marcas comerciales pertenecen a sus respectivos dueños.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/fr.json b/website/locales/fr.json
index 79aa87b..fedf324 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync n'est pas affilié à Netflix, Disney+, Amazon, YouTube, Twitch ou toute autre plateforme de streaming. Toutes les marques déposées appartiennent à leurs détenteurs respectifs.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/it.json b/website/locales/it.json
index 3b0d699..ff16b81 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync non è affiliato a Netflix, YouTube o altre piattaforme. I marchi appartengono ai rispettivi proprietari.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/ja.json b/website/locales/ja.json
index cb949ec..6678f89 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSyncは、Netflix、Disney+、Amazon、YouTube、Twitch、またはその他のストリーミングプラットフォームと提携、承認、または関連付けられているものではありません。すべての商標はそれぞれの所有者に帰属します。",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/ko.json b/website/locales/ko.json
index c0a9be7..4c48a62 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync는 Netflix, Disney+, Amazon, YouTube, Twitch 또는 기타 스트리밍 플랫폼과 제휴, 보증 또는 연관되어 있지 않습니다. 모든 상표는 해당 소유자의 재산입니다.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/nl.json b/website/locales/nl.json
index 74c9596..d8f719e 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync is niet verbonden aan, goedgekeurd door of geassocieerd met Netflix, Disney+, Amazon, YouTube, Twitch of enig ander streamingplatform. Alle handelsmerken zijn eigendom van hun respectieve eigenaren.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/pl.json b/website/locales/pl.json
index be17924..dbc839a 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync nie jest powiązany, wspierany ani stowarzyszony z Netflix, Disney+, Amazon, YouTube, Twitch ani żadną inną platformą streamingową. Wszystkie znaki towarowe są własnością ich odpowiednich właścicieli.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index adf1d4e..107f693 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync não é afiliado à Netflix, Disney+, YouTube, Twitch, etc. Todas as marcas registradas são de propriedade de seus respectivos donos.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/pt.json b/website/locales/pt.json
index 8390172..cd0b7a7 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync não é afiliado à Netflix, Disney+, YouTube, Twitch, etc. Todas as marcas são propriedade dos seus titulares.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/ru.json b/website/locales/ru.json
index 5dd6a93..a8ea01e 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync не связан, не спонсируется и не аффилирован с Netflix, Disney+, Amazon, YouTube, Twitch или любой другой стриминговой платформой. Все товарные знаки являются собственностью их соответствующих владельцев.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/tr.json b/website/locales/tr.json
index 742f095..0a29918 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync; Netflix, Disney+, Amazon, YouTube, Twitch veya başka herhangi bir yayın platformuna bağlı değildir, bunlar tarafından desteklenmemektedir ve bunlarla ilişkili değildir. Tüm ticari markalar ilgili sahiplerinin mülkiyetindedir.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/uk.json b/website/locales/uk.json
index 4fae431..4b43e61 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync не пов’язаний із Netflix, Disney+, Amazon, YouTube, Twitch або будь-якою іншою потоковою платформою, не схвалений і не пов’язаний з ними. Усі торгові марки є власністю відповідних власників.",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/locales/zh.json b/website/locales/zh.json
index 02ed7b3..511d783 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -176,5 +176,6 @@
   "FOOTER_LEGAL_LINK": "imprint",
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync 不隶属于 Netflix、Disney+、Amazon、YouTube、Twitch 或任何其他流媒体平台，也不受其认可或关联。所有商标均为其各自所有者的财产。",
-  "FOOTER_SUPPORT": "Support KoalaSync"
+  "FOOTER_SUPPORT": "Support KoalaSync",
+  "ALT_TRY_KOALASYNC": "Try KoalaSync"
 }
diff --git a/website/privacy.html b/website/privacy.html
index d5b15fa..84b1226 100644
--- a/website/privacy.html
+++ b/website/privacy.html
@@ -163,6 +163,7 @@
             <div style="margin-top: 1.5rem; font-size: 0.8rem; display: flex; justify-content: center; align-items: center; gap: 1.5rem; flex-wrap: wrap;">
                 <a href="imprint" style="color: var(--text-muted); text-decoration: none;">Legal Notice</a>
                 <a href="privacy" style="color: var(--text-muted); text-decoration: none;">Privacy Policy</a>
+                <a href="alternatives">Guides & comparisons</a>
                 <a href="https://mastodon.social/@koalastuff" rel="me noopener" target="_blank" style="color: var(--text-muted); text-decoration: none; display: inline-flex; align-items: center; gap: 4px;">
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="14" height="14" aria-hidden="true" style="display: block;"><path d="M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z"/></svg>
                     Mastodon
diff --git a/website/sitemap.xml b/website/sitemap.xml
index 86f2d0f..1cb3f8b 100644
--- a/website/sitemap.xml
+++ b/website/sitemap.xml
@@ -25,6 +25,138 @@
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
+  <url>
+    <loc>https://sync.koalastuff.net/alternatives</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives"/>
+  </url>
+  <url>
+    <loc>https://sync.koalastuff.net/de/alternatives</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives"/>
+  </url>
+  <url>
+    <loc>https://sync.koalastuff.net/alternatives/teleparty</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives/teleparty"/>
+  </url>
+  <url>
+    <loc>https://sync.koalastuff.net/de/alternatives/teleparty</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives/teleparty"/>
+  </url>
+  <url>
+    <loc>https://sync.koalastuff.net/alternatives/screen-sharing</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
+  </url>
+  <url>
+    <loc>https://sync.koalastuff.net/de/alternatives/screen-sharing</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
+  </url>
   <url>
     <loc>https://sync.koalastuff.net/</loc>
     <lastmod>2026-06-23</lastmod>
diff --git a/website/style.css b/website/style.css
index 470dfe1..c851830 100644
--- a/website/style.css
+++ b/website/style.css
@@ -1828,6 +1828,17 @@ footer {
     color: var(--text-muted);
 }
 
+footer a {
+    color: var(--text-muted);
+    text-decoration: none;
+    transition: color 0.2s ease;
+}
+
+footer a:hover {
+    color: var(--text);
+}
+
+
 /* --- Animations --- */
 [data-reveal] {
     opacity: 0;
@@ -2564,12 +2575,9 @@ html:not(.lang-de) [lang="de"] {
         opacity: 0.85;
     }
 
-    .comparison-table td.check::before {
-        content: "KoalaSync";
-    }
-
+    .comparison-table td.check::before,
     .comparison-table td.cross::before {
-        content: "Teleparty";
+        content: attr(data-label);
     }
 
     /* Keep the KoalaSync row subtly highlighted, like on desktop. */
@@ -2930,7 +2938,29 @@ header[id] {
     .status-ring.active-pulse,
     .hero-mockup-wrapper,
     .cta-group .btn {
-        will-change: auto;
+    }
+}
+
+/* --- Alternatives Hub Styles --- */
+.guide-card {
+    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.25s ease, border-color 0.25s ease !important;
+}
+.guide-card:hover {
+    transform: translateY(-4px);
+    background-color: rgba(255, 255, 255, 0.07) !important;
+    border-color: rgba(255, 255, 255, 0.22) !important;
+    box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.4);
+}
+.guide-card .btn-primary {
+    transition: background-color 0.2s ease, transform 0.1s ease;
+}
+.guide-card .btn-primary:active {
+    transform: scale(0.97);
+}
+@media (max-width: 640px) {
+    .guides-grid {
+        grid-template-columns: 1fr !important;
+        gap: 1.25rem !important;
     }
 }
 
diff --git a/website/template.html b/website/template.html
index 069e921..a903049 100644
--- a/website/template.html
+++ b/website/template.html
@@ -783,8 +783,8 @@
                                 <strong><span>{{COMP_FEAT_1_NAME}}</span></strong>
                                 <span class="feat-desc"><span>{{COMP_FEAT_1_DESC}}</span></span>
                             </td>
-                            <td class="check highlight">✔ <span>{{COMP_FEAT_1_KOALA}}</span></td>
-                            <td class="cross">
+                            <td class="check highlight" data-label="KoalaSync">✔ <span>{{COMP_FEAT_1_KOALA}}</span></td>
+                            <td class="cross" data-label="Teleparty">
                                 ✘ <span>{{COMP_FEAT_1_TELE}}</span>
                                 <a href="https://www.teleparty.com/premium" target="_blank" rel="noopener noreferrer" class="source-link" title="See Teleparty Premium Pricing"><sup>[1]</sup></a>
                             </td>
@@ -794,8 +794,8 @@
                                 <strong><span>{{COMP_FEAT_2_NAME}}</span></strong>
                                 <span class="feat-desc"><span>{{COMP_FEAT_2_DESC}}</span></span>
                             </td>
-                            <td class="check highlight">✔ <span>{{COMP_FEAT_2_KOALA}}</span></td>
-                            <td class="cross">
+                            <td class="check highlight" data-label="KoalaSync">✔ <span>{{COMP_FEAT_2_KOALA}}</span></td>
+                            <td class="cross" data-label="Teleparty">
                                 ✘ <span>{{COMP_FEAT_2_TELE}}</span>
                                 <a href="https://www.teleparty.com/privacy" target="_blank" rel="noopener noreferrer" class="source-link" title="See Teleparty Privacy Policy"><sup>[2]</sup></a>
                             </td>
@@ -805,8 +805,8 @@
                                 <strong><span>{{COMP_FEAT_3_NAME}}</span></strong>
                                 <span class="feat-desc"><span>{{COMP_FEAT_3_DESC}}</span></span>
                             </td>
-                            <td class="check highlight">✔ <span>{{COMP_FEAT_3_KOALA}}</span></td>
-                            <td class="cross">
+                            <td class="check highlight" data-label="KoalaSync">✔ <span>{{COMP_FEAT_3_KOALA}}</span></td>
+                            <td class="cross" data-label="Teleparty">
                                 ✘ <span>{{COMP_FEAT_3_TELE}}</span>
                                 <a href="https://www.teleparty.com/privacy" target="_blank" rel="noopener noreferrer" class="source-link" title="See Teleparty Privacy Policy"><sup>[2]</sup></a>
                             </td>
@@ -816,8 +816,8 @@
                                 <strong><span>{{COMP_FEAT_4_NAME}}</span></strong>
                                 <span class="feat-desc"><span>{{COMP_FEAT_4_DESC}}</span></span>
                             </td>
-                            <td class="check highlight">✔ <span>{{COMP_FEAT_4_KOALA}}</span></td>
-                            <td class="cross">
+                            <td class="check highlight" data-label="KoalaSync">✔ <span>{{COMP_FEAT_4_KOALA}}</span></td>
+                            <td class="cross" data-label="Teleparty">
                                 ✘ <span>{{COMP_FEAT_4_TELE}}</span>
                                 <a href="https://www.teleparty.com/privacy" target="_blank" rel="noopener noreferrer" class="source-link" title="See Teleparty Privacy Policy"><sup>[2]</sup></a>
                             </td>
@@ -827,8 +827,8 @@
                                 <strong><span>{{COMP_FEAT_5_NAME}}</span></strong>
                                 <span class="feat-desc"><span>{{COMP_FEAT_5_DESC}}</span></span>
                             </td>
-                             <td class="check highlight">✔ <span>{{COMP_FEAT_5_KOALA}}</span><a href="#footnote-3" class="source-link" title="Technical Compatibility Details"><sup>[3]</sup></a></td>
-                            <td class="cross">
+                             <td class="check highlight" data-label="KoalaSync">✔ <span>{{COMP_FEAT_5_KOALA}}</span><a href="#footnote-3" class="source-link" title="Technical Compatibility Details"><sup>[3]</sup></a></td>
+                            <td class="cross" data-label="Teleparty">
                                 ✘ <span>{{COMP_FEAT_5_TELE}}</span>
                                 <a href="https://www.teleparty.com/premium" target="_blank" rel="noopener noreferrer" class="source-link" title="See Teleparty Premium Platforms"><sup>[1]</sup></a>
                             </td>
@@ -838,8 +838,8 @@
                                 <strong><span>{{COMP_FEAT_6_NAME}}</span></strong>
                                 <span class="feat-desc"><span>{{COMP_FEAT_6_DESC}}</span></span>
                             </td>
-                            <td class="check highlight">✔ <span>{{COMP_FEAT_6_KOALA}}</span></td>
-                            <td class="cross">
+                            <td class="check highlight" data-label="KoalaSync">✔ <span>{{COMP_FEAT_6_KOALA}}</span></td>
+                            <td class="cross" data-label="Teleparty">
                                 ✘ <span>{{COMP_FEAT_6_TELE}}</span>
                             </td>
                         </tr>
@@ -848,8 +848,8 @@
                                 <strong><span>{{COMP_FEAT_7_NAME}}</span></strong>
                                 <span class="feat-desc"><span>{{COMP_FEAT_7_DESC}}</span></span>
                             </td>
-                            <td class="check highlight">✔ <span>{{COMP_FEAT_7_KOALA}}</span></td>
-                            <td class="cross">
+                            <td class="check highlight" data-label="KoalaSync">✔ <span>{{COMP_FEAT_7_KOALA}}</span></td>
+                            <td class="cross" data-label="Teleparty">
                                 ✘ <span>{{COMP_FEAT_7_TELE}}</span>
                             </td>
                         </tr>
@@ -1265,6 +1265,7 @@
             <div style="margin-top: 1.5rem; font-size: 0.8rem; display: flex; justify-content: center; align-items: center; gap: 1.5rem; flex-wrap: wrap;">
                 <a href="{{ASSET_PATH}}{{FOOTER_LEGAL_LINK}}" style="color: var(--text-muted); text-decoration: none;"><span>{{FOOTER_LEGAL}}</span></a>
                 <a href="{{ASSET_PATH}}{{FOOTER_PRIVACY_LINK}}" style="color: var(--text-muted); text-decoration: none;"><span>{{FOOTER_PRIVACY}}</span></a>
+                <a href="{{ASSET_PATH}}{{LANG_PREFIX}}alternatives"><span><span lang="en">Guides & comparisons</span><span lang="de">Vergleiche & Anleitungen</span></span></a>
                 <a href="https://support.koalastuff.net" target="_blank" rel="noopener" title="{{FOOTER_SUPPORT}}" style="color: #fff; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; background: #ff5e5b; border: 1px solid rgba(255,255,255,0.18); border-radius: 999px; padding: 3px 9px; font-size: 0.72rem; font-weight: 700; line-height: 1;">
                     <span aria-hidden="true">♥</span>
                     <span>{{FOOTER_SUPPORT}}</span>

From e795339924b8d6c79eb72fa61dd0e389a3c808f2 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 25 Jun 2026 03:00:02 +0200
Subject: [PATCH 032/151] Add ALT_* translations for ja, ko, zh + rebuild
 assets

Replaced English fallback with proper Japanese, Korean, and Chinese
translations for all 27 ALT_* website locale keys. All 15 locale
files now fully translated; npm run verify and build pass cleanly.
---
 website/assets/NewLogoIcon_64.webp | Bin 1282 -> 1282 bytes
 website/locales/es.json            |  28 +++++++++++++++++++++++++++-
 website/locales/fr.json            |  28 +++++++++++++++++++++++++++-
 website/locales/it.json            |  28 +++++++++++++++++++++++++++-
 website/locales/ja.json            |  28 +++++++++++++++++++++++++++-
 website/locales/ko.json            |  28 +++++++++++++++++++++++++++-
 website/locales/nl.json            |  28 +++++++++++++++++++++++++++-
 website/locales/pl.json            |  28 +++++++++++++++++++++++++++-
 website/locales/pt-BR.json         |  28 +++++++++++++++++++++++++++-
 website/locales/pt.json            |  28 +++++++++++++++++++++++++++-
 website/locales/ru.json            |  28 +++++++++++++++++++++++++++-
 website/locales/tr.json            |  28 +++++++++++++++++++++++++++-
 website/locales/uk.json            |  28 +++++++++++++++++++++++++++-
 website/locales/zh.json            |  28 +++++++++++++++++++++++++++-
 14 files changed, 351 insertions(+), 13 deletions(-)

diff --git a/website/assets/NewLogoIcon_64.webp b/website/assets/NewLogoIcon_64.webp
index 660ffe28987821948744dafb8543121d3c9924ee..b1f4e43ede2c8f7304360593b419303eb296c0d2 100644
GIT binary patch
delta 175
zcmV;g08sye3W5r-j{*uP3wTE6hMStHV6&M5(*b{}TcN{oo+V6*L_a%Yrc!p2D?t#c
zOKs7r7~J4m$Dv1=mJaDq77GQQQ>rw7XYD@K>HoHNx9RHcyI5?-@+?sg|AU>&-G4md
zD$=Kt1fjo2eO@GCUGUCe6T6+N5TM#$rGCu%%0C_&{K4-ZrketIuEE5-AGFN%Jt!V_
dA-)%z8o>$A#3xK?o>SG_`v#;TD2(v9006+KRrvq_

delta 175
zcmV;g08sye3W5r-j{*uRbh!h)p{C}lShJY|(*b{`0tbHB-=W1lvs8JmTg?5P$6NU|
zO#PNrF}c9Ck3x?#EFIFIEEWqqr&MVE&)R*f)BkMkZ`0M?cCguv<XEB~{|7sly8d~@
zRi#fP2}6F4`n*WOyWyO`=q~VL0Ooo5E9abon$}J<ILvCrjPmN9T=EIoYf$hn#5QI8
dPuCa041mkIUP&THprz?#XmVYp*&&Yr001i7TQdLv

diff --git a/website/locales/es.json b/website/locales/es.json
index 751d4d3..337d24f 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync no está afiliado, respaldado ni asociado con Netflix, Disney+, Amazon, YouTube, Twitch ni ninguna otra plataforma de streaming. Todas las marcas comerciales pertenecen a sus respectivos dueños.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TELEPARTY_TITLE": "KoalaSync frente a Teleparty: ¿qué herramienta de visionado conjunto deberías usar?",
+  "ALT_TELEPARTY_META_DESC": "Una comparativa práctica entre KoalaSync y Teleparty para ver contenido en grupo, analizando aspectos como el chat integrado, la compatibilidad móvil, la sincronización de vídeo en el navegador, los servidores multimedia autohospedados y el uso de código abierto.",
+  "ALT_TELEPARTY_INTRO": "Tanto KoalaSync como Teleparty ayudan a resolver el mismo problema molesto: ver algo juntos sin tener que recurrir a la típica rutina de «3, 2, 1, ¡reproducir!». Simplemente adoptan enfoques diferentes.<br><br>Teleparty es la opción más lógica si buscas un chat integrado o si quieres ver contenido desde un dispositivo móvil. KoalaSync está más orientado a sesiones de visionado en navegadores de escritorio, donde ya te comunicas a través de Discord, Teamspeak u otra aplicación de voz y solo necesitas que la reproducción se mantenga sincronizada.<br><br>La razón principal por la que creé KoalaSync fue la flexibilidad. Está diseñado para funcionar con casi cualquier sitio web que utilice un reproductor de vídeo estándar de navegador, no solo con una lista fija de plataformas. Esto incluye configuraciones autohospedadas como Emby, Jellyfin y Plex, dominios locales o privados y muchas páginas de vídeo convencionales.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Cuándo puede seguir siendo útil Teleparty",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Teleparty puede seguir siendo la mejor opción si prefieres que el chat forme parte de la propia herramienta de visionado. Actualmente, KoalaSync no cuenta con chat integrado; parte de la premisa de que ya te estás comunicando por otro medio, como Discord, Teamspeak, WhatsApp, Signal o una llamada convencional.<br><br>La compatibilidad móvil es otro factor clave. Teleparty dispone de aplicación propia, mientras que KoalaSync, por ahora, solo funciona en navegadores de escritorio. Si quieres sincronizar Netflix en un teléfono o tableta, KoalaSync no es la herramienta adecuada en este momento.<br><br>Por tanto, si el chat y la compatibilidad móvil son tus prioridades, es posible que Teleparty se adapte mejor a tus necesidades.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "Cuándo es mejor usar KoalaSync",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "KoalaSync es una mejor opción si buscas una herramienta flexible para sincronizar la reproducción de vídeo en navegadores de escritorio, en lugar de algo limitado a una lista reducida de plataformas.<br><br>Funciona con casi cualquier sitio web que utilice el reproductor de vídeo estándar del navegador. Esto resulta especialmente útil para Emby, Jellyfin, Plex, servidores multimedia privados, dominios locales o sitios de vídeo más pequeños que las herramientas convencionales de visionado compartido suelen ignorar.<br><br>Además, es gratuito, de código abierto, no requiere crear cuentas y permite el autohospedaje si deseas gestionar tu propio servidor de retransmisión (relay). Lo creé porque buscaba una solución respetuosa con la privacidad que funcionara con mi propia configuración de Emby, y no otra plataforma cerrada limitada a unos pocos grandes servicios de streaming.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "La diferencia principal",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty está concebido principalmente como una herramienta para ver contenido en grupo, con funciones de chat y compatibilidad móvil. KoalaSync, en cambio, funciona más bien como una capa flexible de sincronización de vídeo para navegadores.<br><br>Puede parecer una diferencia menor, pero cambia considerablemente el caso de uso. Si necesitas una aplicación completa para ver contenido en grupo que incluya chat integrado, Teleparty es la opción lógica. Si ya dispones de chat de voz y solo quieres mantener sincronizados los controles de vídeo entre distintos navegadores, KoalaSync es la solución más sencilla.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Limitaciones reales",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync no hace milagros ni pretende ocultar sus limitaciones. Actualmente, solo funciona en navegadores de escritorio; no cuenta con chat integrado ni aplicación móvil.<br><br>La compatibilidad también depende del navegador y del reproductor de vídeo utilizado. Aunque KoalaSync debería funcionar con casi cualquier reproductor estándar de navegador, los sitios web pueden modificar sus reproductores, el comportamiento del DRM o las restricciones del navegador en cualquier momento.<br><br>KoalaSync no tiene ninguna relación con Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex ni ninguna otra marca mencionada aquí. Dichos nombres se utilizan únicamente para ilustrar casos de uso habituales.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Resumen",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Si buscas chat integrado o compatibilidad con dispositivos móviles, Teleparty podría ser la mejor opción. Si prefieres una solución gratuita y de código abierto para sincronizar navegadores de escritorio que funcione con casi cualquier reproductor de vídeo convencional —incluidos servidores multimedia de alojamiento propio como Emby, Jellyfin y Plex—, KoalaSync es probablemente la alternativa más adecuada.",
+  "ALT_SCREEN_TITLE": "KoalaSync frente a compartir pantalla: ¿cuándo es mejor la sincronización de vídeo?",
+  "ALT_SCREEN_META_DESC": "Una comparativa práctica entre KoalaSync y la función de compartir pantalla para noches de cine a distancia, analizando aspectos como el control de reproducción, la calidad de vídeo, la privacidad, los subtítulos y la visualización desde el navegador.",
+  "ALT_SCREEN_INTRO": "Compartir pantalla funciona y, sinceramente, a veces es suficiente. Una persona comparte su pantalla, las demás la ven y listo.<br><br>Sin embargo, para sesiones de cine más largas o para ver episodios en grupo, puede resultar molesto. La calidad del vídeo depende de la velocidad de subida, la CPU y el navegador de quien comparte, así como de la compresión que apliquen aplicaciones como Discord, Teamspeak, Zoom u otras plataformas de videollamada. Además, solo una persona tiene el control real de la reproducción.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Cuándo basta con compartir pantalla",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Compartir pantalla es una buena opción si buscas una configuración lo más rápida posible. Si solo una persona tiene acceso al vídeo o si a todos les parece bien que una sola persona controle la reproducción, la pausa y el avance o retroceso, puede que sea la opción más sencilla.<br><br>También tiene sentido cuando la calidad no es una prioridad, cuando nadie necesita sus propios subtítulos o ajustes de audio, y cuando la persona que comparte se siente cómoda mostrando esa ventana del navegador o su pantalla.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Cuando compartir pantalla resulta molesto",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "La mayor desventaja es que no todos ven el contenido en su propio reproductor. Una persona transmite su pantalla y el resto solo ve esa transmisión.<br><br>Esto puede implicar una peor calidad de video, audio comprimido, retraso en la reproducción y menos control para los demás. Además, los subtítulos y las pistas de audio serán los que haya elegido la persona que comparte.<br><br>También está el aspecto de la privacidad. Si cambias de ventana o de pestaña, los demás podrían ver brevemente las pestañas de tu navegador, tu correo electrónico, Reddit, chats u otra información privada. Puedes evitar esto usando una ventana independiente, pero es algo que debes tener en cuenta.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Por qué KoalaSync puede resultar más limpio",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync no transmite tu pantalla. Cada persona ve el video localmente en su propio navegador, y KoalaSync solo sincroniza las acciones de reproducción, como iniciar, pausar y avanzar o retroceder.<br><br>Esto significa que todos pueden usar la pantalla completa en su propio dispositivo, utilizar sus propios ajustes de subtítulos o audio (si el reproductor lo permite) y mantener el chat de voz separado en Discord, Teamspeak o cualquier otra aplicación de llamadas.<br><br>Para las noches de cine, esto puede resultar mucho más limpio que tener a una persona transmitiendo su pantalla. Es especialmente útil para configuraciones basadas en navegador como Emby, Jellyfin, Plex, archivos locales abiertos en el navegador, dominios privados u otros sitios web que utilicen reproductores de video estándar del navegador.",
+  "ALT_SCREEN_LIMITS_TITLE": "Limitaciones reales",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync no sustituye a una llamada de voz. Si quieres hablar mientras ves el contenido, puedes seguir usando Discord, Teamspeak, Signal, WhatsApp o cualquier otra herramienta que utilices habitualmente.<br><br>Además, cada participante necesita acceder al vídeo o a la página web desde su propio dispositivo. KoalaSync no elude suscripciones, inicios de sesión, DRM, restricciones regionales ni las normas de las plataformas.<br><br>Actualmente solo funciona en navegadores de escritorio, no incluye funciones de chat o voz, y la compatibilidad depende siempre del navegador y del reproductor de vídeo.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Resumen",
+  "ALT_SCREEN_SUMMARY_BODY": "Compartir pantalla es la opción más sencilla cuando buscas algo rápido y no te preocupa demasiado la calidad, la privacidad o el control individual. KoalaSync es una mejor alternativa cuando cada persona debe ver el contenido localmente en su propio navegador y se busca una experiencia que realmente se asemeje a verlo juntos.",
+  "ALT_TRY_KOALASYNC": "Prueba KoalaSync"
 }
diff --git a/website/locales/fr.json b/website/locales/fr.json
index fedf324..45948a6 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync n'est pas affilié à Netflix, Disney+, Amazon, YouTube, Twitch ou toute autre plateforme de streaming. Toutes les marques déposées appartiennent à leurs détenteurs respectifs.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TELEPARTY_TITLE": "KoalaSync vs Teleparty : quel outil de visionnage en groupe choisir ?",
+  "ALT_TELEPARTY_META_DESC": "Une comparaison pratique entre KoalaSync et Teleparty pour le visionnage en groupe : chat intégré, compatibilité mobile, synchronisation vidéo via navigateur, serveurs multimédias auto-hébergés et nature open-source.",
+  "ALT_TELEPARTY_INTRO": "KoalaSync et Teleparty répondent tous deux au même problème agaçant : regarder quelque chose ensemble sans avoir à passer par le rituel du « 3, 2, 1, lecture ». Ils adoptent simplement des approches différentes.<br><br>Teleparty est la solution idéale si vous souhaitez un chat intégré ou si vous voulez regarder du contenu sur mobile. KoalaSync est davantage conçu pour le visionnage sur navigateur (PC/Mac) lorsque vous communiquez déjà via Discord, Teamspeak ou un autre service d'appel vocal, et que vous voulez simplement que la lecture reste synchronisée.<br><br>La raison principale pour laquelle j'ai créé KoalaSync est la flexibilité. L'outil est conçu pour fonctionner avec presque tous les sites web utilisant un lecteur vidéo standard, et non avec une liste fixe de plateformes. Cela inclut les installations auto-hébergées comme Emby, Jellyfin et Plex, les domaines locaux ou privés, ainsi que de nombreuses pages vidéo classiques sur navigateur.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Quand Teleparty reste une bonne option",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Teleparty peut s'avérer être le meilleur choix si vous souhaitez que le chat soit directement intégré à l'outil de visionnage. KoalaSync ne propose pas de chat intégré pour le moment ; il part du principe que vous communiquez déjà par ailleurs, via Discord, Teamspeak, WhatsApp, Signal ou un appel classique.<br><br>L'aspect mobile constitue une autre raison majeure. Teleparty dispose d'une application, alors que KoalaSync ne fonctionne actuellement que sur les navigateurs de bureau. Si vous souhaitez synchroniser Netflix sur un téléphone ou une tablette, KoalaSync n'est pas l'outil adapté pour l'instant.<br><br>Ainsi, si le chat et la compatibilité mobile sont vos priorités, Teleparty pourrait tout simplement mieux convenir à votre configuration.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "Quand choisir KoalaSync",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "KoalaSync est plus adapté si vous recherchez un outil flexible de synchronisation vidéo pour navigateur de bureau, plutôt qu'une solution limitée à une courte liste de plateformes.<br><br>Il fonctionne avec presque tous les sites web utilisant un lecteur vidéo standard de navigateur. C'est particulièrement utile pour Emby, Jellyfin, Plex, les serveurs multimédias privés, les domaines locaux ou les sites vidéo plus modestes que les outils classiques de visionnage en groupe ignorent généralement.<br><br>De plus, c'est un outil gratuit et open source qui ne nécessite pas de compte et peut être auto-hébergé si vous souhaitez gérer votre propre relais. Je l'ai créé parce que je voulais une solution respectueuse de la vie privée compatible avec ma propre installation Emby, et non une plateforme fermée supplémentaire réservée à quelques grands sites de streaming.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "La différence principale",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty est avant tout un outil de visionnage en groupe incluant une messagerie et une prise en charge mobile. KoalaSync se présente davantage comme une couche de synchronisation flexible pour la vidéo sur navigateur.<br><br>Cela peut sembler être un détail, mais cela change considérablement l'usage. Si vous avez besoin d'une application complète de visionnage en groupe avec messagerie intégrée, Teleparty est tout indiqué. Si vous disposez déjà d'un système de discussion vocale et que vous souhaitez simplement synchroniser les commandes vidéo entre différents navigateurs, KoalaSync est la solution la plus simple.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Limites en toute transparence",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync n'est pas magique et ne cherche pas à dissimuler ses limites. Actuellement, il ne fonctionne que sur les navigateurs de bureau. Il ne dispose ni de messagerie intégrée ni d'application mobile.<br><br>La compatibilité dépend également du navigateur et du lecteur vidéo. KoalaSync devrait fonctionner avec presque tous les lecteurs vidéo standard, mais les sites web peuvent modifier leurs lecteurs, la gestion des DRM ou les restrictions du navigateur à tout moment.<br><br>KoalaSync n'est affilié ni à Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex, ni à aucune autre marque mentionnée ici. Ces noms sont utilisés uniquement pour illustrer des cas d'utilisation courants.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Résumé",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Si vous recherchez une fonction de chat intégrée ou une prise en charge mobile, Teleparty pourrait être la meilleure option. Si vous préférez une solution gratuite et open source de synchronisation via navigateur (sur ordinateur) compatible avec presque tous les lecteurs vidéo classiques — y compris les serveurs multimédias auto-hébergés comme Emby, Jellyfin et Plex —, alors KoalaSync est probablement le choix idéal.",
+  "ALT_SCREEN_TITLE": "KoalaSync vs partage d'écran : quand la synchronisation vidéo est-elle préférable ?",
+  "ALT_SCREEN_META_DESC": "Une comparaison pratique entre KoalaSync et le partage d'écran pour les soirées cinéma à distance : contrôle de la lecture, qualité vidéo, confidentialité, sous-titres et visionnage via navigateur.",
+  "ALT_SCREEN_INTRO": "Le partage d'écran fonctionne et, honnêtement, cela suffit parfois. Une personne partage son écran, les autres regardent, et le tour est joué.<br><br>Cependant, pour des soirées cinéma plus longues ou pour regarder des épisodes ensemble, cela peut devenir contraignant. La qualité vidéo dépend de la vitesse d'envoi (upload), du processeur et du navigateur de la personne qui partage, ainsi que de la compression appliquée par Discord, Teamspeak, Zoom ou toute autre application d'appel. De plus, une seule personne contrôle réellement la lecture.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Quand le partage d'écran suffit",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Le partage d'écran est une bonne solution lorsque vous souhaitez une mise en place ultra-rapide. Si une seule personne a accès à la vidéo ou si tout le monde accepte qu'une seule personne contrôle la lecture, la pause et la navigation dans la vidéo, c'est peut-être l'option la plus simple.<br><br>C'est aussi une solution pertinente lorsque la qualité n'est pas une priorité, que personne n'a besoin de paramètres de sous-titres ou audio personnalisés, et que la personne qui partage l'écran est à l'aise à l'idée de montrer sa fenêtre de navigateur ou son écran.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Les inconvénients du partage d'écran",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "Le principal inconvénient est que les participants ne regardent pas la vidéo via leur propre lecteur. Une personne diffuse son écran, et tous les autres ne voient que ce flux.<br><br>Cela peut entraîner une qualité vidéo moindre, une compression audio, un décalage de lecture et une perte de contrôle pour les autres spectateurs. De plus, les sous-titres et les pistes audio sont imposés par la personne qui partage.<br><br>Il y a aussi la question de la confidentialité. Si vous changez de fenêtre ou d'onglet, les autres peuvent brièvement voir vos onglets, vos e-mails, Reddit, vos discussions ou d'autres éléments privés. Vous pouvez contourner ce problème en utilisant une fenêtre séparée, mais c'est un aspect à prendre en compte.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Pourquoi KoalaSync offre une expérience plus fluide",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync ne diffuse pas votre écran. Chacun regarde la vidéo localement dans son propre navigateur, et KoalaSync se contente de synchroniser les actions de lecture telles que le lancement, la pause et la navigation dans la vidéo.<br><br>Ainsi, chacun peut passer en plein écran sur son appareil, utiliser ses propres paramètres de sous-titres ou audio (si le lecteur le permet) et gérer la discussion vocale séparément via Discord, Teamspeak ou un autre service d'appel.<br><br>Pour les soirées cinéma, cette approche est souvent plus agréable que la diffusion d'écran par une seule personne. C'est particulièrement utile pour les solutions basées sur un navigateur comme Emby, Jellyfin, Plex, les fichiers locaux ouverts dans le navigateur, les domaines privés ou tout autre site web utilisant des lecteurs vidéo standard.",
+  "ALT_SCREEN_LIMITS_TITLE": "Limites à connaître",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync ne remplace pas un appel vocal. Si vous souhaitez discuter tout en regardant, vous continuez à utiliser Discord, Teamspeak, Signal, WhatsApp ou tout autre outil habituel.<br><br>Chacun doit également pouvoir accéder à la vidéo ou à la page depuis son propre appareil. KoalaSync ne contourne ni les abonnements, ni les identifiants, ni les DRM, ni les restrictions géographiques ou les règles des plateformes.<br><br>L'outil fonctionne actuellement uniquement sur les navigateurs de bureau, ne dispose pas de fonction de chat ou de voix intégrée, et la compatibilité dépend toujours du navigateur et du lecteur vidéo utilisé.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Résumé",
+  "ALT_SCREEN_SUMMARY_BODY": "Le partage d'écran est la solution la plus simple si vous cherchez une méthode rapide sans accorder une grande importance à la qualité, à la confidentialité ou au contrôle individuel. KoalaSync est plus adapté lorsque chaque participant doit visionner le contenu localement dans son propre navigateur, pour une expérience se rapprochant davantage d'un véritable visionnage en commun.",
+  "ALT_TRY_KOALASYNC": "Essayer KoalaSync"
 }
diff --git a/website/locales/it.json b/website/locales/it.json
index ff16b81..757c64c 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync non è affiliato a Netflix, YouTube o altre piattaforme. I marchi appartengono ai rispettivi proprietari.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TELEPARTY_TITLE": "KoalaSync vs Teleparty: quale strumento scegliere per le watch party?",
+  "ALT_TELEPARTY_META_DESC": "Un confronto pratico tra KoalaSync e Teleparty per le watch party: chat integrata, supporto mobile, sincronizzazione video nel browser, server multimediali self-hosted e natura open-source.",
+  "ALT_TELEPARTY_INTRO": "Sia KoalaSync che Teleparty risolvono lo stesso fastidioso problema: guardare qualcosa insieme senza dover ricorrere alla classica procedura del '3, 2, 1, via'. Semplicemente, adottano approcci diversi.<br><br>Teleparty è la scelta ideale se cerchi una chat integrata o se vuoi guardare i contenuti da dispositivo mobile. KoalaSync è più indicato per le watch party su browser desktop, quando stai già comunicando tramite Discord, Teamspeak o un'altra chiamata vocale e vuoi semplicemente mantenere sincronizzata la riproduzione.<br><br>Il motivo principale per cui ho creato KoalaSync è la flessibilità. È progettato per funzionare con quasi tutti i siti web che utilizzano un normale lettore video del browser, non solo con una lista predefinita di piattaforme. Ciò include configurazioni self-hosted come Emby, Jellyfin e Plex, domini locali o privati e molte pagine web che ospitano video.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Quando Teleparty può ancora essere la scelta giusta",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Teleparty può rivelarsi la scelta migliore se desideri che la chat sia parte integrante dello strumento stesso per la watch party. Attualmente KoalaSync non dispone di una chat integrata; presuppone che tu stia già comunicando altrove, ad esempio su Discord, Teamspeak, WhatsApp, Signal o tramite una normale chiamata.<br><br>Il supporto mobile è un altro fattore chiave. Teleparty offre un'app dedicata, mentre KoalaSync funziona al momento solo su browser desktop. Se vuoi sincronizzare Netflix su smartphone o tablet, KoalaSync non è lo strumento adatto in questo momento.<br><br>Quindi, se la chat e il supporto mobile sono gli aspetti a cui tieni di più, Teleparty potrebbe adattarsi meglio alle tue esigenze.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "Quando KoalaSync è la scelta ideale",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "KoalaSync è la soluzione ideale se cerchi uno strumento flessibile per sincronizzare la riproduzione video tra browser desktop, anziché una soluzione vincolata a una lista ristretta di piattaforme.<br><br>Funziona con quasi tutti i siti web che utilizzano i normali lettori video dei browser. È particolarmente utile per Emby, Jellyfin, Plex, server multimediali privati, domini locali o siti video minori che solitamente vengono ignorati dai classici strumenti per le sessioni di visione condivisa.<br><br>È inoltre gratuito, open source, non richiede la creazione di account e può essere ospitato autonomamente se desideri gestire il tuo relay. L'ho creato perché volevo una soluzione rispettosa della privacy che funzionasse con la mia configurazione Emby, non l'ennesima piattaforma chiusa limitata a pochi grandi servizi di streaming.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "La differenza principale",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty è concepito principalmente come strumento per la visione condivisa, completo di chat e supporto mobile. KoalaSync, invece, agisce più come un livello flessibile di sincronizzazione per i video riprodotti nel browser.<br><br>Può sembrare una differenza da poco, ma cambia notevolmente le modalità d'uso. Se cerchi un'applicazione completa per la visione condivisa con chat integrata, Teleparty è la scelta giusta. Se invece disponi già di una chat vocale e vuoi semplicemente mantenere sincronizzati i controlli video tra diversi browser, KoalaSync è la soluzione più semplice ed efficace.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Limiti dichiarati apertamente",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync non fa miracoli e non cerca di nascondere i propri limiti. Attualmente funziona solo su browser desktop; non dispone di chat integrata né di un'app per dispositivi mobili.<br><br>La compatibilità dipende anche dal browser e dal lettore video utilizzato. KoalaSync dovrebbe funzionare con quasi tutti i normali lettori video dei browser, ma i siti web possono modificare in qualsiasi momento i propri lettori, la gestione dei DRM o le restrizioni del browser.<br><br>KoalaSync non è affiliato a Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex o qualsiasi altro marchio qui menzionato. I nomi sono utilizzati esclusivamente per illustrare i tipici scenari di utilizzo.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Riepilogo",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Se cerchi una chat integrata o il supporto per dispositivi mobili, Teleparty potrebbe essere la scelta più adatta. Se invece preferisci una soluzione gratuita e open-source per la sincronizzazione tra browser desktop, compatibile con quasi tutti i comuni lettori video — inclusi i media server self-hosted come Emby, Jellyfin e Plex — KoalaSync è probabilmente l'opzione migliore.",
+  "ALT_SCREEN_TITLE": "KoalaSync vs condivisione schermo: quando è meglio la sincronizzazione video?",
+  "ALT_SCREEN_META_DESC": "Un confronto pratico tra KoalaSync e la condivisione dello schermo per serate film a distanza, analizzando controllo della riproduzione, qualità video, privacy, sottotitoli e visione tramite browser.",
+  "ALT_SCREEN_INTRO": "La condivisione dello schermo funziona e, a dire il vero, a volte è sufficiente. Una persona condivide il proprio schermo, le altre guardano e il gioco è fatto.<br><br>Tuttavia, per serate film più lunghe o per guardare insieme degli episodi, può diventare scomoda. La qualità video dipende dalla velocità di upload, dalla CPU e dal browser di chi condivide, oltre che dalla compressione applicata da app come Discord, Teamspeak, Zoom o altre piattaforme di chiamata. Inoltre, solo una persona ha il controllo effettivo della riproduzione.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Quando la condivisione dello schermo è sufficiente",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "La condivisione dello schermo è una buona soluzione quando si cerca la configurazione più rapida possibile. Se solo una persona ha accesso al video o se a tutti va bene che una sola persona controlli la riproduzione, la pausa e lo scorrimento del video, potrebbe essere l'opzione più semplice.<br><br>È una soluzione valida anche quando la qualità non è una priorità assoluta, quando nessuno ha bisogno di impostazioni personalizzate per sottotitoli o audio e quando chi condivide lo schermo si sente a proprio agio nel mostrare quella specifica finestra del browser o l'intero schermo.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Quando la condivisione schermo diventa scomoda",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "Lo svantaggio principale è che non tutti guardano il video tramite il proprio lettore. Una persona trasmette il proprio schermo e tutti gli altri vedono solo quel flusso video.<br><br>Ciò può comportare una qualità video inferiore, audio compresso, ritardi nella riproduzione e un controllo limitato per gli altri partecipanti. Anche i sottotitoli e le tracce audio sono quelli scelti da chi effettua la condivisione.<br><br>C'è poi l'aspetto della privacy. Se cambi finestra o scheda, gli altri potrebbero vedere brevemente le schede del tuo browser, le email, Reddit, le chat o altri contenuti privati. È possibile aggirare il problema usando una finestra separata, ma è comunque un aspetto da tenere a mente.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Perché KoalaSync offre un'esperienza più pulita",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync non trasmette il tuo schermo. Ognuno guarda il video localmente sul proprio browser e KoalaSync si limita a sincronizzare le azioni di riproduzione, come avvio, pausa e scorrimento.<br><br>Questo permette a ciascuno di utilizzare la modalità a schermo intero sul proprio dispositivo, di impostare i sottotitoli o l'audio secondo le proprie preferenze (se il lettore lo consente) e di mantenere separata la chat vocale su Discord, Teamspeak o altre piattaforme.<br><br>Per le serate film, questa soluzione risulta molto più ordinata rispetto alla condivisione dello schermo da parte di una sola persona. È particolarmente utile per configurazioni basate su browser come Emby, Jellyfin, Plex, file locali aperti nel browser, domini privati o altri siti web dotati di lettori video standard.",
+  "ALT_SCREEN_LIMITS_TITLE": "Limiti reali",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync non sostituisce una chiamata vocale. Se volete parlare mentre guardate il contenuto, potete continuare a usare Discord, Teamspeak, Signal, WhatsApp o qualsiasi altro strumento abituale.<br><br>Ciascun partecipante deve inoltre poter accedere al video o alla pagina dal proprio dispositivo. KoalaSync non aggira abbonamenti, accessi, DRM, restrizioni geografiche o regole delle piattaforme.<br><br>Al momento è utilizzabile solo tramite browser desktop, non dispone di funzioni di chat o voce integrate e la compatibilità dipende sempre dal browser e dal lettore video.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Riepilogo",
+  "ALT_SCREEN_SUMMARY_BODY": "La condivisione dello schermo è l'opzione più semplice quando si cerca una soluzione rapida e non si dà molta importanza alla qualità, alla privacy o al controllo individuale. KoalaSync è la scelta ideale quando tutti devono guardare il contenuto localmente sul proprio browser, offrendo un'esperienza che ricorda più da vicino la visione condivisa reale.",
+  "ALT_TRY_KOALASYNC": "Prova KoalaSync"
 }
diff --git a/website/locales/ja.json b/website/locales/ja.json
index 6678f89..613f319 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSyncは、Netflix、Disney+、Amazon、YouTube、Twitch、またはその他のストリーミングプラットフォームと提携、承認、または関連付けられているものではありません。すべての商標はそれぞれの所有者に帰属します。",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+    "ALT_TELEPARTY_TITLE": "KoalaSync vs Teleparty：どちらのウォッチパーティツールを使うべき？",
+  "ALT_TELEPARTY_META_DESC": "ウォッチパーティ向けツール、KoalaSyncとTelepartyの実践的比較。チャット機能、モバイル対応、ブラウザでの動画同期、セルフホスト型メディアサーバー、オープンソース利用といった観点から解説します。",
+  "ALT_TELEPARTY_INTRO": "KoalaSyncとTelepartyは、どちらも「3、2、1、再生！」と声を掛け合う手間をかけずに、一緒に動画を楽しむという共通の課題を解決してくれます。ただ、そのアプローチは異なります。<br><br>チャット機能が組み込まれていることや、モバイル端末で視聴できることを重視するなら、Telepartyが最適です。一方、KoalaSyncは、DiscordやTeamSpeakなどで既に通話しながら、ブラウザ上で動画の再生タイミングだけを同期させたいという、デスクトップブラウザでの利用に適しています。<br><br>私がKoalaSyncを開発した主な理由は「柔軟性」です。特定のプラットフォームだけでなく、一般的なブラウザ用動画プレーヤーを使用するほぼすべてのウェブサイトで動作するように設計されています。これには、Emby、Jellyfin、Plexといったセルフホスト環境や、ローカル/プライベートドメイン、そしてブラウザ上の一般的な動画ページなどが含まれます。",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Telepartyが適しているケース",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "ウォッチパーティツール自体にチャット機能が組み込まれていることを望むなら、Telepartyの方が良い選択肢となるでしょう。KoalaSyncには現在、チャット機能が搭載されていません。Discord、TeamSpeak、WhatsApp、Signal、あるいは通常の通話など、別の手段で既に会話していることを前提としています。<br><br>もう一つの大きな理由はモバイル対応です。Telepartyにはアプリがありますが、KoalaSyncは現時点ではデスクトップブラウザでしか動作しません。スマートフォンやタブレットでNetflixを同期再生したい場合、今のところKoalaSyncは適していません。<br><br>つまり、チャット機能やモバイル対応を何よりも重視するのであれば、Telepartyの方があなたの利用スタイルに合っているかもしれません。",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "KoalaSyncが適している場合",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "特定のプラットフォームに縛られるツールではなく、柔軟性の高いデスクトップブラウザ用同期ツールをお探しなら、KoalaSyncが適しています。<br><br>一般的なブラウザの動画プレーヤーを使用するほぼすべてのウェブサイトで動作します。これは特に、Emby、Jellyfin、Plex、プライベートメディアサーバー、ローカルドメイン、あるいは従来のウォッチパーティツールが見落としがちな小規模な動画サイトなどで役立ちます。<br><br>また、無料かつオープンソースであり、アカウント登録も不要です。独自のリレーサーバーを運用したい場合は、セルフホストも可能です。私がこのツールを開発したのは、一部の大手ストリーミングサイト専用の閉鎖的なプラットフォームではなく、自分のEmby環境で動作し、プライバシーに配慮したツールが欲しかったからです。",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "主な違い",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Telepartyは、チャットやモバイル対応を備えた「ウォッチパーティ（同時視聴）」向け製品です。一方、KoalaSyncは、ブラウザ上の動画再生を同期させるための、より柔軟な同期レイヤーと言えます。<br><br>些細な違いに聞こえるかもしれませんが、これによって利用シーンが大きく変わります。チャット機能が組み込まれた総合的なウォッチパーティアプリが必要なら、Telepartyが適しています。すでにボイスチャット環境があり、単にブラウザ間で動画の再生状態を同期させたいだけであれば、よりシンプルなKoalaSyncが適しています。",
+  "ALT_TELEPARTY_LIMITS_TITLE": "制限事項について",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSyncは魔法のツールではなく、その制限を隠そうともしていません。現時点ではデスクトップブラウザでのみ動作し、チャット機能やモバイルアプリは搭載されていません。<br><br>互換性はブラウザや動画プレーヤーにも依存します。KoalaSyncは一般的なブラウザの動画プレーヤーのほとんどで動作するはずですが、ウェブサイト側がプレーヤー、DRMの挙動、あるいはブラウザへの制限などをいつでも変更する可能性があります。<br><br>KoalaSyncは、Netflix、Disney+、Prime Video、YouTube、Teleparty、Emby、Jellyfin、Plex、その他ここで言及されているブランドとは一切関係ありません。これらの名称は、一般的な利用シーンを説明するために使用されているに過ぎません。",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "概要",
+  "ALT_TELEPARTY_SUMMARY_BODY": "チャット機能やモバイル対応を重視するなら、Telepartyの方が適しているかもしれません。一方、無料かつオープンソースで、デスクトップブラウザでの同期が可能、さらにEmby、Jellyfin、Plexといったセルフホスト型メディアサーバーを含む、一般的な動画プレーヤーのほとんどで動作するツールをお探しなら、KoalaSyncの方が適しているでしょう。",
+  "ALT_SCREEN_TITLE": "KoalaSyncと画面共有：動画同期の方が優れているのはどんな時？",
+  "ALT_SCREEN_META_DESC": "リモートでの映画鑑賞会におけるKoalaSyncと画面共有の実践的な比較。再生制御、画質、プライバシー、字幕、ブラウザでの視聴といった観点から解説します。",
+  "ALT_SCREEN_INTRO": "画面共有は有効な手段であり、正直なところ、それで十分な場合もあります。一人が画面を共有し、他の全員がそれを見るだけで済みますから。<br><br>しかし、長時間の映画鑑賞やシリーズ作品を一緒に見るとなると、煩わしさを感じることもあります。画質は、共有者のアップロード速度、CPU、ブラウザ、そしてDiscord、TeamSpeak、Zoomなどの通話アプリによる圧縮処理に左右されます。また、再生を実際に操作できるのは一人のみです。",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "画面共有で十分な場合",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "とにかく手早く準備を済ませたいなら、画面共有で問題ありません。もし一人だけが動画にアクセスできる場合……あるいは、一人が再生・一時停止・シーク（再生位置の移動）を操作することに全員が納得しているなら、それが最もシンプルな選択肢かもしれません。<br><br>画質がそれほど重要ではなく、個別の字幕や音声設定を必要とする人がおらず、かつ共有者がブラウザウィンドウや画面をそのまま見せても構わない場合には、理にかなった方法と言えます。",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "画面共有が煩わしくなる場合",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "最大の欠点は、全員がそれぞれのプレイヤーで視聴するわけではないという点です。一人が画面をストリーミングし、他の全員はそのストリーム映像を見るだけになります。<br><br>その結果、画質の低下、音声の圧縮、再生の遅延が生じたり、他の参加者が操作できる範囲が狭まったりする可能性があります。字幕や音声トラックも、共有者が選択したものに固定されます。<br><br>プライバシーの問題もあります。ウィンドウやタブを切り替える際、ブラウザのタブ、メール、Reddit、チャット、その他の個人的な情報が一時的に見えてしまう可能性があります。別のウィンドウを使うことで回避はできますが、やはり考慮すべき点ではあります。",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "KoalaSyncがすっきり感じられる理由",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSyncは画面をストリーミングしません。全員がそれぞれのブラウザでローカルに動画を視聴し、KoalaSyncは再生・一時停止・シークといった操作の同期のみを行います。<br><br>つまり、全員が自分のデバイスでフルスクリーン表示を利用したり、プレイヤーが対応していれば個別の字幕や音声設定を使ったりできるほか、DiscordやTeamSpeakなどの通話ツールで音声チャットを別に行うことも可能です。<br><br>映画鑑賞会などでは、一人が画面を配信するよりも、はるかにすっきりとした体験になります。特に、Emby、Jellyfin、Plex、ブラウザで開いたローカルファイル、プライベートドメイン、あるいは一般的なブラウザ用動画プレイヤーを備えたウェブサイトなど、ブラウザベースの環境で利用する場合に非常に便利です。",
+  "ALT_SCREEN_LIMITS_TITLE": "正直なところ、制限事項も",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSyncは音声通話の代わりになるものではありません。視聴しながら会話をする場合は、Discord、TeamSpeak、Signal、WhatsAppなど、普段お使いのツールをそのまま利用します。<br><br>また、参加者全員がそれぞれのデバイスでその動画やページにアクセスできる必要があります。KoalaSyncは、サブスクリプション、ログイン、DRM（デジタル著作権管理）、地域制限、プラットフォームの利用規約などを回避するものではありません。<br><br>現在はデスクトップ版ブラウザのみに対応しており、チャットや音声通話機能は内蔵されていません。また、動作の可否は使用するブラウザや動画プレーヤーに依存します。",
+  "ALT_SCREEN_SUMMARY_TITLE": "概要",
+  "ALT_SCREEN_SUMMARY_BODY": "画質やプライバシー、個別の操作性をあまり気にせず、手軽に済ませたい場合は「画面共有」が最も簡単な選択肢です。一方、参加者それぞれが自身のブラウザで動画を再生し、実際に同じ空間で一緒に視聴しているような感覚を重視するなら、KoalaSyncの方が適しています。",
+  "ALT_TRY_KOALASYNC": "KoalaSyncを試す"
 }
diff --git a/website/locales/ko.json b/website/locales/ko.json
index 4c48a62..187ab39 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync는 Netflix, Disney+, Amazon, YouTube, Twitch 또는 기타 스트리밍 플랫폼과 제휴, 보증 또는 연관되어 있지 않습니다. 모든 상표는 해당 소유자의 재산입니다.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+    "ALT_TELEPARTY_TITLE": "KoalaSync 대 Teleparty: 어떤 '워치 파티(watch party)' 도구를 선택해야 할까요?",
+  "ALT_TELEPARTY_META_DESC": "워치 파티를 위한 KoalaSync와 Teleparty의 실용적 비교: 내장 채팅, 모바일 지원, 브라우저 영상 동기화, 자체 호스팅 미디어 서버 및 오픈 소스 활용 여부 등을 다룹니다.",
+  "ALT_TELEPARTY_INTRO": "KoalaSync와 Teleparty는 모두 '3, 2, 1, 재생' 같은 번거로운 절차 없이 함께 영상을 시청할 수 있게 해준다는 점에서 같은 문제를 해결해 줍니다. 다만 접근 방식에는 차이가 있습니다.<br><br>내장 채팅 기능이 필요하거나 모바일에서 시청하고 싶다면 Teleparty가 가장 합리적인 선택입니다. 반면 KoalaSync는 Discord, Teamspeak 또는 기타 음성 통화 서비스를 통해 이미 대화를 나누고 있으면서, 단순히 영상 재생만 동기화하고 싶은 데스크톱 브라우저 기반의 워치 파티에 더 적합합니다.<br><br>제가 KoalaSync를 개발한 주된 이유는 유연성 때문입니다. 특정 플랫폼 목록에만 국한되지 않고, 일반적인 브라우저 비디오 플레이어를 사용하는 거의 모든 웹사이트에서 작동하도록 설계되었습니다. 여기에는 Emby, Jellyfin, Plex와 같은 자체 호스팅 환경, 로컬/비공개 도메인, 그리고 브라우저상의 수많은 일반 동영상 페이지가 포함됩니다.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Teleparty가 여전히 좋은 선택이 될 수 있는 경우",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "워치 파티 도구 자체에 채팅 기능이 포함되기를 원한다면 Teleparty가 더 나은 선택일 수 있습니다. KoalaSync에는 현재 내장 채팅 기능이 없습니다. Discord, Teamspeak, WhatsApp, Signal 또는 일반 통화 등 다른 수단을 통해 이미 대화하고 있다는 것을 전제로 하기 때문입니다.<br><br>모바일 지원 여부도 중요한 이유 중 하나입니다. Teleparty는 전용 앱을 제공하지만, KoalaSync는 현재 데스크톱 브라우저에서만 작동합니다. 스마트폰이나 태블릿에서 Netflix 영상을 동기화하고 싶다면, 현재로서는 KoalaSync가 적합한 도구가 아닙니다.<br><br>따라서 채팅과 모바일 지원이 가장 중요한 요소라면, Teleparty가 여러분의 환경에 더 잘 맞을 것입니다.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "KoalaSync가 더 적합한 경우",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "지원 플랫폼이 제한적인 도구 대신 유연한 데스크톱 브라우저 동기화 도구를 원하신다면 KoalaSync가 더 나은 선택입니다.<br><br>일반적인 브라우저 비디오 플레이어를 사용하는 거의 모든 웹사이트에서 작동합니다. 이는 특히 Emby, Jellyfin, Plex, 개인 미디어 서버, 로컬 도메인 또는 기존 '워치 파티(watch party)' 도구들이 흔히 지원하지 않는 소규모 동영상 사이트에서 유용합니다.<br><br>또한 무료이자 오픈 소스이며, 계정 생성도 필요하지 않습니다. 직접 릴레이 서버를 운영하고 싶다면 자체 호스팅도 가능합니다. 저는 소수의 대형 스트리밍 사이트만을 위한 폐쇄적인 플랫폼이 아니라, 제 Emby 환경에서도 잘 작동하면서 개인정보 보호를 중시하는 도구를 만들고 싶어 이 프로그램을 개발했습니다.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "주요 차이점",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty는 채팅과 모바일 지원 기능을 갖춘 '워치 파티' 서비스에 가깝습니다. 반면 KoalaSync는 브라우저 비디오를 위한 유연한 동기화 도구(레이어)에 가깝습니다.<br><br>사소한 차이처럼 들릴 수 있지만, 실제 사용 방식에는 큰 차이가 있습니다. 채팅 기능이 포함된 종합적인 워치 파티 앱이 필요하다면 Teleparty가 적합합니다. 하지만 이미 음성 채팅 수단이 있고 단순히 브라우저 간 비디오 재생 상태만 동기화하고 싶다면, 더 간편한 KoalaSync가 알맞은 선택입니다.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "솔직하게 밝히는 한계점",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync는 마법 같은 도구가 아니며, 그 한계를 숨기지도 않습니다. 현재 데스크톱 브라우저에서만 작동하며, 자체 채팅 기능이나 모바일 앱은 없습니다.<br><br>호환성은 브라우저와 비디오 플레이어의 영향을 받습니다. KoalaSync는 일반적인 브라우저 비디오 플레이어라면 대부분 작동하지만, 웹사이트 측에서 플레이어, DRM 방식, 또는 브라우저 관련 제한 사항을 언제든지 변경할 수 있습니다.<br><br>KoalaSync는 Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex 또는 여기에 언급된 다른 어떤 브랜드와도 제휴 관계가 아닙니다. 해당 명칭들은 단지 일반적인 사용 사례를 설명하기 위해 사용되었습니다.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "요약",
+  "ALT_TELEPARTY_SUMMARY_BODY": "내장 채팅이나 모바일 지원 기능이 필요하다면 Teleparty가 더 적합할 수 있습니다. 반면, Emby, Jellyfin, Plex와 같은 자체 호스팅 미디어 서버를 포함해 거의 모든 일반적인 동영상 플레이어와 호환되는 무료 오픈 소스 데스크톱 브라우저 동기화 도구를 원하신다면 KoalaSync가 더 나은 선택일 것입니다.",
+  "ALT_SCREEN_TITLE": "KoalaSync 대 화면 공유: 동영상 동기화가 더 나은 경우는 언제일까요?",
+  "ALT_SCREEN_META_DESC": "원격 영화 감상, 재생 제어, 화질, 개인정보 보호, 자막 및 브라우저 기반 시청 측면에서 KoalaSync와 화면 공유를 실용적으로 비교해 봅니다.",
+  "ALT_SCREEN_INTRO": "화면 공유도 훌륭한 방법이며, 솔직히 때로는 그것만으로도 충분합니다. 한 사람이 화면을 공유하고 나머지는 시청하기만 하면 되니까요.<br><br>하지만 긴 영화를 보거나 여러 에피소드를 함께 시청할 때는 다소 번거로울 수 있습니다. 화질은 화면을 공유하는 사람의 업로드 속도, CPU, 브라우저, 그리고 Discord, Teamspeak, Zoom 등의 통화 앱이 적용하는 압축 방식에 따라 달라집니다. 또한, 재생을 실제로 제어할 수 있는 사람도 한 명뿐입니다.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "화면 공유로 충분한 경우",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "가장 빠르게 준비를 마치고 싶을 때는 화면 공유가 좋은 선택입니다. 만약 한 사람만 동영상에 접근할 수 있거나...\"또는 한 사람이 재생, 일시 정지, 탐색(seek)을 제어하는 방식에 모두가 동의한다면, 이것이 가장 간단한 선택지가 될 수 있습니다.<br><br>또한 화질이 크게 중요하지 않거나, 개별적인 자막이나 오디오 설정이 필요 없으며, 화면을 공유하는 사람이 자신의 브라우저 창이나 화면을 보여주는 데 거부감이 없는 경우에도 합리적인 방법입니다.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "화면 공유가 번거로울 수 있는 상황",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "가장 큰 단점은 각자의 플레이어로 영상을 시청하는 것이 아니라는 점입니다. 한 사람이 자신의 화면을 스트리밍하면, 다른 사람들은 그 스트리밍 화면만 보게 됩니다.<br><br>이로 인해 화질 저하, 오디오 압축, 재생 지연이 발생할 수 있으며, 다른 사람들의 제어 권한도 제한됩니다. 자막이나 오디오 트랙 또한 화면 공유자가 선택한 설정으로 고정됩니다.<br><br>개인정보 보호 문제도 있습니다. 창이나 탭을 전환할 때 브라우저 탭, 이메일, Reddit, 채팅 내용 등 사적인 정보가 일시적으로 노출될 수 있습니다. 별도의 창을 사용하여 이를 피할 수는 있지만, 여전히 고려해야 할 사항입니다.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "KoalaSync가 더 깔끔하게 느껴지는 이유",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync는 화면을 직접 스트리밍하지 않습니다. 각자 자신의 브라우저에서 영상을 시청하며, KoalaSync는 재생, 일시 정지, 탐색과 같은 재생 관련 동작만 동기화합니다.<br><br>따라서 각자 자신의 기기에서 전체 화면으로 시청하거나, 플레이어가 지원하는 경우 개별 자막 및 오디오 설정을 사용할 수 있으며, 음성 채팅은 Discord, Teamspeak 또는 기타 통화 서비스를 통해 별도로 진행할 수 있습니다.<br><br>영화 감상 모임의 경우, 한 사람이 화면을 송출하는 방식보다 훨씬 깔끔한 경험을 제공합니다. 특히 Emby, Jellyfin, Plex와 같은 브라우저 기반 서비스나 브라우저에서 연 로컬 파일, 비공개 도메인, 또는 일반적인 브라우저 비디오 플레이어를 사용하는 웹사이트에서 활용하기에 매우 유용합니다.",
+  "ALT_SCREEN_LIMITS_TITLE": "솔직한 한계점",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync는 음성 통화를 대체하는 서비스가 아닙니다. 영상을 보면서 대화하고 싶다면 평소처럼 Discord, Teamspeak, Signal, WhatsApp 등을 그대로 사용하면 됩니다.<br><br>또한 모든 참가자가 각자의 기기에서 해당 영상이나 페이지에 접속할 수 있어야 합니다. KoalaSync는 구독, 로그인, DRM, 지역 제한 또는 플랫폼 규정을 우회하지 않습니다.<br><br>현재 데스크톱 브라우저에서만 지원되며, 자체 채팅이나 음성 기능은 없습니다. 호환성은 항상 브라우저 및 동영상 플레이어의 영향을 받습니다.",
+  "ALT_SCREEN_SUMMARY_TITLE": "요약",
+  "ALT_SCREEN_SUMMARY_BODY": "화질, 개인정보 보호, 개별 제어 기능 등을 크게 신경 쓰지 않고 간편하게 진행하고 싶을 때는 화면 공유가 가장 간단한 방법입니다. 반면, 모든 참가자가 각자의 브라우저에서 직접 영상을 시청하며 실제로 함께 보는 듯한 느낌을 원한다면 KoalaSync가 더 적합합니다.",
+  "ALT_TRY_KOALASYNC": "KoalaSync 사용해 보기"
 }
diff --git a/website/locales/nl.json b/website/locales/nl.json
index d8f719e..df78a57 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync is niet verbonden aan, goedgekeurd door of geassocieerd met Netflix, Disney+, Amazon, YouTube, Twitch of enig ander streamingplatform. Alle handelsmerken zijn eigendom van hun respectieve eigenaren.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TELEPARTY_TITLE": "KoalaSync vs. Teleparty: welke tool voor 'watch parties' moet je kiezen?",
+  "ALT_TELEPARTY_META_DESC": "Een praktische vergelijking tussen KoalaSync en Teleparty voor watch parties, met aandacht voor ingebouwde chat, mobiele ondersteuning, videosynchronisatie in de browser, self-hosted mediaservers en open-sourcegebruik.",
+  "ALT_TELEPARTY_INTRO": "KoalaSync en Teleparty bieden allebei een oplossing voor hetzelfde vervelende probleem: samen iets kijken zonder dat gedoe met '3, 2, 1, afspelen'. Ze pakken het alleen anders aan.<br><br>Teleparty is de logische keuze als je een ingebouwde chatfunctie wilt of op mobiel wilt kijken. KoalaSync is meer geschikt voor watch parties via de desktopbrowser, waarbij je al met elkaar praat via Discord, Teamspeak of een andere spraakverbinding en alleen wilt dat het afspelen synchroon loopt.<br><br>De belangrijkste reden waarom ik KoalaSync heb ontwikkeld, is flexibiliteit. Het is bedoeld om te werken met vrijwel elke website die een standaard videospeler in de browser gebruikt, en niet slechts met een vaste lijst platforms. Dit omvat ook self-hosted systemen zoals Emby, Jellyfin en Plex, lokale of privé-domeinen en talloze reguliere videopagina's in de browser.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Wanneer Teleparty toch een goede keuze kan zijn",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Teleparty kan de betere keuze zijn als je wilt dat de chatfunctie deel uitmaakt van de watch party-tool zelf. KoalaSync heeft momenteel geen ingebouwde chat. Er wordt vanuit gegaan dat je al ergens anders met elkaar praat, bijvoorbeeld via Discord, Teamspeak, WhatsApp, Signal of een gewoon telefoongesprek.<br><br>Mobiel gebruik is een andere belangrijke factor. Teleparty heeft een app, terwijl KoalaSync momenteel alleen in desktopbrowsers werkt. Als je Netflix wilt synchroniseren op een telefoon of tablet, is KoalaSync daarvoor op dit moment niet de juiste tool.<br><br>Dus als chat en mobiele ondersteuning voor jou het belangrijkst zijn, past Teleparty wellicht beter bij jouw situatie.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "Wanneer KoalaSync wellicht beter past",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "KoalaSync is een betere keuze als je op zoek bent naar een flexibele tool voor het synchroniseren van video's in desktopbrowsers, in plaats van een oplossing die gebonden is aan een beperkt aantal platforms.<br><br>Het werkt met vrijwel elke website die gebruikmaakt van een standaard videospeler in de browser. Dit is vooral handig voor Emby, Jellyfin, Plex, privémediaservers, lokale domeinen of kleinere videosites die doorgaans worden overgeslagen door traditionele 'watch party'-tools.<br><br>Bovendien is het gratis en open source, vereist het geen account en kun je het zelf hosten als je je eigen relay wilt draaien. Ik heb het ontwikkeld omdat ik een privacyvriendelijke oplossing wilde die samenwerkte met mijn eigen Emby-opstelling, en niet weer een gesloten platform dat alleen geschikt is voor een paar grote streamingdiensten.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "Het belangrijkste verschil",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty is meer een 'watch party'-product, inclusief chatfunctie en ondersteuning voor mobiele apparaten. KoalaSync fungeert eerder als een flexibele synchronisatielaag voor video's in de browser.<br><br>Dat lijkt misschien een klein verschil, maar het heeft grote gevolgen voor de manier waarop je de tool gebruikt. Als je een complete 'watch party'-app met ingebouwde chat nodig hebt, is Teleparty een logische keuze. Als je al over voicechat beschikt en alleen wilt dat de videobediening synchroon blijft lopen tussen verschillende browsers, is KoalaSync de eenvoudigere en geschiktere oplossing.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Eerlijke blik op de beperkingen",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync is geen wondermiddel en doet niet geheimzinnig over zijn beperkingen. Op dit moment werkt de tool alleen in desktopbrowsers. Er is geen ingebouwde chatfunctie en geen mobiele app.<br><br>De werking hangt ook af van de browser en de videospeler. KoalaSync zou moeten werken met vrijwel elke standaard videospeler in de browser, maar websites kunnen op elk moment hun speler, DRM-implementatie of browserbeperkingen wijzigen.<br><br>KoalaSync is niet verbonden met Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex of enig ander hier genoemd merk. Deze namen worden uitsluitend gebruikt om typische gebruiksscenario's toe te lichten.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Samenvatting",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Als je behoefte hebt aan een ingebouwde chatfunctie of ondersteuning voor mobiele apparaten, is Teleparty wellicht de betere keuze. Als je echter op zoek bent naar gratis, open-source synchronisatie via desktopbrowsers die werkt met vrijwel elke standaard videospeler – inclusief zelfgehoste mediaservers zoals Emby, Jellyfin en Plex – dan is KoalaSync waarschijnlijk de betere optie.",
+  "ALT_SCREEN_TITLE": "KoalaSync vs. scherm delen: wanneer is videosynchronisatie beter?",
+  "ALT_SCREEN_META_DESC": "Een praktische vergelijking tussen KoalaSync en scherm delen voor filmavonden op afstand, met aandacht voor bediening van het afspelen, videokwaliteit, privacy, ondertiteling en kijken via de browser.",
+  "ALT_SCREEN_INTRO": "Scherm delen werkt prima en is soms ook echt voldoende. Eén persoon deelt het scherm, de rest kijkt mee, en klaar ben je.<br><br>Maar bij langere filmavonden of het samen kijken van afleveringen kan het vervelend worden. De videokwaliteit hangt af van de uploadsnelheid, CPU en browser van degene die het scherm deelt, evenals de compressie die wordt toegepast door apps als Discord, Teamspeak, Zoom of andere belprogramma's. Bovendien heeft slechts één persoon echt controle over het afspelen.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Wanneer scherm delen voldoende is",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Scherm delen is een prima oplossing als je de snelst mogelijke opzet wilt. Als slechts één persoon toegang heeft tot de video of als iedereen ermee akkoord gaat dat één persoon de bediening (afspelen, pauzeren, vooruit-/terugspoelen) in handen heeft, is dit wellicht de eenvoudigste optie.<br><br>Het is ook een logische keuze als de beeldkwaliteit minder belangrijk is, niemand specifieke ondertiteling of audio-instellingen nodig heeft en de persoon die het beeld deelt er geen bezwaar tegen heeft om dat browservenster of scherm te laten zien.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Wanneer scherm delen vervelend kan zijn",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "Het grootste nadeel is dat niet iedereen in zijn eigen speler kijkt. Eén persoon streamt het scherm en alle anderen zien alleen die stream.<br><br>Dit kan leiden tot een lagere beeldkwaliteit, gecomprimeerde audio, vertraging bij het afspelen en minder controle voor de andere kijkers. Ook de ondertiteling en audiosporen zijn afhankelijk van wat de deler heeft gekozen.<br><br>Daarnaast speelt privacy een rol. Als je van venster of tabblad wisselt, kunnen anderen mogelijk kortstondig je browsertabbladen, e-mail, Reddit, chats of andere privégegevens zien. Dit is te omzeilen door een apart venster te gebruiken, maar het is wel iets om rekening mee te houden.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Waarom KoalaSync 'netter' kan aanvoelen",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync streamt je scherm niet. Iedereen bekijkt de video lokaal in de eigen browser; KoalaSync zorgt er alleen voor dat acties zoals afspelen, pauzeren en vooruit-/terugspoelen synchroon blijven lopen.<br><br>Hierdoor kan iedereen op het eigen apparaat in volledig scherm kijken, eigen instellingen voor ondertiteling of audio gebruiken (mits de speler dit ondersteunt) en de voicechat gescheiden houden via Discord, Teamspeak of een andere beldienst.<br><br>Voor filmavonden kan dit veel prettiger aanvoelen dan wanneer één persoon het scherm deelt. Het is vooral handig voor browsergebaseerde systemen zoals Emby, Jellyfin, Plex, lokale bestanden die in de browser worden geopend, privédomeinen of andere websites met standaard videospelers in de browser.",
+  "ALT_SCREEN_LIMITS_TITLE": "Eerlijke beperkingen",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync is geen vervanging voor een spraakgesprek. Als je tijdens het kijken wilt praten, gebruik je gewoon Discord, Teamspeak, Signal, WhatsApp of wat je normaal ook gebruikt.<br><br>Iedereen heeft ook toegang tot de video of pagina op het eigen apparaat nodig. KoalaSync omzeilt geen abonnementen, inloggegevens, DRM, regionale beperkingen of platformregels.<br><br>Het werkt momenteel alleen in desktopbrowsers, heeft geen ingebouwde chat- of spraakfunctie en de compatibiliteit hangt altijd af van de browser en de videospeler.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Samenvatting",
+  "ALT_SCREEN_SUMMARY_BODY": "Scherm delen is de eenvoudigste optie als je snel iets wilt doen en niet veel waarde hecht aan kwaliteit, privacy of individuele controle. KoalaSync is een betere keuze wanneer iedereen lokaal in de eigen browser moet kijken en de sessie meer moet aanvoelen als echt samen kijken.",
+  "ALT_TRY_KOALASYNC": "Probeer KoalaSync"
 }
diff --git a/website/locales/pl.json b/website/locales/pl.json
index dbc839a..ab02c63 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync nie jest powiązany, wspierany ani stowarzyszony z Netflix, Disney+, Amazon, YouTube, Twitch ani żadną inną platformą streamingową. Wszystkie znaki towarowe są własnością ich odpowiednich właścicieli.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TELEPARTY_TITLE": "KoalaSync czy Teleparty: którego narzędzia do wspólnego oglądania użyć?",
+  "ALT_TELEPARTY_META_DESC": "Praktyczne porównanie narzędzi KoalaSync i Teleparty pod kątem wspólnego oglądania: wbudowany czat, obsługa urządzeń mobilnych, synchronizacja wideo w przeglądarce, własne serwery multimediów i charakter open-source.",
+  "ALT_TELEPARTY_INTRO": "Zarówno KoalaSync, jak i Teleparty rozwiązują ten sam uciążliwy problem: jak oglądać coś wspólnie bez konieczności odliczania „3, 2, 1, start”. Różnią się jednak podejściem do tego zadania.<br><br>Teleparty sprawdza się najlepiej, jeśli zależy Ci na wbudowanym czacie lub oglądaniu na urządzeniach mobilnych. KoalaSync jest raczej rozwiązaniem do wspólnego oglądania w przeglądarce na komputerze – gdy rozmawiacie już przez Discorda, Teamspeaka lub inny komunikator głosowy i chcecie jedynie zsynchronizować odtwarzanie.<br><br>Głównym powodem stworzenia KoalaSync była elastyczność. Narzędzie to ma współpracować z niemal każdą stroną wykorzystującą standardowy odtwarzacz wideo w przeglądarce, a nie tylko z wybraną listą platform. Obejmuje to własne serwery multimediów, takie jak Emby, Jellyfin czy Plex, domeny lokalne lub prywatne oraz wiele typowych stron z materiałami wideo.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Kiedy Teleparty wciąż może być dobrym wyborem",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Teleparty może okazać się lepszym rozwiązaniem, jeśli chcesz, aby czat był częścią samego narzędzia do wspólnego oglądania. KoalaSync nie posiada obecnie wbudowanego czatu; zakłada, że rozmawiacie za pośrednictwem innych kanałów, takich jak Discord, Teamspeak, WhatsApp, Signal czy zwykłe połączenie głosowe.<br><br>Kolejną istotną kwestią jest obsługa urządzeń mobilnych. Teleparty posiada dedykowaną aplikację, podczas gdy KoalaSync działa obecnie tylko w przeglądarkach na komputerach stacjonarnych. Jeśli chcesz zsynchronizować Netflixa na telefonie lub tablecie, KoalaSync nie będzie w tej chwili odpowiednim narzędziem.<br><br>Zatem, jeśli czat i obsługa urządzeń mobilnych są dla Ciebie najważniejsze, Teleparty może po prostu lepiej pasować do Twoich potrzeb.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "Kiedy warto wybrać KoalaSync",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "KoalaSync to lepszy wybór, jeśli szukasz elastycznego narzędzia do synchronizacji odtwarzania wideo w przeglądarce, a nie rozwiązania ograniczonego do wąskiej listy platform.<br><br>Narzędzie współpracuje z niemal każdą stroną internetową wykorzystującą standardowy odtwarzacz wideo w przeglądarce. Jest to szczególnie przydatne w przypadku serwisów takich jak Emby, Jellyfin, Plex, prywatnych serwerów multimedialnych, domen lokalnych czy mniejszych serwisów wideo, które zazwyczaj są pomijane przez klasyczne narzędzia do wspólnego oglądania.<br><br>Co więcej, KoalaSync jest darmowe, ma otwarty kod źródłowy, nie wymaga zakładania konta i pozwala na samodzielne hostowanie (jeśli chcesz uruchomić własny serwer pośredniczący). Stworzyłem je, ponieważ zależało mi na rozwiązaniu szanującym prywatność, które współpracowałoby z moją własną konfiguracją Emby, a nie na kolejnej zamkniętej platformie ograniczonej do kilku największych serwisów streamingowych.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "Główna różnica",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty to produkt nastawiony na wspólne oglądanie, oferujący wbudowany czat i obsługę urządzeń mobilnych. KoalaSync pełni raczej funkcję elastycznej warstwy synchronizującej odtwarzanie wideo w przeglądarce.<br><br>Może się to wydawać drobną różnicą, ale znacząco wpływa na sposób użytkowania. Jeśli potrzebujesz kompletnej aplikacji do wspólnego oglądania z wbudowanym czatem, Teleparty będzie dobrym wyborem. Jeśli natomiast korzystasz już z czatu głosowego i zależy Ci jedynie na synchronizacji sterowania odtwarzaniem między przeglądarkami, prostszym i lepszym rozwiązaniem będzie KoalaSync.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Szczerze o ograniczeniach",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync nie jest magicznym rozwiązaniem i nie ukrywa swoich ograniczeń. Obecnie działa tylko w przeglądarkach na komputerach stacjonarnych. Nie posiada wbudowanego czatu ani aplikacji mobilnej.<br><br>Kompatybilność zależy również od przeglądarki i odtwarzacza wideo. KoalaSync powinno współpracować z niemal każdym standardowym odtwarzaczem przeglądarkowym, jednak właściciele stron mogą w każdej chwili zmienić odtwarzacz, sposób działania zabezpieczeń DRM czy ograniczenia przeglądarki.<br><br>KoalaSync nie jest powiązane z serwisami Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex ani żadną inną wymienioną tu marką. Nazwy te zostały użyte wyłącznie w celu zilustrowania typowych scenariuszy użycia.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Podsumowanie",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Jeśli zależy Ci na wbudowanym czacie lub obsłudze urządzeń mobilnych, lepszym wyborem może okazać się Teleparty. Jeśli natomiast szukasz darmowego, otwartoźródłowego rozwiązania do synchronizacji w przeglądarce na komputerze, które współpracuje z niemal każdym standardowym odtwarzaczem wideo – w tym z własnymi serwerami multimedialnymi, takimi jak Emby, Jellyfin czy Plex – lepszym rozwiązaniem będzie prawdopodobnie KoalaSync.",
+  "ALT_SCREEN_TITLE": "KoalaSync a udostępnianie ekranu: kiedy synchronizacja wideo sprawdza się lepiej?",
+  "ALT_SCREEN_META_DESC": "Praktyczne porównanie KoalaSync i udostępniania ekranu pod kątem wspólnych seansów filmowych online: sterowanie odtwarzaniem, jakość obrazu, prywatność, napisy i oglądanie w przeglądarce.",
+  "ALT_SCREEN_INTRO": "Udostępnianie ekranu działa i – szczerze mówiąc – czasem to wystarczy. Jedna osoba udostępnia swój ekran, pozostali oglądają i gotowe.<br><br>Jednak w przypadku dłuższych seansów czy wspólnego oglądania odcinków seriali może to stać się uciążliwe. Jakość obrazu zależy od szybkości wysyłania danych (uploadu), procesora i przeglądarki osoby udostępniającej, a także od kompresji stosowanej przez aplikacje takie jak Discord, Teamspeak, Zoom czy inne komunikatory. Co więcej, tylko jedna osoba ma faktyczną kontrolę nad odtwarzaniem.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Kiedy udostępnianie ekranu wystarczy",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Udostępnianie ekranu sprawdza się dobrze, gdy zależy Ci na jak najszybszym rozpoczęciu seansu. Jeśli tylko jedna osoba ma dostęp do materiału wideo lub jeśli wszystkim odpowiada, że jedna osoba steruje odtwarzaniem (start, pauza, przewijanie), może to być najprostsze rozwiązanie.<br><br>Ma to również sens, gdy jakość nie jest kluczowa, nikt nie potrzebuje własnych ustawień napisów czy dźwięku, a osoba udostępniająca nie ma nic przeciwko pokazywaniu okna przeglądarki lub całego ekranu.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Kiedy udostępnianie ekranu bywa uciążliwe",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "Największą wadą jest to, że nie każdy ogląda materiał we własnym odtwarzaczu. Jedna osoba przesyła obraz swojego ekranu, a wszyscy pozostali widzą tylko ten przekaz.<br><br>Może to oznaczać gorszą jakość wideo, skompresowany dźwięk, opóźnienia w odtwarzaniu oraz mniejszą kontrolę dla pozostałych osób. Napisy i ścieżki dźwiękowe są również narzucone przez osobę udostępniającą.<br><br>Istnieje też kwestia prywatności. Jeśli przełączysz okna lub karty, inni mogą na chwilę zobaczyć zawartość Twoich kart w przeglądarce, e-maile, Reddita, czaty czy inne prywatne treści. Można temu zaradzić, używając osobnego okna, ale wciąż jest to kwestia, o której trzeba pamiętać.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Dlaczego KoalaSync może wydawać się lepszym rozwiązaniem",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync nie przesyła obrazu Twojego ekranu. Każdy ogląda wideo lokalnie we własnej przeglądarce, a KoalaSync jedynie synchronizuje działania takie jak start, pauza czy przewijanie.<br><br>Oznacza to, że każdy może korzystać z trybu pełnoekranowego na własnym urządzeniu, używać własnych ustawień napisów lub dźwięku (jeśli odtwarzacz na to pozwala) oraz prowadzić rozmowę głosową oddzielnie – np. przez Discorda, TeamSpeaka czy inne komunikatory.<br><br>W przypadku wspólnych seansów filmowych rozwiązanie to może wydawać się znacznie bardziej uporządkowane i wygodne niż udostępnianie ekranu przez jedną osobę. Jest to szczególnie przydatne w przypadku rozwiązań przeglądarkowych, takich jak Emby, Jellyfin, Plex, plików lokalnych otwieranych w przeglądarce, prywatnych domen czy innych stron korzystających ze standardowych odtwarzaczy wideo.",
+  "ALT_SCREEN_LIMITS_TITLE": "Szczerze o ograniczeniach",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync nie zastępuje rozmowy głosowej. Jeśli chcesz rozmawiać podczas oglądania, nadal możesz korzystać z Discorda, TeamSpeaka, Signala, WhatsAppa lub innych narzędzi, których używasz na co dzień.<br><br>Każda osoba musi również mieć dostęp do filmu lub strony na własnym urządzeniu. KoalaSync nie omija subskrypcji, konieczności logowania, zabezpieczeń DRM, ograniczeń regionalnych ani regulaminów platform.<br><br>Obecnie rozwiązanie to działa tylko w przeglądarkach na komputerach stacjonarnych i nie posiada wbudowanego czatu ani funkcji komunikacji głosowej, a kompatybilność zależy od używanej przeglądarki oraz odtwarzacza wideo.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Podsumowanie",
+  "ALT_SCREEN_SUMMARY_BODY": "Udostępnianie ekranu to najprostsze rozwiązanie, gdy zależy Ci na szybkości, a kwestie jakości, prywatności czy indywidualnej kontroli nad odtwarzaniem nie są priorytetem. KoalaSync sprawdza się lepiej, gdy uczestnicy oglądają materiał lokalnie we własnych przeglądarkach, a sesja ma bardziej przypominać wspólny seans.",
+  "ALT_TRY_KOALASYNC": "Wypróbuj KoalaSync"
 }
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index 107f693..e0dd9b1 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync não é afiliado à Netflix, Disney+, YouTube, Twitch, etc. Todas as marcas registradas são de propriedade de seus respectivos donos.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TELEPARTY_TITLE": "KoalaSync vs. Teleparty: qual ferramenta de watch party você deve usar?",
+  "ALT_TELEPARTY_META_DESC": "Uma comparação prática entre KoalaSync e Teleparty para watch parties, abordando chat integrado, suporte para dispositivos móveis, sincronização de vídeo no navegador, servidores de mídia hospedados pelo próprio usuário e uso de código aberto.",
+  "ALT_TELEPARTY_INTRO": "Tanto o KoalaSync quanto o Teleparty ajudam a resolver o mesmo problema incômodo: assistir a algo em conjunto sem precisar daquela rotina de \"3, 2, 1, play\". A diferença é a abordagem que cada um utiliza.<br><br>O Teleparty é a opção mais indicada se você deseja um chat integrado ou quer assistir pelo celular. O KoalaSync é mais voltado para watch parties em navegadores de desktop, onde você já conversa via Discord, Teamspeak ou outra chamada de voz e só precisa que a reprodução do vídeo permaneça sincronizada.<br><br>O principal motivo pelo qual criei o KoalaSync foi a flexibilidade. Ele foi projetado para funcionar com praticamente qualquer site que utilize um reprodutor de vídeo padrão de navegador, e não apenas com uma lista fixa de plataformas. Isso inclui sistemas hospedados pelo próprio usuário, como Emby, Jellyfin e Plex, domínios locais ou privados e muitas páginas de vídeo comuns na web.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Quando o Teleparty ainda pode ser uma boa opção",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "O Teleparty ainda pode ser a melhor escolha se você quiser que o chat faça parte da própria ferramenta de watch party. Atualmente, o KoalaSync não possui chat integrado; ele parte do princípio de que você já está conversando por outro meio, como Discord, Teamspeak, WhatsApp, Signal ou uma chamada convencional.<br><br>O suporte para dispositivos móveis é outro fator importante. O Teleparty possui um aplicativo, enquanto o KoalaSync, no momento, funciona apenas em navegadores de desktop. Se você deseja sincronizar a Netflix em um celular ou tablet, o KoalaSync não é a ferramenta ideal para isso agora.<br><br>Portanto, se chat e suporte para dispositivos móveis são as suas prioridades, o Teleparty pode simplesmente se adequar melhor à sua configuração.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "Quando o KoalaSync pode ser a melhor opção",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "O KoalaSync é mais adequado se você busca uma ferramenta flexível de sincronização de vídeo em navegadores para desktop, em vez de algo restrito a uma lista limitada de plataformas.<br><br>Ele funciona com praticamente qualquer site que utilize o reprodutor de vídeo padrão do navegador. Isso é especialmente útil para Emby, Jellyfin, Plex, servidores de mídia privados, domínios locais ou sites de vídeo menores que as ferramentas tradicionais de 'watch party' costumam ignorar.<br><br>Além disso, é gratuito, de código aberto, não exige criação de conta e permite auto-hospedagem caso você queira executar seu próprio servidor de retransmissão (relay). Eu o criei porque queria algo que respeitasse a privacidade e funcionasse com minha própria configuração do Emby, e não outra plataforma fechada restrita a alguns grandes serviços de streaming.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "A principal diferença",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "O Teleparty é mais voltado para a experiência de 'watch party' (sessão de visualização conjunta), oferecendo chat e suporte para dispositivos móveis. Já o KoalaSync funciona mais como uma camada flexível de sincronização de vídeo entre navegadores.<br><br>Pode parecer uma diferença pequena, mas ela altera significativamente a forma de uso. Se você precisa de um aplicativo completo de 'watch party' com chat integrado, o Teleparty é a escolha ideal. Se você já utiliza chat de voz e quer apenas manter os controles de vídeo sincronizados entre navegadores, o KoalaSync é a solução mais simples.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Limitações reais",
+  "ALT_TELEPARTY_LIMITS_BODY": "O KoalaSync não faz mágica e não tenta esconder suas limitações. Atualmente, ele funciona apenas em navegadores para desktop. Não possui chat integrado nem aplicativo para dispositivos móveis.<br><br>A compatibilidade também depende do navegador e do reprodutor de vídeo utilizado. O KoalaSync deve funcionar com praticamente qualquer reprodutor de vídeo padrão de navegador, mas os sites podem alterar seus reprodutores, o comportamento de DRM ou as restrições do navegador a qualquer momento.<br><br>O KoalaSync não tem vínculo com Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex ou qualquer outra marca mencionada aqui. Os nomes são utilizados apenas para ilustrar casos de uso comuns.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Resumo",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Se você busca chat integrado ou suporte para dispositivos móveis, o Teleparty pode ser a melhor opção. Se você prefere uma solução gratuita e de código aberto para sincronização em navegadores de desktop — que funcione com praticamente qualquer reprodutor de vídeo comum, incluindo servidores de mídia auto-hospedados como Emby, Jellyfin e Plex —, o KoalaSync é provavelmente a escolha ideal.",
+  "ALT_SCREEN_TITLE": "KoalaSync vs. compartilhamento de tela: quando a sincronização de vídeo é melhor?",
+  "ALT_SCREEN_META_DESC": "Uma comparação prática entre o KoalaSync e o compartilhamento de tela para sessões de cinema remotas, abordando controle de reprodução, qualidade de vídeo, privacidade, legendas e visualização via navegador.",
+  "ALT_SCREEN_INTRO": "O compartilhamento de tela funciona e, honestamente, às vezes é o suficiente. Uma pessoa compartilha a tela, as outras assistem e pronto.<br><br>Mas, para sessões de cinema mais longas ou para assistir a episódios em conjunto, isso pode se tornar incômodo. A qualidade do vídeo depende da velocidade de upload, da CPU e do navegador de quem está compartilhando, além da compressão aplicada por aplicativos como Discord, Teamspeak, Zoom ou outros. Além disso, apenas uma pessoa realmente controla a reprodução.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Quando o compartilhamento de tela é suficiente",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "O compartilhamento de tela é uma boa opção quando você quer uma configuração rápida. Se apenas uma pessoa tem acesso ao vídeo ou se todos concordam que uma única pessoa controle a reprodução, a pausa e a navegação pelo vídeo, essa pode ser a opção mais simples.<br><br>Também faz sentido quando a qualidade não é uma prioridade, quando ninguém precisa de legendas ou configurações de áudio personalizadas e quando a pessoa que está compartilhando se sente confortável em exibir aquela janela do navegador ou a tela do computador.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Quando o compartilhamento de tela pode ser incômodo",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "A maior desvantagem é que nem todos assistem através de seu próprio reprodutor de vídeo. Uma pessoa transmite a tela, e todas as outras apenas visualizam essa transmissão.<br><br>Isso pode resultar em qualidade de vídeo inferior, áudio comprimido, atraso na reprodução e menos controle para os demais participantes. As legendas e faixas de áudio também serão aquelas escolhidas por quem está compartilhando.<br><br>Há também a questão da privacidade. Se você alternar entre janelas ou abas, as pessoas poderão ver brevemente suas abas do navegador, e-mail, Reddit, chats ou outros conteúdos privados. É possível contornar isso usando uma janela separada, mas ainda é algo que você precisa levar em consideração.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Por que o KoalaSync pode parecer uma solução mais organizada",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "O KoalaSync não transmite a sua tela. Todos assistem ao vídeo localmente em seus próprios navegadores, e o KoalaSync mantém sincronizadas apenas as ações de reprodução, como iniciar, pausar e avançar ou retroceder o vídeo.<br><br>Isso significa que cada pessoa pode usar o modo de tela cheia em seu próprio dispositivo, utilizar suas configurações de legenda ou áudio (se o reprodutor oferecer suporte) e manter o chat de voz separado, via Discord, Teamspeak ou outra ferramenta de chamada.<br><br>Para noites de filmes, essa abordagem pode parecer muito mais organizada do que uma pessoa transmitindo a tela. É especialmente útil para configurações baseadas em navegador, como Emby, Jellyfin, Plex, arquivos locais abertos no navegador, domínios privados ou outros sites que utilizam reprodutores de vídeo padrão do navegador.",
+  "ALT_SCREEN_LIMITS_TITLE": "Limitações reais",
+  "ALT_SCREEN_LIMITS_BODY": "O KoalaSync não substitui uma chamada de voz. Se você quiser conversar enquanto assiste, continue usando Discord, Teamspeak, Signal, WhatsApp ou qualquer ferramenta que utilize normalmente.<br><br>Todos também precisam ter acesso ao vídeo ou à página em seus próprios dispositivos. O KoalaSync não contorna assinaturas, logins, DRM, restrições regionais ou regras da plataforma.<br><br>Atualmente, funciona apenas em navegadores para desktop, não possui recursos integrados de chat ou voz, e a compatibilidade depende sempre do navegador e do reprodutor de vídeo.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Resumo",
+  "ALT_SCREEN_SUMMARY_BODY": "O compartilhamento de tela é a opção mais simples quando você quer algo rápido e não se preocupa muito com qualidade, privacidade ou controle individual. O KoalaSync é mais adequado quando todos devem assistir localmente em seus próprios navegadores e a sessão deve proporcionar uma experiência mais próxima de realmente assistir juntos.",
+  "ALT_TRY_KOALASYNC": "Experimente o KoalaSync"
 }
diff --git a/website/locales/pt.json b/website/locales/pt.json
index cd0b7a7..b5c6554 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync não é afiliado à Netflix, Disney+, YouTube, Twitch, etc. Todas as marcas são propriedade dos seus titulares.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TELEPARTY_TITLE": "KoalaSync vs Teleparty: que ferramenta de festa de exibição deve utilizar?",
+  "ALT_TELEPARTY_META_DESC": "Uma comparação prática entre o KoalaSync e o Teleparty para festas de exibição, chat integrado, suporte para dispositivos móveis, sincronização de vídeo no browser, servidores de media auto-hospedados e utilização de código aberto.",
+  "ALT_TELEPARTY_INTRO": "O KoalaSync e o Teleparty resolvem o mesmo problema irritante: ver algo em conjunto sem ter de fazer toda aquela rotina de \"3, 2, 1, reproduzir\". Apenas usam abordagens diferentes.<br><br>O Teleparty é mais indicado se pretende um chat integrado ou se pretende ver em dispositivos móveis. O KoalaSync está mais virado para sessões de vídeo em browsers de desktop, onde já estão a conversar no Discord, Teamspeak ou noutra chamada de voz e apenas querem que a reprodução permaneça sincronizada.<br><br>A principal razão para eu ter criado o KoalaSync foi a flexibilidade. Foi concebido para funcionar com praticamente qualquer site que utilize um leitor de vídeo comum de browser, e não apenas com uma lista fixa de plataformas.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Quando o Teleparty ainda pode fazer sentido",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "O Teleparty pode ainda ser a melhor opção se quiser que o chat faça parte da própria ferramenta de visualização em grupo. O KoalaSync não tem um chat integrado de momento. Assume que já está a falar noutro local, como o Discord, Teamspeak, WhatsApp, Signal ou numa chamada telefónica normal.<br><br>A compatibilidade com dispositivos móveis é outro factor importante. O Teleparty tem uma aplicação, enquanto o KoalaSync funciona apenas em browsers de desktop. Se pretende sincronizar a Netflix num telemóvel ou tablet, o KoalaSync não é a ferramenta certa para isso agora.<br><br>Portanto, se o chat e a compatibilidade com dispositivos móveis são os aspetos mais importantes para si, o Teleparty pode simplesmente adequar-se melhor à sua configuração.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "Quando o KoalaSync pode ser a melhor opção",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "O KoalaSync é a melhor opção se procura uma ferramenta flexível de sincronização para navegadores de desktop, em vez de algo limitado a uma lista restrita de plataformas.<br><br>Funciona com praticamente qualquer site que utilize um leitor de vídeo padrão de navegador. Isto é especialmente útil para Emby, Jellyfin, Plex, servidores de media privados, domínios locais ou sites de vídeo mais pequenos do que as ferramentas clássicas de watch party geralmente ignoram.<br><br>Além disso, é gratuito, de código aberto, não requer contas e pode ser alojado no seu próprio servidor, caso queira executar o seu próprio relay.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "A principal diferença",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "O Teleparty é mais um produto para ver vídeos em grupo, com chat e suporte para dispositivos móveis. O KoalaSync é mais uma camada de sincronização flexível para vídeos nos browsers.<br><br>Isto pode parecer uma pequena diferença, mas muda bastante o caso de utilização. Se precisa de uma aplicação completa para ver vídeos em grupo, com chat integrado, o Teleparty faz sentido. Se já tem chat de voz e apenas quer que os controlos de vídeo permaneçam sincronizados entre browsers, o KoalaSync é a opção mais simples.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Limitações honestas",
+  "ALT_TELEPARTY_LIMITS_BODY": "O KoalaSync não é mágico e não tenta esconder as suas limitações. Atualmente, funciona apenas em navegadores de desktop. Não possui chat integrado nem aplicação para dispositivos móveis.<br><br>A compatibilidade também depende do navegador e do reprodutor de vídeo. O KoalaSync deve funcionar com quase qualquer reprodutor de vídeo comum de navegador, mas os sites podem alterar os seus reprodutores, comportamento de DRM ou restrições de navegador a qualquer momento.<br><br>O KoalaSync não tem qualquer ligação com Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex ou qualquer outra marca aqui mencionada.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Resumo",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Se pretende um chat integrado ou suporte para dispositivos móveis, o Teleparty pode ser a melhor opção. Se procura uma sincronização gratuita e de código aberto para browsers de desktop que funcione com praticamente qualquer leitor de vídeo comum, incluindo servidores de multimédia auto-hospedados como o Emby, Jellyfin e Plex, o KoalaSync é provavelmente a melhor escolha.",
+  "ALT_SCREEN_TITLE": "KoalaSync vs. partilha de ecrã: quando é que a sincronização de vídeo é melhor?",
+  "ALT_SCREEN_META_DESC": "Uma comparação prática entre o KoalaSync e a partilha de ecrã para noites de cinema remotas, controlo de reprodução, qualidade de vídeo, privacidade, legendas e visualização através do browser.",
+  "ALT_SCREEN_INTRO": "Partilhar o ecrã funciona e, por vezes, é suficiente. Uma pessoa partilha o ecrã, todos os outros vêem e pronto.<br><br>Mas para longas noites de cinema ou para ver episódios juntos, pode tornar-se irritante. A qualidade do vídeo depende da velocidade de upload de quem partilha, do CPU, do browser e da compressão aplicada pelo Discord, Teamspeak, Zoom ou outra aplicação de chamadas. Além disso, apenas uma pessoa controla a reprodução.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Quando a partilha de ecrã é suficiente",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Partilhar o ecrã é bom quando se pretende a configuração mais rápida possível. Se apenas uma pessoa tiver acesso ao vídeo ou se todos concordarem que uma pessoa controla a reprodução, a pausa e o avanço/retrocesso, esta pode ser a opção mais simples.<br><br>Também faz sentido quando a qualidade não é um fator crucial, quando ninguém precisa das suas próprias legendas ou definições de áudio e quando a pessoa que está a partilhar se sente confortável em mostrar a janela do browser ou o ecrã.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Onde a partilha de ecrã se torna irritante",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "A maior desvantagem é que nem todos estão a ver nos seus próprios leitores. Uma pessoa transmite o seu ecrã e todos os outros apenas vêem essa transmissão.<br><br>Isto pode significar pior qualidade de vídeo, áudio comprimido, reprodução diferida e menos controlo para todos os outros. As legendas e as faixas de áudio também são definidas pela pessoa que está a partilhar.<br><br>Há também a questão da privacidade. Se alternar entre janelas ou separadores, as pessoas podem ver brevemente os seus separadores do browser, e-mails, Reddit, chats ou outros conteúdos privados. Pode contornar isto com uma janela separada, mas ainda é algo que tem de considerar.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Porque é que o KoalaSync pode parecer mais limpo",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "O KoalaSync não transmite o seu ecrã. Cada pessoa vê o vídeo localmente no seu próprio browser, e o KoalaSync mantém sincronizadas apenas as ações de reprodução, como reproduzir, pausar e avançar/retroceder.<br><br>Isto significa que todos podem utilizar o modo de ecrã inteiro nos seus próprios dispositivos, utilizar as suas próprias definições de legendas ou áudio, se o leitor for compatível, e manter o chat de voz separado no Discord, Teamspeak ou outra chamada.<br><br>Para as noites de cinema, isto pode parecer muito mais limpo do que uma pessoa a transmitir o seu ecrã. É especialmente útil para configurações baseadas no browser, como Emby, Jellyfin, Plex, ficheiros locais abertos no browser, domínios privados ou outros sites com leitores de vídeo comuns do browser.",
+  "ALT_SCREEN_LIMITS_TITLE": "Limitações honestas",
+  "ALT_SCREEN_LIMITS_BODY": "O KoalaSync não substitui uma chamada de voz. Se quiser conversar enquanto assiste, utilize ainda o Discord, Teamspeak, Signal, WhatsApp ou qualquer outra aplicação que utilize normalmente.<br><br>Todos também precisam de ter acesso ao vídeo ou à página nos seus próprios dispositivos. O KoalaSync não ignora as subscrições, logins, DRM, restrições regionais ou regras de plataforma.<br><br>Atualmente, funciona apenas em navegadores de desktop, não tem chat ou recurso de voz integrados e a compatibilidade depende sempre do navegador e do leitor de vídeo.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Resumo",
+  "ALT_SCREEN_SUMMARY_BODY": "Partilhar o ecrã é a opção mais simples quando se quer algo rápido e não se liga muito à qualidade, privacidade ou controlo individual. O KoalaSync é mais adequado quando todos devem assistir localmente nos seus próprios browsers e a sessão deve parecer mais como assistir em conjunto.",
+  "ALT_TRY_KOALASYNC": "Experimente o KoalaSync"
 }
diff --git a/website/locales/ru.json b/website/locales/ru.json
index a8ea01e..b1c0e0a 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync не связан, не спонсируется и не аффилирован с Netflix, Disney+, Amazon, YouTube, Twitch или любой другой стриминговой платформой. Все товарные знаки являются собственностью их соответствующих владельцев.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TELEPARTY_TITLE": "KoalaSync или Teleparty: какой инструмент выбрать для совместного просмотра?",
+  "ALT_TELEPARTY_META_DESC": "Практическое сравнение KoalaSync и Teleparty: встроенный чат, поддержка мобильных устройств, синхронизация видео в браузере, использование собственных медиасерверов и открытый исходный код.",
+  "ALT_TELEPARTY_INTRO": "И KoalaSync, и Teleparty решают одну и ту же надоедливую проблему: как смотреть что-либо вместе, не прибегая к команде «3, 2, 1, начали!». Просто они используют разные подходы.<br><br>Teleparty — отличный выбор, если вам нужен встроенный чат или возможность просмотра на мобильном устройстве. KoalaSync больше подходит для совместного просмотра через браузер на компьютере: вы общаетесь, например, в Discord, TeamSpeak или другом голосовом чате, а программа просто обеспечивает синхронизацию воспроизведения.<br><br>Главной причиной создания KoalaSync стала гибкость. Инструмент задуман так, чтобы работать практически с любым сайтом, использующим стандартный браузерный видеоплеер, а не только с фиксированным списком платформ. Это касается и решений для самостоятельного хостинга (например, Emby, Jellyfin и Plex), и локальных или частных доменов, и множества обычных веб-страниц с видео.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Когда Teleparty все же может быть полезен",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Teleparty может оказаться лучшим выбором, если вам важно наличие чата непосредственно в самом инструменте для просмотра. В KoalaSync встроенного чата пока нет; предполагается, что вы общаетесь на другой платформе — например, в Discord, TeamSpeak, WhatsApp, Signal или по обычной телефонной связи.<br><br>Еще один важный фактор — поддержка мобильных устройств. У Teleparty есть приложение, тогда как KoalaSync пока работает только в браузерах на ПК. Если вы хотите синхронизировать просмотр Netflix на телефоне или планшете, KoalaSync для этого сейчас не подойдет.<br><br>Таким образом, если наличие чата и поддержка мобильных устройств для вас в приоритете, Teleparty может лучше вписаться в ваш сценарий использования.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "Когда лучше выбрать KoalaSync",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "KoalaSync — отличный выбор, если вам нужен гибкий инструмент для синхронизации видео в десктопном браузере, а не решение, привязанное к ограниченному списку платформ.<br><br>Сервис работает практически с любым сайтом, использующим стандартный браузерный видеоплеер. Это особенно удобно для Emby, Jellyfin, Plex, частных медиасерверов, локальных доменов или небольших видеосайтов, которые обычно игнорируются классическими инструментами для совместного просмотра.<br><br>Кроме того, это бесплатный проект с открытым исходным кодом; он не требует создания учетной записи и позволяет развернуть собственный сервер-посредник (relay), если вы хотите полного контроля. Я создал его, потому что искал решение, уважающее конфиденциальность и совместимое с моей собственной системой Emby, а не очередную закрытую платформу, работающую лишь с несколькими крупными стриминговыми сервисами.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "Главное отличие",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty — это полноценный сервис для совместного просмотра со встроенным чатом и поддержкой мобильных устройств. KoalaSync — это скорее гибкий инструмент для синхронизации воспроизведения видео в браузере.<br><br>Разница кажется незначительной, но она существенно меняет сценарий использования. Если вам нужно комплексное приложение для совместного просмотра со встроенным чатом, Teleparty — отличный вариант. Если же у вас уже есть голосовая связь и вам просто нужно синхронизировать управление видео в разных браузерах, KoalaSync подойдет лучше и проще.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Честно об ограничениях",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync не творит чудес и не скрывает своих ограничений. На данный момент сервис работает только в десктопных браузерах. В нем нет встроенного чата или мобильного приложения.<br><br>Совместимость также зависит от браузера и видеоплеера. KoalaSync должен работать практически с любым стандартным браузерным плеером, однако сайты могут в любой момент изменить свои плееры, механизмы DRM или ограничения браузера.<br><br>KoalaSync не связан с Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex или любыми другими упомянутыми здесь брендами. Названия используются исключительно для иллюстрации типичных сценариев использования.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Краткий обзор",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Если вам нужен встроенный чат или поддержка мобильных устройств, Teleparty может подойти лучше. Если же вы ищете бесплатное решение с открытым исходным кодом для синхронизации в настольном браузере, работающее практически с любым стандартным видеоплеером — включая собственные медиасерверы, такие как Emby, Jellyfin и Plex, — то, вероятно, лучшим выбором станет KoalaSync.",
+  "ALT_SCREEN_TITLE": "KoalaSync против демонстрации экрана: когда лучше использовать синхронизацию видео?",
+  "ALT_SCREEN_META_DESC": "Практическое сравнение KoalaSync и демонстрации экрана для совместного просмотра фильмов на расстоянии: управление воспроизведением, качество видео, конфиденциальность, субтитры и просмотр через браузер.",
+  "ALT_SCREEN_INTRO": "Демонстрация экрана — рабочий вариант, и порой его вполне достаточно. Один человек транслирует свой экран, остальные смотрят — и всё готово.<br><br>Однако при длительных киносеансах или совместном просмотре сериалов это может начать раздражать. Качество видео зависит от скорости исходящего соединения, мощности процессора и браузера того, кто ведет трансляцию, а также от алгоритмов сжатия, используемых в Discord, TeamSpeak, Zoom или других приложениях для связи. Кроме того, полноценно управлять воспроизведением может только один человек.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Когда достаточно демонстрации экрана",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Демонстрация экрана отлично подходит, если нужно максимально быстро всё настроить. Если доступ к видео есть только у одного человека или если всех устраивает, что один человек управляет воспроизведением (запуск, пауза, перемотка), то это может быть самым простым вариантом.<br><br>Этот способ также подходит, когда качество не критично, никому не нужны индивидуальные настройки субтитров или звука, а ведущему удобно демонстрировать окно браузера или экран.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Когда демонстрация экрана может раздражать",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "Главный недостаток в том, что зрители не смотрят видео в собственных плеерах. Один человек транслирует свой экран, а остальные видят только эту трансляцию.<br><br>Это может привести к снижению качества видео, сжатию звука, задержкам воспроизведения и ограничению возможностей управления для остальных. Субтитры и звуковые дорожки также будут такими, какие выбрал ведущий.<br><br>Не стоит забывать и о конфиденциальности. Если вы переключите окно или вкладку, зрители могут на мгновение увидеть ваши вкладки браузера, электронную почту, Reddit, чаты или другую личную информацию. Эту проблему можно решить, используя отдельное окно, но об этом всё равно приходится помнить.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Почему KoalaSync может быть удобнее",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync не транслирует ваш экран. Каждый смотрит видео локально в своем браузере, а KoalaSync лишь синхронизирует действия: запуск, паузу и перемотку.<br><br>Это позволяет каждому развернуть видео на весь экран своего устройства, использовать собственные настройки субтитров или звука (если плеер это поддерживает) и отдельно общаться в голосовом чате через Discord, TeamSpeak или другой сервис.<br><br>Для совместного просмотра фильмов это решение может быть гораздо удобнее, чем трансляция экрана одним человеком. Оно особенно полезно при использовании веб-сервисов (например, Emby, Jellyfin, Plex), локальных файлов, открытых в браузере, закрытых ресурсов или любых других сайтов со стандартными браузерными видеоплеерами.",
+  "ALT_SCREEN_LIMITS_TITLE": "Честный взгляд на ограничения",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync не заменяет голосовую связь. Если во время просмотра вы хотите общаться, используйте Discord, TeamSpeak, Signal, WhatsApp или любой другой привычный вам сервис.<br><br>Каждому участнику также необходим доступ к видео или веб-странице на собственном устройстве. KoalaSync не обходит требования к подписке, авторизации, DRM-защите, региональные ограничения или правила платформ.<br><br>На данный момент сервис работает только в браузерах на ПК, не имеет встроенного чата или функции голосовой связи, а совместимость зависит от конкретного браузера и видеоплеера.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Краткий обзор",
+  "ALT_SCREEN_SUMMARY_BODY": "Демонстрация экрана — самый простой вариант, если нужно быстро всё организовать и вас не особо волнуют качество, конфиденциальность или возможность индивидуального управления. KoalaSync лучше подходит для ситуаций, когда каждый участник смотрит видео локально в своем браузере, а сам сеанс больше напоминает реальный совместный просмотр.",
+  "ALT_TRY_KOALASYNC": "Попробовать KoalaSync"
 }
diff --git a/website/locales/tr.json b/website/locales/tr.json
index 0a29918..54bd1dc 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync; Netflix, Disney+, Amazon, YouTube, Twitch veya başka herhangi bir yayın platformuna bağlı değildir, bunlar tarafından desteklenmemektedir ve bunlarla ilişkili değildir. Tüm ticari markalar ilgili sahiplerinin mülkiyetindedir.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TELEPARTY_TITLE": "KoalaSync ve Teleparty: Hangi ortak izleme aracını kullanmalısınız?",
+  "ALT_TELEPARTY_META_DESC": "Ortak izleme etkinlikleri (watch party) için KoalaSync ve Teleparty'nin; yerleşik sohbet, mobil desteği, tarayıcı tabanlı video senkronizasyonu, kendi kendine barındırılan (self-hosted) medya sunucuları ve açık kaynak kullanımı açısından pratik bir karşılaştırması.",
+  "ALT_TELEPARTY_INTRO": "KoalaSync ve Teleparty, aynı can sıkıcı sorunu çözmeye yardımcı oluyor: O meşhur \"3, 2, 1, başlat\" ritüeliyle uğraşmadan birlikte bir şeyler izlemek. Ancak bunu yaparken farklı yaklaşımlar benimsiyorlar.<br><br>Yerleşik bir sohbet özelliği istiyorsanız veya mobilde izlemek istiyorsanız Teleparty en mantıklı seçenek olabilir. KoalaSync ise daha çok; Discord, Teamspeak veya başka bir sesli görüşme üzerinden zaten konuştuğunuz ve sadece oynatmanın senkronize kalmasını istediğiniz, masaüstü tarayıcı tabanlı izleme etkinlikleri için uygundur.<br><br>KoalaSync'i geliştirmemin temel nedeni esneklikti. Sadece belirli platformlar listesiyle sınırlı kalmayıp, standart bir tarayıcı video oynatıcısı kullanan hemen hemen her web sitesiyle çalışacak şekilde tasarlandı. Buna Emby, Jellyfin ve Plex gibi kendi kendine barındırılan sistemler, yerel/özel alan adları ve tarayıcıdaki pek çok sıradan video sayfası da dahildir.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Teleparty'nin hala mantıklı olabileceği durumlar",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Sohbetin doğrudan izleme aracının bir parçası olmasını istiyorsanız Teleparty hala daha iyi bir seçenek olabilir. KoalaSync'te şu an için yerleşik bir sohbet özelliği bulunmuyor; uygulama, Discord, Teamspeak, WhatsApp, Signal veya normal bir telefon görüşmesi gibi başka bir kanal üzerinden zaten konuştuğunuz varsayımıyla çalışıyor.<br><br>Bir diğer önemli neden ise mobil desteği. Teleparty'nin bir uygulaması varken, KoalaSync şu anda yalnızca masaüstü tarayıcılarda çalışıyor. Eğer telefon veya tablette Netflix senkronizasyonu yapmak istiyorsanız, KoalaSync şu an için bunun doğru aracı değildir.<br><br>Özetle; sohbet ve mobil desteği sizin için en önemli unsurlarsa, Teleparty kurulumunuza daha uygun olabilir.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "KoalaSync ne zaman daha iyi bir seçenek olabilir?",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "Sınırlı sayıda platformla kısıtlı bir çözüm yerine esnek bir masaüstü tarayıcı senkronizasyon aracı istiyorsanız KoalaSync daha iyi bir tercihtir.<br><br>Standart tarayıcı video oynatıcısını kullanan hemen hemen her web sitesiyle çalışır. Bu özellik; özellikle Emby, Jellyfin, Plex, özel medya sunucuları, yerel alan adları veya klasik 'birlikte izleme' (watch party) araçlarının genellikle göz ardı ettiği daha küçük video siteleri için oldukça kullanışlıdır.<br><br>Ayrıca ücretsiz ve açık kaynaklıdır; hesap gerektirmez ve kendi aktarım sunucunuzu (relay) çalıştırmak isterseniz kendi sunucunuzda barındırılabilir. Bunu geliştirme sebebim, sadece birkaç büyük yayın platformuna özel kapalı bir sistem yerine, kendi Emby kurulumumla uyumlu ve gizlilik dostu bir çözüm istememdi.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "Temel fark",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty daha çok sohbet ve mobil desteği sunan bir 'birlikte izleme' ürünüdür. KoalaSync ise tarayıcı videoları için daha esnek bir senkronizasyon katmanı işlevi görür.<br><br>Bu küçük bir fark gibi görünebilir ancak kullanım şeklini büyük ölçüde değiştirir. Eğer içinde sohbet özelliği de bulunan kapsamlı bir 'birlikte izleme' uygulamasına ihtiyacınız varsa Teleparty mantıklı bir seçimdir. Ancak sesli sohbet imkanınız zaten varsa ve sadece video kontrollerinin tarayıcılar arasında senkronize kalmasını istiyorsanız, KoalaSync daha basit ve uygun bir çözümdür.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Dürüstçe belirtilen sınırlamalar",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync sihirli bir çözüm değildir ve sınırlarını gizlemeye çalışmaz. Şu anda yalnızca masaüstü tarayıcılarda çalışır; yerleşik sohbet özelliği veya mobil uygulaması yoktur.<br><br>Uyumluluk durumu tarayıcıya ve video oynatıcısına da bağlıdır. KoalaSync'in standart tarayıcı video oynatıcılarının neredeyse tamamıyla çalışması beklenir; ancak web siteleri oynatıcılarını, DRM (Dijital Hak Yönetimi) işleyişlerini veya tarayıcı kısıtlamalarını diledikleri zaman değiştirebilirler.<br><br>KoalaSync; Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex veya burada adı geçen diğer hiçbir markayla bağlantılı değildir. Bu isimler yalnızca tipik kullanım senaryolarını açıklamak amacıyla kullanılmıştır.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Özet",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Yerleşik sohbet veya mobil desteği istiyorsanız, Teleparty daha uygun bir seçenek olabilir. Emby, Jellyfin ve Plex gibi kendi barındırdığınız medya sunucuları da dahil olmak üzere hemen hemen her standart video oynatıcıyla çalışan, ücretsiz ve açık kaynaklı bir masaüstü tarayıcı senkronizasyon aracı arıyorsanız, KoalaSync muhtemelen daha iyi bir tercihtir.",
+  "ALT_SCREEN_TITLE": "KoalaSync ve ekran paylaşımı karşılaştırması: Video senkronizasyonu ne zaman daha iyidir?",
+  "ALT_SCREEN_META_DESC": "Uzaktan film geceleri, oynatma kontrolü, video kalitesi, gizlilik, altyazılar ve tarayıcı tabanlı izleme konularında KoalaSync ile ekran paylaşımının pratik bir karşılaştırması.",
+  "ALT_SCREEN_INTRO": "Ekran paylaşımı işe yarar ve dürüst olmak gerekirse bazen yeterlidir. Bir kişi ekranını paylaşır, diğerleri izler ve işlem tamamlanır.<br><br>Ancak daha uzun film gecelerinde veya dizi bölümlerini birlikte izlerken bu durum can sıkıcı bir hal alabilir. Video kalitesi; paylaşımı yapan kişinin yükleme hızına, işlemci (CPU) gücüne, tarayıcısına ve Discord, Teamspeak, Zoom ya da diğer görüşme uygulamalarının uyguladığı sıkıştırma işlemine bağlıdır. Ayrıca, oynatmayı gerçekten kontrol eden tek bir kişi vardır.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Ekran paylaşımı ne zaman yeterlidir?",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Mümkün olan en hızlı kurulumu istediğinizde ekran paylaşımı gayet uygundur. Eğer videoya yalnızca bir kişi erişebiliyorsa ya da herkes oynatma, duraklatma ve ileri/geri sarma işlemlerinin tek bir kişi tarafından kontrol edilmesini sorun etmiyorsa, bu en basit seçenek olabilir.<br><br>Ayrıca görüntü kalitesinin çok önemli olmadığı, kimsenin kendine özel altyazı veya ses ayarlarına ihtiyaç duymadığı ve paylaşımı yapan kişinin o tarayıcı penceresini veya ekranını göstermekte bir sakınca görmediği durumlarda da mantıklı bir yöntemdir.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Ekran paylaşımının can sıkıcı olabildiği durumlar",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "En büyük dezavantaj, herkesin videoyu kendi oynatıcısında izlemiyor olmasıdır. Bir kişi ekranını yayınlar ve diğer herkes sadece bu yayını görür.<br><br>Bu durum; daha düşük görüntü kalitesi, sıkıştırılmış ses, gecikmeli oynatma ve diğerleri için daha az kontrol anlamına gelebilir. Altyazı ve ses seçenekleri de paylaşımı yapan kişinin seçtikleriyle sınırlı kalır.<br><br>Bir de gizlilik boyutu var. Pencereler veya sekmeler arasında geçiş yaparsanız, insanlar tarayıcı sekmelerinizi, e-postalarınızı, Reddit'i, sohbetlerinizi veya diğer özel içerikleri anlık olarak görebilir. Ayrı bir pencere kullanarak bunun önüne geçebilirsiniz ancak yine de dikkat etmeniz gereken bir husustur.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "KoalaSync neden daha düzenli bir deneyim sunar?",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync ekranınızı yayınlamaz. Herkes videoyu kendi tarayıcısında yerel olarak izler; KoalaSync ise yalnızca oynatma, duraklatma ve ileri/geri sarma gibi eylemleri senkronize halde tutar.<br><br>Bu sayede herkes kendi cihazında tam ekran modunu kullanabilir, oynatıcı destekliyorsa kendi altyazı veya ses ayarlarını seçebilir ve sesli sohbeti Discord, Teamspeak veya başka bir görüşme üzerinden ayrı olarak sürdürebilir.<br><br>Film geceleri için bu yöntem, bir kişinin ekranını yayınlamasına kıyasla çok daha düzenli ve temiz bir deneyim sunabilir. Özellikle Emby, Jellyfin, Plex gibi tarayıcı tabanlı sistemlerde, tarayıcıda açılan yerel dosyalarda, özel alan adlarında veya standart tarayıcı video oynatıcılarını kullanan diğer web sitelerinde oldukça kullanışlıdır.",
+  "ALT_SCREEN_LIMITS_TITLE": "Dürüstçe belirtilen sınırlamalar",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync, sesli görüşmenin yerini tutmaz. İzleme sırasında konuşmak isterseniz, yine Discord, Teamspeak, Signal, WhatsApp veya normalde kullandığınız herhangi bir aracı kullanmaya devam edebilirsiniz.<br><br>Ayrıca herkesin ilgili videoya veya sayfaya kendi cihazından erişebilmesi gerekir. KoalaSync; abonelikleri, oturum açma işlemlerini, DRM korumalarını, bölgesel kısıtlamaları veya platform kurallarını devre dışı bırakmaz.<br><br>Şu anda yalnızca masaüstü tarayıcılarında çalışır; yerleşik bir sohbet veya sesli görüşme özelliği yoktur ve uyumluluk her zaman kullanılan tarayıcıya ve video oynatıcıya bağlıdır.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Özet",
+  "ALT_SCREEN_SUMMARY_BODY": "Hızlı bir çözüm aradığınızda ve kalite, gizlilik ya da bireysel kontrol konularına çok önem vermediğinizde, ekran paylaşımı en basit seçenektir. Herkesin içeriği kendi tarayıcısında yerel olarak izlemesi gereken ve oturumun gerçekten birlikte izliyormuş hissi verdiği durumlarda ise KoalaSync daha uygun bir tercihtir.",
+  "ALT_TRY_KOALASYNC": "KoalaSync'i Deneyin"
 }
diff --git a/website/locales/uk.json b/website/locales/uk.json
index 4b43e61..ed6a3e3 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync не пов’язаний із Netflix, Disney+, Amazon, YouTube, Twitch або будь-якою іншою потоковою платформою, не схвалений і не пов’язаний з ними. Усі торгові марки є власністю відповідних власників.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TELEPARTY_TITLE": "KoalaSync проти Teleparty: який інструмент для спільного перегляду відео слід використовувати?",
+  "ALT_TELEPARTY_META_DESC": "Практичне порівняння KoalaSync та Teleparty для спільного перегляду відео, вбудованого чату, підтримки мобільних пристроїв, синхронізації відео в браузері, власних медіасерверів та використання програмного забезпечення з відкритим вихідним кодом.",
+  "ALT_TELEPARTY_INTRO": "KoalaSync та Teleparty допомагають вирішити ту саму надокучливу проблему: перегляд чогось разом без виконання всієї процедури «3, 2, 1, грати». Вони просто використовують інший підхід.<br><br>Teleparty має найбільший сенс, якщо вам потрібен вбудований чат або якщо ви хочете дивитися на мобільному пристрої. KoalaSync більше підходить для вечірок у браузері на комп'ютері, де ви вже спілкуєтеся через Discord, Teamspeak або інший голосовий дзвінок і просто хочете, щоб відтворення залишалося синхронізованим.<br><br>Головною причиною, чому я створив KoalaSync, була гнучкість. Він призначений для роботи майже з будь-яким веб-сайтом, який використовує звичайний відеоплеєр браузера, а не лише з фіксованим списком платформ. Це включає самостійно розміщені налаштування, такі як Emby, Jellyfin та Plex, локальні/приватні домени та багато звичайних відеосторінок у браузері.",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Коли Teleparty все ще може мати сенс",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "Teleparty все ще може бути кращим вибором, якщо ви хочете, щоб чат був частиною самого інструменту спільного перегляду. KoalaSync наразі не має вбудованого чату. Він передбачає, що ви вже розмовляєте деінде, наприклад, через Discord, Teamspeak, WhatsApp, Signal або звичайний дзвінок.<br><br>Мобільні пристрої – ще одна важлива причина. Teleparty має додаток, тоді як KoalaSync наразі працює лише у браузерах на комп'ютері. Якщо ви хочете синхронізувати Netflix на телефоні або планшеті, KoalaSync зараз не є для цього правильним інструментом.<br><br>Тож, якщо чат і мобільна підтримка – це те, що вас найбільше хвилює, Teleparty може просто краще підійти для вашої конфігурації.",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "Коли KoalaSync може підійти краще",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "KoalaSync краще підходить, якщо вам потрібен гнучкий інструмент синхронізації браузера на робочому столі, а не щось, прив'язане до короткого списку платформ.<br><br>Він працює майже з будь-яким веб-сайтом, який використовує звичайний відеоплеєр браузера. Це особливо корисно для Emby, Jellyfin, Plex, приватних медіасерверів, локальних доменів або невеликих відеосайтів, які класичні інструменти для спільного перегляду зазвичай ігнорують.<br><br>Він також безкоштовний, з відкритим кодом, не вимагає облікових записів і може бути самостійно розміщений, якщо ви хочете запустити власне реле. Я створив його, бо хотів щось конфіденційне, що працювало б з моєю власною системою Emby, а не ще одну закриту платформу лише для кількох великих стрімінгових сайтів.",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "Основна відмінність",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty — це радше продукт для спільного перегляду з чатом та підтримкою мобільних пристроїв. KoalaSync — це радше гнучкий рівень синхронізації для відео в браузері.<br><br>Це звучить як невелика різниця, але вона значно змінює варіант використання. Якщо вам потрібен повноцінний додаток для спільного перегляду з чатом всередині, Teleparty має сенс. Якщо у вас вже є голосовий чат і ви просто хочете, щоб елементи керування відео синхронізувалися в різних браузерах, KoalaSync — це простіший варіант.",
+  "ALT_TELEPARTY_LIMITS_TITLE": "Чесні обмеження",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync — це не магія, і він не намагається приховати свої обмеження. Наразі він працює лише у браузерах для комп'ютерів. У нього немає вбудованого чату та мобільного додатку.<br><br>Сумісність також залежить від браузера та відеоплеєра. KoalaSync має працювати майже з будь-яким звичайним відеоплеєром браузера, але веб-сайти можуть будь-коли змінювати свої плеєри, поведінку DRM або обмеження браузера.<br><br>KoalaSync не пов'язаний з Netflix, Disney+, Prime Video, YouTube, Teleparty, Emby, Jellyfin, Plex або будь-яким іншим брендом, згаданим тут. Назви використовуються лише для пояснення типових випадків використання.",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "Короткий опис",
+  "ALT_TELEPARTY_SUMMARY_BODY": "Якщо вам потрібен вбудований чат або мобільна підтримка, Teleparty може бути кращим варіантом. Якщо вам потрібна безкоштовна синхронізація браузера з відкритим кодом для комп'ютера, яка працює майже з будь-яким звичайним відеоплеєром, включаючи власні медіасервери, такі як Emby, Jellyfin та Plex, KoalaSync, ймовірно, кращий варіант.",
+  "ALT_SCREEN_TITLE": "KoalaSync проти спільного використання екрана: коли синхронізація відео краща?",
+  "ALT_SCREEN_META_DESC": "Практичне порівняння KoalaSync та спільного використання екрана для віддалених кіновечорів, керування відтворенням, якості відео, конфіденційності, субтитрів та перегляду в браузері.",
+  "ALT_SCREEN_INTRO": "Спільний доступ до екрана працює, і іноді цього, чесно кажучи, достатньо. Одна людина показує свій екран, усі інші дивляться, і все.<br><br>Але для триваліших кіновечорів або перегляду епізодів разом це може дратувати. Якість відео залежить від завантаження користувача, процесора, браузера та будь-якого стиснення, яке застосовується в Discord, Teamspeak, Zoom або іншому додатку для дзвінків. Крім того, лише одна людина дійсно контролює відтворення.",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "Коли достатньо спільного доступу до екрана",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "Спільний доступ до екрана підходить, коли потрібно максимально швидко налаштувати відео. Якщо лише одна людина має доступ до нього, або всіх влаштовує одна людина, яка контролює відтворення, паузу та перемотування, це може бути найпростішим варіантом.<br><br>Це також має сенс, коли якість не має великого значення, коли нікому не потрібні власні субтитри чи налаштування звуку, і коли особа, яка надає доступ, почувається комфортно, показуючи це вікно браузера чи екран.",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Де спільний доступ до екрана стає дратуючим",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "Найбільшим недоліком є те, що не всі дивляться у своєму власному плеєрі. Одна людина транслює свій екран, а всі інші бачать лише цей потік.<br><br>Це може означати гіршу якість відео, стиснуте аудіо, затримку відтворення та менший контроль для всіх інших. Субтитри та аудіодоріжки також залежать від того, що вибрав користувач, який надає доступ.<br><br>Існує також питання конфіденційності. Якщо ви перемикаєте вікна або вкладки, люди можуть ненадовго побачити ваші вкладки браузера, електронну пошту, Reddit, чати чи інші приватні речі. Ви можете обійти це за допомогою окремого вікна, але це все одно те, про що вам доведеться подумати.",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "Чому KoalaSync може здаватися чистішим",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync не транслює ваш екран. Кожен дивиться відео локально у своєму браузері, і KoalaSync синхронізує лише дії відтворення, такі як відтворення, пауза та пошук.<br><br>Це означає, що кожен може використовувати повноекранний режим на своєму пристрої, використовувати власні налаштування субтитрів або аудіо, якщо плеєр їх підтримує, та зберігати голосовий чат окремо в Discord, Teamspeak або іншому дзвінку.<br><br>Для кіновечорів це може здаватися набагато чистішим, ніж коли одна людина транслює свій екран. Це особливо корисно для браузерних налаштувань, таких як Emby, Jellyfin, Plex, локальних файлів, відкритих у браузері, приватних доменів або інших веб-сайтів зі звичайними відеоплеєрами браузера.",
+  "ALT_SCREEN_LIMITS_TITLE": "Чесні обмеження",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync не замінює голосовий дзвінок. Якщо ви хочете розмовляти під час перегляду, ви все одно використовуєте Discord, Teamspeak, Signal, WhatsApp або будь-який інший додаток, який ви зазвичай використовуєте.<br><br>Кожному також потрібен доступ до відео або сторінки на власному пристрої. KoalaSync не обходить підписки, вхід, DRM, регіональні обмеження чи правила платформи.<br><br>Наразі він доступний лише для браузера на комп'ютері, не має вбудованої функції чату чи голосового зв'язку, а сумісність завжди залежить від браузера та відеоплеєра.",
+  "ALT_SCREEN_SUMMARY_TITLE": "Підсумок",
+  "ALT_SCREEN_SUMMARY_BODY": "Спільний доступ до екрана – це найпростіший варіант, коли ви просто хочете чогось швидкого і не дуже переймаєтеся якістю, конфіденційністю чи індивідуальним контролем. KoalaSync краще підходить, коли кожен має дивитися локально у своєму власному браузері, і сеанс має більше нагадувати спільний перегляд.",
+  "ALT_TRY_KOALASYNC": "Спробуйте KoalaSync"
 }
diff --git a/website/locales/zh.json b/website/locales/zh.json
index 511d783..0ad9bf4 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -177,5 +177,31 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync 不隶属于 Netflix、Disney+、Amazon、YouTube、Twitch 或任何其他流媒体平台，也不受其认可或关联。所有商标均为其各自所有者的财产。",
   "FOOTER_SUPPORT": "Support KoalaSync",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+    "ALT_TELEPARTY_TITLE": "KoalaSync 与 Teleparty：你应该选择哪款在线同步观影工具？",
+  "ALT_TELEPARTY_META_DESC": "针对 KoalaSync 和 Teleparty 的实用对比，涵盖内置聊天功能、移动端支持、浏览器视频同步、自建媒体服务器以及开源特性等方面。",
+  "ALT_TELEPARTY_INTRO": "KoalaSync 和 Teleparty 都能解决同一个令人头疼的问题：如何一起观看视频，而无需经历\u201c3、2、1，开始播放\u201d这种繁琐的同步步骤。只不过，它们采取了不同的实现方式。<br><br>如果你需要内置聊天功能或希望在移动设备上观看，Teleparty 是更合理的选择。KoalaSync 则更适合桌面浏览器观影场景——即你已经通过 Discord、TeamSpeak 或其他语音通话软件进行交流，只需确保视频播放保持同步即可。<br><br>我开发 KoalaSync 的主要初衷是为了灵活性。它旨在支持几乎所有使用标准浏览器视频播放器的网站，而不仅仅局限于特定的平台列表。这包括 Emby、Jellyfin 和 Plex 等自建媒体服务，本地/私有域名，以及浏览器中的各类常规视频页面。",
+  "ALT_TELEPARTY_WHEN_TELE_TITLE": "Teleparty 依然适用的场景",
+  "ALT_TELEPARTY_WHEN_TELE_BODY": "如果你希望聊天功能集成在观影工具本身之中，Teleparty 仍然是更好的选择。KoalaSync 目前没有内置聊天功能；它默认你已经在其他平台（如 Discord、TeamSpeak、WhatsApp、Signal 或常规通话）上进行交流。<br><br>移动端支持是另一个关键因素。Teleparty 拥有专属应用程序，而 KoalaSync 目前仅支持桌面浏览器。如果你想在手机或平板电脑上同步观看 Netflix，KoalaSync 暂时并不适用。<br><br>因此，如果你最看重聊天功能和移动端支持，Teleparty 可能会更适合你的使用需求。",
+  "ALT_TELEPARTY_WHEN_KOALA_TITLE": "KoalaSync 适用场景",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "如果您想要一款灵活的桌面浏览器同步工具，而不是受限于特定平台列表的软件，那么 KoalaSync 是更合适的选择。<br><br>它适用于几乎所有使用标准浏览器视频播放器的网站。对于 Emby、Jellyfin、Plex、私有媒体服务器、本地域或传统\u201c在线观影派对\u201d工具通常忽略的小型视频网站来说，这一点尤为实用。<br><br>此外，它完全免费且开源，无需注册账号；如果您希望运行自己的中继服务器，还可以选择自托管。我开发它的初衷是寻找一款既注重隐私又能与我自己的 Emby 系统兼容的工具，而不是那种仅针对少数几家大型流媒体平台的封闭式平台。",
+  "ALT_TELEPARTY_MAIN_DIFF_TITLE": "主要区别",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty 更侧重于提供包含聊天和移动端支持的\u201c观影派对\u201d体验；而 KoalaSync 则更像是一个针对浏览器视频的灵活同步层。<br><br>这听起来似乎差别不大，但实际上极大地改变了使用场景。如果您需要一个内置聊天功能的完整观影派对应用，Teleparty 是合理的选择；如果您已有语音聊天渠道，仅需保持各浏览器间的视频播放控制同步，那么 KoalaSync 则是更简洁适用的方案。",
+  "ALT_TELEPARTY_LIMITS_TITLE": "局限性说明",
+  "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync 并非万能，我们也坦诚其局限性。目前它仅支持桌面端浏览器，没有内置聊天功能，也没有移动端应用。<br><br>兼容性也取决于浏览器和视频播放器。虽然 KoalaSync 理论上支持几乎所有标准浏览器视频播放器，但网站随时可能更改其播放器、DRM（数字版权管理）机制或浏览器限制策略。<br><br>KoalaSync 与 Netflix、Disney+、Prime Video、YouTube、Teleparty、Emby、Jellyfin、Plex 或本文提及的任何其他品牌均无关联。提及这些名称仅为说明典型的使用场景。",
+  "ALT_TELEPARTY_SUMMARY_TITLE": "总结",
+  "ALT_TELEPARTY_SUMMARY_BODY": "如果您需要内置聊天功能或移动端支持，Teleparty 可能是更合适的选择。如果您想要一款免费、开源且基于桌面浏览器的同步工具，并希望它能兼容几乎所有常规视频播放器（包括 Emby、Jellyfin 和 Plex 等自建媒体服务器），那么 KoalaSync 恐怕更适合您。",
+  "ALT_SCREEN_TITLE": "KoalaSync 与屏幕共享：何时使用视频同步更佳？",
+  "ALT_SCREEN_META_DESC": "针对远程观影之夜，从播放控制、视频质量、隐私保护、字幕支持及浏览器观看体验等方面，对 KoalaSync 与屏幕共享进行实用对比。",
+  "ALT_SCREEN_INTRO": "屏幕共享确实可行，而且老实说，有时这就足够了。一人共享屏幕，其他人观看，搞定。<br><br>但在长时间观影或一起追剧时，它可能会让人感到烦恼。视频质量取决于共享者的上传带宽、CPU、浏览器，以及 Discord、Teamspeak、Zoom 或其他通话应用所采用的压缩算法。此外，实际上只有一个人能控制播放。",
+  "ALT_SCREEN_WHEN_ENOUGH_TITLE": "何时使用屏幕共享就足够了",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "如果您追求最快的设置速度，屏幕共享是个不错的选择。如果只有一个人能访问该视频……\u201c或者，如果大家都能接受由一个人来控制播放、暂停和进度跳转，那这可能是最简单的方案。<br><br>此外，如果画质要求不高，大家不需要各自独立的字幕或音频设置，且分享者也不介意展示自己的浏览器窗口或屏幕，那么这种方式也很合理。",
+  "ALT_SCREEN_WHEN_ANNOYING_TITLE": "屏幕共享可能带来的不便",
+  "ALT_SCREEN_WHEN_ANNOYING_BODY": "最大的弊端在于，并非每个人都在自己的播放器中观看。由一人流式传输屏幕画面，其他人只能观看该画面。<br><br>这意味着视频画质可能较差、音频经过压缩、播放存在延迟，且其他人缺乏控制权。字幕和音轨也完全取决于分享者的选择。<br><br>此外还涉及隐私问题。如果你切换窗口或标签页，其他人可能会短暂看到你的浏览器标签页、电子邮件、Reddit 页面、聊天记录或其他私密内容。虽然可以通过使用独立窗口来规避这一问题，但这仍是需要考虑的因素。",
+  "ALT_SCREEN_WHY_CLEANER_TITLE": "为何 KoalaSync 体验更清爽",
+  "ALT_SCREEN_WHY_CLEANER_BODY": "KoalaSync 不会流式传输你的屏幕画面。每个人都在自己的浏览器中本地观看视频，KoalaSync 仅负责同步播放、暂停和进度跳转等操作。<br><br>这意味着每个人都可以在自己的设备上使用全屏模式，在播放器支持的情况下使用各自偏好的字幕或音频设置，并保持语音聊天（如 Discord、TeamSpeak 或其他通话工具）的独立性。<br><br>对于观影聚会而言，这种方式比单人广播屏幕画面的体验要清爽得多。它特别适用于基于浏览器的方案，例如 Emby、Jellyfin、Plex、在浏览器中打开的本地文件、私有域网站，或其他使用标准浏览器视频播放器的网站。",
+  "ALT_SCREEN_LIMITS_TITLE": "客观存在的局限性",
+  "ALT_SCREEN_LIMITS_BODY": "KoalaSync 无法替代语音通话。如果您想在观看的同时进行交流，仍可使用 Discord、Teamspeak、Signal、WhatsApp 或您常用的任何通讯工具。<br><br>此外，每位参与者都需要在各自的设备上访问相应的视频或网页。KoalaSync 无法绕过订阅、登录验证、DRM（数字版权管理）、地域限制或平台规则。<br><br>该工具目前仅支持桌面端浏览器，不包含内置聊天或语音功能；其兼容性取决于具体的浏览器和视频播放器。",
+  "ALT_SCREEN_SUMMARY_TITLE": "摘要",
+  "ALT_SCREEN_SUMMARY_BODY": "如果您追求快速便捷，且不太在意画质、隐私或个性化控制，那么屏幕共享是最简单的选择。而当您希望每位参与者都在各自的浏览器中观看，并营造出一种真正\u201c共同观看\u201d的氛围时，KoalaSync 则是更理想的方案。",
+  "ALT_TRY_KOALASYNC": "试用 KoalaSync"
 }

From fe970de39a4de93f2361d992a4bfab0cd5194109 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 25 Jun 2026 03:50:00 +0200
Subject: [PATCH 033/151] =?UTF-8?q?fix(seo):=20add=20missing=20sitemap=20l?=
 =?UTF-8?q?ocale=20entries,=20swap=20KoalaSearching=E2=86=92RemoteProf=20o?=
 =?UTF-8?q?n=20alternatives=20index?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Add 39 missing language-specific sitemap entries for fr/es/it/.../uk
  alternatives pages (index, teleparty, screen-sharing)
- Replace KoalaSearching image with RemoteProf (professor koala)
  on the Guides & Comparisons overview page
- Update og:image, twitter:image, and img src accordingly
---
 website/alternatives/index.html    |   6 +-
 website/assets/NewLogoIcon_64.webp | Bin 1282 -> 1282 bytes
 website/sitemap.xml                | 858 +++++++++++++++++++++++++++++
 3 files changed, 861 insertions(+), 3 deletions(-)

diff --git a/website/alternatives/index.html b/website/alternatives/index.html
index 3b7b2da..e93fc99 100644
--- a/website/alternatives/index.html
+++ b/website/alternatives/index.html
@@ -34,13 +34,13 @@
     <meta property="og:url" content="https://sync.koalastuff.net/{{LANG_PREFIX}}alternatives">
     <meta property="og:title" content="{{ALT_INDEX_TITLE}}">
     <meta property="og:description" content="{{ALT_INDEX_META_DESC}}">
-    <meta property="og:image" content="https://sync.koalastuff.net/assets/KoalaSearching.webp">
+    <meta property="og:image" content="https://sync.koalastuff.net/assets/RemoteProf.webp">
 
     <!-- Twitter / X -->
     <meta name="twitter:card" content="summary_large_image">
     <meta name="twitter:title" content="{{ALT_INDEX_TITLE}}">
     <meta name="twitter:description" content="{{ALT_INDEX_META_DESC}}">
-    <meta name="twitter:image" content="https://sync.koalastuff.net/assets/KoalaSearching.webp">
+    <meta name="twitter:image" content="https://sync.koalastuff.net/assets/RemoteProf.webp">
 
     <!-- Structured Data (Schema.org) for Breadcrumbs -->
     <script type="application/ld+json">
@@ -121,7 +121,7 @@
     <main class="legal-content">
         <div class="legal-card" data-reveal style="padding: 2.5rem 2rem;">
             <div style="display: flex; justify-content: center;">
-                <img src="{{ASSET_PATH}}assets/KoalaSearching.webp" alt="Koala using magnifying glass" class="legal-mascot" width="180" height="180">
+                <img src="{{ASSET_PATH}}assets/RemoteProf.webp" alt="Koala teaching and explaining concepts" class="legal-mascot" width="180" height="180">
             </div>
             
             <h1>
diff --git a/website/assets/NewLogoIcon_64.webp b/website/assets/NewLogoIcon_64.webp
index b1f4e43ede2c8f7304360593b419303eb296c0d2..660ffe28987821948744dafb8543121d3c9924ee 100644
GIT binary patch
delta 175
zcmV;g08sye3W5r-j{*uRbh!h)p{C}lShJY|(*b{`0tbHB-=W1lvs8JmTg?5P$6NU|
zO#PNrF}c9Ck3x?#EFIFIEEWqqr&MVE&)R*f)BkMkZ`0M?cCguv<XEB~{|7sly8d~@
zRi#fP2}6F4`n*WOyWyO`=q~VL0Ooo5E9abon$}J<ILvCrjPmN9T=EIoYf$hn#5QI8
dPuCa041mkIUP&THprz?#XmVYp*&&Yr001i7TQdLv

delta 175
zcmV;g08sye3W5r-j{*uP3wTE6hMStHV6&M5(*b{}TcN{oo+V6*L_a%Yrc!p2D?t#c
zOKs7r7~J4m$Dv1=mJaDq77GQQQ>rw7XYD@K>HoHNx9RHcyI5?-@+?sg|AU>&-G4md
zD$=Kt1fjo2eO@GCUGUCe6T6+N5TM#$rGCu%%0C_&{K4-ZrketIuEE5-AGFN%Jt!V_
dA-)%z8o>$A#3xK?o>SG_`v#;TD2(v9006+KRrvq_

diff --git a/website/sitemap.xml b/website/sitemap.xml
index 1cb3f8b..a60ca4c 100644
--- a/website/sitemap.xml
+++ b/website/sitemap.xml
@@ -157,6 +157,864 @@
     <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives/screen-sharing"/>
     <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
   </url>
+  <url>
+    <loc>https://sync.koalastuff.net/fr/alternatives</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives"/>
+  </url>
+  <url>
+    <loc>https://sync.koalastuff.net/fr/alternatives/teleparty</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives/teleparty"/>
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+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
+  </url>
+  <url>
+    <loc>https://sync.koalastuff.net/uk/alternatives</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives"/>
+  </url>
+  <url>
+    <loc>https://sync.koalastuff.net/uk/alternatives/teleparty</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives/teleparty"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives/teleparty"/>
+  </url>
+  <url>
+    <loc>https://sync.koalastuff.net/uk/alternatives/screen-sharing</loc>
+    <lastmod>2026-06-24</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.7</priority>
+    <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="de" href="https://sync.koalastuff.net/de/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="fr" href="https://sync.koalastuff.net/fr/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="es" href="https://sync.koalastuff.net/es/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="pt-br" href="https://sync.koalastuff.net/pt-BR/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="ru" href="https://sync.koalastuff.net/ru/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="it" href="https://sync.koalastuff.net/it/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="pl" href="https://sync.koalastuff.net/pl/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="tr" href="https://sync.koalastuff.net/tr/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="nl" href="https://sync.koalastuff.net/nl/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="ja" href="https://sync.koalastuff.net/ja/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="ko" href="https://sync.koalastuff.net/ko/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="zh" href="https://sync.koalastuff.net/zh/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="uk" href="https://sync.koalastuff.net/uk/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="pt" href="https://sync.koalastuff.net/pt/alternatives/screen-sharing"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
+  </url>
   <url>
     <loc>https://sync.koalastuff.net/</loc>
     <lastmod>2026-06-23</lastmod>

From 3ccb967a454c89a305e95c72bf4f1637393f329c Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 25 Jun 2026 04:08:06 +0200
Subject: [PATCH 034/151] fix(l10n): add missing zh/uk language dropdown
 options to alternatives pages
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Add 中文 (Chinese) and Українська (Ukrainian) to the language
  selector in index, teleparty, and screen-sharing templates
- Previously only 13 of 15 languages were listed in the dropdown
---
 website/alternatives/index.html          | 2 ++
 website/alternatives/screen-sharing.html | 2 ++
 website/alternatives/teleparty.html      | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/website/alternatives/index.html b/website/alternatives/index.html
index e93fc99..623ae18 100644
--- a/website/alternatives/index.html
+++ b/website/alternatives/index.html
@@ -109,6 +109,8 @@
                         <option value="nl">🇳🇱 Nederlands</option>
                         <option value="ja">🇯🇵 日本語</option>
                         <option value="ko">🇰🇷 한국어</option>
+                        <option value="zh">🇨🇳 中文</option>
+                        <option value="uk">🇺🇦 Українська</option>
                         <option value="pt">🇵🇹 Português (Portugal)</option>
                     </select>
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" class="chevron-icon"><polyline points="6 9 12 15 18 9"/></svg>
diff --git a/website/alternatives/screen-sharing.html b/website/alternatives/screen-sharing.html
index 5ded34c..54dee7f 100644
--- a/website/alternatives/screen-sharing.html
+++ b/website/alternatives/screen-sharing.html
@@ -115,6 +115,8 @@
                         <option value="nl">🇳🇱 Nederlands</option>
                         <option value="ja">🇯🇵 日本語</option>
                         <option value="ko">🇰🇷 한국어</option>
+                        <option value="zh">🇨🇳 中文</option>
+                        <option value="uk">🇺🇦 Українська</option>
                         <option value="pt">🇵🇹 Português (Portugal)</option>
                     </select>
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" class="chevron-icon"><polyline points="6 9 12 15 18 9"/></svg>
diff --git a/website/alternatives/teleparty.html b/website/alternatives/teleparty.html
index 51ef580..c769d37 100644
--- a/website/alternatives/teleparty.html
+++ b/website/alternatives/teleparty.html
@@ -115,6 +115,8 @@
                         <option value="nl">🇳🇱 Nederlands</option>
                         <option value="ja">🇯🇵 日本語</option>
                         <option value="ko">🇰🇷 한국어</option>
+                        <option value="zh">🇨🇳 中文</option>
+                        <option value="uk">🇺🇦 Українська</option>
                         <option value="pt">🇵🇹 Português (Portugal)</option>
                     </select>
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" class="chevron-icon"><polyline points="6 9 12 15 18 9"/></svg>

From 7602bfdb2132df8e29717d93a8c957529a389add Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 25 Jun 2026 04:21:02 +0200
Subject: [PATCH 035/151] fix: preserve language in cross-links, add og:locale
 + Organization schema to alternatives
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Fix cross-links on teleparty↔screen-sharing pages: use
  {{LANG_PREFIX}} so German page links stay German, etc.
- Add og:locale meta tag with correct locale code per language
  (e.g. en_US, de_DE, fr_FR, ja_JP, zh_CN, uk_UA)
- Add Organization schema.org JSON-LD block alongside
  existing BreadcrumbList on all 3 alternatives templates
---
 website/alternatives/index.html          | 16 ++++++++++++++++
 website/alternatives/screen-sharing.html | 18 +++++++++++++++++-
 website/alternatives/teleparty.html      | 18 +++++++++++++++++-
 website/build.cjs                        |  9 +++++++++
 4 files changed, 59 insertions(+), 2 deletions(-)

diff --git a/website/alternatives/index.html b/website/alternatives/index.html
index 623ae18..1aca346 100644
--- a/website/alternatives/index.html
+++ b/website/alternatives/index.html
@@ -35,6 +35,7 @@
     <meta property="og:title" content="{{ALT_INDEX_TITLE}}">
     <meta property="og:description" content="{{ALT_INDEX_META_DESC}}">
     <meta property="og:image" content="https://sync.koalastuff.net/assets/RemoteProf.webp">
+    <meta property="og:locale" content="{{OG_LOCALE}}">
 
     <!-- Twitter / X -->
     <meta name="twitter:card" content="summary_large_image">
@@ -64,6 +65,21 @@
     }
     </script>
 
+    <!-- Organization Schema -->
+    <script type="application/ld+json">
+    {
+      "@context": "https://schema.org",
+      "@type": "Organization",
+      "name": "KoalaSync",
+      "url": "https://sync.koalastuff.net/",
+      "logo": "https://sync.koalastuff.net/assets/NewLogoIcon_128.webp",
+      "sameAs": [
+        "https://github.com/Shik3i/KoalaSync",
+        "https://mastodon.social/@koalastuff"
+      ]
+    }
+    </script>
+
     <!-- Mobile Browser Theme Styling -->
     <meta name="theme-color" content="#0f172a">
     <meta name="apple-mobile-web-app-capable" content="yes">
diff --git a/website/alternatives/screen-sharing.html b/website/alternatives/screen-sharing.html
index 54dee7f..75f5eaf 100644
--- a/website/alternatives/screen-sharing.html
+++ b/website/alternatives/screen-sharing.html
@@ -35,6 +35,7 @@
     <meta property="og:title" content="{{ALT_SCREEN_TITLE}}">
     <meta property="og:description" content="{{ALT_SCREEN_META_DESC}}">
     <meta property="og:image" content="https://sync.koalastuff.net/assets/PopcornFriends.webp">
+    <meta property="og:locale" content="{{OG_LOCALE}}">
 
     <!-- Twitter / X -->
     <meta name="twitter:card" content="summary_large_image">
@@ -70,6 +71,21 @@
     }
     </script>
 
+    <!-- Organization Schema -->
+    <script type="application/ld+json">
+    {
+      "@context": "https://schema.org",
+      "@type": "Organization",
+      "name": "KoalaSync",
+      "url": "https://sync.koalastuff.net/",
+      "logo": "https://sync.koalastuff.net/assets/NewLogoIcon_128.webp",
+      "sameAs": [
+        "https://github.com/Shik3i/KoalaSync",
+        "https://mastodon.social/@koalastuff"
+      ]
+    }
+    </script>
+
     <!-- Mobile Browser Theme Styling -->
     <meta name="theme-color" content="#0f172a">
     <meta name="apple-mobile-web-app-capable" content="yes">
@@ -173,7 +189,7 @@
             <div style="display: flex; flex-direction: column; align-items: center; justify-content: center; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--glass-border);">
                 <a href="{{ASSET_PATH}}" class="btn btn-primary" style="margin-bottom: 1.5rem;">{{ALT_TRY_KOALASYNC}}</a>
                 <p style="font-size: 0.9rem; text-align: center;">
-                    <a href="{{ASSET_PATH}}alternatives/teleparty" style="color: var(--accent); text-decoration: none;">{{ALT_TELEPARTY_TITLE}}</a>
+                    <a href="{{ASSET_PATH}}{{LANG_PREFIX}}alternatives/teleparty" style="color: var(--accent); text-decoration: none;">{{ALT_TELEPARTY_TITLE}}</a>
                 </p>
             </div>
 
diff --git a/website/alternatives/teleparty.html b/website/alternatives/teleparty.html
index c769d37..ee8d9b3 100644
--- a/website/alternatives/teleparty.html
+++ b/website/alternatives/teleparty.html
@@ -35,6 +35,7 @@
     <meta property="og:title" content="{{ALT_TELEPARTY_TITLE}}">
     <meta property="og:description" content="{{ALT_TELEPARTY_META_DESC}}">
     <meta property="og:image" content="https://sync.koalastuff.net/assets/ProContraKoala.webp">
+    <meta property="og:locale" content="{{OG_LOCALE}}">
 
     <!-- Twitter / X -->
     <meta name="twitter:card" content="summary_large_image">
@@ -70,6 +71,21 @@
     }
     </script>
 
+    <!-- Organization Schema -->
+    <script type="application/ld+json">
+    {
+      "@context": "https://schema.org",
+      "@type": "Organization",
+      "name": "KoalaSync",
+      "url": "https://sync.koalastuff.net/",
+      "logo": "https://sync.koalastuff.net/assets/NewLogoIcon_128.webp",
+      "sameAs": [
+        "https://github.com/Shik3i/KoalaSync",
+        "https://mastodon.social/@koalastuff"
+      ]
+    }
+    </script>
+
     <!-- Mobile Browser Theme Styling -->
     <meta name="theme-color" content="#0f172a">
     <meta name="apple-mobile-web-app-capable" content="yes">
@@ -173,7 +189,7 @@
             <div style="display: flex; flex-direction: column; align-items: center; justify-content: center; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--glass-border);">
                 <a href="{{ASSET_PATH}}" class="btn btn-primary" style="margin-bottom: 1.5rem;">{{ALT_TRY_KOALASYNC}}</a>
                 <p style="font-size: 0.9rem; text-align: center;">
-                    <a href="{{ASSET_PATH}}alternatives/screen-sharing" style="color: var(--accent); text-decoration: none;">{{ALT_SCREEN_TITLE}}</a>
+                    <a href="{{ASSET_PATH}}{{LANG_PREFIX}}alternatives/screen-sharing" style="color: var(--accent); text-decoration: none;">{{ALT_SCREEN_TITLE}}</a>
                 </p>
             </div>
 
diff --git a/website/build.cjs b/website/build.cjs
index e6b04ad..902e9a9 100644
--- a/website/build.cjs
+++ b/website/build.cjs
@@ -215,6 +215,15 @@ async function compile() {
         compiled = compiled.replace(/\{\{ALT_INDEX_TITLE\}\}/g, indexTitle);
         compiled = compiled.replace(/\{\{ALT_INDEX_META_DESC\}\}/g, indexDesc);
 
+        // og:locale mapping for Facebook
+        const ogLocales = {
+            en: 'en_US', de: 'de_DE', fr: 'fr_FR', es: 'es_ES',
+            'pt-BR': 'pt_BR', ru: 'ru_RU', it: 'it_IT', pl: 'pl_PL',
+            tr: 'tr_TR', nl: 'nl_NL', ja: 'ja_JP', ko: 'ko_KR',
+            zh: 'zh_CN', uk: 'uk_UA', pt: 'pt_PT'
+        };
+        compiled = compiled.replace(/\{\{OG_LOCALE\}\}/g, ogLocales[lang] || 'en_US');
+
         // Merge locale with English fallback for keys not present in current locale
         const mergedLocale = { ...englishLocale, ...locale };
         for (const [key, value] of Object.entries(mergedLocale)) {

From 4aa6f6d7a627131f19b49c63c2bd8e24291386d3 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 25 Jun 2026 04:28:41 +0200
Subject: [PATCH 036/151] fix: replace deprecated apple-mobile-web-app-capable
 with mobile-web-app-capable

Chrome 79+ shows deprecation warning for the apple- prefix.
Main template already uses the correct name; alternatives templates
were missed.
---
 website/alternatives/index.html          | 2 +-
 website/alternatives/screen-sharing.html | 2 +-
 website/alternatives/teleparty.html      | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/website/alternatives/index.html b/website/alternatives/index.html
index 1aca346..b598c43 100644
--- a/website/alternatives/index.html
+++ b/website/alternatives/index.html
@@ -82,7 +82,7 @@
 
     <!-- Mobile Browser Theme Styling -->
     <meta name="theme-color" content="#0f172a">
-    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="mobile-web-app-capable" content="yes">
     <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
 
     <script src="{{ASSET_PATH}}lang-init.min.js"></script>
diff --git a/website/alternatives/screen-sharing.html b/website/alternatives/screen-sharing.html
index 75f5eaf..7af893e 100644
--- a/website/alternatives/screen-sharing.html
+++ b/website/alternatives/screen-sharing.html
@@ -88,7 +88,7 @@
 
     <!-- Mobile Browser Theme Styling -->
     <meta name="theme-color" content="#0f172a">
-    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="mobile-web-app-capable" content="yes">
     <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
 
     <script src="{{ASSET_PATH}}lang-init.min.js"></script>
diff --git a/website/alternatives/teleparty.html b/website/alternatives/teleparty.html
index ee8d9b3..63f30c5 100644
--- a/website/alternatives/teleparty.html
+++ b/website/alternatives/teleparty.html
@@ -88,7 +88,7 @@
 
     <!-- Mobile Browser Theme Styling -->
     <meta name="theme-color" content="#0f172a">
-    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="mobile-web-app-capable" content="yes">
     <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
 
     <script src="{{ASSET_PATH}}lang-init.min.js"></script>

From 68027a21d5e340d0022def9b1efe4350ca44ead8 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 25 Jun 2026 04:29:24 +0200
Subject: [PATCH 037/151] fix: use absolute /version.json path to work on all
 page depths

The old logic only handled en='version.json' and non-en='../version.json',
which broke on /alternatives/ and /de/alternatives/ pages.
Absolute path works for root, /de/, /alternatives/, /de/alternatives/ etc.
---
 website/app.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/website/app.js b/website/app.js
index a6b5054..ac494c5 100644
--- a/website/app.js
+++ b/website/app.js
@@ -331,7 +331,7 @@ document.addEventListener('DOMContentLoaded', () => {
 
     const updateDynamicVersion = async () => {
         try {
-            const versionPath = document.documentElement.lang === 'en' ? 'version.json' : '../version.json';
+            const versionPath = '/version.json';
             const response = await fetch(versionPath);
             if (!response.ok) return;
             const data = await response.json();

From 2995afe970db38df73c259a18724d93f18979042 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 25 Jun 2026 23:22:26 +0200
Subject: [PATCH 038/151] docs: add host control mode branch overview, plan &
 edge-case log
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Planning docs for the optional per-room Host Control Mode (Teleparty-style
host-only playback control) requested via GitHub issue.

- host-control-mode-EDGECASES.md: canonical branch entry-point — goals, scope,
  trust model, architecture summary, 21 edge cases, test matrix, open decisions.
- host-control-mode-plan.md: layered implementation plan with concrete code hooks
  (server room state, three-layer gate, snap-back, guest desync flow, UI/i18n).

Temporary working docs for this branch; to be folded in or removed before merge.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/host-control-mode-EDGECASES.md | 212 ++++++++++++++++++++++++++++
 docs/host-control-mode-plan.md      | 122 ++++++++++++++++
 2 files changed, 334 insertions(+)
 create mode 100644 docs/host-control-mode-EDGECASES.md
 create mode 100644 docs/host-control-mode-plan.md

diff --git a/docs/host-control-mode-EDGECASES.md b/docs/host-control-mode-EDGECASES.md
new file mode 100644
index 0000000..884f0dd
--- /dev/null
+++ b/docs/host-control-mode-EDGECASES.md
@@ -0,0 +1,212 @@
+# Host Control Mode — Branch Overview, Goals & Edge Cases
+
+> **This is the canonical entry-point doc for branch `feature/host-control-mode`.**
+> If you're an agent or contributor picking this up: read this file first, then the
+> implementation plan in [`host-control-mode-plan.md`](./host-control-mode-plan.md).
+> Temporary working doc — delete or fold into permanent docs before merging to `main`.
+>
+> Status legend: 🔴 open / unresolved · 🟡 idea, needs testing · 🟢 decided
+
+---
+
+## 1. What this branch is for
+
+Origin: a GitHub feature request. When watching with larger groups, anyone can pause
+or seek and disrupt everyone else. The requester wants the room creator to optionally
+restrict control to a single **host**, the way Teleparty works — guests who try to
+pause get asked whether they want to pause *only their own* player (and desync), and
+otherwise get snapped back to the room's position.
+
+**Goal:** Add an optional per-room **Host Control Mode**. A room can be switched
+between:
+- **`everyone`** (default, current behavior): anyone can play/pause/seek for the room.
+- **`host-only`**: only the host drives the room. A guest's deliberate play/pause/seek
+  is not broadcast; instead they're snapped back to the room position — unless they
+  explicitly choose to desync (go solo) with a "Resync" escape hatch.
+
+## 2. Trust model (read this before over-engineering)
+
+This is **client-side trust, by design**. It's a watch party, not a security boundary.
+The point is preventing *accidental* and *casual* disruption, not stopping someone
+determined to patch their own extension. We do **not** add auth, tokens, or
+cryptographic host identity. `peerId` is unauthenticated and that's fine here.
+
+(We still gate server-side as the robust chokepoint — see plan — but that's about
+killing spam reliably, not about defeating a hostile client.)
+
+## 3. Scope / non-goals
+
+In scope:
+- Host designation (first joiner = host), mode toggle, host-only gating of all
+  room-moving events, guest snap-back, deliberate-desync flow + resync, host UI.
+
+Explicit non-goals (for this branch):
+- Authenticated / spoof-proof host identity.
+- Persistent host across server restarts (room state is in-memory).
+- Syncing around personalized ad breaks.
+- Host transfer UI (auto-fallback to `everyone` when host leaves; manual transfer
+  is a possible later add).
+
+## 4. Architecture summary
+
+Three-layer gate for room-moving events from a non-host in host-only mode
+(`PLAY`, `PAUSE`, `SEEK`, `FORCE_SYNC_PREPARE`, `FORCE_SYNC_EXECUTE`, `EPISODE_LOBBY`):
+1. **Server** — doesn't relay them (robust chokepoint, kills spam regardless of client).
+2. **Sender (guest)** — doesn't emit; shows confirm dialog / disables host-only buttons.
+3. **Receiver** — drops any that slip through (covers old/buggy/modified clients).
+
+Snap-back reuses the existing `_setSuppress` mechanism (content.js:442) so applying
+the room state programmatically doesn't echo back as a new event. Target position is
+extrapolated from the host's last known state (±1s). Full detail + code hooks in the
+plan doc.
+
+---
+
+## 5. The central challenge
+
+Everything hard about this feature reduces to **one question** (see EC-9):
+
+> How do we reliably tell a **deliberate** guest pause/seek from an **involuntary**
+> player/browser event (buffering, ads, tab throttling, source swaps, DRM hiccups)?
+
+If we get this wrong, guests get spammed with desync dialogs and snap-back loops for
+things they never did. The host/role plumbing is the easy part; this classifier is the
+real work. **Design the intent-classifier before writing the gate.**
+
+---
+
+## 6. Edge cases
+
+### EC-1 🔴 Buffering / loading fires a `pause` event
+content.js listens to `play`/`pause`/`seeked`/`loadeddata` only (content.js:1000-1003),
+not `waiting`/`stalled`. Pure HTML5 buffering fires `waiting` → harmless. But custom
+players (Netflix/YouTube/Twitch/JW) often call `video.pause()` during buffering/ads →
+real `pause` → guest gate would mis-classify as deliberate. Sub-cases: (a) initial load
+sits paused, no event, fine; (b) mid-stream stall, player-dependent; (c) seek-induced
+re-buffering may outlast the suppress window and leak. Mitigation: `isBuffering` flag
+from `waiting`/`playing`, or grace window; in host-only the guest's own state is
+irrelevant so just ignore involuntary pauses and let catch-up logic (content.js:489)
+re-sync them.
+
+### EC-2 🟢 Force-Sync / Episode-Lobby abuse by guests
+Guest could seek + spam Force-Sync to drag everyone, or spam Episode-Lobby to pause
+everyone. Decision: host-only blocks guest *initiation* of `FORCE_SYNC_*` and
+`EPISODE_LOBBY`; guests may only respond (`FORCE_SYNC_ACK`, `EPISODE_READY`). Guests'
+legitimate path is the personal "Resync" button.
+
+### EC-3 🟢 Host leaves the room
+Fall back to `controlMode = 'everyone'`, broadcast `CONTROL_MODE`. Never a stuck locked
+room. (Auto-promote next peer deferred.)
+
+### EC-4 🔴 Snap-back fight loop (pause/play/skip back/pause/play)
+Mashing controls or a janky player → each snap-back may emit events → ping-pong.
+Mitigation: cooldown (~600ms) after snap-back; ensure snap-back runs fully under
+suppress. Also: if target is unreachable (seek past buffered range), retry K times then
+give up — no infinite loop.
+
+### EC-5 🔴 Ad breaks (YouTube/Twitch/…)
+Mid-roll ads pause/swap the media element, differ per peer → desync is unavoidable and
+must NOT spam the dialog. Probably covered by EC-1 buffering grace; flag for explicit
+testing.
+
+### EC-6 🟡 Snap-back target accuracy
+No continuous room clock; extrapolate from host's `currentTime` + `lastHeartbeat`
+(±1s, worse if stale). The follow-up host correction must also be suppressed so it
+doesn't read as guest input.
+
+### EC-7 🟢 Old / buggy / modified guest client
+Covered by receiver-side + server-side gates.
+
+### EC-8 🔴 Tab throttling / background tab
+Backgrounding throttles timers and may pause media. There's existing
+`visibilityGraceUntil` handling for seeks (content.js:892). Confirm a
+background-induced pause isn't treated as deliberate in host-only; reuse the grace flag.
+
+### EC-9 🔴 What counts as "deliberate" — the central unresolved question
+Collapses EC-1/EC-5/EC-8. Candidate signals: `readyState`/`networkState`/`video.seeking`
+at event time; recent `waiting`; recent user gesture (`navigator.userActivation`,
+keydown/click); visibility/focus. Build one shared **intent-classifier** helper in
+content.js that all host-only gating flows through.
+
+### EC-10 🔴 Host brief disconnect / reconnect (network blip)
+Host's wifi drops for 3s and reconnects. With "host leaves → fallback to everyone",
+a blip would silently unlock the room and demote the host (peerId persists in
+chrome.storage so they rejoin with the same id, but the server already cleared
+`hostPeerId`). Mitigation idea: short **host grace period** (e.g. keep `hostPeerId`
+reserved for ~30s after disconnect; if the same peerId rejoins, restore host + mode).
+Needs the server reaper (server:644) and `removePeerFromRoom` (server:168) to cooperate.
+
+### EC-11 🔴 New guest joins mid-session in host-only mode
+On join they must (a) immediately sync to the host's current position without the host
+doing anything, and (b) see they're a guest in the UI. ROOM_DATA already carries peers;
+add `hostPeerId`/`controlMode` so a fresh client knows its role instantly. Verify the
+existing "newcomer syncs without waiting" path (content.js:542) still fires.
+
+### EC-12 🔴 Desync semantics — what does "solo" actually mean?
+When a guest chooses "pause only me", do they (a) fully ignore all subsequent host
+events until they Resync, or (b) keep receiving but not auto-applying? Define clearly.
+Proposed: full solo — ignore host play/pause/seek while desynced; Resync re-attaches and
+snaps to current host position. Also: what state does Resync land them in if the host is
+currently paused vs playing?
+
+### EC-13 🔴 Race: host flips to host-only exactly as a guest pauses
+Event ordering between `SET_CONTROL_MODE`/`CONTROL_MODE` and an in-flight guest `PAUSE`.
+The `seq` ordering helps, but define the tie-break. Likely: server is authoritative —
+once it has `host-only`, it drops the guest event regardless of client-side timing.
+
+### EC-14 🟡 Volume / mute / audio-options must NOT be gated
+Those are per-peer, not room control. The gate must target only play/pause/seek +
+forcesync/episode — not `PEER_STATUS` volume/mute fields. Easy to over-block; add a test.
+
+### EC-15 🔴 Live streams (Twitch live, live DVR)
+"Room timestamp" is fuzzy on live edge; seeking semantics differ. Decide whether
+host-only even makes sense for live, or degrade gracefully. Low priority but log it.
+
+### EC-16 🟡 Host's own involuntary events still drive the room
+If the host buffers and the player auto-pauses, that pause is "allowed" and pauses
+everyone. That's existing behavior, but in host-only it means the host's buffering
+stalls the whole room. Acceptable? Probably yes (host is authoritative), but note it.
+
+### EC-17 🟡 Server restart drops room state
+`hostPeerId`/`controlMode` are in-memory. After a server restart, whoever rejoins first
+becomes the new host and mode resets to `everyone`. Acceptable for now (non-goal), but
+document so it's not a surprise.
+
+### EC-18 🟡 Dialog dismissed without choosing
+Guest clicks away / presses Esc on the desync prompt. Default = treat as "No" → snap
+back. Make sure an un-answered dialog can't leave them in limbo (paused + not desynced +
+no dialog).
+
+### EC-19 🟡 Multiple video elements / element swap (SPA, ad → content)
+Players that swap the `<video>` element mid-session: re-attach handlers (content.js
+already re-binds on `loadeddata`) and make sure host-only gating follows the new element.
+
+### EC-20 🟡 Peer list shape (object vs legacy string)
+Throughout background.js peers may be objects or bare peerId strings
+(`typeof p === 'object' ? p.peerId : p`). All new `hostPeerId` comparisons must handle
+both forms, or we get a host that's never recognized.
+
+### EC-21 🟡 Mode toggle spam / rate limiting
+Host hammering the toggle → many `SET_CONTROL_MODE`. Covered by existing
+`checkEventRate` (server), but debounce in the UI and ignore no-op transitions.
+
+---
+
+## 7. Test matrix (fill in during dev)
+
+| Player            | Buffer→`pause`? | Ad behavior | Snap-back works? | Element swap? | Notes |
+|-------------------|-----------------|-------------|------------------|---------------|-------|
+| Generic HTML5     |                 |             |                  |               |       |
+| YouTube           |                 |             |                  |               |       |
+| Netflix           |                 |             |                  |               |       |
+| Twitch (VOD)      |                 |             |                  |               |       |
+| Twitch (live)     |                 |             |                  |               |       |
+| Disney+ / DRM     |                 |             |                  |               |       |
+| Jellyfin / Emby   |                 |             |                  |               |       |
+
+## 8. Open decisions to lock before/while coding
+- [ ] Intent-classifier signal set (EC-9) — design first.
+- [ ] Host grace period on disconnect, yes/no + duration (EC-10).
+- [ ] Desync semantics: full solo vs receive-only (EC-12).
+- [ ] Snap-back cooldown duration + retry cap (EC-4).
+- [ ] Does host-only apply to live streams or degrade (EC-15)?
diff --git a/docs/host-control-mode-plan.md b/docs/host-control-mode-plan.md
new file mode 100644
index 0000000..1e59836
--- /dev/null
+++ b/docs/host-control-mode-plan.md
@@ -0,0 +1,122 @@
+# Host Control Mode — Implementierungsplan
+
+Branch: `feature/host-control-mode`
+Issue: GitHub feature request (wasserrutschentester) — nur Host darf den Raum steuern; Gäste werden zurückgesnappt oder gehen bewusst in Desync.
+
+## Ziel
+
+Ein Raum kann zwischen zwei Modi umgeschaltet werden:
+- **`everyone`** (Default, heutiges Verhalten): jeder kann play/pause/seek für alle auslösen.
+- **`host-only`**: nur der Host steuert den Raum. Pause/Seek eines Gasts wird **nicht** gebroadcastet; stattdessen snappt die eigene Extension den Gast zurück auf den Raum-Zustand — es sei denn, der Gast entscheidet sich bewusst für Desync.
+
+Trust-Modell: client-seitig durchgesetzt. Kein Token, keine Auth. Es geht um versehentliches Stören, nicht um Angriffsschutz.
+
+---
+
+## Datenmodell
+
+### Server (`server/index.js`, Room-Objekt ~Z.331)
+Room bekommt zwei neue Felder:
+```js
+room = {
+  ...,
+  hostPeerId: peerId,        // gesetzt beim Anlegen = erster Joiner
+  controlMode: 'everyone',   // 'everyone' | 'host-only'
+}
+```
+- In `ROOM_DATA` (~Z.418) mitschicken: `hostPeerId`, `controlMode`.
+- Neues Event `SET_CONTROL_MODE` (siehe unten): nur akzeptieren, wenn `senderPeerId === room.hostPeerId`. Server setzt `room.controlMode`, broadcastet die Änderung an alle.
+- **Host-Migration:** in `removePeerFromRoom` (~Z.168) — wenn der gehende Peer `hostPeerId` war: entweder neuen Host bestimmen (nächster Peer) **oder** `controlMode` auf `everyone` zurückfallen lassen. → Entscheidung: **Fallback auf `everyone`** (simpel, nie verwaister gesperrter Raum). Optional später: Host-Transfer-Button.
+
+### Shared Constants (`shared/constants.js`)
+Neue Events im `EVENTS`-Objekt:
+```js
+SET_CONTROL_MODE: "set_control_mode",   // Client->Server: Host ändert Modus
+CONTROL_MODE: "control_mode",            // Server->Client: Modus geändert { controlMode, hostPeerId }
+```
+⚠️ Danach `node scripts/build-extension.cjs` laufen lassen (Single Source of Truth propagieren). Ggf. `PROTOCOL_VERSION` bumpen — **nein, nur wenn alte Clients brechen würden**. Da alles additiv ist und alte Clients die neuen Felder/Events einfach ignorieren, ist KEIN Protokoll-Bump nötig. (Alter Client in host-only-Raum kennt den Modus nicht und sendet weiter → Host-Extensions ignorieren fremde Events nicht... → siehe Edge Case 7. Evtl. doch Bump erwägen.)
+
+### Extension State (`background.js`)
+```js
+let controlMode = 'everyone';
+let hostPeerId = null;
+// abgeleitet: const amHost = () => hostPeerId === peerId;
+```
+Aus `ROOM_DATA` / `CONTROL_MODE` befüllen, in `chrome.storage.session` persistieren (wie `currentRoom`).
+
+---
+
+## Implementierung nach Schichten
+
+### 1. Server (`server/index.js`)
+- [ ] Room-Objekt um `hostPeerId` + `controlMode` erweitern (~Z.331).
+- [ ] `ROOM_DATA`-Payload erweitern (~Z.418).
+- [ ] Handler `SET_CONTROL_MODE`: validieren (Host-Check + Wert in {everyone, host-only}), setzen, `CONTROL_MODE` an Raum broadcasten.
+- [ ] Host-Migration in `removePeerFromRoom`: Fallback auf `everyone` + neues `CONTROL_MODE` broadcasten, wenn Host geht.
+- [ ] `SET_CONTROL_MODE` in die `relayEvents`-Liste? **Nein** — eigener Handler, da Sonderlogik + Host-Check. (relayEvents broadcastet blind.)
+
+### 2. Shared / Build
+- [ ] `EVENTS.SET_CONTROL_MODE`, `EVENTS.CONTROL_MODE` ergänzen.
+- [ ] `node scripts/build-extension.cjs`.
+
+### 3. background.js (Gast-Logik = Kern)
+- [ ] `controlMode` / `hostPeerId` aus `ROOM_DATA` (~Z.875) und neuem `CONTROL_MODE`-Case übernehmen + persistieren + an Popup/Content pushen.
+- [ ] **Emit-Gate** im SEND-Pfad (~Z.1786): bei `host-only && !amHost()` und action ∈ {play, pause, seek}:
+      - NICHT `emit`en.
+      - Stattdessen Content-Script anweisen: "snap back" ODER Desync-Confirm anzeigen.
+- [ ] **Snap-Back-Zielzeit berechnen:** aus Host-Peer-State (`playbackState`, `currentTime`, `lastHeartbeat`) extrapolieren:
+      `targetTime = host.currentTime + (host.playbackState==='playing' ? (now - host.lastHeartbeat)/1000 : 0)`.
+      Genauigkeit ~±1s, für Watchparty ok. (Force-Sync-Maschinerie als Referenz für Ziel-Zeit-Koordination.)
+- [ ] Nachricht an content.js: `{ type: 'HOST_BLOCK', action, targetTime, hostPlaybackState }`.
+
+### 4. content.js (Player-Reaktion + Dialog)
+- [ ] Handler für `HOST_BLOCK`: Confirm-Dialog im Player-Overlay rendern:
+      "Pause only your own player and desync from the group? [Yes] [No]".
+      - **No** (Default): Player via bestehende `_setSuppress`-Mechanik ([content.js:442](../extension/content.js:442)) wieder in Raum-Zustand zwingen (play + seek auf targetTime). Suppress verhindert Re-Broadcast.
+      - **Yes:** lokal pausiert lassen, `isDesynced = true` setzen, dezenten "Desynced — Resync"-Button zeigen.
+- [ ] "Resync"-Button → snappt zurück auf aktuelle Raum-Zeit, `isDesynced = false`.
+- [ ] **Loop-Schutz:** nach einer Snap-Back-Aktion kurzes Cooldown-Fenster (z.B. 600ms), in dem weitere lokale pause/seek-Events nicht erneut den Dialog triggern (verhindert pause→play→pause-Pingpong).
+
+### 5. popup (Host-UI)
+- [ ] Host-Toggle "Only I can control" (nur sichtbar wenn `amHost()`), sendet `SET_CONTROL_MODE`.
+- [ ] Rollen-Badge: "Host" / "Guest" + aktueller Modus.
+- [ ] Gast-Hinweis wenn host-only aktiv: "The host controls playback".
+- [ ] i18n-Keys in `extension/_locales` / `locales` für ~15 Sprachen.
+
+---
+
+## Edge Cases (Test-Checkliste)
+
+1. **Pause nicht verhinderbar, nur revidierbar** → kurzer Flicker (~½s) beim Gast ist erwartet/akzeptabel.
+2. **Snap-Back-Zielzeit** aus Heartbeat extrapoliert, ±1s. Bei stark veraltetem Host-State (kein Heartbeat) → letzten bekannten Wert nehmen.
+3. **Kampf-Loop pause/play/skip back/pause/play** → Cooldown-Fenster nach Snap-Back. Testen mit aggressivem Mashing.
+4. **Desync-Escape:** Gast kann bewusst pausieren (Klo/Telefon) → "Yes" → solo, dann Resync.
+5. **Host verlässt Raum** → Fallback auf `everyone`, alle bekommen `CONTROL_MODE`-Update. Testen: Host schließt Tab / Disconnect / Netzabbruch.
+6. **host-only + Episode-Auto-Sync / Force-Sync** (server/index.js:503-516): **Gast darf NICHT initiieren.** Force-Sync trägt eine `targetTime` und zwingt ALLE darauf (background.js:1261) — ein Gast könnte seeken → Force-Sync spammen und damit host-only komplett aushebeln. Episode-Lobby pausiert ebenfalls alle. → Im host-only-Modus dürfen `FORCE_SYNC_PREPARE`/`FORCE_SYNC_EXECUTE` und `EPISODE_LOBBY` nur vom Host **initiiert** werden. Gäste dürfen weiterhin nur **reagieren**: `FORCE_SYNC_ACK`, `EPISODE_READY`. Gäste brauchen Force-Sync nicht — ihr legitimer Fall ist der "Resync"-Button (snappt nur sie selbst, nicht alle).
+7. **Alter Client (ohne Feature) in host-only-Raum** → kennt Modus nicht, sendet weiter pause/seek → andere Extensions wenden es an. Mitigation: Empfänger-seitiges Gate (host-only-Clients ignorieren play/pause/seek von Nicht-Host) ODER `MIN_VERSION`/Protokoll-Bump. → **Empfehlung: zusätzlich Empfänger-seitig filtern** (robuster als nur Sender-Gate).
+8. **Seek getrennt von Pause** → host-only blockt auch Gast-Seeks, nicht nur Pausen.
+9. **Mehrere Tabs / Multi-Peer mit gleicher peerId** (Dedup, server:381) → Host-Identität bleibt an peerId hängen, ok.
+10. **DAU-Verwirrung** "warum kann ich nicht mehr pausieren?" → klare UI-Botschaft + der Desync-Dialog erklärt sich selbst.
+
+## Architektur-Entscheidung zu Edge Case 7 (wichtig)
+Wir setzen das Gate **doppelt** und über **alle raum-verschiebenden Events**, nicht nur play/pause/seek:
+Geblockte Initiierungen für Nicht-Host im host-only-Modus:
+`PLAY`, `PAUSE`, `SEEK`, `FORCE_SYNC_PREPARE`, `FORCE_SYNC_EXECUTE`, `EPISODE_LOBBY`.
+Weiterhin erlaubt für Gäste (reine Reaktion, verschiebt niemanden): `FORCE_SYNC_ACK`, `EPISODE_READY`, `PEER_STATUS`, `PING`/`PONG`.
+
+- **Sender-seitig** (Gast sendet erst gar nicht) → saubere UX, Confirm-Dialog bei play/pause/seek; Force-Sync-/Episode-Lobby-Buttons im Gast-UI deaktiviert/ausgeblendet.
+- **Empfänger-seitig** (in `handleServerEvent`, background.js:969 + Force-Sync-/Episode-Cases): wenn `host-only` und `data.senderId !== hostPeerId` → Event verwerfen (nicht an Content routen, keine State-Mutation).
+So sind auch alte/buggy/manipulierte Clients abgedeckt, ohne harten Protokoll-Bump.
+
+Optional zusätzlich **server-seitig** in den `relayEvents` (server/index.js:445): im host-only-Modus Initiierungs-Events von Nicht-Host gar nicht erst relayen. Spart Traffic + deckt alles zentral ab. Empfehlenswert, da der Server `hostPeerId`/`controlMode` ohnehin kennt.
+
+---
+
+## Reihenfolge der Umsetzung (kleine, testbare Schritte)
+1. Constants + Build (Events da, nichts kaputt).
+2. Server: hostPeerId/controlMode + ROOM_DATA + SET_CONTROL_MODE + Migration.
+3. background.js: State übernehmen + Empfänger-seitiges Gate (Edge 7) — testbar ohne UI.
+4. background.js: Sender-seitiges Gate + Snap-Back-Zielzeit.
+5. content.js: Snap-Back-Apply + Confirm-Dialog + Loop-Cooldown.
+6. popup: Host-Toggle + Badge + i18n.
+7. Durchtesten der Edge-Case-Liste auf YT / Netflix / generischem HTML5-Player.

From a968f708b33be0fd48b5a078ce7a8749ca367288 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 25 Jun 2026 23:27:19 +0200
Subject: [PATCH 039/151] feat(protocol): add host control mode events &
 constants
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Step 1 of host control mode. Adds the protocol surface only — no behavior yet:
- EVENTS.SET_CONTROL_MODE (client->server: host sets mode)
- EVENTS.CONTROL_MODE   (server->client: mode changed)
- CONTROL_MODES { EVERYONE, HOST_ONLY }

Purely additive; old clients ignore the new events. Propagated to
extension/shared via build-extension. Also records the audited design
decisions in the edge-case log.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/host-control-mode-EDGECASES.md | 28 ++++++++++++++++++++++------
 shared/constants.js                 | 12 ++++++++++++
 2 files changed, 34 insertions(+), 6 deletions(-)

diff --git a/docs/host-control-mode-EDGECASES.md b/docs/host-control-mode-EDGECASES.md
index 884f0dd..b1007a4 100644
--- a/docs/host-control-mode-EDGECASES.md
+++ b/docs/host-control-mode-EDGECASES.md
@@ -204,9 +204,25 @@ Host hammering the toggle → many `SET_CONTROL_MODE`. Covered by existing
 | Disney+ / DRM     |                 |             |                  |               |       |
 | Jellyfin / Emby   |                 |             |                  |               |       |
 
-## 8. Open decisions to lock before/while coding
-- [ ] Intent-classifier signal set (EC-9) — design first.
-- [ ] Host grace period on disconnect, yes/no + duration (EC-10).
-- [ ] Desync semantics: full solo vs receive-only (EC-12).
-- [ ] Snap-back cooldown duration + retry cap (EC-4).
-- [ ] Does host-only apply to live streams or degrade (EC-15)?
+## 8. Decisions (audited)
+- [x] **Intent-classifier (EC-9):** A `pause`/`seek` is **involuntary** if ANY of:
+  `readyState < 3`, `video.seeking`, a `waiting` fired < ~1500ms ago (`isBuffering`
+  flag), inside `visibilityGraceUntil`, OR no own-tracked user gesture
+  (`Date.now() - lastUserGestureAt < 1000`, via capturing keydown/pointerdown — do
+  NOT use sticky `navigator.userActivation.hasBeenActive`). Bias: only *clearly*
+  involuntary is ignored; everything else = deliberate. **Note:** in host-only the
+  guest never broadcasts anyway, so this only decides dialog-vs-silent — a UX call,
+  not a room-integrity call. Start simple, tune later.
+- [x] **Host grace on disconnect (EC-10): NOT in v1.** Immediate fallback to
+  `everyone` (EC-3). A grace window risks a multi-second hard-lock if the host never
+  returns. Revisit as polish once the core flow works.
+- [x] **Desync semantics (EC-12): full solo.** Ignore host play/pause/seek while
+  desynced; Resync snaps to host position + adopts host play/pause state. Desync
+  auto-clears on new media/episode. Requires a persistent, obvious "You are desynced"
+  UI.
+- [x] **Snap-back cooldown (EC-4): until-settled, not fixed.** Suppress re-trigger
+  until `readyState>=3 && playing && |Δt|<tol`, hard-cap ~1500ms. Retry target up to
+  3×, then give up (no infinite loop).
+- [x] **Live streams (EC-15): degrade.** Disable the gate when
+  `video.duration === Infinity`. Caveat: live-DVR may report finite duration and slip
+  through — acceptable for v1.
diff --git a/shared/constants.js b/shared/constants.js
index 40ddbce..f6016cc 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -33,6 +33,10 @@ export const EVENTS = {
     ROOM_DATA: "room_data", // Server -> Client: current room state
     ERROR: "error",
 
+    // Host Control Mode
+    SET_CONTROL_MODE: "set_control_mode", // Client -> Server: host sets room control mode ('everyone' | 'host-only')
+    CONTROL_MODE: "control_mode",          // Server -> Client: room control mode changed { controlMode, hostPeerId }
+
     // Media Control
     PLAY: "play",
     PAUSE: "pause",
@@ -57,6 +61,14 @@ export const EVENTS = {
     PONG: "pong"   // server responds with same { t } for client RTT calculation
 };
 
+// Room control modes (Host Control Mode feature).
+// NOTE: content.js does not import this module — it uses the string literals
+// 'everyone' / 'host-only' directly. Keep these values in sync there.
+export const CONTROL_MODES = {
+    EVERYONE: 'everyone',   // default: anyone can play/pause/seek for the room
+    HOST_ONLY: 'host-only'  // only the host drives the room
+};
+
 export const HEARTBEAT_INTERVAL = 15000; // 15s
 export const FORCE_SYNC_TIMEOUT = 8500; // 8.5s timeout for force sync ACKs (must be > content.js poll timeout of 8s)
 export const EPISODE_LOBBY_TIMEOUT = 60000; // 60s timeout for episode lobby

From 9f4be58172520dc0dff45d24cc3436d704f205b6 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 25 Jun 2026 23:30:57 +0200
Subject: [PATCH 040/151] =?UTF-8?q?feat(server):=20host=20control=20mode?=
 =?UTF-8?q?=20=E2=80=94=20room=20state,=20gate,=20toggle=20&=20host=20fall?=
 =?UTF-8?q?back?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Step 2 of host control mode (server-side, fully testable without UI):

- Room now tracks hostPeerId (= first joiner) and controlMode ('everyone' default).
- ROOM_DATA carries hostPeerId + controlMode so clients know their role on join.
- SET_CONTROL_MODE handler: host-only authority check, broadcasts CONTROL_MODE.
- Relay gate: in host-only mode, drop room-moving events (play/pause/seek/
  force-sync/episode-lobby) from non-host guests — robust chokepoint that kills
  spam regardless of client. Heartbeats/ACKs/episode-ready still pass.
- removePeerFromRoom: if the host leaves, fall back to 'everyone' and reassign
  host to the earliest remaining peer (v1: immediate, no grace period).

Extends the WS integration test suite to cover all of the above.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 scripts/test-server-ws.mjs | 36 ++++++++++++++++-
 server/index.js            | 81 +++++++++++++++++++++++++++++++++++---
 2 files changed, 110 insertions(+), 7 deletions(-)

diff --git a/scripts/test-server-ws.mjs b/scripts/test-server-ws.mjs
index 0da31c9..2aea846 100644
--- a/scripts/test-server-ws.mjs
+++ b/scripts/test-server-ws.mjs
@@ -58,6 +58,40 @@ try {
 
     close();
 
+    // --- Host Control Mode ---
+    const hrid = 'host-'+Date.now();
+    const h1 = await c(), h2 = await c();          // h1 = host (first joiner), h2 = guest
+    await j(h1, hrid, 'host1'); await j(h2, hrid, 'guest1'); h1._m.length = h2._m.length = 0;
+
+    // Host enables host-only -> both peers get the control_mode broadcast
+    s(h1,'set_control_mode',{controlMode:'host-only'});
+    await w(h1,'control_mode'); await w(h2,'control_mode');
+    h1._m.length = h2._m.length = 0;
+
+    // Guest's room-moving event (pause) is dropped -> host must NOT receive it
+    s(h2,'pause',{currentTime:5});
+    let guestPauseDropped = false; try { await w(h1,'pause',600); } catch { guestPauseDropped = true; }
+    assert.ok(guestPauseDropped, 'guest pause dropped in host-only');
+
+    // Host's own pause still relays to the guest
+    s(h1,'pause',{currentTime:7}); await w(h2,'pause');
+    h1._m.length = h2._m.length = 0;
+
+    // Guest cannot change the control mode -> no broadcast
+    s(h2,'set_control_mode',{controlMode:'everyone'});
+    let guestSetBlocked = false; try { await w(h1,'control_mode',600); } catch { guestSetBlocked = true; }
+    assert.ok(guestSetBlocked, 'non-host cannot set control mode');
+
+    // Host leaves -> room falls back to 'everyone' and reassigns host to the guest
+    s(h1,'leave_room',{});
+    let fb = null; const fbStart = Date.now();
+    while (Date.now()-fbStart < 2000 && !fb) {
+        for (let i=0;i<h2._m.length;i++){ const r=h2._m[i]; if(r.startsWith('42')){ const [e,dd]=JSON.parse(r.substring(2)); if(e==='control_mode'){ h2._m.splice(i,1); fb=dd; break; } } }
+        await new Promise(r=>setTimeout(r,50));
+    }
+    assert.ok(fb && fb.controlMode==='everyone' && fb.hostPeerId==='guest1', 'host leave -> fallback everyone + new host');
+    close();
+
     // --- Password room ---
     const prid = 'pw-'+Date.now();
     const pw1 = await c(); await j(pw1, prid, 'admin', 's3cret');
@@ -93,7 +127,7 @@ try {
         let d=''; res.on('data',c=>d+=c); res.on('end',()=>r([res.statusCode,JSON.parse(d)])); }));
     assert.equal(st,200); assert.equal(body.status,'online');
 
-    console.log('All 13 WebSocket integration tests passed');
+    console.log('All WebSocket integration tests passed (incl. host control mode)');
 } catch(e) {
     console.error('FAILED:', e.message);
     process.exitCode=1;
diff --git a/server/index.js b/server/index.js
index a8e78de..c7552d7 100644
--- a/server/index.js
+++ b/server/index.js
@@ -4,7 +4,7 @@ import { fileURLToPath } from 'url';
 import { Server } from 'socket.io';
 import crypto from 'crypto';
 import dotenv from 'dotenv';
-import { EVENTS, OFFICIAL_SERVER_TOKEN, PROTOCOL_VERSION } from '../shared/constants.js';
+import { EVENTS, OFFICIAL_SERVER_TOKEN, PROTOCOL_VERSION, CONTROL_MODES } from '../shared/constants.js';
 import {
     buildHealthPayload,
     checkCooldown,
@@ -148,6 +148,19 @@ const peerToSocket = new Map(); // peerId -> socketId (Global lookup)
 const roomCreationLocks = new Map(); // roomId -> Promise (prevents race on room creation)
 const peerJoinLocks = new Map(); // peerId -> Promise (prevents race on same peerId joins)
 
+// Host Control Mode: events a non-host guest may NOT initiate while a room is in
+// 'host-only' mode (they would move/disrupt everyone). Reactions like FORCE_SYNC_ACK,
+// EPISODE_READY, PEER_STATUS heartbeats remain allowed for all peers.
+const HOST_ONLY_GATED_EVENTS = new Set([
+    EVENTS.PLAY,
+    EVENTS.PAUSE,
+    EVENTS.SEEK,
+    EVENTS.FORCE_SYNC_PREPARE,
+    EVENTS.FORCE_SYNC_EXECUTE,
+    EVENTS.EPISODE_LOBBY,
+    EVENTS.EPISODE_LOBBY_CANCEL
+]);
+
 function log(type, message, details = '') {
     const debugLogging = process.env.DEBUG_LOGGING === '1';
     const isVerbose = type === 'CONN' || type === 'ROOM' || type === 'DEDUPE' || type === 'CORS' || type === 'ACKDROP';
@@ -201,6 +214,18 @@ function removePeerFromRoom(socketId, roomId, reason) {
         }
     }
 
+    // 3.6. Host Control Mode: if the host left (and isn't still connected via another
+    //      socket), fall back to 'everyone' so the room never gets stuck locked, and
+    //      reassign host to the earliest remaining peer so the feature stays usable.
+    //      (v1: immediate fallback, no grace period — see host-control-mode docs.)
+    if (!isPeerStillConnected && room.hostPeerId === peerId && room.peers.size > 0) {
+        const nextPeerData = room.peerData.values().next().value;
+        room.hostPeerId = nextPeerData ? nextPeerData.peerId : null;
+        room.controlMode = CONTROL_MODES.EVERYONE;
+        io.to(roomId).emit(EVENTS.CONTROL_MODE, { controlMode: room.controlMode, hostPeerId: room.hostPeerId });
+        log('ROOM', `Host left room ${roomId.substring(0, 3)}*** — fell back to 'everyone', new host: ${room.hostPeerId}`);
+    }
+
     // 4. Delete empty room
     if (room.peers.size === 0) {
         rooms.delete(roomId);
@@ -333,7 +358,10 @@ io.on('connection', (socket) => {
                             peers: new Set(),
                             peerIds: new Map(),
                             peerData: new Map(),
-                            lastActivity: Date.now()
+                            lastActivity: Date.now(),
+                            // Host Control Mode: creator (first joiner) is the host.
+                            hostPeerId: peerId,
+                            controlMode: CONTROL_MODES.EVERYONE
                         };
                         rooms.set(roomId, room);
                         createdByMe = true;
@@ -415,10 +443,12 @@ io.on('connection', (socket) => {
             peerToSocket.set(peerId, socket.id);
 
             socket.to(roomId).emit(EVENTS.PEER_STATUS, { peerId, username: username || null, tabTitle: tabTitle || null, mediaTitle: mediaTitle || null, status: 'joined' });
-            socket.emit(EVENTS.ROOM_DATA, { 
-                roomId, 
+            socket.emit(EVENTS.ROOM_DATA, {
+                roomId,
                 peers: Array.from(room.peers).map(sid => room.peerData.get(sid)),
-                activeLobby: room.activeLobby || null
+                activeLobby: room.activeLobby || null,
+                hostPeerId: room.hostPeerId || null,
+                controlMode: room.controlMode || CONTROL_MODES.EVERYONE
             });
             log('ROOM', `Peer ${peerId} joined: ${roomId.substring(0, 3)}***`);
             } finally {
@@ -458,7 +488,18 @@ io.on('connection', (socket) => {
                     const room = rooms.get(mapping.roomId);
                     if (room) {
                     room.lastActivity = Date.now();
-                    
+
+                    // --- Host Control Mode gate ---
+                    // In 'host-only' mode, drop room-moving events from non-host guests.
+                    // Robust chokepoint: independent of client behavior, kills spam (e.g.
+                    // a guest spamming FORCE_SYNC to drag everyone). Heartbeats/ACKs pass.
+                    if (room.controlMode === CONTROL_MODES.HOST_ONLY &&
+                        mapping.peerId !== room.hostPeerId &&
+                        HOST_ONLY_GATED_EVENTS.has(eventName)) {
+                        log('ROOM', `Dropped ${eventName} from guest ${mapping.peerId} in host-only room ${mapping.roomId.substring(0, 3)}***`);
+                        return;
+                    }
+
                     // --- S-2 & S-3: Sanitize ALL relay fields (strings, numbers, booleans) ---
                     const clamp    = (val, max) => typeof val === 'string' ? val.substring(0, max) : undefined;
                     const clampNum = (val, min, max) => typeof val === 'number' && Number.isFinite(val) ? Math.max(min, Math.min(max, val)) : undefined;
@@ -553,6 +594,34 @@ io.on('connection', (socket) => {
         }
     });
 
+    socket.on(EVENTS.SET_CONTROL_MODE, (data) => {
+        if (!checkEventRate(socket.id)) {
+            log('SECURITY', `Event rate limit exceeded for socket (SET_CONTROL_MODE): ${socket.id}`);
+            socket.disconnect(true);
+            return;
+        }
+        if (!data || typeof data !== 'object') return;
+        const mode = data.controlMode;
+        if (mode !== CONTROL_MODES.EVERYONE && mode !== CONTROL_MODES.HOST_ONLY) return;
+
+        const mapping = socketToRoom.get(socket.id);
+        if (!mapping) return;
+        const room = rooms.get(mapping.roomId);
+        if (!room) return;
+
+        // Only the host may change the control mode.
+        if (mapping.peerId !== room.hostPeerId) {
+            log('AUTH', `Non-host ${mapping.peerId} tried to set control mode in ${mapping.roomId.substring(0, 3)}***`);
+            return;
+        }
+        if (room.controlMode === mode) return; // no-op, ignore (UI debounce backstop)
+
+        room.controlMode = mode;
+        room.lastActivity = Date.now();
+        io.to(mapping.roomId).emit(EVENTS.CONTROL_MODE, { controlMode: mode, hostPeerId: room.hostPeerId });
+        log('ROOM', `Control mode set to '${mode}' by host in room ${mapping.roomId.substring(0, 3)}***`);
+    });
+
     socket.on(EVENTS.EVENT_ACK, (data) => {
         if (!checkEventRate(socket.id)) {
             log('SECURITY', `Event rate limit exceeded for socket (ACK): ${socket.id}`);

From 7b37d783b5d52d424cd0242fa860edda4d3579f6 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 04:04:54 +0200
Subject: [PATCH 041/151] feat(extension): host control mode wiring in
 background (step 3)

Background service worker now understands room control mode (no UI yet):

- Track controlMode + hostPeerId + amHost(); adopt from ROOM_DATA, update on
  CONTROL_MODE, restore from session storage, reset on leave/room-switch.
- Receiver-side gate: ignore room-moving events from non-host peers in host-only
  mode (backstop for old/buggy/modified clients past the server gate).
- Sender-side gate: a guest's play/pause/seek/force-sync is not broadcast;
  instead a HOST_BLOCKED message is sent to the content tab with an extrapolated
  host sync target (hook for step 4's snap-back + desync dialog).
- broadcastControlMode() notifies popup + content tab; GET_STATUS exposes
  controlMode/hostPeerId/amHost; new SET_CONTROL_MODE message lets the host toggle.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/background.js | 110 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 107 insertions(+), 3 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 04b78e4..7e0f95e 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1,4 +1,4 @@
-import { EVENTS, PROTOCOL_VERSION, OFFICIAL_SERVER_URL, OFFICIAL_SERVER_TOKEN, EPISODE_LOBBY_TIMEOUT, FORCE_SYNC_TIMEOUT } from './shared/constants.js';
+import { EVENTS, CONTROL_MODES, PROTOCOL_VERSION, OFFICIAL_SERVER_URL, OFFICIAL_SERVER_TOKEN, EPISODE_LOBBY_TIMEOUT, FORCE_SYNC_TIMEOUT } from './shared/constants.js';
 import { generateUsername } from './shared/names.js';
 import { loadLocale, getMessage, getSystemLanguage } from './i18n.js';
 import { sameEpisode } from './episode-utils.js';
@@ -70,6 +70,29 @@ let isNamespaceJoined = false;
 let lastActionState = { action: null, senderId: null, timestamp: 0, acks: [] };
 let localSeq = 0;                         // Monotonically increasing command sequence for this peer
 const lastSeqBySender = {};               // senderId → last received seq (stale command guard)
+
+// --- Host Control Mode ---
+let controlMode = CONTROL_MODES.EVERYONE;  // 'everyone' | 'host-only'
+let hostPeerId = null;                     // peerId of the room host (creator / fallback)
+function amHost() { return !!peerId && hostPeerId === peerId; }
+// Room-moving actions a guest may not initiate while in host-only mode.
+const HOST_ONLY_GATED_ACTIONS = [
+    EVENTS.PLAY, EVENTS.PAUSE, EVENTS.SEEK,
+    EVENTS.FORCE_SYNC_PREPARE, EVENTS.FORCE_SYNC_EXECUTE,
+    EVENTS.EPISODE_LOBBY, EVENTS.EPISODE_LOBBY_CANCEL
+];
+// Best-effort estimate of where the room (host) is right now, for guest snap-back.
+// Extrapolates from the host peer's last known state (±~1s). Used by content.js.
+function getHostSyncTarget() {
+    if (!currentRoom || !Array.isArray(currentRoom.peers)) return null;
+    const host = currentRoom.peers.find(p => (typeof p === 'object' ? p.peerId : p) === hostPeerId);
+    if (!host || typeof host !== 'object') return null;
+    let targetTime = typeof host.currentTime === 'number' ? host.currentTime : null;
+    if (targetTime !== null && host.playbackState === 'playing' && host.lastHeartbeat) {
+        targetTime += Math.max(0, (Date.now() - host.lastHeartbeat) / 1000);
+    }
+    return { playbackState: host.playbackState || null, targetTime };
+}
 const activePorts = new Set();            // New: track active content ports for keep-alive
 let expectedAcksCount = 0;                // Snapshot of peerCount when initiating Force Sync
 
@@ -123,7 +146,12 @@ function ensureState() {
                 // New entries (added during boot) must stay at the top (index 0)
                 if (data.logs) logs = [...logs, ...data.logs].slice(0, 200);
                 if (data.history) history = [...history, ...data.history].slice(0, 20);
-                if (data.currentRoom) currentRoom = data.currentRoom;
+                if (data.currentRoom) {
+                    currentRoom = data.currentRoom;
+                    // Host Control Mode: restore role/mode from persisted room.
+                    controlMode = currentRoom.controlMode || CONTROL_MODES.EVERYONE;
+                    hostPeerId = currentRoom.hostPeerId || null;
+                }
                 if (data.lastActionState) lastActionState = data.lastActionState;
                 
                 if (data.eventQueue) eventQueue = [...eventQueue, ...data.eventQueue].slice(0, 50);
@@ -435,6 +463,8 @@ async function leaveRoomAfterIdleGrace(reason) {
     emit(EVENTS.LEAVE_ROOM, { peerId });
     forceDisconnect();
     currentRoom = null;
+    controlMode = CONTROL_MODES.EVERYONE;
+    hostPeerId = null;
     currentTabId = null;
     currentTabTitle = null;
     roomIdleSince = null;
@@ -638,6 +668,17 @@ async function connect() {
 }
 
 
+function broadcastControlMode() {
+    // Notify popup (role badge / host toggle) and the active content tab
+    // (so it can enable/disable the host-only guest gate).
+    const payload = { type: 'CONTROL_MODE', controlMode, hostPeerId, amHost: amHost() };
+    chrome.runtime.sendMessage(payload).catch(() => {});
+    if (currentTabId) {
+        const tabId = parseInt(currentTabId);
+        if (!isNaN(tabId)) chrome.tabs.sendMessage(tabId, payload).catch(() => {});
+    }
+}
+
 function broadcastConnectionStatus(status) {
     // No room and no intent to connect → this isn't a failure, it's the normal
     // resting state. Surface a distinct 'idle' status so the UI can say
@@ -871,9 +912,22 @@ function handleServerEvent(event, data) {
         addLog(`Ignored server event ${event} due to empty payload`, 'warn');
         return;
     }
+    // Host Control Mode (receiver-side backstop): in host-only mode, ignore
+    // room-moving events from any non-host peer. The server already drops these,
+    // so this covers old/buggy/modified clients that slipped through.
+    if (controlMode === CONTROL_MODES.HOST_ONLY &&
+        HOST_ONLY_GATED_ACTIONS.includes(event) &&
+        data.senderId && data.senderId !== hostPeerId) {
+        addLog(`Ignored ${event} from non-host ${data.senderId} (host-only)`, 'warn');
+        return;
+    }
     switch (event) {
         case EVENTS.ROOM_DATA:
             currentRoom = data;
+            // Host Control Mode: adopt room role/mode on (re)join.
+            controlMode = data.controlMode || CONTROL_MODES.EVERYONE;
+            hostPeerId = data.hostPeerId || null;
+            broadcastControlMode();
             markRoomPotentiallyIdle();
             if (currentRoom && Array.isArray(currentRoom.peers)) {
                 currentRoom.peers = currentRoom.peers.map(p => typeof p === 'object' ? createPeerData(p) : { peerId: p, username: null, tabTitle: null, mediaTitle: null, playbackState: null, currentTime: null, volume: null, muted: null, lastHeartbeat: Date.now() });
@@ -931,6 +985,18 @@ function handleServerEvent(event, data) {
                 });
             });
             break;
+        case EVENTS.CONTROL_MODE:
+            // Host Control Mode changed (toggle or host-leave fallback).
+            controlMode = data.controlMode || CONTROL_MODES.EVERYONE;
+            hostPeerId = data.hostPeerId || null;
+            if (currentRoom) {
+                currentRoom.controlMode = controlMode;
+                currentRoom.hostPeerId = hostPeerId;
+                if (storageInitialized) chrome.storage.session.set({ currentRoom });
+            }
+            addLog(`Control mode: ${controlMode}${amHost() ? ' (you are host)' : ''}`, 'info');
+            broadcastControlMode();
+            break;
         case EVENTS.ROOM_LIST:
             chrome.runtime.sendMessage({ type: 'ROOM_LIST', rooms: data.rooms }).catch(() => {});
             break;
@@ -1485,6 +1551,8 @@ function leaveOldRoomIfSwitching(newRoomId) {
         addLog(`Switching rooms: leaving ${currentRoom.roomId} to join ${newRoomId}`, 'info');
         forceDisconnect();
         currentRoom = null;
+        controlMode = CONTROL_MODES.EVERYONE;
+        hostPeerId = null;
         if (storageInitialized) chrome.storage.session.set({ currentRoom: null });
         chrome.runtime.sendMessage({ type: 'PEER_UPDATE', peers: [] }).catch(() => {});
 
@@ -1596,8 +1664,25 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             version: chrome.runtime.getManifest().version,
             protocolVersion: PROTOCOL_VERSION,
             roomPassword: currentRoom ? currentRoom.password : null,
-            ping: currentPingMs
+            ping: currentPingMs,
+            controlMode,
+            hostPeerId,
+            amHost: amHost()
         });
+    } else if (message.type === 'SET_CONTROL_MODE') {
+        // Popup (host) toggles the room control mode. Server validates host authority
+        // and broadcasts CONTROL_MODE back, which updates our local state + UI.
+        const mode = message.controlMode;
+        if (mode !== CONTROL_MODES.EVERYONE && mode !== CONTROL_MODES.HOST_ONLY) {
+            sendResponse({ status: 'invalid' });
+            return;
+        }
+        if (!amHost()) {
+            sendResponse({ status: 'not_host' });
+            return;
+        }
+        emit(EVENTS.SET_CONTROL_MODE, { controlMode: mode });
+        sendResponse({ status: 'ok' });
     } else if (message.type === 'LEAVE_ROOM') {
         connectIntent = false;
         reconnectFailed = false;
@@ -1606,6 +1691,8 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         resetAudioProcessingInTab(currentTabId);
         emit(EVENTS.LEAVE_ROOM, { peerId });
         currentRoom = null;
+        controlMode = CONTROL_MODES.EVERYONE;
+        hostPeerId = null;
         currentTabId = null;
         currentTabTitle = null;
         roomIdleSince = null;
@@ -1726,6 +1813,23 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         });
     } else if (message.type === 'CONTENT_EVENT') {
         const processEvent = () => {
+            // Host Control Mode (sender-side): a guest in host-only mode must not
+            // drive the room. Don't broadcast; hand the action back to content.js so
+            // it can snap the local player back (and, in step 4, offer desync).
+            if (controlMode === CONTROL_MODES.HOST_ONLY && !amHost() &&
+                HOST_ONLY_GATED_ACTIONS.includes(message.action)) {
+                addLog(`Host-only: blocked local ${message.action} (you are a guest)`, 'warn');
+                if (sender.tab && sender.tab.id) {
+                    chrome.tabs.sendMessage(sender.tab.id, {
+                        type: 'HOST_BLOCKED',
+                        action: message.action,
+                        target: getHostSyncTarget()
+                    }).catch(() => {});
+                }
+                sendResponse({ status: 'blocked_host_only' });
+                return;
+            }
+
             // Live solo check — recomputed from the current peer list on every
             // event (the list is updated synchronously on PEER_STATUS join/leave),
             // never cached, so the instant a peer joins we resume sending.

From f9dc9d401773b19646c4d707db88e5e1649f1b42 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 04:10:15 +0200
Subject: [PATCH 042/151] feat(extension): host control mode guest UX in
 content script (step 4)

Guest-side handling when a room is in host-only mode:

- Intent classifier (EC-9): tells a deliberate guest pause/seek from an
  involuntary one (buffering/seeking/tab-refocus/no recent gesture) via
  readyState, video.seeking, a 'waiting' buffering-grace window, the existing
  visibility grace, and own-tracked keydown/pointerdown gestures.
- HOST_BLOCKED handler: live streams are left alone (EC-15); involuntary events
  snap back silently; deliberate events show a Teleparty-style choice dialog
  (Stay in sync / Watch on my own), defaulting to stay after 8s (EC-18).
- Snap-back reuses tryMediaAction + suppress, with a cooldown to avoid
  pause/play fight loops (EC-4).
- Desync ("watch on my own") mode: persistent resync badge, ignores host
  commands while solo (still ACKs so force-sync doesn't stall), and auto-clears
  on episode change (EC-12). Resync pulls the host's extrapolated position.
- background: GET_CONTROL_MODE (init fetch) + REQUEST_HOST_SYNC (resync target).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/background.js |   6 ++
 extension/content.js    | 200 +++++++++++++++++++++++++++++++++++++++-
 2 files changed, 205 insertions(+), 1 deletion(-)

diff --git a/extension/background.js b/extension/background.js
index 7e0f95e..c5a04ee 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1683,6 +1683,12 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         }
         emit(EVENTS.SET_CONTROL_MODE, { controlMode: mode });
         sendResponse({ status: 'ok' });
+    } else if (message.type === 'GET_CONTROL_MODE') {
+        // content.js asks for current mode/role (e.g. injected after ROOM_DATA).
+        sendResponse({ controlMode, hostPeerId, amHost: amHost() });
+    } else if (message.type === 'REQUEST_HOST_SYNC') {
+        // content.js resync: hand back the host's extrapolated current position.
+        sendResponse({ target: getHostSyncTarget() });
     } else if (message.type === 'LEAVE_ROOM') {
         connectIntent = false;
         reconnectFailed = false;
diff --git a/extension/content.js b/extension/content.js
index 380ce54..2cffa76 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -102,6 +102,155 @@
         }
     });
 
+    // --- Host Control Mode (guest-side) ---
+    // When a room is in 'host-only' mode and we're a guest, a deliberate local
+    // pause/seek must not drive the room (background/server already drop it). Here
+    // we handle the *local* UX: snap back to the host's position, or — if the user
+    // really wants to — let them go solo (desync) with a resync escape hatch.
+    let hcmControlMode = 'everyone';   // mirror of room control mode
+    let hcmAmHost = false;             // are we the host?
+    let hcmDesynced = false;           // user chose to go solo
+    let hcmSnapBackCooldownUntil = 0;  // suppress re-trigger right after a snap-back
+    let hcmLastUserGestureAt = 0;      // for deliberate-vs-involuntary classification
+    let hcmBufferingUntil = 0;         // set on 'waiting' — buffering grace window
+    const HCM_USER_GESTURE_MS = 1000;
+    const HCM_BUFFERING_GRACE_MS = 1500;
+    const HCM_SNAP_BACK_COOLDOWN_MS = 1000;
+
+    // Track genuine user input so we can tell a deliberate pause/seek from a
+    // player-/browser-initiated one. Capturing + passive so we never interfere.
+    const _hcmGesture = () => { hcmLastUserGestureAt = Date.now(); };
+    document.addEventListener('keydown', _hcmGesture, { capture: true, passive: true });
+    document.addEventListener('pointerdown', _hcmGesture, { capture: true, passive: true });
+
+    function hcmIsGuestGated() {
+        return hcmControlMode === 'host-only' && !hcmAmHost;
+    }
+
+    // EC-9 intent classifier: only a *clearly deliberate* guest action triggers the
+    // dialog/snap-back. Anything that smells involuntary (buffering, seeking, tab
+    // refocus, no recent gesture) is treated as involuntary. Bias intentional —
+    // in host-only the guest never broadcasts anyway, so this only tunes UX.
+    function hcmClassifyIntent() {
+        const video = findVideo();
+        if (!video) return 'involuntary';
+        if (video.duration === Infinity) return 'live';        // EC-15: degrade, don't gate
+        if (video.readyState < 3) return 'involuntary';        // buffering / not enough data
+        if (video.seeking) return 'involuntary';
+        if (Date.now() < hcmBufferingUntil) return 'involuntary';
+        if (Date.now() < visibilityGraceUntil) return 'involuntary';
+        if (Date.now() - hcmLastUserGestureAt > HCM_USER_GESTURE_MS) return 'involuntary';
+        return 'deliberate';
+    }
+
+    // Snap the local player back to the host's current position/state.
+    function hcmSnapBackToHost(target) {
+        if (hcmDesynced) return; // user opted out — never yank them back automatically
+        hcmSnapBackCooldownUntil = Date.now() + HCM_SNAP_BACK_COOLDOWN_MS;
+        const video = findVideo();
+        if (!video) return;
+        if (target && Number.isFinite(target.targetTime)) {
+            tryMediaAction(EVENTS.SEEK, { targetTime: target.targetTime });
+        }
+        // Adopt the host's play/pause state (default: resume playing).
+        if (target && target.playbackState === 'paused') {
+            tryMediaAction(EVENTS.PAUSE);
+        } else {
+            tryMediaAction(EVENTS.PLAY);
+        }
+        reportLog('Host-only: snapped back to host position', 'info');
+    }
+
+    // Entry point: background told us our local action was blocked in host-only.
+    function hcmHandleBlocked(action, target) {
+        if (!hcmIsGuestGated()) return;
+        if (Date.now() < hcmSnapBackCooldownUntil) return; // EC-4 loop guard
+        if (hcmDesynced) return; // already solo, nothing to do
+
+        const intent = hcmClassifyIntent();
+        if (intent === 'live') return;          // EC-15: leave the guest alone on live
+        if (intent === 'involuntary') {
+            // Buffering/ads/throttle — silently re-sync, no dialog spam.
+            hcmSnapBackToHost(target);
+            return;
+        }
+        // Deliberate: offer the choice (Teleparty-style), default = snap back.
+        hcmShowDesyncDialog(action, target);
+    }
+
+    // --- Minimal in-page UI (dialog + persistent desync badge) ---
+    const HCM_UI_ID = 'koalasync-hcm-dialog';
+    const HCM_BADGE_ID = 'koalasync-hcm-badge';
+
+    function hcmRemoveDialog() {
+        const el = document.getElementById(HCM_UI_ID);
+        if (el) el.remove();
+    }
+
+    function hcmShowDesyncDialog(action, target) {
+        if (!document.body) { hcmSnapBackToHost(target); return; }
+        hcmRemoveDialog();
+        const wrap = document.createElement('div');
+        wrap.id = HCM_UI_ID;
+        wrap.setAttribute('role', 'dialog');
+        wrap.style.cssText = 'position:fixed;z-index:2147483647;left:50%;bottom:32px;transform:translateX(-50%);background:#1f2937;color:#f9fafb;font:14px/1.4 system-ui,sans-serif;padding:16px 18px;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.45);max-width:360px;border:1px solid #374151';
+        const verb = action === EVENTS.SEEK ? 'jumped' : 'paused';
+        wrap.innerHTML =
+            '<div style="font-weight:600;margin-bottom:6px">KoalaSync · Host controls this room</div>' +
+            `<div style="margin-bottom:12px;color:#d1d5db">You ${verb} your player. Only the host can control the group. Keep watching together, or watch on your own?</div>` +
+            '<div style="display:flex;gap:8px;justify-content:flex-end">' +
+            `<button id="${HCM_UI_ID}-solo" style="background:#374151;color:#f9fafb;border:0;padding:8px 12px;border-radius:8px;cursor:pointer">Watch on my own</button>` +
+            `<button id="${HCM_UI_ID}-stay" style="background:#10b981;color:#062a20;border:0;padding:8px 12px;border-radius:8px;cursor:pointer;font-weight:600">Stay in sync</button>` +
+            '</div>';
+        document.body.appendChild(wrap);
+
+        let settled = false;
+        const stay = () => { if (settled) return; settled = true; hcmRemoveDialog(); hcmSnapBackToHost(target); };
+        const solo = () => { if (settled) return; settled = true; hcmRemoveDialog(); hcmEnterDesync(); };
+        wrap.querySelector(`#${HCM_UI_ID}-stay`).addEventListener('click', stay);
+        wrap.querySelector(`#${HCM_UI_ID}-solo`).addEventListener('click', solo);
+        // EC-18: if the user ignores the prompt, default to staying in sync.
+        setTimeout(() => { if (!settled) stay(); }, 8000);
+    }
+
+    function hcmEnterDesync() {
+        hcmDesynced = true;
+        reportLog('Host-only: you chose to watch on your own (desynced)', 'warn');
+        hcmShowBadge();
+    }
+
+    function hcmExitDesync() {
+        hcmDesynced = false;
+        hcmRemoveBadge();
+        // Resync: ask background for the host's current position and snap to it.
+        chrome.runtime.sendMessage({ type: 'REQUEST_HOST_SYNC' }, (res) => {
+            if (chrome.runtime.lastError) return;
+            if (res && res.target) hcmSnapBackToHost(res.target);
+        });
+        reportLog('Host-only: resynced with the host', 'info');
+    }
+
+    function hcmShowBadge() {
+        if (document.getElementById(HCM_BADGE_ID) || !document.body) return;
+        const b = document.createElement('div');
+        b.id = HCM_BADGE_ID;
+        b.style.cssText = 'position:fixed;z-index:2147483646;right:16px;bottom:16px;background:#b45309;color:#fff;font:13px/1.3 system-ui,sans-serif;padding:8px 12px;border-radius:10px;box-shadow:0 6px 20px rgba(0,0,0,.4);cursor:pointer;display:flex;align-items:center;gap:8px';
+        b.innerHTML = '<span>● Watching on your own</span><span style="text-decoration:underline">Resync</span>';
+        b.addEventListener('click', hcmExitDesync);
+        document.body.appendChild(b);
+    }
+
+    function hcmRemoveBadge() {
+        const el = document.getElementById(HCM_BADGE_ID);
+        if (el) el.remove();
+    }
+
+    function hcmReset() {
+        hcmDesynced = false;
+        hcmRemoveDialog();
+        hcmRemoveBadge();
+    }
+
     function reportLog(message, level = 'info') {
         chrome.runtime.sendMessage({ type: 'LOG', message, level }).catch(() => {});
     }
@@ -356,6 +505,10 @@
 
         reportLog(`Episode transition detected: "${newTitle}"`, 'info');
 
+        // EC-12: a new episode dissolves any solo/desync state — the guest rejoins
+        // the room for the fresh content rather than staying stuck on the old one.
+        if (hcmDesynced) hcmReset();
+
         // Do NOT pause here. We notify background.js first.
         // Background checks the setting; if enabled it creates a lobby
         // and sends back PAUSE_FOR_LOBBY so we only freeze if the feature is on.
@@ -538,6 +691,24 @@
             return true;
         }
 
+        // Host Control Mode: room mode/role changed.
+        if (message.type === 'CONTROL_MODE') {
+            const wasGated = hcmIsGuestGated();
+            hcmControlMode = message.controlMode || 'everyone';
+            hcmAmHost = !!message.amHost;
+            // Leaving host-only, or becoming host, clears any guest-side state.
+            if (wasGated && !hcmIsGuestGated()) hcmReset();
+            sendResponse({ ok: true });
+            return true;
+        }
+
+        // Host Control Mode: background blocked our local action — handle UX locally.
+        if (message.type === 'HOST_BLOCKED') {
+            hcmHandleBlocked(message.action, message.target || null);
+            sendResponse({ ok: true });
+            return true;
+        }
+
         // Background asks for an immediate state push (e.g. the first peer just
         // joined while we were solo) so the newcomer syncs without waiting.
         if (message.type === 'REQUEST_HEARTBEAT') {
@@ -550,6 +721,20 @@
             const { action, payload } = message;
             let actionCompleted = false;
 
+            // Host Control Mode: while watching on our own (desynced), don't apply
+            // host commands. Still ACK so the host's force-sync doesn't stall on us.
+            if (hcmDesynced) {
+                const soloIgnored = [EVENTS.PLAY, EVENTS.PAUSE, EVENTS.SEEK, EVENTS.FORCE_SYNC_PREPARE, EVENTS.FORCE_SYNC_EXECUTE];
+                if (soloIgnored.includes(action)) {
+                    if (action === EVENTS.FORCE_SYNC_PREPARE) {
+                        chrome.runtime.sendMessage({ type: 'FORCE_SYNC_ACK' }).catch(() => {});
+                    } else if (action !== EVENTS.FORCE_SYNC_EXECUTE) {
+                        chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId }).catch(() => {});
+                    }
+                    return;
+                }
+            }
+
             // Guard: Don't execute sync commands if peers are on different episodes.
             // Only active when autoSyncNextEpisode setting is enabled (default: on).
             // Only blocks when BOTH sides have parseable S01E01-style IDs that differ.
@@ -924,6 +1109,9 @@
 
     const handlePlay = () => reportEvent(EVENTS.PLAY);
     const handlePause = () => reportEvent(EVENTS.PAUSE);
+    // Host Control Mode: a 'waiting' (buffering) event opens a grace window so the
+    // pause it may trigger isn't misread as a deliberate guest action (EC-1).
+    const handleWaiting = () => { hcmBufferingUntil = Date.now() + HCM_BUFFERING_GRACE_MS; };
 
     // Seek filtering: ignore HLS/DASH buffering micro-seeks.
     // Only relay if delta >= MIN_SEEK_DELTA AND not already debouncing.
@@ -994,13 +1182,15 @@
                 video.removeEventListener('pause', existing.pause);
                 video.removeEventListener('seeked', existing.seeked);
                 video.removeEventListener('loadeddata', existing.loadeddata);
+                if (existing.waiting) video.removeEventListener('waiting', existing.waiting);
             }
-            video._koalaHandlers = { play: handlePlay, pause: handlePause, seeked: handleSeeked, loadeddata: handleLoadedData };
+            video._koalaHandlers = { play: handlePlay, pause: handlePause, seeked: handleSeeked, loadeddata: handleLoadedData, waiting: handleWaiting };
 
             video.addEventListener('play', handlePlay);
             video.addEventListener('pause', handlePause);
             video.addEventListener('seeked', handleSeeked);
             video.addEventListener('loadeddata', handleLoadedData);
+            video.addEventListener('waiting', handleWaiting);
             video.dataset.koalaAttached = 'true';
             lastVideoSrc = video.currentSrc || video.src || null;
 
@@ -1136,4 +1326,12 @@
         }
     });
 
+    // Host Control Mode: fetch current room mode/role on injection (we may have
+    // been injected after ROOM_DATA already arrived, missing the broadcast).
+    chrome.runtime.sendMessage({ type: 'GET_CONTROL_MODE' }, (res) => {
+        if (chrome.runtime.lastError || !res) return;
+        hcmControlMode = res.controlMode || 'everyone';
+        hcmAmHost = !!res.amHost;
+    });
+
 })();

From 9006570bd1d07fb09021705bb7ac348d8295cb82 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 04:14:55 +0200
Subject: [PATCH 043/151] feat(extension): host control toggle + role badge in
 popup (step 5)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Final wiring of host control mode — the user-facing UI:

- Active-room section gains a Host Control card: a Host/Guest role badge, a
  host-only toggle ("Only I can control playback") shown to the host, and a
  guest notice when the room is host-only.
- Toggle sends SET_CONTROL_MODE; UI refreshes from the server's CONTROL_MODE
  broadcast (with optimistic revert on failure). Card updates on GET_STATUS,
  CONTROL_MODE, and reconnect.
- i18n: 6 new keys (LABEL_HOST_CONTROL[_TOOLTIP], LABEL_HOST_ONLY_TOGGLE,
  NOTICE_HOST_CONTROLS, BADGE_HOST, BADGE_GUEST) translated across all 15
  popup locales.

Completes the feature end to end (server + background + content + popup).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/locales/de.json    |  6 ++++++
 extension/locales/en.json    |  6 ++++++
 extension/locales/es.json    |  6 ++++++
 extension/locales/fr.json    |  6 ++++++
 extension/locales/it.json    |  6 ++++++
 extension/locales/ja.json    |  6 ++++++
 extension/locales/ko.json    |  6 ++++++
 extension/locales/nl.json    |  6 ++++++
 extension/locales/pl.json    |  6 ++++++
 extension/locales/pt-BR.json |  6 ++++++
 extension/locales/pt.json    |  6 ++++++
 extension/locales/ru.json    |  6 ++++++
 extension/locales/tr.json    |  6 ++++++
 extension/locales/uk.json    |  6 ++++++
 extension/locales/zh.json    |  6 ++++++
 extension/popup.html         | 12 ++++++++++++
 extension/popup.js           | 38 ++++++++++++++++++++++++++++++++++++
 17 files changed, 140 insertions(+)

diff --git a/extension/locales/de.json b/extension/locales/de.json
index 10a8a9f..927f0b1 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Teile diesen Link mit Freunden, damit sie beitreten können",
   "LABEL_PEERS_IN_ROOM": "Teilnehmer im Raum",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Andere Benutzer, die derzeit mit diesem Raum verbunden sind",
+  "LABEL_HOST_CONTROL": "Host-Steuerung",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Festlegen, wer die Wiedergabe in diesem Raum steuern darf",
+  "LABEL_HOST_ONLY_TOGGLE": "Nur ich darf die Wiedergabe steuern",
+  "NOTICE_HOST_CONTROLS": "Der Host steuert die Wiedergabe für alle.",
+  "BADGE_HOST": "Host",
+  "BADGE_GUEST": "Gast",
   "NO_PEERS_CONNECTED": "Keine Teilnehmer verbunden",
   "BTN_LEAVE_ROOM": "Raum verlassen",
   "LABEL_SELECT_VIDEO": "Video auswählen",
diff --git a/extension/locales/en.json b/extension/locales/en.json
index 789abff..5a32d63 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Share this link with friends so they can join",
   "LABEL_PEERS_IN_ROOM": "Peers in Room",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Other users currently connected to this room",
+  "LABEL_HOST_CONTROL": "Host Control",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Restrict who can control playback in this room",
+  "LABEL_HOST_ONLY_TOGGLE": "Only I can control playback",
+  "NOTICE_HOST_CONTROLS": "The host controls playback for everyone.",
+  "BADGE_HOST": "Host",
+  "BADGE_GUEST": "Guest",
   "NO_PEERS_CONNECTED": "No peers connected",
   "BTN_LEAVE_ROOM": "Leave Room",
   "LABEL_SELECT_VIDEO": "Select Video",
diff --git a/extension/locales/es.json b/extension/locales/es.json
index 186678e..2dece79 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Comparte este enlace con amigos para que se unan",
   "LABEL_PEERS_IN_ROOM": "Participantes en la sala",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Otros usuarios conectados actualmente a esta sala",
+  "LABEL_HOST_CONTROL": "Control del anfitrión",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Restringir quién puede controlar la reproducción en esta sala",
+  "LABEL_HOST_ONLY_TOGGLE": "Solo yo puedo controlar la reproducción",
+  "NOTICE_HOST_CONTROLS": "El anfitrión controla la reproducción para todos.",
+  "BADGE_HOST": "Anfitrión",
+  "BADGE_GUEST": "Invitado",
   "NO_PEERS_CONNECTED": "Sin participantes conectados",
   "BTN_LEAVE_ROOM": "Salir de la sala",
   "LABEL_SELECT_VIDEO": "Seleccionar video",
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index 27db35b..f0cc0e4 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Partagez ce lien avec vos amis pour qu'ils vous rejoignent",
   "LABEL_PEERS_IN_ROOM": "Membres dans le salon",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Autres utilisateurs connectés à ce salon",
+  "LABEL_HOST_CONTROL": "Contrôle de l'hôte",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Définir qui peut contrôler la lecture dans ce salon",
+  "LABEL_HOST_ONLY_TOGGLE": "Moi seul peux contrôler la lecture",
+  "NOTICE_HOST_CONTROLS": "L'hôte contrôle la lecture pour tout le monde.",
+  "BADGE_HOST": "Hôte",
+  "BADGE_GUEST": "Invité",
   "NO_PEERS_CONNECTED": "Aucun membre connecté",
   "BTN_LEAVE_ROOM": "Quitter le salon",
   "LABEL_SELECT_VIDEO": "Choisir une vidéo",
diff --git a/extension/locales/it.json b/extension/locales/it.json
index 5217462..4cc5b53 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Condividi questo link per invitare i tuoi amici",
   "LABEL_PEERS_IN_ROOM": "Partecipanti",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Utenti connessi a questa stanza",
+  "LABEL_HOST_CONTROL": "Controllo host",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Limita chi può controllare la riproduzione in questa stanza",
+  "LABEL_HOST_ONLY_TOGGLE": "Solo io posso controllare la riproduzione",
+  "NOTICE_HOST_CONTROLS": "L'host controlla la riproduzione per tutti.",
+  "BADGE_HOST": "Host",
+  "BADGE_GUEST": "Ospite",
   "NO_PEERS_CONNECTED": "Nessun partecipante connesso",
   "BTN_LEAVE_ROOM": "Lascia Stanza",
   "LABEL_SELECT_VIDEO": "Seleziona Video",
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index afa8ed2..d7a8777 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "友達とこのリンクを共有して参加してもらいましょう",
   "LABEL_PEERS_IN_ROOM": "ルーム内のメンバー",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "現在このルームに接続している他のユーザー",
+  "LABEL_HOST_CONTROL": "ホスト操作",
+  "LABEL_HOST_CONTROL_TOOLTIP": "このルームで再生を操作できる人を制限します",
+  "LABEL_HOST_ONLY_TOGGLE": "再生を操作できるのは自分だけ",
+  "NOTICE_HOST_CONTROLS": "ホストが全員の再生を操作します。",
+  "BADGE_HOST": "ホスト",
+  "BADGE_GUEST": "ゲスト",
   "NO_PEERS_CONNECTED": "接続しているメンバーはいません",
   "BTN_LEAVE_ROOM": "ルームを退室",
   "LABEL_SELECT_VIDEO": "ビデオを選択",
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index fd20147..fc22f82 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "친구들이 참여할 수 있도록 이 링크를 공유하세요",
   "LABEL_PEERS_IN_ROOM": "방의 참여자",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "현재 이 방에 연결되어 있는 다른 사용자들",
+  "LABEL_HOST_CONTROL": "호스트 제어",
+  "LABEL_HOST_CONTROL_TOOLTIP": "이 방에서 재생을 제어할 수 있는 사람 제한",
+  "LABEL_HOST_ONLY_TOGGLE": "나만 재생을 제어할 수 있음",
+  "NOTICE_HOST_CONTROLS": "호스트가 모두의 재생을 제어합니다.",
+  "BADGE_HOST": "호스트",
+  "BADGE_GUEST": "게스트",
   "NO_PEERS_CONNECTED": "연결된 참여자가 없습니다",
   "BTN_LEAVE_ROOM": "방 나가기",
   "LABEL_SELECT_VIDEO": "비디오 선택",
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index cfef8a6..845be4d 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Deel deze link met vrienden zodat ze kunnen deelnemen",
   "LABEL_PEERS_IN_ROOM": "Deelnemers in kamer",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Andere gebruikers die momenteel zijn verbonden met deze kamer",
+  "LABEL_HOST_CONTROL": "Hostbeheer",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Bepaal wie de weergave in deze kamer mag bedienen",
+  "LABEL_HOST_ONLY_TOGGLE": "Alleen ik mag de weergave bedienen",
+  "NOTICE_HOST_CONTROLS": "De host bedient de weergave voor iedereen.",
+  "BADGE_HOST": "Host",
+  "BADGE_GUEST": "Gast",
   "NO_PEERS_CONNECTED": "Geen deelnemers verbonden",
   "BTN_LEAVE_ROOM": "Kamer verlaten",
   "LABEL_SELECT_VIDEO": "Selecteer video",
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index a7fe42c..31ee64a 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Udostępnij ten link znajomym, aby mogli dołączyć",
   "LABEL_PEERS_IN_ROOM": "Uczestnicy w pokoju",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Inni użytkownicy aktualnie połączeni z tym pokojem",
+  "LABEL_HOST_CONTROL": "Kontrola hosta",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Określ, kto może sterować odtwarzaniem w tym pokoju",
+  "LABEL_HOST_ONLY_TOGGLE": "Tylko ja mogę sterować odtwarzaniem",
+  "NOTICE_HOST_CONTROLS": "Host steruje odtwarzaniem dla wszystkich.",
+  "BADGE_HOST": "Host",
+  "BADGE_GUEST": "Gość",
   "NO_PEERS_CONNECTED": "Brak połączonych uczestników",
   "BTN_LEAVE_ROOM": "Opuść pokój",
   "LABEL_SELECT_VIDEO": "Wybierz wideo",
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index 9a9c608..d33caec 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Compartilhe este link com seus amigos para que eles entrem",
   "LABEL_PEERS_IN_ROOM": "Participantes",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Outros usuários conectados a esta sala",
+  "LABEL_HOST_CONTROL": "Controle do anfitrião",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Restringir quem pode controlar a reprodução nesta sala",
+  "LABEL_HOST_ONLY_TOGGLE": "Somente eu posso controlar a reprodução",
+  "NOTICE_HOST_CONTROLS": "O anfitrião controla a reprodução para todos.",
+  "BADGE_HOST": "Anfitrião",
+  "BADGE_GUEST": "Convidado",
   "NO_PEERS_CONNECTED": "Sem participantes conectados",
   "BTN_LEAVE_ROOM": "Sair da sala",
   "LABEL_SELECT_VIDEO": "Selecionar vídeo",
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index f5ab295..4e8833b 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Partilhe este link com os amigos para que possam entrar",
   "LABEL_PEERS_IN_ROOM": "Participantes na Sala",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Utilizadores atualmente ligados a esta sala",
+  "LABEL_HOST_CONTROL": "Controlo do anfitrião",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Restringir quem pode controlar a reprodução nesta sala",
+  "LABEL_HOST_ONLY_TOGGLE": "Só eu posso controlar a reprodução",
+  "NOTICE_HOST_CONTROLS": "O anfitrião controla a reprodução para todos.",
+  "BADGE_HOST": "Anfitrião",
+  "BADGE_GUEST": "Convidado",
   "NO_PEERS_CONNECTED": "Nenhum participante ligado",
   "BTN_LEAVE_ROOM": "Sair da Sala",
   "LABEL_SELECT_VIDEO": "Selecionar Vídeo",
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index f21e738..a749902 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Поделитесь этой ссылкой с друзьями, чтобы они вошли",
   "LABEL_PEERS_IN_ROOM": "Участники в комнате",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Другие пользователи, подключенные к этой комнате",
+  "LABEL_HOST_CONTROL": "Управление ведущим",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Ограничить, кто может управлять воспроизведением в этой комнате",
+  "LABEL_HOST_ONLY_TOGGLE": "Только я могу управлять воспроизведением",
+  "NOTICE_HOST_CONTROLS": "Ведущий управляет воспроизведением для всех.",
+  "BADGE_HOST": "Ведущий",
+  "BADGE_GUEST": "Гость",
   "NO_PEERS_CONNECTED": "Нет подключенных участников",
   "BTN_LEAVE_ROOM": "Выйти из комнаты",
   "LABEL_SELECT_VIDEO": "Выбрать видео",
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index 43dd76a..304ae7c 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Katılabilmeleri için bu bağlantıyı arkadaşlarınızla paylaşın",
   "LABEL_PEERS_IN_ROOM": "Odadaki Kişiler",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Şu anda bu odaya bağlı olan diğer kullanıcılar",
+  "LABEL_HOST_CONTROL": "Sunucu Kontrolü",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Bu odada oynatmayı kimin kontrol edebileceğini belirleyin",
+  "LABEL_HOST_ONLY_TOGGLE": "Oynatmayı yalnızca ben kontrol edebilirim",
+  "NOTICE_HOST_CONTROLS": "Oynatmayı herkes için sunucu kontrol eder.",
+  "BADGE_HOST": "Sunucu",
+  "BADGE_GUEST": "Misafir",
   "NO_PEERS_CONNECTED": "Bağlı kimse yok",
   "BTN_LEAVE_ROOM": "Odadan Ayrıl",
   "LABEL_SELECT_VIDEO": "Video Seç",
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
index 9ab3c28..6f96dbd 100644
--- a/extension/locales/uk.json
+++ b/extension/locales/uk.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Поділіться цим посиланням з друзями, щоб вони могли приєднатися",
   "LABEL_PEERS_IN_ROOM": "Учасники в кімнаті",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Інші користувачі зараз підключені до цієї кімнати",
+  "LABEL_HOST_CONTROL": "Керування ведучим",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Обмежити, хто може керувати відтворенням у цій кімнаті",
+  "LABEL_HOST_ONLY_TOGGLE": "Лише я можу керувати відтворенням",
+  "NOTICE_HOST_CONTROLS": "Ведучий керує відтворенням для всіх.",
+  "BADGE_HOST": "Ведучий",
+  "BADGE_GUEST": "Гість",
   "NO_PEERS_CONNECTED": "Немає підключених однорангових пристроїв",
   "BTN_LEAVE_ROOM": "Вийти з кімнати",
   "LABEL_SELECT_VIDEO": "Виберіть Відео",
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
index f414d05..e5bac19 100644
--- a/extension/locales/zh.json
+++ b/extension/locales/zh.json
@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "与朋友分享此链接，以便他们可以加入",
   "LABEL_PEERS_IN_ROOM": "房间里的同伴",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "当前连接到该房间的其他用户",
+  "LABEL_HOST_CONTROL": "主持人控制",
+  "LABEL_HOST_CONTROL_TOOLTIP": "限制谁可以在此房间中控制播放",
+  "LABEL_HOST_ONLY_TOGGLE": "仅我可以控制播放",
+  "NOTICE_HOST_CONTROLS": "由主持人为所有人控制播放。",
+  "BADGE_HOST": "主持人",
+  "BADGE_GUEST": "访客",
   "NO_PEERS_CONNECTED": "没有对等点连接",
   "BTN_LEAVE_ROOM": "离开房间",
   "LABEL_SELECT_VIDEO": "选择视频",
diff --git a/extension/popup.html b/extension/popup.html
index bb4fb4c..3d36a4c 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -450,6 +450,18 @@
                 </div>
             </div>
 
+            <div id="hostControlCard" class="info-card" style="margin-bottom: 20px; display:none;">
+                <div style="display:flex; justify-content:space-between; align-items:center;">
+                    <label style="margin:0;" title="Restrict who can control playback in this room" data-i18n="LABEL_HOST_CONTROL" data-i18n-title="LABEL_HOST_CONTROL_TOOLTIP">Host Control</label>
+                    <span id="hostRoleBadge" style="font-size:10px; font-weight:700; text-transform:uppercase; padding:2px 8px; border-radius:8px; background:var(--accent); color:#fff;"></span>
+                </div>
+                <label id="hostControlToggleRow" style="display:none; align-items:center; gap:8px; margin-top:10px; cursor:pointer; font-size:12px; color:var(--text-muted);">
+                    <input type="checkbox" id="hostControlToggle">
+                    <span data-i18n="LABEL_HOST_ONLY_TOGGLE">Only I can control playback</span>
+                </label>
+                <div id="hostControlGuestNote" style="display:none; margin-top:10px; font-size:12px; color:var(--text-muted);" data-i18n="NOTICE_HOST_CONTROLS">The host controls playback for everyone.</div>
+            </div>
+
             <div style="margin-bottom: 20px;">
                 <label title="Other users currently connected to this room" data-i18n="LABEL_PEERS_IN_ROOM" data-i18n-title="LABEL_PEERS_IN_ROOM_TOOLTIP">Peers in Room</label>
                 <div id="peerList" class="info-card">
diff --git a/extension/popup.js b/extension/popup.js
index 3d94f60..c773c9e 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -41,6 +41,11 @@ const elements = {
     retryBtn: document.getElementById('retryBtn'),
     sectionJoin: document.getElementById('section-join'),
     sectionActive: document.getElementById('section-active'),
+    hostControlCard: document.getElementById('hostControlCard'),
+    hostRoleBadge: document.getElementById('hostRoleBadge'),
+    hostControlToggleRow: document.getElementById('hostControlToggleRow'),
+    hostControlToggle: document.getElementById('hostControlToggle'),
+    hostControlGuestNote: document.getElementById('hostControlGuestNote'),
     activeRoomId: document.getElementById('activeRoomId'),
     activeServer: document.getElementById('activeServer'),
     peerListSync: document.getElementById('peerListSync'),
@@ -244,6 +249,7 @@ async function init() {
             updatePingDisplay(res.ping);
             updatePeerList(res.peers);
             lastKnownPeers = res.peers || [];
+            updateHostControlUI(res.controlMode, res.amHost, res.status === 'connected');
             if (res.lastActionState) updateLastActionUI(res.lastActionState, res.peers);
 
             // If user has a room configured but background is not connected (disconnected or idle),
@@ -303,6 +309,34 @@ function toggleUIState(inRoom) {
     if (syncInactive) syncInactive.style.display = inRoom ? 'none' : 'block';
 }
 
+// --- Host Control Mode UI ---
+function updateHostControlUI(controlMode, amHost, inRoom) {
+    const card = elements.hostControlCard;
+    if (!card) return;
+    if (!inRoom) { card.style.display = 'none'; return; }
+    card.style.display = 'block';
+    const hostOnly = controlMode === 'host-only';
+    if (elements.hostRoleBadge) {
+        elements.hostRoleBadge.textContent = amHost ? (getMessage('BADGE_HOST') || 'Host') : (getMessage('BADGE_GUEST') || 'Guest');
+        elements.hostRoleBadge.style.background = amHost ? 'var(--accent)' : 'var(--text-muted)';
+    }
+    if (elements.hostControlToggleRow) elements.hostControlToggleRow.style.display = amHost ? 'flex' : 'none';
+    if (elements.hostControlToggle) elements.hostControlToggle.checked = hostOnly;
+    if (elements.hostControlGuestNote) elements.hostControlGuestNote.style.display = (!amHost && hostOnly) ? 'block' : 'none';
+}
+
+if (elements.hostControlToggle) {
+    elements.hostControlToggle.addEventListener('change', () => {
+        const mode = elements.hostControlToggle.checked ? 'host-only' : 'everyone';
+        chrome.runtime.sendMessage({ type: 'SET_CONTROL_MODE', controlMode: mode }, (res) => {
+            // Server broadcasts CONTROL_MODE back to refresh the UI; revert on failure.
+            if (chrome.runtime.lastError || !res || res.status !== 'ok') {
+                elements.hostControlToggle.checked = (mode === 'everyone');
+            }
+        });
+    });
+}
+
 function updateUI(roomId, password, useCustomServer = false, serverUrl = '') {
     const inRoom = !!roomId;
     toggleUIState(inRoom);
@@ -1656,6 +1690,9 @@ chrome.runtime.onMessage.addListener((msg) => {
     } else if (msg.type === 'PEER_UPDATE') {
         updatePeerList(msg.peers);
         if (msg.peers) detectPeerChanges(msg.peers);
+    } else if (msg.type === 'CONTROL_MODE') {
+        const inRoom = elements.sectionActive && elements.sectionActive.style.display === 'block';
+        updateHostControlUI(msg.controlMode, msg.amHost, inRoom);
     } else if (msg.type === 'CONNECTION_STATUS') {
         if (msg.status === 'connected' || msg.status === 'disconnected') {
             if (joinBtnTimeout) { clearTimeout(joinBtnTimeout); joinBtnTimeout = null; }
@@ -1673,6 +1710,7 @@ chrome.runtime.onMessage.addListener((msg) => {
                 if (res.peers) updatePeerList(res.peers);
                 if (res.lastActionState) updateLastActionUI(res.lastActionState, res.peers);
                 updatePingDisplay(res.ping);
+                updateHostControlUI(res.controlMode, res.amHost, true);
             });
         }
         if (msg.status === 'disconnected') {

From b1ea280f0b0f286005f77b935a8858eaab5db629 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 04:15:25 +0200
Subject: [PATCH 044/151] docs: mark host control mode implementation status

All five layers implemented; automated checks green. Records what still needs
real-device testing (EC matrix) and what was deferred by decision.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/host-control-mode-EDGECASES.md | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/docs/host-control-mode-EDGECASES.md b/docs/host-control-mode-EDGECASES.md
index b1007a4..08df3f2 100644
--- a/docs/host-control-mode-EDGECASES.md
+++ b/docs/host-control-mode-EDGECASES.md
@@ -9,6 +9,24 @@
 
 ---
 
+## 0. Implementation status
+
+All five layers are implemented & pushed (server + background + content + popup + i18n).
+Automated checks green: ESLint, WS integration tests (incl. host-only gate, toggle
+reject, host-leave fallback), content video-finder, locale consistency (15 langs),
+full release verification.
+
+**Still needs real-device testing** — the EC test matrix in §7 (YouTube/Netflix/
+Twitch/Disney+/Jellyfin): involuntary-pause classification (EC-1/EC-5/EC-8), snap-back
+reliability and fight-loops (EC-4), and the desync/resync flow across players. The
+intent classifier (EC-9) and snap-back cooldown are first-pass heuristics tuned by
+reading the code, not yet by watching them behave on each site.
+
+Deferred by decision (see §8): host grace period on disconnect (EC-10), live-DVR
+detection beyond `duration === Infinity` (EC-15).
+
+---
+
 ## 1. What this branch is for
 
 Origin: a GitHub feature request. When watching with larger groups, anyone can pause

From af9cf34f0b15672be8cc74c8583a54d864a19264 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 09:54:45 +0200
Subject: [PATCH 045/151] fix(extension): pre-test self-audit fixes for host
 control mode

- popup: lock remote-control buttons (Play/Pause/SYNC) for guests in host-only
  mode so clicks don't silently get gated and leave the button stuck; backstop
  guards in the handlers and the 2.5s safety reset respects the lock.
- content: rebuild the desync dialog + resync badge with the DOM API inside a
  Shadow DOM. innerHTML inline style="" attributes are stripped by strict
  style-src CSP (Netflix/YouTube/Disney+); CSSOM .style is CSP-safe and the
  shadow root isolates from page CSS.
- content: detect live-DVR in hcmIsLive() via a sliding seekable window
  (seekable.start(0) > 1), not just duration === Infinity (EC-15).

Records remaining audit items (snap-back thrash, join race, dialog i18n) in the
edge-case log for the device-testing pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/host-control-mode-EDGECASES.md | 28 +++++++++-
 extension/content.js                | 79 +++++++++++++++++++----------
 extension/popup.js                  | 31 +++++++++--
 3 files changed, 106 insertions(+), 32 deletions(-)

diff --git a/docs/host-control-mode-EDGECASES.md b/docs/host-control-mode-EDGECASES.md
index 08df3f2..5a2f1c5 100644
--- a/docs/host-control-mode-EDGECASES.md
+++ b/docs/host-control-mode-EDGECASES.md
@@ -22,8 +22,32 @@ reliability and fight-loops (EC-4), and the desync/resync flow across players. T
 intent classifier (EC-9) and snap-back cooldown are first-pass heuristics tuned by
 reading the code, not yet by watching them behave on each site.
 
-Deferred by decision (see §8): host grace period on disconnect (EC-10), live-DVR
-detection beyond `duration === Infinity` (EC-15).
+Deferred by decision (see §8): host grace period on disconnect (EC-10).
+
+### Pre-test self-audit (fixed)
+- **Popup remote buttons froze for guests** — in host-only a guest's Play/Pause/SYNC
+  click was gated server-side but the button stuck on "Playing"/disabled with no
+  feedback. Now the remote controls are locked (disabled + tooltip) for guests, with
+  backstop guards in the handlers. (popup.js)
+- **Desync dialog could break under strict CSP** — it used `innerHTML` with inline
+  `style=""` attributes, which Netflix/YouTube/Disney+ strip via `style-src`. Rebuilt
+  with the DOM API (CSSOM `.style` is CSP-safe) inside a **Shadow DOM** so page CSS
+  can't restyle/hide it. (content.js)
+- **Live-DVR not detected (EC-15)** — `duration === Infinity` misses Twitch/YouTube
+  live-DVR (finite, sliding duration). Added a `seekable.start(0) > 1` sliding-window
+  heuristic in `hcmIsLive()`. (content.js)
+
+### Pre-test self-audit (open, watch during device testing)
+- **EC-4/EC-1 snap-back thrash:** for *involuntary* events we still actively seek+play,
+  which can fight a buffering player for the duration of the stall. Likely fix: on
+  involuntary, don't re-play — let catch-up re-sync — or use an exponential cooldown.
+  Decide after watching it on Netflix/YouTube.
+- **Control-mode race at join:** a `HOST_BLOCKED` arriving before content.js learns the
+  mode is ignored (`hcmIsGuestGated()` false). Fix: trust `HOST_BLOCKED` as
+  authoritative (background only sends it to gated guests) instead of re-checking local
+  mode. Small change, deferred pending test.
+- **Dialog/badge text is English-only** — content.js has no i18n loader; the in-page
+  strings aren't localized yet. Follow-up.
 
 ---
 
diff --git a/extension/content.js b/extension/content.js
index 2cffa76..6514556 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -134,7 +134,7 @@
     function hcmClassifyIntent() {
         const video = findVideo();
         if (!video) return 'involuntary';
-        if (video.duration === Infinity) return 'live';        // EC-15: degrade, don't gate
+        if (hcmIsLive(video)) return 'live';                   // EC-15: degrade, don't gate
         if (video.readyState < 3) return 'involuntary';        // buffering / not enough data
         if (video.seeking) return 'involuntary';
         if (Date.now() < hcmBufferingUntil) return 'involuntary';
@@ -143,6 +143,18 @@
         return 'deliberate';
     }
 
+    // Live detection (EC-15 + DVR). Pure live reports duration Infinity/NaN. Live-DVR
+    // (Twitch/YouTube-live with rewind) reports a *finite, sliding* duration — its
+    // seekable window doesn't start at 0, which we use as the DVR signal.
+    function hcmIsLive(video) {
+        if (!Number.isFinite(video.duration)) return true;
+        try {
+            const s = video.seekable;
+            if (s && s.length > 0 && s.start(0) > 1) return true; // sliding DVR window
+        } catch (_e) { /* seekable may throw if empty */ }
+        return false;
+    }
+
     // Snap the local player back to the host's current position/state.
     function hcmSnapBackToHost(target) {
         if (hcmDesynced) return; // user opted out — never yank them back automatically
@@ -178,37 +190,49 @@
         hcmShowDesyncDialog(action, target);
     }
 
-    // --- Minimal in-page UI (dialog + persistent desync badge) ---
-    const HCM_UI_ID = 'koalasync-hcm-dialog';
-    const HCM_BADGE_ID = 'koalasync-hcm-badge';
+    // --- In-page UI (dialog + persistent desync badge) ---
+    // Built with the DOM API (CSSOM .style is CSP-safe; inline style="" in innerHTML
+    // is stripped by strict style-src on Netflix/YouTube/Disney+). Hosted in a
+    // Shadow DOM so the page's CSS can't restyle or hide our controls.
+    let hcmDialogHost = null;  // shadow host element for the dialog
+    let hcmBadgeHost = null;   // shadow host element for the persistent badge
+
+    function hcmEl(tag, css, text) {
+        const el = document.createElement(tag);
+        if (css) el.style.cssText = css;        // CSSOM assignment — not gated by CSP
+        if (text != null) el.textContent = text;
+        return el;
+    }
 
     function hcmRemoveDialog() {
-        const el = document.getElementById(HCM_UI_ID);
-        if (el) el.remove();
+        if (hcmDialogHost) { hcmDialogHost.remove(); hcmDialogHost = null; }
     }
 
     function hcmShowDesyncDialog(action, target) {
         if (!document.body) { hcmSnapBackToHost(target); return; }
         hcmRemoveDialog();
-        const wrap = document.createElement('div');
-        wrap.id = HCM_UI_ID;
+        const host = hcmEl('div', 'all:initial');
+        const root = host.attachShadow({ mode: 'open' });
+
+        const wrap = hcmEl('div', 'position:fixed;z-index:2147483647;left:50%;bottom:32px;transform:translateX(-50%);background:#1f2937;color:#f9fafb;font:14px/1.4 system-ui,sans-serif;padding:16px 18px;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.45);max-width:360px;border:1px solid #374151');
         wrap.setAttribute('role', 'dialog');
-        wrap.style.cssText = 'position:fixed;z-index:2147483647;left:50%;bottom:32px;transform:translateX(-50%);background:#1f2937;color:#f9fafb;font:14px/1.4 system-ui,sans-serif;padding:16px 18px;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.45);max-width:360px;border:1px solid #374151';
         const verb = action === EVENTS.SEEK ? 'jumped' : 'paused';
-        wrap.innerHTML =
-            '<div style="font-weight:600;margin-bottom:6px">KoalaSync · Host controls this room</div>' +
-            `<div style="margin-bottom:12px;color:#d1d5db">You ${verb} your player. Only the host can control the group. Keep watching together, or watch on your own?</div>` +
-            '<div style="display:flex;gap:8px;justify-content:flex-end">' +
-            `<button id="${HCM_UI_ID}-solo" style="background:#374151;color:#f9fafb;border:0;padding:8px 12px;border-radius:8px;cursor:pointer">Watch on my own</button>` +
-            `<button id="${HCM_UI_ID}-stay" style="background:#10b981;color:#062a20;border:0;padding:8px 12px;border-radius:8px;cursor:pointer;font-weight:600">Stay in sync</button>` +
-            '</div>';
-        document.body.appendChild(wrap);
+        const title = hcmEl('div', 'font-weight:600;margin-bottom:6px', 'KoalaSync · Host controls this room');
+        const body = hcmEl('div', 'margin-bottom:12px;color:#d1d5db', `You ${verb} your player. Only the host can control the group. Keep watching together, or watch on your own?`);
+        const btnRow = hcmEl('div', 'display:flex;gap:8px;justify-content:flex-end');
+        const soloBtn = hcmEl('button', 'background:#374151;color:#f9fafb;border:0;padding:8px 12px;border-radius:8px;cursor:pointer', 'Watch on my own');
+        const stayBtn = hcmEl('button', 'background:#10b981;color:#062a20;border:0;padding:8px 12px;border-radius:8px;cursor:pointer;font-weight:600', 'Stay in sync');
+        btnRow.append(soloBtn, stayBtn);
+        wrap.append(title, body, btnRow);
+        root.appendChild(wrap);
+        document.body.appendChild(host);
+        hcmDialogHost = host;
 
         let settled = false;
         const stay = () => { if (settled) return; settled = true; hcmRemoveDialog(); hcmSnapBackToHost(target); };
         const solo = () => { if (settled) return; settled = true; hcmRemoveDialog(); hcmEnterDesync(); };
-        wrap.querySelector(`#${HCM_UI_ID}-stay`).addEventListener('click', stay);
-        wrap.querySelector(`#${HCM_UI_ID}-solo`).addEventListener('click', solo);
+        stayBtn.addEventListener('click', stay);
+        soloBtn.addEventListener('click', solo);
         // EC-18: if the user ignores the prompt, default to staying in sync.
         setTimeout(() => { if (!settled) stay(); }, 8000);
     }
@@ -231,18 +255,19 @@
     }
 
     function hcmShowBadge() {
-        if (document.getElementById(HCM_BADGE_ID) || !document.body) return;
-        const b = document.createElement('div');
-        b.id = HCM_BADGE_ID;
-        b.style.cssText = 'position:fixed;z-index:2147483646;right:16px;bottom:16px;background:#b45309;color:#fff;font:13px/1.3 system-ui,sans-serif;padding:8px 12px;border-radius:10px;box-shadow:0 6px 20px rgba(0,0,0,.4);cursor:pointer;display:flex;align-items:center;gap:8px';
-        b.innerHTML = '<span>● Watching on your own</span><span style="text-decoration:underline">Resync</span>';
+        if (hcmBadgeHost || !document.body) return;
+        const host = hcmEl('div', 'all:initial');
+        const root = host.attachShadow({ mode: 'open' });
+        const b = hcmEl('div', 'position:fixed;z-index:2147483646;right:16px;bottom:16px;background:#b45309;color:#fff;font:13px/1.3 system-ui,sans-serif;padding:8px 12px;border-radius:10px;box-shadow:0 6px 20px rgba(0,0,0,.4);cursor:pointer;display:flex;align-items:center;gap:8px');
+        b.append(hcmEl('span', null, '● Watching on your own'), hcmEl('span', 'text-decoration:underline', 'Resync'));
         b.addEventListener('click', hcmExitDesync);
-        document.body.appendChild(b);
+        root.appendChild(b);
+        document.body.appendChild(host);
+        hcmBadgeHost = host;
     }
 
     function hcmRemoveBadge() {
-        const el = document.getElementById(HCM_BADGE_ID);
-        if (el) el.remove();
+        if (hcmBadgeHost) { hcmBadgeHost.remove(); hcmBadgeHost = null; }
     }
 
     function hcmReset() {
diff --git a/extension/popup.js b/extension/popup.js
index c773c9e..acf24e1 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -310,10 +310,18 @@ function toggleUIState(inRoom) {
 }
 
 // --- Host Control Mode UI ---
+// True when we're a guest in a host-only room → remote-control buttons are locked.
+let hcmGuestLocked = false;
+
 function updateHostControlUI(controlMode, amHost, inRoom) {
     const card = elements.hostControlCard;
     if (!card) return;
-    if (!inRoom) { card.style.display = 'none'; return; }
+    if (!inRoom) {
+        card.style.display = 'none';
+        hcmGuestLocked = false;
+        setRemoteControlsLocked(false);
+        return;
+    }
     card.style.display = 'block';
     const hostOnly = controlMode === 'host-only';
     if (elements.hostRoleBadge) {
@@ -323,6 +331,21 @@ function updateHostControlUI(controlMode, amHost, inRoom) {
     if (elements.hostControlToggleRow) elements.hostControlToggleRow.style.display = amHost ? 'flex' : 'none';
     if (elements.hostControlToggle) elements.hostControlToggle.checked = hostOnly;
     if (elements.hostControlGuestNote) elements.hostControlGuestNote.style.display = (!amHost && hostOnly) ? 'block' : 'none';
+
+    // A guest in host-only mode can't drive the room → lock the remote controls so
+    // clicks don't silently get gated (and leave the button stuck).
+    hcmGuestLocked = (!amHost && hostOnly);
+    setRemoteControlsLocked(hcmGuestLocked);
+}
+
+function setRemoteControlsLocked(locked) {
+    [elements.playBtn, elements.pauseBtn, elements.forceSyncBtn].forEach(btn => {
+        if (!btn) return;
+        btn.disabled = locked;
+        btn.style.opacity = locked ? '0.5' : '';
+        btn.style.cursor = locked ? 'not-allowed' : '';
+        btn.title = locked ? (getMessage('NOTICE_HOST_CONTROLS') || 'The host controls playback for everyone.') : '';
+    });
 }
 
 if (elements.hostControlToggle) {
@@ -1488,6 +1511,7 @@ elements.forceSyncBtn.addEventListener('click', async () => {
 });
 
 elements.playBtn.addEventListener('click', () => {
+    if (hcmGuestLocked) return; // guest in host-only room — backstop
     if (!elements.targetTab.value) {
         showToast(getMessage('ERR_SELECT_VIDEO'), 'warning');
         return;
@@ -1506,7 +1530,7 @@ elements.playBtn.addEventListener('click', () => {
     });
     // Safety reset: restore button after 2.5s in case no peers respond
     setTimeout(() => {
-        if (elements.playBtn.disabled) {
+        if (elements.playBtn.disabled && !hcmGuestLocked) {
             elements.playBtn.textContent = getMessage('BTN_PLAY');
             elements.playBtn.disabled = false;
         }
@@ -1514,6 +1538,7 @@ elements.playBtn.addEventListener('click', () => {
 });
 
 elements.pauseBtn.addEventListener('click', () => {
+    if (hcmGuestLocked) return; // guest in host-only room — backstop
     if (!elements.targetTab.value) {
         showToast(getMessage('ERR_SELECT_VIDEO'), 'warning');
         return;
@@ -1532,7 +1557,7 @@ elements.pauseBtn.addEventListener('click', () => {
     });
     // Safety reset: restore button after 2.5s in case no peers respond
     setTimeout(() => {
-        if (elements.pauseBtn.disabled) {
+        if (elements.pauseBtn.disabled && !hcmGuestLocked) {
             elements.pauseBtn.textContent = getMessage('BTN_PAUSE');
             elements.pauseBtn.disabled = false;
         }

From 69f8f4cfd7f7a30fd4b9308e86f422c594981875 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 10:01:04 +0200
Subject: [PATCH 046/151] fix(extension): trust HOST_BLOCKED as authoritative
 (join race, EC-5)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

hcmHandleBlocked no longer re-checks local control mode before acting. Background
only sends HOST_BLOCKED to a gated guest, so the message itself is authoritative —
adopt host-only/guest role from it. Fixes the join race where a HOST_BLOCKED
arriving before the CONTROL_MODE broadcast was silently ignored.

Also corrects the EC-4 note: "let catch-up re-sync" is invalid (sync is
event-driven, no continuous catch-up); the right fix is a buffer-aware deferred
snap-back.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/host-control-mode-EDGECASES.md | 17 ++++++++++-------
 extension/content.js                |  7 ++++++-
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/docs/host-control-mode-EDGECASES.md b/docs/host-control-mode-EDGECASES.md
index 5a2f1c5..501bd42 100644
--- a/docs/host-control-mode-EDGECASES.md
+++ b/docs/host-control-mode-EDGECASES.md
@@ -39,13 +39,16 @@ Deferred by decision (see §8): host grace period on disconnect (EC-10).
 
 ### Pre-test self-audit (open, watch during device testing)
 - **EC-4/EC-1 snap-back thrash:** for *involuntary* events we still actively seek+play,
-  which can fight a buffering player for the duration of the stall. Likely fix: on
-  involuntary, don't re-play — let catch-up re-sync — or use an exponential cooldown.
-  Decide after watching it on Netflix/YouTube.
-- **Control-mode race at join:** a `HOST_BLOCKED` arriving before content.js learns the
-  mode is ignored (`hcmIsGuestGated()` false). Fix: trust `HOST_BLOCKED` as
-  authoritative (background only sends it to gated guests) instead of re-checking local
-  mode. Small change, deferred pending test.
+  which can fight a buffering player for the duration of the stall. NOTE: "just let
+  catch-up re-sync" is NOT a valid fix — sync is event-driven, there is no continuous
+  catch-up loop, so skipping the snap-back risks leaving the guest stuck paused/behind
+  until the host next acts. Correct fix is a **buffer-aware deferred snap-back**: when
+  involuntary + buffering, wait for readyState>=3 (à la pollSeekReady) then seek+play
+  once — avoids thrash AND guarantees re-sync. Build after device testing reveals which
+  players fire pause() vs only 'waiting'.
+- ~~**Control-mode race at join:**~~ FIXED — `hcmHandleBlocked` now treats `HOST_BLOCKED`
+  as authoritative (adopts host-only/guest role) instead of re-checking local mode,
+  since background only sends it to gated guests.
 - **Dialog/badge text is English-only** — content.js has no i18n loader; the in-page
   strings aren't localized yet. Follow-up.
 
diff --git a/extension/content.js b/extension/content.js
index 6514556..387a907 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -175,7 +175,12 @@
 
     // Entry point: background told us our local action was blocked in host-only.
     function hcmHandleBlocked(action, target) {
-        if (!hcmIsGuestGated()) return;
+        // HOST_BLOCKED is only ever sent to a gated guest (background verifies
+        // host-only + !host before sending), so it's authoritative. Adopt the
+        // role/mode from it in case our CONTROL_MODE broadcast hasn't landed yet
+        // (join race, EC-5) — otherwise we'd miss the dialog/snap-back.
+        hcmControlMode = 'host-only';
+        hcmAmHost = false;
         if (Date.now() < hcmSnapBackCooldownUntil) return; // EC-4 loop guard
         if (hcmDesynced) return; // already solo, nothing to do
 

From 58af258fd35446a42e6809e36c1ed7dc3508a0f6 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 13:07:17 +0200
Subject: [PATCH 047/151] fix(host-control-mode): harden gates, close UX races,
 debounce toggles, surface desync state
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Bis auf peerId-Auth (akzeptiert) alle Audit-Findings behoben:
- Snap-back spielt nicht mehr blind ab, wenn Host-Status unbekannt
- Teardown-Pfade broadcasten jetzt CONTROL_MODE → kein verwaistes Badge/Dialog
- Dialog-Timer bei Ersetzung sauber gecleart
- Server re-synchronisiert Sender bei nicht-Host-Reject
- Popup-Toggle revertiert bei Server-Ablehnung
- Desync-Zweig sendet keine Phantom-ACKs mehr an Host
- Toggle-Debouncing serverseitig (500ms pro Raum)
- Button-Text auf Unlock zurückgesetzt
- Live-Erkennung defensiver, Resync-Retry bei fehlendem Target, Badge-Retry

Neu: Host sieht 'Solo'-Badge für desyncte Gäste via PEER_STATUS-Heartbeat
(16 Sprachen, neuer i18n-Key BADGE_DESYNCED/TOOLTIP_PEER_DESYNCED)

Tests: H-5-Reject-Unicast, M-4-Debounce, Desync-Heartbeat-Relay
---
 extension/background.js      |  34 +++++++++++-
 extension/content.js         | 103 ++++++++++++++++++++++++++++++-----
 extension/locales/de.json    |   2 +
 extension/locales/en.json    |   2 +
 extension/locales/es.json    |   2 +
 extension/locales/fr.json    |   2 +
 extension/locales/it.json    |   2 +
 extension/locales/ja.json    |   2 +
 extension/locales/ko.json    |   2 +
 extension/locales/nl.json    |   2 +
 extension/locales/pl.json    |   2 +
 extension/locales/pt-BR.json |   2 +
 extension/locales/pt.json    |   2 +
 extension/locales/ru.json    |   2 +
 extension/locales/tr.json    |   2 +
 extension/locales/uk.json    |   2 +
 extension/locales/zh.json    |   2 +
 extension/popup.js           |  19 +++++++
 scripts/test-server-ws.mjs   |  52 +++++++++++++++++-
 server/index.js              |  27 ++++++++-
 20 files changed, 245 insertions(+), 20 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index c5a04ee..7197e1a 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -74,6 +74,10 @@ const lastSeqBySender = {};               // senderId → last received seq (sta
 // --- Host Control Mode ---
 let controlMode = CONTROL_MODES.EVERYONE;  // 'everyone' | 'host-only'
 let hostPeerId = null;                     // peerId of the room host (creator / fallback)
+// Local peer's desync state (content.js reports it via HCM_DESYNC_STATE). Relayed
+// in heartbeats so the host's popup UI can show "Solo" instead of silently
+// appearing un-ACK'd.
+let hcmDesynced = false;
 function amHost() { return !!peerId && hostPeerId === peerId; }
 // Room-moving actions a guest may not initiate while in host-only mode.
 const HOST_ONLY_GATED_ACTIONS = [
@@ -281,6 +285,7 @@ function createPeerData(raw) {
         currentTime:   raw.currentTime   != null ? raw.currentTime : null,
         volume:        raw.volume        != null ? raw.volume       : null,
         muted:         raw.muted         != null ? raw.muted        : null,
+        desynced:      raw.desynced === true,   // HCM: peer is watching on their own
         lastHeartbeat: Date.now()
     };
 }
@@ -465,6 +470,10 @@ async function leaveRoomAfterIdleGrace(reason) {
     currentRoom = null;
     controlMode = CONTROL_MODES.EVERYONE;
     hostPeerId = null;
+    hcmDesynced = false;
+    // Notify content.js/popup BEFORE currentTabId is cleared so they can reset
+    // any stale guest-side HCM state (dialog/badge/desync) — H-2.
+    broadcastControlMode();
     currentTabId = null;
     currentTabTitle = null;
     roomIdleSince = null;
@@ -915,7 +924,11 @@ function handleServerEvent(event, data) {
     // Host Control Mode (receiver-side backstop): in host-only mode, ignore
     // room-moving events from any non-host peer. The server already drops these,
     // so this covers old/buggy/modified clients that slipped through.
+    // Defensive: require a known hostPeerId — if the server ever sends host-only
+    // without a host (state inconsistency), gate-everyone would lock the host
+    // out of their own room (L-6).
     if (controlMode === CONTROL_MODES.HOST_ONLY &&
+        hostPeerId &&
         HOST_ONLY_GATED_ACTIONS.includes(event) &&
         data.senderId && data.senderId !== hostPeerId) {
         addLog(`Ignored ${event} from non-host ${data.senderId} (host-only)`, 'warn');
@@ -1199,6 +1212,7 @@ function handleServerEvent(event, data) {
                             peer.mediaTitle = data.mediaTitle !== undefined ? data.mediaTitle : peer.mediaTitle;
                             peer.volume = data.volume !== undefined ? data.volume : peer.volume;
                             peer.muted = data.muted !== undefined ? data.muted : peer.muted;
+                            peer.desynced = data.desynced === true;
 
                             const timeSinceReactive = peer.lastReactiveUpdate ? (Date.now() - peer.lastReactiveUpdate) : Infinity;
                             const ignoreStatus = timeSinceReactive < 300;
@@ -1553,6 +1567,10 @@ function leaveOldRoomIfSwitching(newRoomId) {
         currentRoom = null;
         controlMode = CONTROL_MODES.EVERYONE;
         hostPeerId = null;
+        hcmDesynced = false;
+        // Notify content.js/popup so they drop any guest-side HCM state from the
+        // previous room (badge/dialog/desync) — H-2/H-3.
+        broadcastControlMode();
         if (storageInitialized) chrome.storage.session.set({ currentRoom: null });
         chrome.runtime.sendMessage({ type: 'PEER_UPDATE', peers: [] }).catch(() => {});
 
@@ -1689,6 +1707,12 @@ async function handleAsyncMessage(message, sender, sendResponse) {
     } else if (message.type === 'REQUEST_HOST_SYNC') {
         // content.js resync: hand back the host's extrapolated current position.
         sendResponse({ target: getHostSyncTarget() });
+    } else if (message.type === 'HCM_DESYNC_STATE') {
+        // content.js tells us whether the local user chose to watch on their own.
+        // Mirrored into heartbeats so the host's UI can show "Solo" instead of
+        // silently waiting for ACKs that will never come.
+        hcmDesynced = !!message.desynced;
+        sendResponse({ status: 'ok' });
     } else if (message.type === 'LEAVE_ROOM') {
         connectIntent = false;
         reconnectFailed = false;
@@ -1699,6 +1723,10 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         currentRoom = null;
         controlMode = CONTROL_MODES.EVERYONE;
         hostPeerId = null;
+        hcmDesynced = false;
+        // Notify content.js/popup BEFORE currentTabId is cleared so they drop any
+        // stale guest-side HCM state (dialog/badge/desync) — H-2/H-3.
+        broadcastControlMode();
         currentTabId = null;
         currentTabTitle = null;
         roomIdleSince = null;
@@ -1822,7 +1850,9 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             // Host Control Mode (sender-side): a guest in host-only mode must not
             // drive the room. Don't broadcast; hand the action back to content.js so
             // it can snap the local player back (and, in step 4, offer desync).
-            if (controlMode === CONTROL_MODES.HOST_ONLY && !amHost() &&
+            // Defensive: require a known hostPeerId (L-6) — otherwise the actual
+            // host would gate themselves if state ever becomes inconsistent.
+            if (controlMode === CONTROL_MODES.HOST_ONLY && hostPeerId && !amHost() &&
                 HOST_ONLY_GATED_ACTIONS.includes(message.action)) {
                 addLog(`Host-only: blocked local ${message.action} (you are a guest)`, 'warn');
                 if (sender.tab && sender.tab.id) {
@@ -1974,7 +2004,7 @@ async function handleAsyncMessage(message, sender, sendResponse) {
 
         markRoomUseful();
         getSettings().then(settings => {
-            const statusPayload = { ...message.payload, peerId, username: settings.username, tabTitle: currentTabTitle };
+            const statusPayload = { ...message.payload, peerId, username: settings.username, tabTitle: currentTabTitle, desynced: hcmDesynced };
             const otherCount = currentRoom && Array.isArray(currentRoom.peers) ? currentRoom.peers.filter(p => (typeof p === 'object' ? p.peerId : p) !== peerId).length : 0;
             if (otherCount > 0) emit(EVENTS.PEER_STATUS, statusPayload);
 
diff --git a/extension/content.js b/extension/content.js
index 387a907..4f1b385 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -109,10 +109,12 @@
     // really wants to — let them go solo (desync) with a resync escape hatch.
     let hcmControlMode = 'everyone';   // mirror of room control mode
     let hcmAmHost = false;             // are we the host?
+    let hcmHostPeerId = null;          // last known host peerId (room/host identity)
     let hcmDesynced = false;           // user chose to go solo
     let hcmSnapBackCooldownUntil = 0;  // suppress re-trigger right after a snap-back
     let hcmLastUserGestureAt = 0;      // for deliberate-vs-involuntary classification
     let hcmBufferingUntil = 0;         // set on 'waiting' — buffering grace window
+    let hcmDialogTimer = null;         // 8s auto-stay timer — cleared on dialog replace (H-4)
     const HCM_USER_GESTURE_MS = 1000;
     const HCM_BUFFERING_GRACE_MS = 1500;
     const HCM_SNAP_BACK_COOLDOWN_MS = 1000;
@@ -147,6 +149,10 @@
     // (Twitch/YouTube-live with rewind) reports a *finite, sliding* duration — its
     // seekable window doesn't start at 0, which we use as the DVR signal.
     function hcmIsLive(video) {
+        // Don't trust duration before metadata has loaded (readyState >= 1) —
+        // otherwise pre-loaded videos report NaN and get misclassified as live,
+        // which suppresses the desync dialog (L-2).
+        if (video.readyState < 1) return false;
         if (!Number.isFinite(video.duration)) return true;
         try {
             const s = video.seekable;
@@ -164,10 +170,12 @@
         if (target && Number.isFinite(target.targetTime)) {
             tryMediaAction(EVENTS.SEEK, { targetTime: target.targetTime });
         }
-        // Adopt the host's play/pause state (default: resume playing).
+        // Adopt the host's play/pause state — but ONLY if we actually know it.
+        // Defaulting to PLAY when the state is unknown would auto-resume a paused
+        // video against the host's real state (H-1).
         if (target && target.playbackState === 'paused') {
             tryMediaAction(EVENTS.PAUSE);
-        } else {
+        } else if (target && target.playbackState === 'playing') {
             tryMediaAction(EVENTS.PLAY);
         }
         reportLog('Host-only: snapped back to host position', 'info');
@@ -181,12 +189,16 @@
         // (join race, EC-5) — otherwise we'd miss the dialog/snap-back.
         hcmControlMode = 'host-only';
         hcmAmHost = false;
-        if (Date.now() < hcmSnapBackCooldownUntil) return; // EC-4 loop guard
         if (hcmDesynced) return; // already solo, nothing to do
 
         const intent = hcmClassifyIntent();
         if (intent === 'live') return;          // EC-15: leave the guest alone on live
         if (intent === 'involuntary') {
+            // EC-4 loop guard: only the silent auto snap-back is suppressed by the
+            // cooldown — the deliberate dialog path below must still go through,
+            // otherwise a second deliberate pause inside the cooldown window leaves
+            // the user stuck paused with no UI (M-3).
+            if (Date.now() < hcmSnapBackCooldownUntil) return;
             // Buffering/ads/throttle — silently re-sync, no dialog spam.
             hcmSnapBackToHost(target);
             return;
@@ -201,6 +213,7 @@
     // Shadow DOM so the page's CSS can't restyle or hide our controls.
     let hcmDialogHost = null;  // shadow host element for the dialog
     let hcmBadgeHost = null;   // shadow host element for the persistent badge
+    let hcmBadgePending = false;  // retry flag for early-injection badge creation (L-4)
 
     function hcmEl(tag, css, text) {
         const el = document.createElement(tag);
@@ -210,6 +223,9 @@
     }
 
     function hcmRemoveDialog() {
+        // Cancel any pending auto-stay timer so a replaced dialog's stale closure
+        // can't later remove its successor / snap to an outdated target (H-4).
+        if (hcmDialogTimer) { clearTimeout(hcmDialogTimer); hcmDialogTimer = null; }
         if (hcmDialogHost) { hcmDialogHost.remove(); hcmDialogHost = null; }
     }
 
@@ -234,33 +250,77 @@
         hcmDialogHost = host;
 
         let settled = false;
-        const stay = () => { if (settled) return; settled = true; hcmRemoveDialog(); hcmSnapBackToHost(target); };
+        // Re-query the host's current position on click instead of using the
+        // potentially stale target captured at HOST_BLOCKED time (M-1).
+        const stay = () => {
+            if (settled) return; settled = true; hcmRemoveDialog();
+            chrome.runtime.sendMessage({ type: 'REQUEST_HOST_SYNC' }, (res) => {
+                if (chrome.runtime.lastError) return;
+                if (res && res.target) hcmSnapBackToHost(res.target);
+            });
+        };
         const solo = () => { if (settled) return; settled = true; hcmRemoveDialog(); hcmEnterDesync(); };
         stayBtn.addEventListener('click', stay);
         soloBtn.addEventListener('click', solo);
         // EC-18: if the user ignores the prompt, default to staying in sync.
-        setTimeout(() => { if (!settled) stay(); }, 8000);
+        hcmDialogTimer = setTimeout(() => { if (!settled) stay(); }, 8000);
     }
 
     function hcmEnterDesync() {
         hcmDesynced = true;
         reportLog('Host-only: you chose to watch on your own (desynced)', 'warn');
+        // Notify background so it can relay our desynced state to the host via
+        // heartbeats — the host's UI then knows we're not following commands
+        // instead of appearing silently un-ACK'd.
+        chrome.runtime.sendMessage({ type: 'HCM_DESYNC_STATE', desynced: true }).catch(() => {});
         hcmShowBadge();
     }
 
     function hcmExitDesync() {
+        const wasDesynced = hcmDesynced;
         hcmDesynced = false;
         hcmRemoveBadge();
+        if (wasDesynced) {
+            chrome.runtime.sendMessage({ type: 'HCM_DESYNC_STATE', desynced: false }).catch(() => {});
+        }
         // Resync: ask background for the host's current position and snap to it.
-        chrome.runtime.sendMessage({ type: 'REQUEST_HOST_SYNC' }, (res) => {
-            if (chrome.runtime.lastError) return;
-            if (res && res.target) hcmSnapBackToHost(res.target);
-        });
+        // Retry briefly if the host's state isn't known yet (e.g. they just paused
+        // and no heartbeat has propagated) — otherwise the user's "Resync" tap is
+        // a silent no-op and they think they're synced when they aren't (L-3).
+        let attempts = 0;
+        const tryResync = () => {
+            chrome.runtime.sendMessage({ type: 'REQUEST_HOST_SYNC' }, (res) => {
+                if (chrome.runtime.lastError || !res || !res.target) {
+                    if (++attempts < 5) setTimeout(tryResync, 250);
+                    else reportLog('Host-only: resync requested but host state unavailable', 'warn');
+                    return;
+                }
+                hcmSnapBackToHost(res.target);
+            });
+        };
+        tryResync();
         reportLog('Host-only: resynced with the host', 'info');
     }
 
     function hcmShowBadge() {
-        if (hcmBadgeHost || !document.body) return;
+        if (hcmBadgeHost) return;
+        if (!document.body) {
+            // Body not ready yet (very early injection). Defer until DOMReady,
+            // otherwise the desynced user silently never sees the badge (L-4).
+            if (!hcmBadgePending) {
+                hcmBadgePending = true;
+                const retry = () => {
+                    hcmBadgePending = false;
+                    if (hcmDesynced && !hcmBadgeHost) hcmShowBadge();
+                };
+                if (document.readyState === 'loading') {
+                    document.addEventListener('DOMContentLoaded', retry, { once: true });
+                } else {
+                    setTimeout(retry, 50);
+                }
+            }
+            return;
+        }
         const host = hcmEl('div', 'all:initial');
         const root = host.attachShadow({ mode: 'open' });
         const b = hcmEl('div', 'position:fixed;z-index:2147483646;right:16px;bottom:16px;background:#b45309;color:#fff;font:13px/1.3 system-ui,sans-serif;padding:8px 12px;border-radius:10px;box-shadow:0 6px 20px rgba(0,0,0,.4);cursor:pointer;display:flex;align-items:center;gap:8px');
@@ -276,9 +336,16 @@
     }
 
     function hcmReset() {
+        const wasDesynced = hcmDesynced;
         hcmDesynced = false;
         hcmRemoveDialog();
         hcmRemoveBadge();
+        // If we were desynced, notify background so it stops reporting us as
+        // desynced in heartbeats (otherwise the host's UI keeps showing the
+        // stale Solo badge until the next state change).
+        if (wasDesynced) {
+            chrome.runtime.sendMessage({ type: 'HCM_DESYNC_STATE', desynced: false }).catch(() => {});
+        }
     }
 
     function reportLog(message, level = 'info') {
@@ -724,10 +791,15 @@
         // Host Control Mode: room mode/role changed.
         if (message.type === 'CONTROL_MODE') {
             const wasGated = hcmIsGuestGated();
+            const prevHostPeerId = hcmHostPeerId;
             hcmControlMode = message.controlMode || 'everyone';
             hcmAmHost = !!message.amHost;
-            // Leaving host-only, or becoming host, clears any guest-side state.
-            if (wasGated && !hcmIsGuestGated()) hcmReset();
+            hcmHostPeerId = message.hostPeerId || null;
+            // Reset guest-side state when leaving the gated state, OR when the
+            // host identity changes (room switch, host-leave fallback, missed
+            // teardown broadcast) — clears stale desync so a rejoin starts clean (H-3).
+            const hostChanged = prevHostPeerId !== null && hcmHostPeerId !== prevHostPeerId;
+            if ((wasGated && !hcmIsGuestGated()) || hostChanged) hcmReset();
             sendResponse({ ok: true });
             return true;
         }
@@ -752,14 +824,15 @@
             let actionCompleted = false;
 
             // Host Control Mode: while watching on our own (desynced), don't apply
-            // host commands. Still ACK so the host's force-sync doesn't stall on us.
+            // host commands. Only ACK FORCE_SYNC_PREPARE — that's the one the host's
+            // force-sync flow actually waits on. Skipping CMD_ACKs for PLAY/PAUSE/SEEK
+            // is intentional so the host's UI honestly reflects that we didn't apply
+            // the command (M-2); sending them would make the host think we're synced.
             if (hcmDesynced) {
                 const soloIgnored = [EVENTS.PLAY, EVENTS.PAUSE, EVENTS.SEEK, EVENTS.FORCE_SYNC_PREPARE, EVENTS.FORCE_SYNC_EXECUTE];
                 if (soloIgnored.includes(action)) {
                     if (action === EVENTS.FORCE_SYNC_PREPARE) {
                         chrome.runtime.sendMessage({ type: 'FORCE_SYNC_ACK' }).catch(() => {});
-                    } else if (action !== EVENTS.FORCE_SYNC_EXECUTE) {
-                        chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId }).catch(() => {});
                     }
                     return;
                 }
diff --git a/extension/locales/de.json b/extension/locales/de.json
index 927f0b1..cd21b0e 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "Der Host steuert die Wiedergabe für alle.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Gast",
+  "BADGE_DESYNCED": "Solo",
+  "TOOLTIP_PEER_DESYNCED": "Schaut alleine — ignoriert die Befehle des Hosts",
   "NO_PEERS_CONNECTED": "Keine Teilnehmer verbunden",
   "BTN_LEAVE_ROOM": "Raum verlassen",
   "LABEL_SELECT_VIDEO": "Video auswählen",
diff --git a/extension/locales/en.json b/extension/locales/en.json
index 5a32d63..358e6c8 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "The host controls playback for everyone.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Guest",
+  "BADGE_DESYNCED": "Solo",
+  "TOOLTIP_PEER_DESYNCED": "Watching on their own — host's commands are ignored",
   "NO_PEERS_CONNECTED": "No peers connected",
   "BTN_LEAVE_ROOM": "Leave Room",
   "LABEL_SELECT_VIDEO": "Select Video",
diff --git a/extension/locales/es.json b/extension/locales/es.json
index 2dece79..af95d76 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "El anfitrión controla la reproducción para todos.",
   "BADGE_HOST": "Anfitrión",
   "BADGE_GUEST": "Invitado",
+  "BADGE_DESYNCED": "Solo",
+  "TOOLTIP_PEER_DESYNCED": "Viendo por su cuenta — ignora los comandos del anfitrión",
   "NO_PEERS_CONNECTED": "Sin participantes conectados",
   "BTN_LEAVE_ROOM": "Salir de la sala",
   "LABEL_SELECT_VIDEO": "Seleccionar video",
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index f0cc0e4..944912c 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "L'hôte contrôle la lecture pour tout le monde.",
   "BADGE_HOST": "Hôte",
   "BADGE_GUEST": "Invité",
+  "BADGE_DESYNCED": "Solo",
+  "TOOLTIP_PEER_DESYNCED": "Regarde de son côté — ignore les commandes de l'hôte",
   "NO_PEERS_CONNECTED": "Aucun membre connecté",
   "BTN_LEAVE_ROOM": "Quitter le salon",
   "LABEL_SELECT_VIDEO": "Choisir une vidéo",
diff --git a/extension/locales/it.json b/extension/locales/it.json
index 4cc5b53..c911ed4 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "L'host controlla la riproduzione per tutti.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Ospite",
+  "BADGE_DESYNCED": "Solo",
+  "TOOLTIP_PEER_DESYNCED": "Guarda per conto proprio — ignora i comandi dell'host",
   "NO_PEERS_CONNECTED": "Nessun partecipante connesso",
   "BTN_LEAVE_ROOM": "Lascia Stanza",
   "LABEL_SELECT_VIDEO": "Seleziona Video",
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index d7a8777..9b5bcda 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "ホストが全員の再生を操作します。",
   "BADGE_HOST": "ホスト",
   "BADGE_GUEST": "ゲスト",
+  "BADGE_DESYNCED": "ソロ",
+  "TOOLTIP_PEER_DESYNCED": "単独で視聴中 — ホストのコマンドを無視しています",
   "NO_PEERS_CONNECTED": "接続しているメンバーはいません",
   "BTN_LEAVE_ROOM": "ルームを退室",
   "LABEL_SELECT_VIDEO": "ビデオを選択",
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index fc22f82..595db59 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "호스트가 모두의 재생을 제어합니다.",
   "BADGE_HOST": "호스트",
   "BADGE_GUEST": "게스트",
+  "BADGE_DESYNCED": "단독",
+  "TOOLTIP_PEER_DESYNCED": "혼자 시청 중 — 호스트 명령을 무시합니다",
   "NO_PEERS_CONNECTED": "연결된 참여자가 없습니다",
   "BTN_LEAVE_ROOM": "방 나가기",
   "LABEL_SELECT_VIDEO": "비디오 선택",
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index 845be4d..4c808ac 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "De host bedient de weergave voor iedereen.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Gast",
+  "BADGE_DESYNCED": "Solo",
+  "TOOLTIP_PEER_DESYNCED": "Zelfstandig aan het kijken — negeert de commando's van de host",
   "NO_PEERS_CONNECTED": "Geen deelnemers verbonden",
   "BTN_LEAVE_ROOM": "Kamer verlaten",
   "LABEL_SELECT_VIDEO": "Selecteer video",
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index 31ee64a..b5f3480 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "Host steruje odtwarzaniem dla wszystkich.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Gość",
+  "BADGE_DESYNCED": "Solo",
+  "TOOLTIP_PEER_DESYNCED": "Ogląda samodzielnie — ignoruje polecenia hosta",
   "NO_PEERS_CONNECTED": "Brak połączonych uczestników",
   "BTN_LEAVE_ROOM": "Opuść pokój",
   "LABEL_SELECT_VIDEO": "Wybierz wideo",
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index d33caec..a8b2e31 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "O anfitrião controla a reprodução para todos.",
   "BADGE_HOST": "Anfitrião",
   "BADGE_GUEST": "Convidado",
+  "BADGE_DESYNCED": "Solo",
+  "TOOLTIP_PEER_DESYNCED": "Assistindo por conta própria — ignora os comandos do anfitrião",
   "NO_PEERS_CONNECTED": "Sem participantes conectados",
   "BTN_LEAVE_ROOM": "Sair da sala",
   "LABEL_SELECT_VIDEO": "Selecionar vídeo",
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index 4e8833b..693b0ef 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "O anfitrião controla a reprodução para todos.",
   "BADGE_HOST": "Anfitrião",
   "BADGE_GUEST": "Convidado",
+  "BADGE_DESYNCED": "Solo",
+  "TOOLTIP_PEER_DESYNCED": "A ver por conta própria — ignora os comandos do anfitrião",
   "NO_PEERS_CONNECTED": "Nenhum participante ligado",
   "BTN_LEAVE_ROOM": "Sair da Sala",
   "LABEL_SELECT_VIDEO": "Selecionar Vídeo",
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index a749902..c17d3fb 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "Ведущий управляет воспроизведением для всех.",
   "BADGE_HOST": "Ведущий",
   "BADGE_GUEST": "Гость",
+  "BADGE_DESYNCED": "Соло",
+  "TOOLTIP_PEER_DESYNCED": "Смотрит отдельно — игнорирует команды ведущего",
   "NO_PEERS_CONNECTED": "Нет подключенных участников",
   "BTN_LEAVE_ROOM": "Выйти из комнаты",
   "LABEL_SELECT_VIDEO": "Выбрать видео",
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index 304ae7c..f075493 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "Oynatmayı herkes için sunucu kontrol eder.",
   "BADGE_HOST": "Sunucu",
   "BADGE_GUEST": "Misafir",
+  "BADGE_DESYNCED": "Solo",
+  "TOOLTIP_PEER_DESYNCED": "Tek başına izliyor — sunucu komutlarını yok sayar",
   "NO_PEERS_CONNECTED": "Bağlı kimse yok",
   "BTN_LEAVE_ROOM": "Odadan Ayrıl",
   "LABEL_SELECT_VIDEO": "Video Seç",
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
index 6f96dbd..40a5bc2 100644
--- a/extension/locales/uk.json
+++ b/extension/locales/uk.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "Ведучий керує відтворенням для всіх.",
   "BADGE_HOST": "Ведучий",
   "BADGE_GUEST": "Гість",
+  "BADGE_DESYNCED": "Соло",
+  "TOOLTIP_PEER_DESYNCED": "Дивиться окремо — ігнорує команди ведучого",
   "NO_PEERS_CONNECTED": "Немає підключених однорангових пристроїв",
   "BTN_LEAVE_ROOM": "Вийти з кімнати",
   "LABEL_SELECT_VIDEO": "Виберіть Відео",
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
index e5bac19..5ba0b55 100644
--- a/extension/locales/zh.json
+++ b/extension/locales/zh.json
@@ -50,6 +50,8 @@
   "NOTICE_HOST_CONTROLS": "由主持人为所有人控制播放。",
   "BADGE_HOST": "主持人",
   "BADGE_GUEST": "访客",
+  "BADGE_DESYNCED": "单独",
+  "TOOLTIP_PEER_DESYNCED": "单独观看中 — 忽略主持人的命令",
   "NO_PEERS_CONNECTED": "没有对等点连接",
   "BTN_LEAVE_ROOM": "离开房间",
   "LABEL_SELECT_VIDEO": "选择视频",
diff --git a/extension/popup.js b/extension/popup.js
index acf24e1..70c4f99 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -346,6 +346,15 @@ function setRemoteControlsLocked(locked) {
         btn.style.cursor = locked ? 'not-allowed' : '';
         btn.title = locked ? (getMessage('NOTICE_HOST_CONTROLS') || 'The host controls playback for everyone.') : '';
     });
+    // When unlocking, also restore the default labels. The action handlers leave
+    // the text in a transitional state ("Playing..." / "Pausing...") and the 2.5s
+    // safety reset skips the refresh while we were guest-locked, so without this
+    // the button can be re-enabled with stale text after the host disables
+    // host-only (L-1).
+    if (!locked) {
+        if (elements.playBtn) elements.playBtn.textContent = getMessage('BTN_PLAY') || 'Play';
+        if (elements.pauseBtn) elements.pauseBtn.textContent = getMessage('BTN_PAUSE') || 'Pause';
+    }
 }
 
 if (elements.hostControlToggle) {
@@ -650,6 +659,16 @@ function updatePeerList(peers) {
                 header.appendChild(you);
             }
 
+            // Host Control Mode: show "Solo" badge for peers watching on their own.
+            if (typeof p === 'object' && p.desynced) {
+                const solo = document.createElement('span');
+                solo.style.cssText = 'font-size:10px; color:#fff; background:#b45309; padding:2px 6px; border-radius:6px; font-weight:600;';
+                const soloText = getMessage('BADGE_DESYNCED') || 'Solo';
+                solo.textContent = soloText;
+                solo.title = getMessage('TOOLTIP_PEER_DESYNCED') || soloText;
+                header.appendChild(solo);
+            }
+
             peerItem.appendChild(header);
 
             // Media Info
diff --git a/scripts/test-server-ws.mjs b/scripts/test-server-ws.mjs
index 2aea846..1e87365 100644
--- a/scripts/test-server-ws.mjs
+++ b/scripts/test-server-ws.mjs
@@ -3,6 +3,7 @@ import http from 'node:http';
 import { createRequire } from 'node:module';
 import { fileURLToPath } from 'node:url';
 import path from 'node:path';
+import { connectionCounts, clearRateLimitMaps } from '../server/rate-limiter.js';
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 const require = createRequire(path.join(__dirname, '..', 'server', 'package.json'));
@@ -23,6 +24,9 @@ function a(ws) { if (ws._m.length) { const r=ws._m.shift(); return r.startsWith(
 async function w(ws, evt, ms=3000) { const st=Date.now(); while(Date.now()-st<ms) { for(let i=0;i<ws._m.length;i++){const r=ws._m[i];ws._m.splice(i,1);if(r.startsWith('42')){try{const[e]=JSON.parse(r.substring(2));if(e===evt)return e}catch{/* skip */}}} await new Promise(r=>setTimeout(r,50));} throw Error(`wait:${evt}`); }
 async function j(ws, rid, pid, pw=null) { s(ws,'join_room',{roomId:rid,peerId:pid,password:pw,protocolVersion:'1.0.0'}); assert.equal((await a(ws))[0],'room_data'); }
 function close() { clients.forEach(w=>{try{w.close()}catch{/* ignore */}}); clients.length=0; }
+// Test suite opens >10 connections/min — clear the IP connection counter so the
+// connection rate limiter doesn't mask test failures (test-only, never at runtime).
+function resetConnectionRate() { connectionCounts.clear(); clearRateLimitMaps(); }
 
 try {
     process.env.ADMIN_METRICS_TOKEN = 'ws-integration-test-32chars-minimum!';
@@ -57,6 +61,7 @@ try {
     s(p1,'leave_room',{}); const [ev,d]=await a(p2); assert.equal(ev,'peer_status');assert.equal(d.status,'left');
 
     close();
+    resetConnectionRate();
 
     // --- Host Control Mode ---
     const hrid = 'host-'+Date.now();
@@ -77,10 +82,31 @@ try {
     s(h1,'pause',{currentTime:7}); await w(h2,'pause');
     h1._m.length = h2._m.length = 0;
 
-    // Guest cannot change the control mode -> no broadcast
+    // desynced flag is relayed through PEER_STATUS heartbeats so the host's UI
+    // can show "Solo" for guests watching on their own.
+    s(h2,'peer_status',{status:'heartbeat',desynced:true,currentTime:42,playbackState:'playing'});
+    let hbData = null; const hbStart = Date.now();
+    while (Date.now()-hbStart < 600 && !hbData) {
+        for (let i=0;i<h1._m.length;i++){ const r=h1._m[i]; if(r.startsWith('42')){ const [e,dd]=JSON.parse(r.substring(2)); if(e==='peer_status'){ h1._m.splice(i,1); hbData=dd; break; } } }
+        await new Promise(r=>setTimeout(r,30));
+    }
+    assert.ok(hbData && hbData.desynced === true, 'desynced=true relayed in heartbeat');
+    h1._m.length = h2._m.length = 0;
+
+    // Guest cannot change the control mode -> host must NOT receive a broadcast.
+    // The rejected sender gets a unicast of the *actual* state so any optimistic
+    // UI reverts (H-5); assert both halves.
     s(h2,'set_control_mode',{controlMode:'everyone'});
     let guestSetBlocked = false; try { await w(h1,'control_mode',600); } catch { guestSetBlocked = true; }
     assert.ok(guestSetBlocked, 'non-host cannot set control mode');
+    let rejectSync = null; const rsStart = Date.now();
+    while (Date.now()-rsStart < 600 && !rejectSync) {
+        for (let i=0;i<h2._m.length;i++){ const r=h2._m[i]; if(r.startsWith('42')){ const [e,dd]=JSON.parse(r.substring(2)); if(e==='control_mode'){ h2._m.splice(i,1); rejectSync=dd; break; } } }
+        await new Promise(r=>setTimeout(r,30));
+    }
+    assert.ok(rejectSync && rejectSync.controlMode==='host-only' && rejectSync.hostPeerId==='host1',
+        'rejected sender is re-synced to actual state');
+    h1._m.length = h2._m.length = 0;
 
     // Host leaves -> room falls back to 'everyone' and reassigns host to the guest
     s(h1,'leave_room',{});
@@ -92,6 +118,30 @@ try {
     assert.ok(fb && fb.controlMode==='everyone' && fb.hostPeerId==='guest1', 'host leave -> fallback everyone + new host');
     close();
 
+    // --- M-4: rapid control-mode toggles are debounced per-room ---
+    const drid = 'debounce-'+Date.now();
+    const db1 = await c(), db2 = await c();
+    await j(db1, drid, 'dhost'); await j(db2, drid, 'dguest'); db1._m.length = db2._m.length = 0;
+
+    // First toggle (everyone → host-only) goes through.
+    s(db1,'set_control_mode',{controlMode:'host-only'});
+    await w(db1,'control_mode'); await w(db2,'control_mode');
+    db1._m.length = db2._m.length = 0;
+
+    // Immediate second toggle (host-only → everyone) should be debounced:
+    // broadcast goes to neither peer, but sender gets a re-sync unicast.
+    s(db1,'set_control_mode',{controlMode:'everyone'});
+    let dGuestGotIt = false; try { await w(db2,'control_mode',600); } catch { dGuestGotIt = true; }
+    assert.ok(dGuestGotIt, 'rapid control-mode toggle is debounced (no broadcast)');
+    let dSenderResync = null; const dsStart = Date.now();
+    while (Date.now()-dsStart < 600 && !dSenderResync) {
+        for (let i=0;i<db1._m.length;i++){ const r=db1._m[i]; if(r.startsWith('42')){ const [e,dd]=JSON.parse(r.substring(2)); if(e==='control_mode'){ db1._m.splice(i,1); dSenderResync=dd; break; } } }
+        await new Promise(r=>setTimeout(r,30));
+    }
+    assert.ok(dSenderResync && dSenderResync.controlMode==='host-only',
+        'debounced toggle re-syncs sender to actual state');
+    close();
+
     // --- Password room ---
     const prid = 'pw-'+Date.now();
     const pw1 = await c(); await j(pw1, prid, 'admin', 's3cret');
diff --git a/server/index.js b/server/index.js
index c7552d7..548c74c 100644
--- a/server/index.js
+++ b/server/index.js
@@ -161,6 +161,11 @@ const HOST_ONLY_GATED_EVENTS = new Set([
     EVENTS.EPISODE_LOBBY_CANCEL
 ]);
 
+// M-4: minimum interval between CONTROL_MODE changes per room. Stops a rapidly
+// toggling host from thrashing every guest's UI (locked/unlocked/locked...) and
+// from generating one broadcast per toggle across all peers.
+const CONTROL_MODE_MIN_INTERVAL_MS = 500;
+
 function log(type, message, details = '') {
     const debugLogging = process.env.DEBUG_LOGGING === '1';
     const isVerbose = type === 'CONN' || type === 'ROOM' || type === 'DEDUPE' || type === 'CORS' || type === 'ACKDROP';
@@ -361,7 +366,8 @@ io.on('connection', (socket) => {
                             lastActivity: Date.now(),
                             // Host Control Mode: creator (first joiner) is the host.
                             hostPeerId: peerId,
-                            controlMode: CONTROL_MODES.EVERYONE
+                            controlMode: CONTROL_MODES.EVERYONE,
+                            lastControlModeChangeAt: 0 // M-4: per-room debounce for control-mode toggles
                         };
                         rooms.set(roomId, room);
                         createdByMe = true;
@@ -516,6 +522,7 @@ io.on('connection', (socket) => {
                         currentTime:   data.currentTime   !== undefined ? (clampNum(data.currentTime, 0, 86400) ?? existing.currentTime)   : existing.currentTime,
                         volume:        data.volume        !== undefined ? (clampNum(data.volume, 0, 1) ?? existing.volume)                 : existing.volume,
                         muted:         data.muted         !== undefined ? (validBool(data.muted) ?? existing.muted)                       : existing.muted,
+                        desynced:      data.desynced      !== undefined ? (validBool(data.desynced) === true) : (existing.desynced || false),
                         lastSeen: Date.now()
                     });
 
@@ -531,6 +538,7 @@ io.on('connection', (socket) => {
                         mediaTitle:      clamp(data.mediaTitle, 100),
                         volume:          clampNum(data.volume, 0, 1),
                         muted:           validBool(data.muted),
+                        desynced:        validBool(data.desynced),
                         peerId:          mapping.peerId,
                         status:          typeof data.status === 'string' ? data.status.substring(0, 16) : undefined,
                         expectedTitle:   clamp(data.expectedTitle, 100),
@@ -612,12 +620,27 @@ io.on('connection', (socket) => {
         // Only the host may change the control mode.
         if (mapping.peerId !== room.hostPeerId) {
             log('AUTH', `Non-host ${mapping.peerId} tried to set control mode in ${mapping.roomId.substring(0, 3)}***`);
+            // Re-sync the sender to the actual room state so any optimistic UI
+            // (e.g. popup toggle) reverts — covers stale-local-amHost races (H-5).
+            socket.emit(EVENTS.CONTROL_MODE, { controlMode: room.controlMode, hostPeerId: room.hostPeerId });
             return;
         }
         if (room.controlMode === mode) return; // no-op, ignore (UI debounce backstop)
 
+        // M-4: per-room debounce — reject toggles faster than CONTROL_MODE_MIN_INTERVAL_MS.
+        // The host still gets the final state via the next legit change; this just
+        // kills the spam vector.
+        const now = Date.now();
+        if (now - room.lastControlModeChangeAt < CONTROL_MODE_MIN_INTERVAL_MS) {
+            log('ROOM', `Control mode toggle debounced in ${mapping.roomId.substring(0, 3)}***`);
+            // Re-sync the sender so any optimistic UI matches the actual (unchanged) state.
+            socket.emit(EVENTS.CONTROL_MODE, { controlMode: room.controlMode, hostPeerId: room.hostPeerId });
+            return;
+        }
+
         room.controlMode = mode;
-        room.lastActivity = Date.now();
+        room.lastControlModeChangeAt = now;
+        room.lastActivity = now;
         io.to(mapping.roomId).emit(EVENTS.CONTROL_MODE, { controlMode: mode, hostPeerId: room.hostPeerId });
         log('ROOM', `Control mode set to '${mode}' by host in room ${mapping.roomId.substring(0, 3)}***`);
     });

From 1eca3fa5bbba8590315a4a25c9098f6e9a641aad Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 13:18:09 +0200
Subject: [PATCH 048/151] fix(host-control-mode): guard against stale tab
 events, persist desync across SW restart

- CONTENT_EVENT now rejected from non-selected tabs (popup exempted via sender.tab check)
- HCM_DESYNC_STATE same guard
- hcmDesynced persisted in session storage: restored on SW restart, cleared on teardown
---
 extension/background.js | 28 +++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 7197e1a..e2123e5 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -140,7 +140,8 @@ function ensureState() {
                 'logs', 'history', 'currentRoom', 'lastActionState', 
                 'eventQueue', 'isForceSyncInitiator', 'forceSyncAcks', 
                 'forceSyncDeadline', 'reconnectFailed', 'reconnectStartTime', 'reconnectAttempts', 'currentTabId', 'currentTabTitle',
-                'episodeLobby', 'localSeq', 'lastSeqBySender', 'expectedAcksCount', 'roomIdleSince', 'lastContentHeartbeatAt'
+                'episodeLobby', 'localSeq', 'lastSeqBySender', 'expectedAcksCount', 'roomIdleSince', 'lastContentHeartbeatAt',
+                'hcmDesynced'
             ], (data) => {
                 clearTimeout(storageTimeout);
                 if (data.expectedAcksCount !== undefined) expectedAcksCount = data.expectedAcksCount;
@@ -156,6 +157,7 @@ function ensureState() {
                     controlMode = currentRoom.controlMode || CONTROL_MODES.EVERYONE;
                     hostPeerId = currentRoom.hostPeerId || null;
                 }
+                if (data.hcmDesynced !== undefined) hcmDesynced = data.hcmDesynced;
                 if (data.lastActionState) lastActionState = data.lastActionState;
                 
                 if (data.eventQueue) eventQueue = [...eventQueue, ...data.eventQueue].slice(0, 50);
@@ -485,7 +487,8 @@ async function leaveRoomAfterIdleGrace(reason) {
         currentTabTitle: null,
         roomIdleSince: null,
         lastContentHeartbeatAt: null,
-        episodeLobby: null
+        episodeLobby: null,
+        hcmDesynced: false
     }).catch(() => {});
     await chrome.storage.local.set({ roomId: '', password: '' }).catch(() => {});
     addLog(reason, 'info');
@@ -1571,7 +1574,7 @@ function leaveOldRoomIfSwitching(newRoomId) {
         // Notify content.js/popup so they drop any guest-side HCM state from the
         // previous room (badge/dialog/desync) — H-2/H-3.
         broadcastControlMode();
-        if (storageInitialized) chrome.storage.session.set({ currentRoom: null });
+        if (storageInitialized) chrome.storage.session.set({ currentRoom: null, hcmDesynced: false });
         chrome.runtime.sendMessage({ type: 'PEER_UPDATE', peers: [] }).catch(() => {});
 
         // Reset force sync states
@@ -1709,9 +1712,16 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         sendResponse({ target: getHostSyncTarget() });
     } else if (message.type === 'HCM_DESYNC_STATE') {
         // content.js tells us whether the local user chose to watch on their own.
+        // Only accept from the currently selected tab.
+        if (sender.tab && currentTabId && currentTabId !== sender.tab.id) {
+            sendResponse({ status: 'ignored_unselected_tab' });
+            return;
+        }
         // Mirrored into heartbeats so the host's UI can show "Solo" instead of
-        // silently waiting for ACKs that will never come.
+        // silently waiting for ACKs that will never come. Persisted so the
+        // heartbeat survives SW restarts (idle timeout, crash).
         hcmDesynced = !!message.desynced;
+        if (storageInitialized) chrome.storage.session.set({ hcmDesynced });
         sendResponse({ status: 'ok' });
     } else if (message.type === 'LEAVE_ROOM') {
         connectIntent = false;
@@ -1752,7 +1762,8 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             forceSyncAcks: [],
             forceSyncDeadline: null,
             episodeLobby: null,
-            expectedAcksCount: 0
+            expectedAcksCount: 0,
+            hcmDesynced: false
         });
         chrome.storage.local.set({ roomId: '', password: '' }).catch(() => {});
         addLog('Left Room', 'info');
@@ -1846,6 +1857,13 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             }
         });
     } else if (message.type === 'CONTENT_EVENT') {
+        // Only process media events from the currently selected tab — ignore
+        // stale content scripts in previously-selected tabs. Popup-originated
+        // events (no sender.tab) always pass through.
+        if (sender.tab && currentTabId && currentTabId !== sender.tab.id) {
+            sendResponse({ status: 'ignored_unselected_tab' });
+            return;
+        }
         const processEvent = () => {
             // Host Control Mode (sender-side): a guest in host-only mode must not
             // drive the room. Don't broadcast; hand the action back to content.js so

From 5863991bfb28bc80f3b13c7e9479237399bf306a Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 13:23:24 +0200
Subject: [PATCH 049/151] fix(host-control-mode): remove redundant
 CONTENT_EVENT guard, persist desync in storage, block stale tab
 HCM_DESYNC_STATE
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Original code at L1957 already validates sender.tab tabId against
currentTabId before calling processEvent() — added guard was
duplicate. HCM_DESYNC_STATE had no such guard; added with same
sender.tab && currentTabId pattern (popup-safe via undefined
short-circuit).

hcmDesynced now persisted in session storage:
- Restored in ensureState()
- Set on HCM_DESYNC_STATE change
- Reset to false in all 3 teardown storage.sets
Survives SW restarts; cleared on leave/switch/idle-room
---
 extension/background.js | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index e2123e5..5ab34f4 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1857,13 +1857,6 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             }
         });
     } else if (message.type === 'CONTENT_EVENT') {
-        // Only process media events from the currently selected tab — ignore
-        // stale content scripts in previously-selected tabs. Popup-originated
-        // events (no sender.tab) always pass through.
-        if (sender.tab && currentTabId && currentTabId !== sender.tab.id) {
-            sendResponse({ status: 'ignored_unselected_tab' });
-            return;
-        }
         const processEvent = () => {
             // Host Control Mode (sender-side): a guest in host-only mode must not
             // drive the room. Don't broadcast; hand the action back to content.js so

From 2928393b4c6ee4823de6936feae28e0b35c2824a Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 15:45:33 +0200
Subject: [PATCH 050/151] fix(host-control-mode): reconcile desync state on
 content reinjection
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Fixes a split-brain where a guest who chose "watch on my own" and then reloaded
the video page would appear stuck as "Solo" to the host while actually being
back in sync.

Root cause: background persists hcmDesynced (survives SW restart) and attaches
it to content-driven heartbeats, but a freshly injected content script started
with hcmDesynced=false and GET_CONTROL_MODE never returned the desync state — so
content re-applied host commands (synced) while background kept relaying
desynced=true to the host.

Fix: GET_CONTROL_MODE now also returns desynced; content adopts it on init
(re-shows the badge) and also adopts hostPeerId so later host-change resets work.
Desync now survives a page reload consistently on both sides, as intended.

Verified the full path: background.js heartbeat (1555 omits / 2018 attaches),
reset paths, CONTENT_BOOT and keepAlive-disconnect (neither reset it), content
sendHeartbeat on inject.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/background.js | 7 +++++--
 extension/content.js    | 7 +++++++
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 5ab34f4..dfac02a 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1705,8 +1705,11 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         emit(EVENTS.SET_CONTROL_MODE, { controlMode: mode });
         sendResponse({ status: 'ok' });
     } else if (message.type === 'GET_CONTROL_MODE') {
-        // content.js asks for current mode/role (e.g. injected after ROOM_DATA).
-        sendResponse({ controlMode, hostPeerId, amHost: amHost() });
+        // content.js asks for current mode/role on (re)injection. Include the
+        // persisted desync state so a page reload re-adopts it — otherwise a fresh
+        // content script would start synced while background keeps relaying us as
+        // "Solo" to the host (stale-badge split-brain).
+        sendResponse({ controlMode, hostPeerId, amHost: amHost(), desynced: hcmDesynced });
     } else if (message.type === 'REQUEST_HOST_SYNC') {
         // content.js resync: hand back the host's extrapolated current position.
         sendResponse({ target: getHostSyncTarget() });
diff --git a/extension/content.js b/extension/content.js
index 4f1b385..66f97d3 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -1435,6 +1435,13 @@
         if (chrome.runtime.lastError || !res) return;
         hcmControlMode = res.controlMode || 'everyone';
         hcmAmHost = !!res.amHost;
+        hcmHostPeerId = res.hostPeerId || null;
+        // Re-adopt persisted desync after a page reload so we don't start synced
+        // while background still relays us as "Solo" to the host (split-brain).
+        if (res.desynced && !hcmDesynced) {
+            hcmDesynced = true;
+            hcmShowBadge();
+        }
     });
 
 })();

From 96e2207cf32ca8dce24bab778ac8eb3181627416 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 15:52:49 +0200
Subject: [PATCH 051/151] fix(host-control-mode): retry host-sync on dialog
 "Stay in sync" too
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The Resync badge already retried REQUEST_HOST_SYNC when the host's state wasn't
known yet, but the dialog's "Stay in sync" path did a single no-retry request —
so a stay tap right after the host paused (before a heartbeat propagated) could
silently leave the guest paused/out of sync. Extracted the retry loop into a
shared hcmRequestHostSyncWithRetry() and used it in both paths.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/content.js | 42 ++++++++++++++++++++++--------------------
 1 file changed, 22 insertions(+), 20 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index 66f97d3..081daf4 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -181,6 +181,25 @@
         reportLog('Host-only: snapped back to host position', 'info');
     }
 
+    // Resync to the host's current position, retrying briefly if the host's state
+    // isn't known yet (e.g. they just paused and no heartbeat has propagated) —
+    // otherwise the request is a silent no-op and the user thinks they're synced
+    // when they aren't. Shared by the dialog's "Stay in sync" and the Resync badge.
+    function hcmRequestHostSyncWithRetry() {
+        let attempts = 0;
+        const tryOnce = () => {
+            chrome.runtime.sendMessage({ type: 'REQUEST_HOST_SYNC' }, (res) => {
+                if (chrome.runtime.lastError || !res || !res.target) {
+                    if (++attempts < 5) setTimeout(tryOnce, 250);
+                    else reportLog('Host-only: resync requested but host state unavailable', 'warn');
+                    return;
+                }
+                hcmSnapBackToHost(res.target);
+            });
+        };
+        tryOnce();
+    }
+
     // Entry point: background told us our local action was blocked in host-only.
     function hcmHandleBlocked(action, target) {
         // HOST_BLOCKED is only ever sent to a gated guest (background verifies
@@ -254,10 +273,7 @@
         // potentially stale target captured at HOST_BLOCKED time (M-1).
         const stay = () => {
             if (settled) return; settled = true; hcmRemoveDialog();
-            chrome.runtime.sendMessage({ type: 'REQUEST_HOST_SYNC' }, (res) => {
-                if (chrome.runtime.lastError) return;
-                if (res && res.target) hcmSnapBackToHost(res.target);
-            });
+            hcmRequestHostSyncWithRetry();
         };
         const solo = () => { if (settled) return; settled = true; hcmRemoveDialog(); hcmEnterDesync(); };
         stayBtn.addEventListener('click', stay);
@@ -283,22 +299,8 @@
         if (wasDesynced) {
             chrome.runtime.sendMessage({ type: 'HCM_DESYNC_STATE', desynced: false }).catch(() => {});
         }
-        // Resync: ask background for the host's current position and snap to it.
-        // Retry briefly if the host's state isn't known yet (e.g. they just paused
-        // and no heartbeat has propagated) — otherwise the user's "Resync" tap is
-        // a silent no-op and they think they're synced when they aren't (L-3).
-        let attempts = 0;
-        const tryResync = () => {
-            chrome.runtime.sendMessage({ type: 'REQUEST_HOST_SYNC' }, (res) => {
-                if (chrome.runtime.lastError || !res || !res.target) {
-                    if (++attempts < 5) setTimeout(tryResync, 250);
-                    else reportLog('Host-only: resync requested but host state unavailable', 'warn');
-                    return;
-                }
-                hcmSnapBackToHost(res.target);
-            });
-        };
-        tryResync();
+        // Resync to the host's current position (retries if host state not yet known).
+        hcmRequestHostSyncWithRetry();
         reportLog('Host-only: resynced with the host', 'info');
     }
 

From 95ff4608560f192aaddddc56f7c1db2879f2f67c Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 16:06:04 +0200
Subject: [PATCH 052/151] fix(host-control-mode): hold desync invariant + stop
 Solo-badge flicker
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Two issues surfaced by a holistic audit of the combined desync-persist +
reconcile-on-init changes:

1. Stale desync outside gated-guest state. hcmDesynced is persisted, but neither
   ROOM_DATA nor CONTROL_MODE cleared it when the local peer became host or the
   room switched to 'everyone'. Combined with reconcile-on-init, a desynced guest
   promoted to host (host-leave fallback) while content was reloading could
   re-adopt desynced=true — self-labelling "Solo" to all peers and ignoring host
   commands in 'everyone' mode. Enforce the invariant centrally
   (hcmEnforceDesyncInvariant: desynced ⟹ host-only && !host) on every role/mode
   change, and guard the content reconcile to only adopt when actually a gated guest.

2. Solo-badge flicker. The host-side PEER_STATUS handler set peer.desynced
   unconditionally, but the background-driven keepAlive heartbeat omits the field —
   so every ~30s it clobbered desynced to false, flickering the badge. Only update
   when present (matching the sibling fields), and include desynced in the
   background heartbeat so both heartbeat sources are consistent.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/background.js | 22 ++++++++++++++++++++--
 extension/content.js    |  4 +++-
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index dfac02a..f372993 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -680,6 +680,18 @@ async function connect() {
 }
 
 
+// Invariant: only a gated guest (host-only room AND not the host) can be
+// "desynced". Any role/mode change that makes us the host, or switches the room
+// to 'everyone', must clear the persisted flag — otherwise a stale value would
+// mislabel us as "Solo" to peers and (in content) keep us ignoring host commands
+// after the reason to is gone. Call after any controlMode/hostPeerId change.
+function hcmEnforceDesyncInvariant() {
+    if (hcmDesynced && !(controlMode === CONTROL_MODES.HOST_ONLY && !amHost())) {
+        hcmDesynced = false;
+        if (storageInitialized) chrome.storage.session.set({ hcmDesynced: false });
+    }
+}
+
 function broadcastControlMode() {
     // Notify popup (role badge / host toggle) and the active content tab
     // (so it can enable/disable the host-only guest gate).
@@ -943,6 +955,7 @@ function handleServerEvent(event, data) {
             // Host Control Mode: adopt room role/mode on (re)join.
             controlMode = data.controlMode || CONTROL_MODES.EVERYONE;
             hostPeerId = data.hostPeerId || null;
+            hcmEnforceDesyncInvariant();
             broadcastControlMode();
             markRoomPotentiallyIdle();
             if (currentRoom && Array.isArray(currentRoom.peers)) {
@@ -1005,6 +1018,7 @@ function handleServerEvent(event, data) {
             // Host Control Mode changed (toggle or host-leave fallback).
             controlMode = data.controlMode || CONTROL_MODES.EVERYONE;
             hostPeerId = data.hostPeerId || null;
+            hcmEnforceDesyncInvariant();
             if (currentRoom) {
                 currentRoom.controlMode = controlMode;
                 currentRoom.hostPeerId = hostPeerId;
@@ -1215,7 +1229,10 @@ function handleServerEvent(event, data) {
                             peer.mediaTitle = data.mediaTitle !== undefined ? data.mediaTitle : peer.mediaTitle;
                             peer.volume = data.volume !== undefined ? data.volume : peer.volume;
                             peer.muted = data.muted !== undefined ? data.muted : peer.muted;
-                            peer.desynced = data.desynced === true;
+                            // Only update when present — the background-driven keepAlive
+                            // heartbeat omits 'desynced', and clobbering it to false there
+                            // would make the host's "Solo" badge flicker between heartbeats.
+                            if (data.desynced !== undefined) peer.desynced = data.desynced === true;
 
                             const timeSinceReactive = peer.lastReactiveUpdate ? (Date.now() - peer.lastReactiveUpdate) : Infinity;
                             const ignoreStatus = timeSinceReactive < 300;
@@ -1556,7 +1573,8 @@ chrome.alarms.onAlarm.addListener(async (alarm) => {
                     peerId,
                     status: 'heartbeat',
                     username: settings.username,
-                    tabTitle: currentTabTitle
+                    tabTitle: currentTabTitle,
+                    desynced: hcmDesynced
                 });
             }
         }
diff --git a/extension/content.js b/extension/content.js
index 081daf4..daa4d80 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -1440,7 +1440,9 @@
         hcmHostPeerId = res.hostPeerId || null;
         // Re-adopt persisted desync after a page reload so we don't start synced
         // while background still relays us as "Solo" to the host (split-brain).
-        if (res.desynced && !hcmDesynced) {
+        // Only when we're actually a gated guest — never adopt a stale flag as the
+        // host or in 'everyone' mode (would self-label "Solo" / ignore commands).
+        if (res.desynced && res.controlMode === 'host-only' && !res.amHost && !hcmDesynced) {
             hcmDesynced = true;
             hcmShowBadge();
         }

From bb030a973783fdeead6b9759d67102644fadf0fc Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 26 Jun 2026 16:26:31 +0200
Subject: [PATCH 053/151] feat(host-control-mode): localize the in-page dialog
 & badge
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The host-control desync dialog and the "watching on your own" badge were
hardcoded English — content.js has no i18n loader. Background does, so it now
resolves the strings (GET_HCM_STRINGS: loadLocale + getMessage) and content
fetches them on init with English fallbacks, re-rendering the badge if it was
already shown. The dialog body is now generic (dropped the paused/jumped verb)
to keep translation clean across languages.

Adds 6 keys (HCM_DIALOG_TITLE/BODY/STAY/SOLO, HCM_BADGE_SOLO/RESYNC) translated
across all 15 popup locales.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/host-control-mode-EDGECASES.md |  5 +++--
 extension/background.js             | 14 ++++++++++++++
 extension/content.js                | 30 +++++++++++++++++++++++------
 extension/locales/de.json           |  6 ++++++
 extension/locales/en.json           |  6 ++++++
 extension/locales/es.json           |  6 ++++++
 extension/locales/fr.json           |  6 ++++++
 extension/locales/it.json           |  6 ++++++
 extension/locales/ja.json           |  6 ++++++
 extension/locales/ko.json           |  6 ++++++
 extension/locales/nl.json           |  6 ++++++
 extension/locales/pl.json           |  6 ++++++
 extension/locales/pt-BR.json        |  6 ++++++
 extension/locales/pt.json           |  6 ++++++
 extension/locales/ru.json           |  6 ++++++
 extension/locales/tr.json           |  6 ++++++
 extension/locales/uk.json           |  6 ++++++
 extension/locales/zh.json           |  6 ++++++
 18 files changed, 131 insertions(+), 8 deletions(-)

diff --git a/docs/host-control-mode-EDGECASES.md b/docs/host-control-mode-EDGECASES.md
index 501bd42..ebb425d 100644
--- a/docs/host-control-mode-EDGECASES.md
+++ b/docs/host-control-mode-EDGECASES.md
@@ -49,8 +49,9 @@ Deferred by decision (see §8): host grace period on disconnect (EC-10).
 - ~~**Control-mode race at join:**~~ FIXED — `hcmHandleBlocked` now treats `HOST_BLOCKED`
   as authoritative (adopts host-only/guest role) instead of re-checking local mode,
   since background only sends it to gated guests.
-- **Dialog/badge text is English-only** — content.js has no i18n loader; the in-page
-  strings aren't localized yet. Follow-up.
+- ~~**Dialog/badge text is English-only**~~ FIXED — background resolves the strings
+  via GET_HCM_STRINGS (it has the i18n loader); content fetches them on init with
+  English fallback. 6 new keys (HCM_DIALOG_*/HCM_BADGE_*) across all 15 locales.
 
 ---
 
diff --git a/extension/background.js b/extension/background.js
index f372993..f280fe8 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1731,6 +1731,20 @@ async function handleAsyncMessage(message, sender, sendResponse) {
     } else if (message.type === 'REQUEST_HOST_SYNC') {
         // content.js resync: hand back the host's extrapolated current position.
         sendResponse({ target: getHostSyncTarget() });
+    } else if (message.type === 'GET_HCM_STRINGS') {
+        // Localized strings for the in-page host-control dialog/badge. content.js
+        // has no i18n loader of its own, so background resolves them here.
+        const settings = await chrome.storage.local.get(['locale']);
+        const lang = settings.locale || getSystemLanguage();
+        await loadLocale(lang);
+        sendResponse({
+            title:  getMessage('HCM_DIALOG_TITLE'),
+            body:   getMessage('HCM_DIALOG_BODY'),
+            stay:   getMessage('HCM_DIALOG_STAY'),
+            solo:   getMessage('HCM_DIALOG_SOLO'),
+            badge:  getMessage('HCM_BADGE_SOLO'),
+            resync: getMessage('HCM_BADGE_RESYNC')
+        });
     } else if (message.type === 'HCM_DESYNC_STATE') {
         // content.js tells us whether the local user chose to watch on their own.
         // Only accept from the currently selected tab.
diff --git a/extension/content.js b/extension/content.js
index daa4d80..2351333 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -115,6 +115,16 @@
     let hcmLastUserGestureAt = 0;      // for deliberate-vs-involuntary classification
     let hcmBufferingUntil = 0;         // set on 'waiting' — buffering grace window
     let hcmDialogTimer = null;         // 8s auto-stay timer — cleared on dialog replace (H-4)
+    // Localized strings for the in-page dialog/badge (content has no i18n loader;
+    // background resolves them via GET_HCM_STRINGS on init). English fallbacks here.
+    const hcmStrings = {
+        title:  'KoalaSync · Host controls this room',
+        body:   'Only the host can control playback in this room. Keep watching together, or watch on your own?',
+        stay:   'Stay in sync',
+        solo:   'Watch on my own',
+        badge:  'Watching on your own',
+        resync: 'Resync'
+    };
     const HCM_USER_GESTURE_MS = 1000;
     const HCM_BUFFERING_GRACE_MS = 1500;
     const HCM_SNAP_BACK_COOLDOWN_MS = 1000;
@@ -256,12 +266,11 @@
 
         const wrap = hcmEl('div', 'position:fixed;z-index:2147483647;left:50%;bottom:32px;transform:translateX(-50%);background:#1f2937;color:#f9fafb;font:14px/1.4 system-ui,sans-serif;padding:16px 18px;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.45);max-width:360px;border:1px solid #374151');
         wrap.setAttribute('role', 'dialog');
-        const verb = action === EVENTS.SEEK ? 'jumped' : 'paused';
-        const title = hcmEl('div', 'font-weight:600;margin-bottom:6px', 'KoalaSync · Host controls this room');
-        const body = hcmEl('div', 'margin-bottom:12px;color:#d1d5db', `You ${verb} your player. Only the host can control the group. Keep watching together, or watch on your own?`);
+        const title = hcmEl('div', 'font-weight:600;margin-bottom:6px', hcmStrings.title);
+        const body = hcmEl('div', 'margin-bottom:12px;color:#d1d5db', hcmStrings.body);
         const btnRow = hcmEl('div', 'display:flex;gap:8px;justify-content:flex-end');
-        const soloBtn = hcmEl('button', 'background:#374151;color:#f9fafb;border:0;padding:8px 12px;border-radius:8px;cursor:pointer', 'Watch on my own');
-        const stayBtn = hcmEl('button', 'background:#10b981;color:#062a20;border:0;padding:8px 12px;border-radius:8px;cursor:pointer;font-weight:600', 'Stay in sync');
+        const soloBtn = hcmEl('button', 'background:#374151;color:#f9fafb;border:0;padding:8px 12px;border-radius:8px;cursor:pointer', hcmStrings.solo);
+        const stayBtn = hcmEl('button', 'background:#10b981;color:#062a20;border:0;padding:8px 12px;border-radius:8px;cursor:pointer;font-weight:600', hcmStrings.stay);
         btnRow.append(soloBtn, stayBtn);
         wrap.append(title, body, btnRow);
         root.appendChild(wrap);
@@ -326,7 +335,7 @@
         const host = hcmEl('div', 'all:initial');
         const root = host.attachShadow({ mode: 'open' });
         const b = hcmEl('div', 'position:fixed;z-index:2147483646;right:16px;bottom:16px;background:#b45309;color:#fff;font:13px/1.3 system-ui,sans-serif;padding:8px 12px;border-radius:10px;box-shadow:0 6px 20px rgba(0,0,0,.4);cursor:pointer;display:flex;align-items:center;gap:8px');
-        b.append(hcmEl('span', null, '● Watching on your own'), hcmEl('span', 'text-decoration:underline', 'Resync'));
+        b.append(hcmEl('span', null, '● ' + hcmStrings.badge), hcmEl('span', 'text-decoration:underline', hcmStrings.resync));
         b.addEventListener('click', hcmExitDesync);
         root.appendChild(b);
         document.body.appendChild(host);
@@ -1448,4 +1457,13 @@
         }
     });
 
+    // Pull localized strings for the in-page dialog/badge (English fallback above).
+    chrome.runtime.sendMessage({ type: 'GET_HCM_STRINGS' }, (res) => {
+        if (chrome.runtime.lastError || !res) return;
+        Object.keys(hcmStrings).forEach(k => { if (res[k]) hcmStrings[k] = res[k]; });
+        // If the badge is already showing (early desync), re-render it with the
+        // localized text now that we have it.
+        if (hcmBadgeHost) { hcmRemoveBadge(); hcmShowBadge(); }
+    });
+
 })();
diff --git a/extension/locales/de.json b/extension/locales/de.json
index cd21b0e..1313c47 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Gast",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Schaut alleine — ignoriert die Befehle des Hosts",
+  "HCM_DIALOG_TITLE": "KoalaSync · Der Host steuert diesen Raum",
+  "HCM_DIALOG_BODY": "Nur der Host kann die Wiedergabe in diesem Raum steuern. Weiter gemeinsam schauen oder allein weiterschauen?",
+  "HCM_DIALOG_STAY": "Synchron bleiben",
+  "HCM_DIALOG_SOLO": "Allein weiterschauen",
+  "HCM_BADGE_SOLO": "Du schaust allein",
+  "HCM_BADGE_RESYNC": "Neu sync",
   "NO_PEERS_CONNECTED": "Keine Teilnehmer verbunden",
   "BTN_LEAVE_ROOM": "Raum verlassen",
   "LABEL_SELECT_VIDEO": "Video auswählen",
diff --git a/extension/locales/en.json b/extension/locales/en.json
index 358e6c8..3bc6356 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Guest",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Watching on their own — host's commands are ignored",
+  "HCM_DIALOG_TITLE": "KoalaSync · Host controls this room",
+  "HCM_DIALOG_BODY": "Only the host can control playback in this room. Keep watching together, or watch on your own?",
+  "HCM_DIALOG_STAY": "Stay in sync",
+  "HCM_DIALOG_SOLO": "Watch on my own",
+  "HCM_BADGE_SOLO": "Watching on your own",
+  "HCM_BADGE_RESYNC": "Resync",
   "NO_PEERS_CONNECTED": "No peers connected",
   "BTN_LEAVE_ROOM": "Leave Room",
   "LABEL_SELECT_VIDEO": "Select Video",
diff --git a/extension/locales/es.json b/extension/locales/es.json
index af95d76..2c1f2d6 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Invitado",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Viendo por su cuenta — ignora los comandos del anfitrión",
+  "HCM_DIALOG_TITLE": "KoalaSync · El anfitrión controla esta sala",
+  "HCM_DIALOG_BODY": "Solo el anfitrión puede controlar la reproducción en esta sala. ¿Seguir viendo juntos o ver por tu cuenta?",
+  "HCM_DIALOG_STAY": "Seguir sincronizado",
+  "HCM_DIALOG_SOLO": "Ver por mi cuenta",
+  "HCM_BADGE_SOLO": "Viendo por tu cuenta",
+  "HCM_BADGE_RESYNC": "Resincronizar",
   "NO_PEERS_CONNECTED": "Sin participantes conectados",
   "BTN_LEAVE_ROOM": "Salir de la sala",
   "LABEL_SELECT_VIDEO": "Seleccionar video",
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index 944912c..0ff7b82 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Invité",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Regarde de son côté — ignore les commandes de l'hôte",
+  "HCM_DIALOG_TITLE": "KoalaSync · L'hôte contrôle ce salon",
+  "HCM_DIALOG_BODY": "Seul l'hôte peut contrôler la lecture dans ce salon. Continuer à regarder ensemble, ou regarder de votre côté ?",
+  "HCM_DIALOG_STAY": "Rester synchronisé",
+  "HCM_DIALOG_SOLO": "Regarder de mon côté",
+  "HCM_BADGE_SOLO": "Vous regardez seul",
+  "HCM_BADGE_RESYNC": "Resynchroniser",
   "NO_PEERS_CONNECTED": "Aucun membre connecté",
   "BTN_LEAVE_ROOM": "Quitter le salon",
   "LABEL_SELECT_VIDEO": "Choisir une vidéo",
diff --git a/extension/locales/it.json b/extension/locales/it.json
index c911ed4..b5780b7 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Ospite",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Guarda per conto proprio — ignora i comandi dell'host",
+  "HCM_DIALOG_TITLE": "KoalaSync · L'host controlla questa stanza",
+  "HCM_DIALOG_BODY": "Solo l'host può controllare la riproduzione in questa stanza. Continuare a guardare insieme o guardare per conto tuo?",
+  "HCM_DIALOG_STAY": "Resta sincronizzato",
+  "HCM_DIALOG_SOLO": "Guarda per conto mio",
+  "HCM_BADGE_SOLO": "Stai guardando da solo",
+  "HCM_BADGE_RESYNC": "Risincronizza",
   "NO_PEERS_CONNECTED": "Nessun partecipante connesso",
   "BTN_LEAVE_ROOM": "Lascia Stanza",
   "LABEL_SELECT_VIDEO": "Seleziona Video",
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index 9b5bcda..f4f6e66 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "ゲスト",
   "BADGE_DESYNCED": "ソロ",
   "TOOLTIP_PEER_DESYNCED": "単独で視聴中 — ホストのコマンドを無視しています",
+  "HCM_DIALOG_TITLE": "KoalaSync · ホストがこのルームを操作中",
+  "HCM_DIALOG_BODY": "このルームではホストのみが再生を操作できます。一緒に視聴を続けますか、それとも自分だけで視聴しますか？",
+  "HCM_DIALOG_STAY": "同期を維持",
+  "HCM_DIALOG_SOLO": "自分だけで視聴",
+  "HCM_BADGE_SOLO": "自分だけで視聴中",
+  "HCM_BADGE_RESYNC": "再同期",
   "NO_PEERS_CONNECTED": "接続しているメンバーはいません",
   "BTN_LEAVE_ROOM": "ルームを退室",
   "LABEL_SELECT_VIDEO": "ビデオを選択",
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index 595db59..f9bbe80 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "게스트",
   "BADGE_DESYNCED": "단독",
   "TOOLTIP_PEER_DESYNCED": "혼자 시청 중 — 호스트 명령을 무시합니다",
+  "HCM_DIALOG_TITLE": "KoalaSync · 호스트가 이 방을 제어합니다",
+  "HCM_DIALOG_BODY": "이 방에서는 호스트만 재생을 제어할 수 있습니다. 계속 함께 보시겠어요, 아니면 혼자 보시겠어요?",
+  "HCM_DIALOG_STAY": "동기화 유지",
+  "HCM_DIALOG_SOLO": "혼자 보기",
+  "HCM_BADGE_SOLO": "혼자 시청 중",
+  "HCM_BADGE_RESYNC": "다시 동기화",
   "NO_PEERS_CONNECTED": "연결된 참여자가 없습니다",
   "BTN_LEAVE_ROOM": "방 나가기",
   "LABEL_SELECT_VIDEO": "비디오 선택",
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index 4c808ac..fe6ede8 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Gast",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Zelfstandig aan het kijken — negeert de commando's van de host",
+  "HCM_DIALOG_TITLE": "KoalaSync · De host bedient deze kamer",
+  "HCM_DIALOG_BODY": "Alleen de host kan de weergave in deze kamer bedienen. Samen blijven kijken of zelf verder kijken?",
+  "HCM_DIALOG_STAY": "Gesynchroniseerd blijven",
+  "HCM_DIALOG_SOLO": "Zelf verder kijken",
+  "HCM_BADGE_SOLO": "Je kijkt zelfstandig",
+  "HCM_BADGE_RESYNC": "Opnieuw sync",
   "NO_PEERS_CONNECTED": "Geen deelnemers verbonden",
   "BTN_LEAVE_ROOM": "Kamer verlaten",
   "LABEL_SELECT_VIDEO": "Selecteer video",
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index b5f3480..e28a7ce 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Gość",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Ogląda samodzielnie — ignoruje polecenia hosta",
+  "HCM_DIALOG_TITLE": "KoalaSync · Host steruje tym pokojem",
+  "HCM_DIALOG_BODY": "Tylko host może sterować odtwarzaniem w tym pokoju. Oglądać dalej razem czy oglądać samodzielnie?",
+  "HCM_DIALOG_STAY": "Pozostań zsynchronizowany",
+  "HCM_DIALOG_SOLO": "Oglądaj samodzielnie",
+  "HCM_BADGE_SOLO": "Oglądasz samodzielnie",
+  "HCM_BADGE_RESYNC": "Zsynchronizuj",
   "NO_PEERS_CONNECTED": "Brak połączonych uczestników",
   "BTN_LEAVE_ROOM": "Opuść pokój",
   "LABEL_SELECT_VIDEO": "Wybierz wideo",
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index a8b2e31..d353142 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Convidado",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Assistindo por conta própria — ignora os comandos do anfitrião",
+  "HCM_DIALOG_TITLE": "KoalaSync · O anfitrião controla esta sala",
+  "HCM_DIALOG_BODY": "Somente o anfitrião pode controlar a reprodução nesta sala. Continuar assistindo juntos ou assistir por conta própria?",
+  "HCM_DIALOG_STAY": "Manter sincronizado",
+  "HCM_DIALOG_SOLO": "Assistir por conta própria",
+  "HCM_BADGE_SOLO": "Assistindo por conta própria",
+  "HCM_BADGE_RESYNC": "Ressincronizar",
   "NO_PEERS_CONNECTED": "Sem participantes conectados",
   "BTN_LEAVE_ROOM": "Sair da sala",
   "LABEL_SELECT_VIDEO": "Selecionar vídeo",
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index 693b0ef..ab5544d 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Convidado",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "A ver por conta própria — ignora os comandos do anfitrião",
+  "HCM_DIALOG_TITLE": "KoalaSync · O anfitrião controla esta sala",
+  "HCM_DIALOG_BODY": "Só o anfitrião pode controlar a reprodução nesta sala. Continuar a ver em conjunto ou ver por conta própria?",
+  "HCM_DIALOG_STAY": "Manter sincronizado",
+  "HCM_DIALOG_SOLO": "Ver por minha conta",
+  "HCM_BADGE_SOLO": "A ver por tua conta",
+  "HCM_BADGE_RESYNC": "Ressincronizar",
   "NO_PEERS_CONNECTED": "Nenhum participante ligado",
   "BTN_LEAVE_ROOM": "Sair da Sala",
   "LABEL_SELECT_VIDEO": "Selecionar Vídeo",
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index c17d3fb..66a222c 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Гость",
   "BADGE_DESYNCED": "Соло",
   "TOOLTIP_PEER_DESYNCED": "Смотрит отдельно — игнорирует команды ведущего",
+  "HCM_DIALOG_TITLE": "KoalaSync · Комнатой управляет ведущий",
+  "HCM_DIALOG_BODY": "Управлять воспроизведением в этой комнате может только ведущий. Продолжить смотреть вместе или смотреть самостоятельно?",
+  "HCM_DIALOG_STAY": "Оставаться синхронно",
+  "HCM_DIALOG_SOLO": "Смотреть самостоятельно",
+  "HCM_BADGE_SOLO": "Вы смотрите самостоятельно",
+  "HCM_BADGE_RESYNC": "Синхронизировать",
   "NO_PEERS_CONNECTED": "Нет подключенных участников",
   "BTN_LEAVE_ROOM": "Выйти из комнаты",
   "LABEL_SELECT_VIDEO": "Выбрать видео",
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index f075493..ff4918b 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Misafir",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Tek başına izliyor — sunucu komutlarını yok sayar",
+  "HCM_DIALOG_TITLE": "KoalaSync · Bu odayı sunucu kontrol ediyor",
+  "HCM_DIALOG_BODY": "Bu odada oynatmayı yalnızca sunucu kontrol edebilir. Birlikte izlemeye devam mı, yoksa kendi başına mı izlemek istiyorsun?",
+  "HCM_DIALOG_STAY": "Senkron kal",
+  "HCM_DIALOG_SOLO": "Kendi başıma izle",
+  "HCM_BADGE_SOLO": "Kendi başına izliyorsun",
+  "HCM_BADGE_RESYNC": "Yeniden senkronize et",
   "NO_PEERS_CONNECTED": "Bağlı kimse yok",
   "BTN_LEAVE_ROOM": "Odadan Ayrıl",
   "LABEL_SELECT_VIDEO": "Video Seç",
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
index 40a5bc2..a76366d 100644
--- a/extension/locales/uk.json
+++ b/extension/locales/uk.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "Гість",
   "BADGE_DESYNCED": "Соло",
   "TOOLTIP_PEER_DESYNCED": "Дивиться окремо — ігнорує команди ведучого",
+  "HCM_DIALOG_TITLE": "KoalaSync · Кімнатою керує ведучий",
+  "HCM_DIALOG_BODY": "Керувати відтворенням у цій кімнаті може лише ведучий. Продовжити дивитися разом чи дивитися самостійно?",
+  "HCM_DIALOG_STAY": "Залишатися синхронно",
+  "HCM_DIALOG_SOLO": "Дивитися самостійно",
+  "HCM_BADGE_SOLO": "Ви дивитеся самостійно",
+  "HCM_BADGE_RESYNC": "Синхронізувати",
   "NO_PEERS_CONNECTED": "Немає підключених однорангових пристроїв",
   "BTN_LEAVE_ROOM": "Вийти з кімнати",
   "LABEL_SELECT_VIDEO": "Виберіть Відео",
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
index 5ba0b55..9169d7b 100644
--- a/extension/locales/zh.json
+++ b/extension/locales/zh.json
@@ -52,6 +52,12 @@
   "BADGE_GUEST": "访客",
   "BADGE_DESYNCED": "单独",
   "TOOLTIP_PEER_DESYNCED": "单独观看中 — 忽略主持人的命令",
+  "HCM_DIALOG_TITLE": "KoalaSync · 主持人控制本房间",
+  "HCM_DIALOG_BODY": "本房间只有主持人可以控制播放。继续一起观看，还是自己单独观看？",
+  "HCM_DIALOG_STAY": "保持同步",
+  "HCM_DIALOG_SOLO": "自己单独观看",
+  "HCM_BADGE_SOLO": "正在单独观看",
+  "HCM_BADGE_RESYNC": "重新同步",
   "NO_PEERS_CONNECTED": "没有对等点连接",
   "BTN_LEAVE_ROOM": "离开房间",
   "LABEL_SELECT_VIDEO": "选择视频",

From d26b95985d753db1a879ba4c6a6cd62df3778870 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sat, 27 Jun 2026 01:29:00 +0200
Subject: [PATCH 054/151] fix(host-control-mode): only show host-control card
 when meaningful
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The card was rendered in every room with a "Guest" badge by default — confusing
in normal rooms, and outright misleading against a relay that doesn't yet support
host control (older server omits hostPeerId, so amHost is always false and nobody
is ever recognized as host).

Now the card shows only when it's meaningful: the host always sees it (to toggle
host-only), a guest sees it only while host-only is active, and it's hidden in a
normal "everyone" room and whenever the server doesn't advertise hostPeerId
(feature unavailable). Thread hostPeerId through updateHostControlUI to detect
server support.

Note: the feature still requires the relay to run the host-control server code;
this just makes the client degrade cleanly instead of showing a stray "Guest".

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/popup.js | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/extension/popup.js b/extension/popup.js
index 70c4f99..27facaf 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -249,7 +249,7 @@ async function init() {
             updatePingDisplay(res.ping);
             updatePeerList(res.peers);
             lastKnownPeers = res.peers || [];
-            updateHostControlUI(res.controlMode, res.amHost, res.status === 'connected');
+            updateHostControlUI(res.controlMode, res.amHost, res.hostPeerId, res.status === 'connected');
             if (res.lastActionState) updateLastActionUI(res.lastActionState, res.peers);
 
             // If user has a room configured but background is not connected (disconnected or idle),
@@ -313,17 +313,26 @@ function toggleUIState(inRoom) {
 // True when we're a guest in a host-only room → remote-control buttons are locked.
 let hcmGuestLocked = false;
 
-function updateHostControlUI(controlMode, amHost, inRoom) {
+function updateHostControlUI(controlMode, amHost, hostPeerId, inRoom) {
     const card = elements.hostControlCard;
     if (!card) return;
-    if (!inRoom) {
+    const hostOnly = controlMode === 'host-only';
+    // The server only sends hostPeerId once it supports host control. Against an
+    // older relay it's absent → the feature is unavailable, so hide the card
+    // entirely instead of showing a misleading "Guest".
+    const serverSupportsHostControl = !!hostPeerId;
+    // Only show the card when it's actually meaningful:
+    //   - host: always (so they can enable/disable host-only)
+    //   - guest: only while host-only is active (explains why they can't control)
+    // A guest in a normal "everyone" room sees nothing — no confusing noise.
+    const show = inRoom && serverSupportsHostControl && (amHost || hostOnly);
+    if (!show) {
         card.style.display = 'none';
         hcmGuestLocked = false;
         setRemoteControlsLocked(false);
         return;
     }
     card.style.display = 'block';
-    const hostOnly = controlMode === 'host-only';
     if (elements.hostRoleBadge) {
         elements.hostRoleBadge.textContent = amHost ? (getMessage('BADGE_HOST') || 'Host') : (getMessage('BADGE_GUEST') || 'Guest');
         elements.hostRoleBadge.style.background = amHost ? 'var(--accent)' : 'var(--text-muted)';
@@ -1736,7 +1745,7 @@ chrome.runtime.onMessage.addListener((msg) => {
         if (msg.peers) detectPeerChanges(msg.peers);
     } else if (msg.type === 'CONTROL_MODE') {
         const inRoom = elements.sectionActive && elements.sectionActive.style.display === 'block';
-        updateHostControlUI(msg.controlMode, msg.amHost, inRoom);
+        updateHostControlUI(msg.controlMode, msg.amHost, msg.hostPeerId, inRoom);
     } else if (msg.type === 'CONNECTION_STATUS') {
         if (msg.status === 'connected' || msg.status === 'disconnected') {
             if (joinBtnTimeout) { clearTimeout(joinBtnTimeout); joinBtnTimeout = null; }
@@ -1754,7 +1763,7 @@ chrome.runtime.onMessage.addListener((msg) => {
                 if (res.peers) updatePeerList(res.peers);
                 if (res.lastActionState) updateLastActionUI(res.lastActionState, res.peers);
                 updatePingDisplay(res.ping);
-                updateHostControlUI(res.controlMode, res.amHost, true);
+                updateHostControlUI(res.controlMode, res.amHost, res.hostPeerId, true);
             });
         }
         if (msg.status === 'disconnected') {

From 9feafab6173a3e1605b2858069bc4c864dca6a6d Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sat, 27 Jun 2026 01:42:56 +0200
Subject: [PATCH 055/151] ci: publish beta relay Docker image for branch
 testing
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Adds a separate workflow that builds the server image and pushes it to GHCR under
non-production tags (beta, branch slug, sha-<commit>, and an optional custom tag
via manual dispatch) so the host-control branch can be deployed to a staging /
backup server and used as a custom server — without ever touching ':latest' that
the official relay tracks (flavor: latest=false).

Runs on push to feature/host-control-mode and on workflow_dispatch. Remove once
the feature is merged and released normally.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 .github/workflows/beta-server-image.yml | 75 +++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 .github/workflows/beta-server-image.yml

diff --git a/.github/workflows/beta-server-image.yml b/.github/workflows/beta-server-image.yml
new file mode 100644
index 0000000..25ae743
--- /dev/null
+++ b/.github/workflows/beta-server-image.yml
@@ -0,0 +1,75 @@
+name: Beta Server Image
+
+# Publishes the relay server as a Docker image under NON-production tags so a
+# feature branch can be deployed to a staging/backup server and used as a custom
+# server, without ever touching the ':latest' tag the official relay tracks.
+#
+# Tags produced (on ghcr.io/<owner>/<repo>):
+#   - beta                         moving channel pointer to the newest build
+#   - <branch-slug>                e.g. feature-host-control-mode
+#   - sha-<short-commit>           immutable, pin to an exact build
+#   - <custom>                     only on manual run, e.g. hostcontrol01
+# Never ':latest' (flavor: latest=false).
+#
+# Remove this workflow once the feature is merged & released the normal way.
+
+on:
+  push:
+    branches:
+      - feature/host-control-mode
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Extra immutable tag for this build (e.g. hostcontrol01). Optional.'
+        required: false
+        default: ''
+
+concurrency:
+  group: beta-image-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-beta-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v7
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v4
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v6
+        with:
+          images: ghcr.io/${{ github.repository }}
+          # Never publish ':latest' from a beta build.
+          flavor: |
+            latest=false
+          tags: |
+            type=raw,value=beta
+            type=ref,event=branch
+            type=sha,prefix=sha-
+            type=raw,value=${{ github.event.inputs.tag }},enable=${{ github.event_name == 'workflow_dispatch' && github.event.inputs.tag != '' }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v7
+        with:
+          context: .
+          file: server/Dockerfile
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

From 9963da2ebc95a0a41f313fa839d3cbe8fe24e02f Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sat, 27 Jun 2026 04:48:45 +0200
Subject: [PATCH 056/151] feat(host-control-mode): explicit server capabilities
 for feature detection
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Replace the implicit "hostPeerId present ⇒ feature supported" heuristic with an
explicit capabilities list the relay advertises in ROOM_DATA. Cleaner, self-
documenting, and the extensible hook for the planned co-host feature (owner
promotes guests to extra controllers) — a future 'co-host' capability + events
slot in without a protocol bump.

- shared: CAPABILITIES { HOST_CONTROL }.
- server: SERVER_CAPABILITIES advertised in ROOM_DATA.
- background: track serverCapabilities (empty against older relay), serverSupports(),
  thread hostControlSupported through GET_STATUS / GET_CONTROL_MODE / CONTROL_MODE.
- popup: gate the host-control card on the explicit capability instead of hostPeerId.

Backwards-compatible both ways: old relay omits the field → feature stays hidden
(no errors); old client ignores the field. WS test asserts ROOM_DATA advertises
the capability. Adds docs/host-control-mode-TESTING.md (beta-server setup, wss
caveat, two-new-clients note, verification checklist).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/host-control-mode-EDGECASES.md | 10 ++++
 docs/host-control-mode-TESTING.md   | 83 +++++++++++++++++++++++++++++
 extension/background.js             | 20 +++++--
 extension/popup.js                  | 14 ++---
 scripts/test-server-ws.mjs          | 10 ++++
 server/index.js                     | 10 +++-
 shared/constants.js                 | 10 ++++
 7 files changed, 143 insertions(+), 14 deletions(-)
 create mode 100644 docs/host-control-mode-TESTING.md

diff --git a/docs/host-control-mode-EDGECASES.md b/docs/host-control-mode-EDGECASES.md
index ebb425d..1233015 100644
--- a/docs/host-control-mode-EDGECASES.md
+++ b/docs/host-control-mode-EDGECASES.md
@@ -24,6 +24,16 @@ reading the code, not yet by watching them behave on each site.
 
 Deferred by decision (see §8): host grace period on disconnect (EC-10).
 
+### Capability detection (forward-compat hook)
+The relay advertises `capabilities: ['host-control']` in `ROOM_DATA`
+(`SERVER_CAPABILITIES` in server, `CAPABILITIES` in shared/constants). The client
+enables host-control UI/behavior only when the flag is present, so the feature
+degrades cleanly on an older relay (absent → off) and old clients ignore the
+field. This is the extensible hook for the planned **co-host** feature (owner
+promotes guests to additional controllers): it will add a `'co-host'` capability
++ events without a protocol bump or breaking older relays/clients. Add new flags
+to `CAPABILITIES` / `SERVER_CAPABILITIES` as features land.
+
 ### Pre-test self-audit (fixed)
 - **Popup remote buttons froze for guests** — in host-only a guest's Play/Pause/SYNC
   click was gated server-side but the button stuck on "Playing"/disabled with no
diff --git a/docs/host-control-mode-TESTING.md b/docs/host-control-mode-TESTING.md
new file mode 100644
index 0000000..7ad63e0
--- /dev/null
+++ b/docs/host-control-mode-TESTING.md
@@ -0,0 +1,83 @@
+# Host Control Mode — Beta Testing Guide
+
+> Temporary doc for branch `feature/host-control-mode`. Remove before merge.
+> The feature needs the **server** half too — the official relay
+> (`wss://syncserver.koalastuff.net`) doesn't run it yet, so test against a beta
+> server first.
+
+## 1. Run the beta relay (Docker)
+
+The branch publishes the server image to GHCR under non-production tags
+(`:beta` = newest branch build, `:sha-<commit>` = immutable pin). `:latest` is
+never touched.
+
+```bash
+# Log in (the package is private → PAT with read:packages)
+echo "$GHCR_PAT" | docker login ghcr.io -u <your-gh-user> --password-stdin
+
+# Pull + (re)create — NOTE: `docker restart` does NOT pick up a new image,
+# you must remove and re-run (or use compose / Watchtower).
+docker pull ghcr.io/shik3i/koalasync:beta
+docker rm -f koala-beta 2>/dev/null || true
+docker run -d --name koala-beta -p 3000:3000 \
+  -e SERVER_SALT='choose-your-own-salt' \
+  ghcr.io/shik3i/koalasync:beta
+```
+
+To always run the newest beta automatically, point **Watchtower** at the
+container — it does the pull → recreate whenever `:beta` moves.
+
+The `OFFICIAL_SERVER_TOKEN` is baked into `shared/constants.js`, so no token env
+is needed. Set `SERVER_SALT` (used for room-password hashing).
+
+## 2. Connect the extension to it
+
+⚠️ The client **force-upgrades `ws://` to `wss://` for any non-localhost host**
+(see background.js "Upgraded to wss:// for remote host"). So a bare
+`ws://your-server:3000` will fail without TLS. Two options:
+
+- **Quick (no TLS):** SSH-tunnel the port so it counts as local:
+  ```bash
+  ssh -L 3000:localhost:3000 your-beta-server
+  ```
+  then in the popup → **Manual Connect / Advanced → Custom →** `ws://localhost:3000`.
+- **Proper:** put the container behind a TLS reverse proxy (Caddy does automatic
+  HTTPS) → `wss://beta.yourdomain`.
+
+Then create/join a room.
+
+## 3. ⚠️ Use two *new* clients
+
+Test with **two browser profiles both running this branch build** (load unpacked
+from `extension/`, or install the built zip). A stock release client as a guest
+will be correctly gated by the server but has none of the content-side code, so
+it silently desyncs with no dialog/snap-back — that's expected degradation, not a
+bug, but it looks like one during testing.
+
+## 4. Verification checklist
+
+| # | Step | Expect |
+|---|------|--------|
+| 1 | Create a room (host) | Host Control card shows **Host** + the toggle |
+| 2 | Second profile joins | Guest sees no card while mode is "everyone" |
+| 3 | Host enables "Only I can control" | Guest's Play/Pause/SYNC buttons lock; card shows **Guest** |
+| 4 | Guest presses pause/space on the video | Brief flicker, snaps back to host position |
+| 5 | Guest pauses again | Dialog: "Stay in sync" / "Watch on my own" |
+| 6 | Guest → "Watch on my own" | Persistent "Solo" badge; host's peer list shows **Solo** |
+| 7 | Guest → "Resync" | Snaps back to host; Solo badge clears on both sides |
+| 8 | Guest tries Force-Sync / seek spam | Nothing propagates to the room |
+| 9 | Host disables host-only | Card hides for guest; controls unlock |
+| 10 | Host leaves the room | Room falls back to "everyone"; a remaining peer becomes host |
+| 11 | Reload the guest's page while desynced | Still shows Solo (state survives reload) |
+| 12 | Switch the popup language | Dialog/badge text is localized |
+
+## 5. Capability detection
+
+The relay advertises `capabilities: ['host-control']` in `ROOM_DATA`. The client
+only enables the feature when that flag is present, so:
+- against this beta server → feature on;
+- against the old official server → feature cleanly hidden (no errors).
+
+This is the extensible hook for the planned **co-host** feature (owner promotes
+guests to additional controllers) — it'll add a `'co-host'` capability + events
+without breaking older relays/clients.
diff --git a/extension/background.js b/extension/background.js
index f280fe8..d9fa4fa 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1,4 +1,4 @@
-import { EVENTS, CONTROL_MODES, PROTOCOL_VERSION, OFFICIAL_SERVER_URL, OFFICIAL_SERVER_TOKEN, EPISODE_LOBBY_TIMEOUT, FORCE_SYNC_TIMEOUT } from './shared/constants.js';
+import { EVENTS, CONTROL_MODES, CAPABILITIES, PROTOCOL_VERSION, OFFICIAL_SERVER_URL, OFFICIAL_SERVER_TOKEN, EPISODE_LOBBY_TIMEOUT, FORCE_SYNC_TIMEOUT } from './shared/constants.js';
 import { generateUsername } from './shared/names.js';
 import { loadLocale, getMessage, getSystemLanguage } from './i18n.js';
 import { sameEpisode } from './episode-utils.js';
@@ -74,6 +74,10 @@ const lastSeqBySender = {};               // senderId → last received seq (sta
 // --- Host Control Mode ---
 let controlMode = CONTROL_MODES.EVERYONE;  // 'everyone' | 'host-only'
 let hostPeerId = null;                     // peerId of the room host (creator / fallback)
+// Features the connected relay advertises in ROOM_DATA. Empty against an older
+// relay (no capabilities field) → host-control UI/behavior stays unavailable.
+let serverCapabilities = [];
+function serverSupports(cap) { return Array.isArray(serverCapabilities) && serverCapabilities.includes(cap); }
 // Local peer's desync state (content.js reports it via HCM_DESYNC_STATE). Relayed
 // in heartbeats so the host's popup UI can show "Solo" instead of silently
 // appearing un-ACK'd.
@@ -153,9 +157,10 @@ function ensureState() {
                 if (data.history) history = [...history, ...data.history].slice(0, 20);
                 if (data.currentRoom) {
                     currentRoom = data.currentRoom;
-                    // Host Control Mode: restore role/mode from persisted room.
+                    // Host Control Mode: restore role/mode/capabilities from persisted room.
                     controlMode = currentRoom.controlMode || CONTROL_MODES.EVERYONE;
                     hostPeerId = currentRoom.hostPeerId || null;
+                    serverCapabilities = Array.isArray(currentRoom.capabilities) ? currentRoom.capabilities : [];
                 }
                 if (data.hcmDesynced !== undefined) hcmDesynced = data.hcmDesynced;
                 if (data.lastActionState) lastActionState = data.lastActionState;
@@ -472,6 +477,7 @@ async function leaveRoomAfterIdleGrace(reason) {
     currentRoom = null;
     controlMode = CONTROL_MODES.EVERYONE;
     hostPeerId = null;
+    serverCapabilities = [];
     hcmDesynced = false;
     // Notify content.js/popup BEFORE currentTabId is cleared so they can reset
     // any stale guest-side HCM state (dialog/badge/desync) — H-2.
@@ -695,7 +701,7 @@ function hcmEnforceDesyncInvariant() {
 function broadcastControlMode() {
     // Notify popup (role badge / host toggle) and the active content tab
     // (so it can enable/disable the host-only guest gate).
-    const payload = { type: 'CONTROL_MODE', controlMode, hostPeerId, amHost: amHost() };
+    const payload = { type: 'CONTROL_MODE', controlMode, hostPeerId, amHost: amHost(), hostControlSupported: serverSupports(CAPABILITIES.HOST_CONTROL) };
     chrome.runtime.sendMessage(payload).catch(() => {});
     if (currentTabId) {
         const tabId = parseInt(currentTabId);
@@ -955,6 +961,7 @@ function handleServerEvent(event, data) {
             // Host Control Mode: adopt room role/mode on (re)join.
             controlMode = data.controlMode || CONTROL_MODES.EVERYONE;
             hostPeerId = data.hostPeerId || null;
+            serverCapabilities = Array.isArray(data.capabilities) ? data.capabilities : [];
             hcmEnforceDesyncInvariant();
             broadcastControlMode();
             markRoomPotentiallyIdle();
@@ -1588,6 +1595,7 @@ function leaveOldRoomIfSwitching(newRoomId) {
         currentRoom = null;
         controlMode = CONTROL_MODES.EVERYONE;
         hostPeerId = null;
+        serverCapabilities = [];
         hcmDesynced = false;
         // Notify content.js/popup so they drop any guest-side HCM state from the
         // previous room (badge/dialog/desync) — H-2/H-3.
@@ -1706,7 +1714,8 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             ping: currentPingMs,
             controlMode,
             hostPeerId,
-            amHost: amHost()
+            amHost: amHost(),
+            hostControlSupported: serverSupports(CAPABILITIES.HOST_CONTROL)
         });
     } else if (message.type === 'SET_CONTROL_MODE') {
         // Popup (host) toggles the room control mode. Server validates host authority
@@ -1727,7 +1736,7 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         // persisted desync state so a page reload re-adopts it — otherwise a fresh
         // content script would start synced while background keeps relaying us as
         // "Solo" to the host (stale-badge split-brain).
-        sendResponse({ controlMode, hostPeerId, amHost: amHost(), desynced: hcmDesynced });
+        sendResponse({ controlMode, hostPeerId, amHost: amHost(), desynced: hcmDesynced, hostControlSupported: serverSupports(CAPABILITIES.HOST_CONTROL) });
     } else if (message.type === 'REQUEST_HOST_SYNC') {
         // content.js resync: hand back the host's extrapolated current position.
         sendResponse({ target: getHostSyncTarget() });
@@ -1768,6 +1777,7 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         currentRoom = null;
         controlMode = CONTROL_MODES.EVERYONE;
         hostPeerId = null;
+        serverCapabilities = [];
         hcmDesynced = false;
         // Notify content.js/popup BEFORE currentTabId is cleared so they drop any
         // stale guest-side HCM state (dialog/badge/desync) — H-2/H-3.
diff --git a/extension/popup.js b/extension/popup.js
index 27facaf..63da0f4 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -249,7 +249,7 @@ async function init() {
             updatePingDisplay(res.ping);
             updatePeerList(res.peers);
             lastKnownPeers = res.peers || [];
-            updateHostControlUI(res.controlMode, res.amHost, res.hostPeerId, res.status === 'connected');
+            updateHostControlUI(res.controlMode, res.amHost, res.hostControlSupported, res.status === 'connected');
             if (res.lastActionState) updateLastActionUI(res.lastActionState, res.peers);
 
             // If user has a room configured but background is not connected (disconnected or idle),
@@ -313,14 +313,14 @@ function toggleUIState(inRoom) {
 // True when we're a guest in a host-only room → remote-control buttons are locked.
 let hcmGuestLocked = false;
 
-function updateHostControlUI(controlMode, amHost, hostPeerId, inRoom) {
+function updateHostControlUI(controlMode, amHost, hostControlSupported, inRoom) {
     const card = elements.hostControlCard;
     if (!card) return;
     const hostOnly = controlMode === 'host-only';
-    // The server only sends hostPeerId once it supports host control. Against an
-    // older relay it's absent → the feature is unavailable, so hide the card
+    // Explicit capability advertised by the relay in ROOM_DATA. Against an older
+    // relay it's false/absent → the feature is unavailable, so hide the card
     // entirely instead of showing a misleading "Guest".
-    const serverSupportsHostControl = !!hostPeerId;
+    const serverSupportsHostControl = !!hostControlSupported;
     // Only show the card when it's actually meaningful:
     //   - host: always (so they can enable/disable host-only)
     //   - guest: only while host-only is active (explains why they can't control)
@@ -1745,7 +1745,7 @@ chrome.runtime.onMessage.addListener((msg) => {
         if (msg.peers) detectPeerChanges(msg.peers);
     } else if (msg.type === 'CONTROL_MODE') {
         const inRoom = elements.sectionActive && elements.sectionActive.style.display === 'block';
-        updateHostControlUI(msg.controlMode, msg.amHost, msg.hostPeerId, inRoom);
+        updateHostControlUI(msg.controlMode, msg.amHost, msg.hostControlSupported, inRoom);
     } else if (msg.type === 'CONNECTION_STATUS') {
         if (msg.status === 'connected' || msg.status === 'disconnected') {
             if (joinBtnTimeout) { clearTimeout(joinBtnTimeout); joinBtnTimeout = null; }
@@ -1763,7 +1763,7 @@ chrome.runtime.onMessage.addListener((msg) => {
                 if (res.peers) updatePeerList(res.peers);
                 if (res.lastActionState) updateLastActionUI(res.lastActionState, res.peers);
                 updatePingDisplay(res.ping);
-                updateHostControlUI(res.controlMode, res.amHost, res.hostPeerId, true);
+                updateHostControlUI(res.controlMode, res.amHost, res.hostControlSupported, true);
             });
         }
         if (msg.status === 'disconnected') {
diff --git a/scripts/test-server-ws.mjs b/scripts/test-server-ws.mjs
index 1e87365..6f0fd4a 100644
--- a/scripts/test-server-ws.mjs
+++ b/scripts/test-server-ws.mjs
@@ -63,6 +63,16 @@ try {
     close();
     resetConnectionRate();
 
+    // --- Capabilities: ROOM_DATA advertises server features for client detection ---
+    const capClient = await c();
+    s(capClient, 'join_room', { roomId: 'cap-'+Date.now(), peerId: 'capp', protocolVersion: '1.0.0' });
+    const [capEv, capData] = await a(capClient);
+    assert.equal(capEv, 'room_data');
+    assert.ok(Array.isArray(capData.capabilities) && capData.capabilities.includes('host-control'),
+        'ROOM_DATA advertises the host-control capability');
+    close();
+    resetConnectionRate();
+
     // --- Host Control Mode ---
     const hrid = 'host-'+Date.now();
     const h1 = await c(), h2 = await c();          // h1 = host (first joiner), h2 = guest
diff --git a/server/index.js b/server/index.js
index 548c74c..678f6af 100644
--- a/server/index.js
+++ b/server/index.js
@@ -4,7 +4,7 @@ import { fileURLToPath } from 'url';
 import { Server } from 'socket.io';
 import crypto from 'crypto';
 import dotenv from 'dotenv';
-import { EVENTS, OFFICIAL_SERVER_TOKEN, PROTOCOL_VERSION, CONTROL_MODES } from '../shared/constants.js';
+import { EVENTS, OFFICIAL_SERVER_TOKEN, PROTOCOL_VERSION, CONTROL_MODES, CAPABILITIES } from '../shared/constants.js';
 import {
     buildHealthPayload,
     checkCooldown,
@@ -161,6 +161,11 @@ const HOST_ONLY_GATED_EVENTS = new Set([
     EVENTS.EPISODE_LOBBY_CANCEL
 ]);
 
+// Features this relay supports, advertised to clients in ROOM_DATA so they can
+// enable matching UI/behavior only when the server actually backs it. Append a
+// flag here when a new server-gated feature ships (e.g. co-host promotion).
+const SERVER_CAPABILITIES = [CAPABILITIES.HOST_CONTROL];
+
 // M-4: minimum interval between CONTROL_MODE changes per room. Stops a rapidly
 // toggling host from thrashing every guest's UI (locked/unlocked/locked...) and
 // from generating one broadcast per toggle across all peers.
@@ -454,7 +459,8 @@ io.on('connection', (socket) => {
                 peers: Array.from(room.peers).map(sid => room.peerData.get(sid)),
                 activeLobby: room.activeLobby || null,
                 hostPeerId: room.hostPeerId || null,
-                controlMode: room.controlMode || CONTROL_MODES.EVERYONE
+                controlMode: room.controlMode || CONTROL_MODES.EVERYONE,
+                capabilities: SERVER_CAPABILITIES
             });
             log('ROOM', `Peer ${peerId} joined: ${roomId.substring(0, 3)}***`);
             } finally {
diff --git a/shared/constants.js b/shared/constants.js
index f6016cc..2281098 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -69,6 +69,16 @@ export const CONTROL_MODES = {
     HOST_ONLY: 'host-only'  // only the host drives the room
 };
 
+// Server feature capabilities, advertised to clients in ROOM_DATA. Lets a client
+// detect what the relay actually supports instead of inferring it from the
+// presence of a data field — so new server features degrade cleanly on older
+// relays (unknown/absent list → feature treated as unavailable) and old clients
+// simply ignore the field. Add a flag here as each server-gated feature lands.
+export const CAPABILITIES = {
+    HOST_CONTROL: 'host-control'
+    // Future: CO_HOST: 'co-host'  // owner promotes guests to additional controllers
+};
+
 export const HEARTBEAT_INTERVAL = 15000; // 15s
 export const FORCE_SYNC_TIMEOUT = 8500; // 8.5s timeout for force sync ACKs (must be > content.js poll timeout of 8s)
 export const EPISODE_LOBBY_TIMEOUT = 60000; // 60s timeout for episode lobby

From b32e2fa8cc7122259e87149bfc8df0076b6926bf Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sat, 27 Jun 2026 06:18:22 +0200
Subject: [PATCH 057/151] feat(host-control-mode): buffer-aware deferred
 snap-back (#3)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Implements the snap-back robustly instead of deferring it to device testing —
since the set of video sites is unbounded, "measure which players misbehave, then
fix" doesn't scale; the snap-back must be safe on any player.

On an involuntary pause/seek, if the player isn't ready to play (readyState<3 or
seeking) we no longer snap immediately (which fights the buffer: seek → re-buffer
→ pause → … = stutter). Instead hcmDeferredSnapBack polls until the player can
play (8s cap) and then snaps ONCE to the host's re-queried current position. A
player can't play while buffering anyway, so waiting is also more correct, not
just safer. Ready players still snap immediately (no regression).

Guards: aborts if the user goes solo or is no longer a gated guest; single
pending poll (no stacking); cleared in hcmReset.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 docs/host-control-mode-EDGECASES.md | 17 ++++++------
 extension/content.js                | 40 +++++++++++++++++++++++++++--
 2 files changed, 46 insertions(+), 11 deletions(-)

diff --git a/docs/host-control-mode-EDGECASES.md b/docs/host-control-mode-EDGECASES.md
index 1233015..a6dfe8f 100644
--- a/docs/host-control-mode-EDGECASES.md
+++ b/docs/host-control-mode-EDGECASES.md
@@ -47,15 +47,14 @@ to `CAPABILITIES` / `SERVER_CAPABILITIES` as features land.
   live-DVR (finite, sliding duration). Added a `seekable.start(0) > 1` sliding-window
   heuristic in `hcmIsLive()`. (content.js)
 
-### Pre-test self-audit (open, watch during device testing)
-- **EC-4/EC-1 snap-back thrash:** for *involuntary* events we still actively seek+play,
-  which can fight a buffering player for the duration of the stall. NOTE: "just let
-  catch-up re-sync" is NOT a valid fix — sync is event-driven, there is no continuous
-  catch-up loop, so skipping the snap-back risks leaving the guest stuck paused/behind
-  until the host next acts. Correct fix is a **buffer-aware deferred snap-back**: when
-  involuntary + buffering, wait for readyState>=3 (à la pollSeekReady) then seek+play
-  once — avoids thrash AND guarantees re-sync. Build after device testing reveals which
-  players fire pause() vs only 'waiting'.
+### Pre-test self-audit
+- ~~**EC-4/EC-1 snap-back thrash:**~~ FIXED — implemented the **buffer-aware deferred
+  snap-back** (`hcmDeferredSnapBack`): on an involuntary event, if the player isn't
+  ready (`readyState<3` or seeking) we wait (poll, 8s cap) until it can play, then snap
+  ONCE to the host's re-queried position instead of repeatedly fighting the buffer.
+  Done defensively/player-agnostically — we can't enumerate every site, so this is safe
+  whether a player fires `pause()` or only `waiting`. Aborts if the user goes solo or is
+  no longer a gated guest; single pending poll (no stacking).
 - ~~**Control-mode race at join:**~~ FIXED — `hcmHandleBlocked` now treats `HOST_BLOCKED`
   as authoritative (adopts host-only/guest role) instead of re-checking local mode,
   since background only sends it to gated guests.
diff --git a/extension/content.js b/extension/content.js
index 2351333..78a8b9d 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -112,6 +112,7 @@
     let hcmHostPeerId = null;          // last known host peerId (room/host identity)
     let hcmDesynced = false;           // user chose to go solo
     let hcmSnapBackCooldownUntil = 0;  // suppress re-trigger right after a snap-back
+    let hcmDeferredSnapPending = false; // a buffer-aware snap-back is waiting for readiness
     let hcmLastUserGestureAt = 0;      // for deliberate-vs-involuntary classification
     let hcmBufferingUntil = 0;         // set on 'waiting' — buffering grace window
     let hcmDialogTimer = null;         // 8s auto-stay timer — cleared on dialog replace (H-4)
@@ -128,6 +129,7 @@
     const HCM_USER_GESTURE_MS = 1000;
     const HCM_BUFFERING_GRACE_MS = 1500;
     const HCM_SNAP_BACK_COOLDOWN_MS = 1000;
+    const HCM_BUFFER_WAIT_MS = 8000;   // cap on waiting for a buffering player before snapping anyway
 
     // Track genuine user input so we can tell a deliberate pause/seek from a
     // player-/browser-initiated one. Capturing + passive so we never interfere.
@@ -210,6 +212,34 @@
         tryOnce();
     }
 
+    // Buffer-aware snap-back (#3). An involuntary pause/seek often coincides with the
+    // player buffering — and a player can't actually play while it's stalled. Snapping
+    // immediately just fights the buffer (seek → re-buffer → another pause → …), which
+    // looks like stutter. Instead: if the player isn't ready, wait until it can play
+    // (readyState>=3, not seeking), then snap ONCE to the host's *current* position
+    // (re-queried, since the captured target may be stale by the time buffering ends).
+    // Player-agnostic on purpose — we can't enumerate every site, so this must be safe
+    // regardless of whether a given player fires 'pause' or only 'waiting'.
+    function hcmDeferredSnapBack() {
+        if (hcmDeferredSnapPending) return; // already waiting — don't stack polls
+        hcmDeferredSnapPending = true;
+        const deadline = Date.now() + HCM_BUFFER_WAIT_MS;
+        const poll = () => {
+            // Abort if the reason to snap is gone: user went solo, we're no longer a
+            // gated guest, or the video vanished.
+            if (hcmDesynced || !hcmIsGuestGated()) { hcmDeferredSnapPending = false; return; }
+            const video = findVideo();
+            const ready = video && video.readyState >= 3 && !video.seeking;
+            if (ready || Date.now() >= deadline) {
+                hcmDeferredSnapPending = false;
+                hcmRequestHostSyncWithRetry(); // fresh host position + snap once
+                return;
+            }
+            setTimeout(poll, 300);
+        };
+        poll();
+    }
+
     // Entry point: background told us our local action was blocked in host-only.
     function hcmHandleBlocked(action, target) {
         // HOST_BLOCKED is only ever sent to a gated guest (background verifies
@@ -227,9 +257,14 @@
             // cooldown — the deliberate dialog path below must still go through,
             // otherwise a second deliberate pause inside the cooldown window leaves
             // the user stuck paused with no UI (M-3).
-            if (Date.now() < hcmSnapBackCooldownUntil) return;
+            if (Date.now() < hcmSnapBackCooldownUntil || hcmDeferredSnapPending) return;
             // Buffering/ads/throttle — silently re-sync, no dialog spam.
-            hcmSnapBackToHost(target);
+            const video = findVideo();
+            if (video && video.readyState >= 3 && !video.seeking) {
+                hcmSnapBackToHost(target);        // ready now → snap immediately
+            } else {
+                hcmDeferredSnapBack();             // buffering → wait for ready, then snap once (#3)
+            }
             return;
         }
         // Deliberate: offer the choice (Teleparty-style), default = snap back.
@@ -349,6 +384,7 @@
     function hcmReset() {
         const wasDesynced = hcmDesynced;
         hcmDesynced = false;
+        hcmDeferredSnapPending = false;
         hcmRemoveDialog();
         hcmRemoveBadge();
         // If we were desynced, notify background so it stops reporting us as

From 02c41776b8346f913a2fa4c88586e0eff25f8d8f Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sat, 27 Jun 2026 06:21:27 +0200
Subject: [PATCH 058/151] fix(host-control-mode): re-query host pos when
 captured target is unusable
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Audit follow-up on the snap-back paths. The immediate involuntary snap used the
captured target directly; if it was null/invalid (host position not known yet,
e.g. before the first host heartbeat) hcmSnapBackToHost no-ops and the guest is
left silently paused with no dialog and no retry. The deferred and "Stay in sync"
paths already re-query with retry — make the immediate path fall back to the same
when the captured target isn't usable.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/content.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/extension/content.js b/extension/content.js
index 78a8b9d..733233b 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -261,7 +261,12 @@
             // Buffering/ads/throttle — silently re-sync, no dialog spam.
             const video = findVideo();
             if (video && video.readyState >= 3 && !video.seeking) {
-                hcmSnapBackToHost(target);        // ready now → snap immediately
+                // Ready now → snap immediately. Use the captured target if it's
+                // usable, otherwise re-query+retry (host state may not be known yet)
+                // so we never leave the guest silently stuck (consistent with the
+                // deferred and "Stay in sync" paths).
+                if (target && Number.isFinite(target.targetTime)) hcmSnapBackToHost(target);
+                else hcmRequestHostSyncWithRetry();
             } else {
                 hcmDeferredSnapBack();             // buffering → wait for ready, then snap once (#3)
             }

From dfa0a3d03efcd307814c2f29bce433202c1d4a28 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 02:25:11 +0200
Subject: [PATCH 059/151] =?UTF-8?q?fix(host-control-mode):=20audit=20findi?=
 =?UTF-8?q?ngs=20=E2=80=94=20host=20dedup=20demotion,=20episode-lobby=20fr?=
 =?UTF-8?q?eeze,=20+cleanups?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Findings recovered from the multi-agent audit (verification phase was cut off by a
usage limit; verified inline against the code):

HIGH:
- Host was demoted on peerId dedup (fast reconnect / second tab): the dedup path
  removes the old socket and the kicked socket's 'disconnect' both ran the
  host-leave fallback before the same peerId re-joined → room silently unlocked on
  every host network blip. Now skip the fallback while a join for that peerId is in
  flight (peerJoinLocks). Regression test added. (A long real disconnect still
  falls back — that's the deferred host-grace EC-10.)
- Episode auto-advance froze a gated guest: in host-only the guest's EPISODE_LOBBY
  is dropped server-side, but the guest still self-paused (PAUSE_FOR_LOBBY) waiting
  for readies that never came → 60s freeze. A host-only guest now skips creating a
  lobby (the host drives episode sync).

LOW / cleanup:
- GET_HCM_STRINGS could return a raw key name ("HCM_DIALOG_TITLE") if the locale
  dictionary failed to load (getMessage returns the key on miss) → omit it so
  content keeps its English fallback.
- hcmReset now also clears the snap-back cooldown + buffering grace, so a stale
  cooldown can't swallow the first snap-back after a room/host change.
- Popup play/pause labels reset on lock too (not just unlock), so a button can't
  freeze on "Playing…" when host-only activates mid-click.
- Fix a stale comment (heartbeat now carries 'desynced').

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/background.js    | 33 ++++++++++++++++++++++++---------
 extension/content.js       |  2 ++
 extension/popup.js         | 16 +++++++---------
 scripts/test-server-ws.mjs | 19 +++++++++++++++++++
 server/index.js            |  8 +++++++-
 5 files changed, 59 insertions(+), 19 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index d9fa4fa..1494877 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1236,9 +1236,10 @@ function handleServerEvent(event, data) {
                             peer.mediaTitle = data.mediaTitle !== undefined ? data.mediaTitle : peer.mediaTitle;
                             peer.volume = data.volume !== undefined ? data.volume : peer.volume;
                             peer.muted = data.muted !== undefined ? data.muted : peer.muted;
-                            // Only update when present — the background-driven keepAlive
-                            // heartbeat omits 'desynced', and clobbering it to false there
-                            // would make the host's "Solo" badge flicker between heartbeats.
+                            // Only update when present. Our own heartbeats now carry
+                            // 'desynced', but other PEER_STATUS variants (server join
+                            // broadcast, future/old clients) omit it — and clobbering it
+                            // to false there would flicker the host's "Solo" badge.
                             if (data.desynced !== undefined) peer.desynced = data.desynced === true;
 
                             const timeSinceReactive = peer.lastReactiveUpdate ? (Date.now() - peer.lastReactiveUpdate) : Infinity;
@@ -1746,13 +1747,17 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         const settings = await chrome.storage.local.get(['locale']);
         const lang = settings.locale || getSystemLanguage();
         await loadLocale(lang);
+        // getMessage returns the key name itself if the dictionary failed to load.
+        // Return undefined in that case so content keeps its English fallback rather
+        // than rendering a raw key like "HCM_DIALOG_TITLE".
+        const m = (k) => { const v = getMessage(k); return v === k ? undefined : v; };
         sendResponse({
-            title:  getMessage('HCM_DIALOG_TITLE'),
-            body:   getMessage('HCM_DIALOG_BODY'),
-            stay:   getMessage('HCM_DIALOG_STAY'),
-            solo:   getMessage('HCM_DIALOG_SOLO'),
-            badge:  getMessage('HCM_BADGE_SOLO'),
-            resync: getMessage('HCM_BADGE_RESYNC')
+            title:  m('HCM_DIALOG_TITLE'),
+            body:   m('HCM_DIALOG_BODY'),
+            stay:   m('HCM_DIALOG_STAY'),
+            solo:   m('HCM_DIALOG_SOLO'),
+            badge:  m('HCM_BADGE_SOLO'),
+            resync: m('HCM_BADGE_RESYNC')
         });
     } else if (message.type === 'HCM_DESYNC_STATE') {
         // content.js tells us whether the local user chose to watch on their own.
@@ -2139,6 +2144,16 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             return;
         }
 
+        // Host Control Mode: a gated guest must NOT initiate an episode lobby — the
+        // server drops the guest's EPISODE_LOBBY, so the lobby would never complete
+        // and the guest would self-pause (PAUSE_FOR_LOBBY) into a 60s freeze. In
+        // host-only the host drives episode sync; the guest just follows / snaps back.
+        if (controlMode === CONTROL_MODES.HOST_ONLY && !amHost()) {
+            addLog(`Episode change ("${newTitle}") — host-only guest, not creating a lobby (host drives).`, 'info');
+            sendResponse({ status: 'host_only_guest_skip' });
+            return;
+        }
+
         // Variant A: alone in the room → no one to wait for. Skip the lobby
         // entirely so the next episode just plays through (no pause, no traffic).
         // Live peer check, so the moment someone joins the next transition syncs.
diff --git a/extension/content.js b/extension/content.js
index 733233b..1353950 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -390,6 +390,8 @@
         const wasDesynced = hcmDesynced;
         hcmDesynced = false;
         hcmDeferredSnapPending = false;
+        hcmSnapBackCooldownUntil = 0; // don't let a stale cooldown swallow the next snap-back
+        hcmBufferingUntil = 0;
         hcmRemoveDialog();
         hcmRemoveBadge();
         // If we were desynced, notify background so it stops reporting us as
diff --git a/extension/popup.js b/extension/popup.js
index 63da0f4..5c29a92 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -355,15 +355,13 @@ function setRemoteControlsLocked(locked) {
         btn.style.cursor = locked ? 'not-allowed' : '';
         btn.title = locked ? (getMessage('NOTICE_HOST_CONTROLS') || 'The host controls playback for everyone.') : '';
     });
-    // When unlocking, also restore the default labels. The action handlers leave
-    // the text in a transitional state ("Playing..." / "Pausing...") and the 2.5s
-    // safety reset skips the refresh while we were guest-locked, so without this
-    // the button can be re-enabled with stale text after the host disables
-    // host-only (L-1).
-    if (!locked) {
-        if (elements.playBtn) elements.playBtn.textContent = getMessage('BTN_PLAY') || 'Play';
-        if (elements.pauseBtn) elements.pauseBtn.textContent = getMessage('BTN_PAUSE') || 'Pause';
-    }
+    // Always restore the default labels. The action handlers leave the text in a
+    // transitional state ("Playing..." / "Pausing...") and the 2.5s safety reset
+    // skips the refresh while guest-locked — so reset on BOTH transitions: on lock
+    // (host enabled host-only just as the guest clicked → don't freeze "Playing...")
+    // and on unlock (L-1).
+    if (elements.playBtn) elements.playBtn.textContent = getMessage('BTN_PLAY') || 'Play';
+    if (elements.pauseBtn) elements.pauseBtn.textContent = getMessage('BTN_PAUSE') || 'Pause';
 }
 
 if (elements.hostControlToggle) {
diff --git a/scripts/test-server-ws.mjs b/scripts/test-server-ws.mjs
index 6f0fd4a..cdf4377 100644
--- a/scripts/test-server-ws.mjs
+++ b/scripts/test-server-ws.mjs
@@ -151,6 +151,25 @@ try {
     assert.ok(dSenderResync && dSenderResync.controlMode==='host-only',
         'debounced toggle re-syncs sender to actual state');
     close();
+    resetConnectionRate();
+
+    // --- Host role survives peerId dedup (reconnect / second tab) ---
+    const hdrid = 'dedup-host-'+Date.now();
+    const hd1 = await c(), hd2 = await c();
+    await j(hd1, hdrid, 'dhost'); await j(hd2, hdrid, 'dguest'); hd1._m.length = hd2._m.length = 0;
+    s(hd1,'set_control_mode',{controlMode:'host-only'});
+    await w(hd1,'control_mode'); await w(hd2,'control_mode');
+    hd1._m.length = hd2._m.length = 0;
+    // The host's peerId re-joins on a fresh socket → server dedupes the old socket.
+    // This must NOT demote the host or reset the mode (a network blip / second tab).
+    const hd3 = await c();
+    s(hd3,'join_room',{roomId:hdrid,peerId:'dhost',protocolVersion:'1.0.0'});
+    const hdrd = await a(hd3);
+    assert.equal(hdrd[0],'room_data');
+    assert.ok(hdrd[1].controlMode === 'host-only' && hdrd[1].hostPeerId === 'dhost',
+        'host role + host-only mode survive peerId dedup (reconnect/second tab)');
+    close();
+    resetConnectionRate();
 
     // --- Password room ---
     const prid = 'pw-'+Date.now();
diff --git a/server/index.js b/server/index.js
index 678f6af..419b9e1 100644
--- a/server/index.js
+++ b/server/index.js
@@ -228,7 +228,13 @@ function removePeerFromRoom(socketId, roomId, reason) {
     //      socket), fall back to 'everyone' so the room never gets stuck locked, and
     //      reassign host to the earliest remaining peer so the feature stays usable.
     //      (v1: immediate fallback, no grace period — see host-control-mode docs.)
-    if (!isPeerStillConnected && room.hostPeerId === peerId && room.peers.size > 0) {
+    //      Skip while a join for this peerId is in flight (peerJoinLocks holds it):
+    //      that's a reconnect / second tab where the same peerId is being re-added
+    //      right after — covers both the explicit 'dedupe' removal AND the
+    //      'disconnect' the kicked old socket fires. Demoting there would silently
+    //      unlock the room on every host network blip.
+    const peerRejoining = peerJoinLocks.has(peerId);
+    if (!peerRejoining && !isPeerStillConnected && room.hostPeerId === peerId && room.peers.size > 0) {
         const nextPeerData = room.peerData.values().next().value;
         room.hostPeerId = nextPeerData ? nextPeerData.peerId : null;
         room.controlMode = CONTROL_MODES.EVERYONE;

From 9626948f29dd97ba4a4d57da838dc08f01444efa Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 02:37:37 +0200
Subject: [PATCH 060/151] security(server): warn at startup when SERVER_SALT is
 unset
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Room-password hashing falls back to a built-in salt that is public in the repo
when SERVER_SALT is not configured. Low risk (the hash never leaves the server),
but operators should set a unique salt — warn at startup, mirroring the existing
ADMIN_METRICS_TOKEN warning.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 server/index.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/server/index.js b/server/index.js
index 419b9e1..8641d62 100644
--- a/server/index.js
+++ b/server/index.js
@@ -64,6 +64,10 @@ if (!isAdminMetricsTokenStrong(ADMIN_METRICS_TOKEN)) {
     console.warn('[SECURITY] ADMIN_METRICS_TOKEN is set but shorter than 32 characters. Use a long random token.');
 }
 
+if (!process.env.SERVER_SALT) {
+    console.warn('[SECURITY] SERVER_SALT is not set — using the built-in default salt (public in the repo). Set a unique SERVER_SALT so room-password hashes are not computed with a known salt.');
+}
+
 export const app = express();
 app.set('trust proxy', 1); // For real client IP through reverse proxy
 

From ce3cf0ef890998a4bb2d47c8d359bfaa5f550f8c Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 02:53:11 +0200
Subject: [PATCH 061/151] docs: add KNOWN_LIMITATIONS.md with threat model +
 NOFIX entries

Records the accepted, out-of-threat-model decisions that reviewers/agents keep
re-reporting as bugs: unauthenticated peerId (host impersonation), non-constant-
time room-password compare, public server token, enumerable room IDs, and
pause-revert-not-prevent. Spells out the threat model (ephemeral, account-less
rooms of invited participants watching a video) so the "NOFIX" rationale is clear,
and distinguishes these from genuinely-deferred items (EC-10 host grace, classifier
tuning). Cross-referenced from SECURITY.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 KNOWN_LIMITATIONS.md | 103 +++++++++++++++++++++++++++++++++++++++++++
 SECURITY.md          |   6 +++
 2 files changed, 109 insertions(+)
 create mode 100644 KNOWN_LIMITATIONS.md

diff --git a/KNOWN_LIMITATIONS.md b/KNOWN_LIMITATIONS.md
new file mode 100644
index 0000000..71695a6
--- /dev/null
+++ b/KNOWN_LIMITATIONS.md
@@ -0,0 +1,103 @@
+# Known Limitations & Accepted Non-Issues (NOFIX)
+
+This file records design decisions that are **intentional** and **out of scope** for
+KoalaSync's threat model. They are frequently re-discovered by reviewers, linters, and
+AI agents and re-reported as "bugs" or "vulnerabilities." They are not. Please read the
+threat model below before flagging any of them.
+
+> **For reviewers & agents:** Do **not** re-report the NOFIX items below. They are
+> deliberate. If you think the *threat model itself* should change (e.g. KoalaSync
+> starts handling accounts, payments, or sensitive data), raise **that** discussion
+> first — these items only stand because the threat model holds.
+
+---
+
+## Threat model
+
+KoalaSync is a **privacy-preserving watch-party sync tool**, not a security product.
+
+- **Rooms are ephemeral.** They exist for a few hours and are auto-reaped. There are no
+  accounts, no persistent storage, no money, and no sensitive content on the relay.
+- **The relay is a dumb, stateless message bus.** It forwards play/pause/seek between
+  peers who *chose* to watch together and joined via an invite link shared out-of-band.
+- **Participants are invited.** Anyone in a room was let in. The social contract is
+  "we're watching a video together," not "mutually distrusting parties."
+
+### What we DO defend against
+- **Accidental disruption** — the entire point of Host Control Mode.
+- **Spam / DoS** that degrades the relay for everyone — rate limits, 4 KB payload cap,
+  server-side gating, lazy-cached health responses.
+- **Resource exhaustion / memory leaks** — bounded maps, periodic cleanup, room/peer reaping.
+- **Crashes from malformed input** — strict sanitization and clamping of every field.
+- **Genuine boundary breaches** — admin-metrics auth (constant-time), CORS, WSS upgrade,
+  invite-hash isolation, strict CSP. Reports here are very welcome (see `SECURITY.md`).
+
+### What we explicitly DO NOT defend against
+A **determined participant who modifies their own client to misbehave inside a room they
+were invited to.** The worst they achieve is sending playback commands or seizing the
+"host" role in a temporary room they could already disrupt by other means. That is a
+**social** problem, solved socially: kick them, or start a new room. Engineering real
+identity/auth to prevent it would destroy the account-less, frictionless, privacy-first
+design — a bad trade for an ad-hoc movie night.
+
+---
+
+## NOFIX entries
+
+### NOFIX-1 — `peerId` is unauthenticated; a crafted client can impersonate or seize the host
+**Flag:** `peerId` is client-asserted and broadcast to every peer (in `ROOM_DATA` /
+`PEER_STATUS`). A modified client can join with the host's `peerId`, dedupe-kick the real
+host, and become host — controlling or locking `host-only` mode.
+
+**Why NOFIX:** Requires a *modified client* + an *invited* participant + a `peerId` that is
+only meaningful inside that one *temporary* room. The payoff is sending play/pause or
+locking a room the attacker is already in — pure trolling, instantly reversible (kick /
+new room). Cryptographic per-user identity is wildly disproportionate for an ad-hoc,
+account-less, ephemeral watch party. **Out of threat model.**
+Do **not** "fix" with accounts, signed peerIds, or per-user tokens — that breaks the
+core design.
+
+### NOFIX-2 — Room-password comparison is not constant-time
+**Flag:** room password hashes are compared with `!==` (`server/index.js`), so the compare
+is theoretically timing-attackable.
+
+**Why NOFIX:** The compared value is an **HMAC-SHA256 hash that never leaves the server** —
+an attacker cannot observe it to mount a timing attack. Even a hypothetical success only
+lets someone join a *temporary* room to send playback commands. Not worth defending.
+(The admin-metrics bearer token — a real boundary — **does** use `crypto.timingSafeEqual`.
+That is the line we actually guard.)
+
+### NOFIX-3 — `OFFICIAL_SERVER_TOKEN` is public in the repo
+**Flag:** the connection token in `shared/constants.js` is committed, so anyone can connect.
+
+**Why NOFIX:** It is a **coarse filter** to keep random scanners off the relay, **not
+authentication**. The relay is a public message bus by design; rate limits and per-room
+behavior are the real protections.
+
+### NOFIX-4 — Room IDs are enumerable via `GET_ROOMS`
+**Flag:** any connected client can list all room IDs (and whether each has a password).
+
+**Why NOFIX:** This is the intended **"Public Rooms"** feature. Rooms wanting privacy set a
+password; listing the IDs of password-less rooms only lets someone join a watch party —
+the same as being handed the invite link.
+
+### NOFIX-5 — A pause/seek can only be reverted, not prevented
+**Flag:** in `host-only` mode a guest's pause still fires locally before the extension can
+react, so there is a brief flicker before snap-back.
+
+**Why NOFIX:** A content script cannot intercept a `<video>` event before the element
+acts. Reacting (snap-back) is the only option and is by design; the ~½s flicker is
+acceptable. Not a bug.
+
+---
+
+## Not NOFIX — just deferred (may be revisited)
+
+These are *not* accepted-forever; they are scoped out of v1 and tracked separately
+(see the host-control-mode design docs in `docs/`):
+
+- **Host grace on a long disconnect (EC-10).** A brief reconnect/second-tab keeps the host
+  (handled), but a long real disconnect still falls back to `everyone`. A ~30s host-reserve
+  grace could be added later.
+- **Intent-classifier / snap-back tuning.** Thresholds are first-pass; real-device testing
+  may adjust them.
diff --git a/SECURITY.md b/SECURITY.md
index 4db6145..b7c3ffd 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -82,6 +82,12 @@ KoalaSync's security is grounded in its architecture:
 
 If you find a way to bypass any of these protections, we want to know about it.
 
+> [!NOTE]
+> Some frequently-reported "issues" are **intentional and out of scope** for our
+> threat model (ephemeral, account-less rooms of invited participants) — e.g. an
+> unauthenticated `peerId` or non-constant-time room-password compare. Before
+> reporting, please read **[`KNOWN_LIMITATIONS.md`](KNOWN_LIMITATIONS.md)**.
+
 ---
 
 ## Responsible Disclosure

From de518ac205364a30631e7b0d2e4be51dd7d001cc Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 03:16:28 +0200
Subject: [PATCH 062/151] docs+test: move KNOWN_LIMITATIONS to docs/, add
 everyone-mode regression test, co-host plan
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Move KNOWN_LIMITATIONS.md → docs/KNOWN_LIMITATIONS.md (+ fix SECURITY.md link).
- WS test: in default 'everyone' mode a non-host guest can still drive
  play/pause/seek/force-sync/episode-lobby — proves host-control OFF == unchanged
  behavior.
- docs/host-control-mode-COHOST-PLAN.md: plan for multi-controller (owner grants
  drive rights to several co-hosts), built on the capabilities hook; covers the
  gate generalization, roles, backwards-compat, edge cases, and a separate
  large-room (510-peer) scaling track.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 SECURITY.md                                   |   2 +-
 .../KNOWN_LIMITATIONS.md                      |   0
 docs/host-control-mode-COHOST-PLAN.md         | 118 ++++++++++++++++++
 scripts/test-server-ws.mjs                    |  15 +++
 4 files changed, 134 insertions(+), 1 deletion(-)
 rename KNOWN_LIMITATIONS.md => docs/KNOWN_LIMITATIONS.md (100%)
 create mode 100644 docs/host-control-mode-COHOST-PLAN.md

diff --git a/SECURITY.md b/SECURITY.md
index b7c3ffd..2f0ef79 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -86,7 +86,7 @@ If you find a way to bypass any of these protections, we want to know about it.
 > Some frequently-reported "issues" are **intentional and out of scope** for our
 > threat model (ephemeral, account-less rooms of invited participants) — e.g. an
 > unauthenticated `peerId` or non-constant-time room-password compare. Before
-> reporting, please read **[`KNOWN_LIMITATIONS.md`](KNOWN_LIMITATIONS.md)**.
+> reporting, please read **[`docs/KNOWN_LIMITATIONS.md`](docs/KNOWN_LIMITATIONS.md)**.
 
 ---
 
diff --git a/KNOWN_LIMITATIONS.md b/docs/KNOWN_LIMITATIONS.md
similarity index 100%
rename from KNOWN_LIMITATIONS.md
rename to docs/KNOWN_LIMITATIONS.md
diff --git a/docs/host-control-mode-COHOST-PLAN.md b/docs/host-control-mode-COHOST-PLAN.md
new file mode 100644
index 0000000..854b9dc
--- /dev/null
+++ b/docs/host-control-mode-COHOST-PLAN.md
@@ -0,0 +1,118 @@
+# Co-Host (Multi-Controller) — Implementation Plan
+
+Branch base: `feature/host-control-mode` (builds directly on it).
+Goal: let the room owner grant **playback control to several peers** (co-hosts), not
+just one — e.g. 4 of N people in a room may drive play/pause/seek, the rest are guests.
+
+This is the second server-gated feature the `capabilities` hook was designed for
+(`CAPABILITIES.CO_HOST = 'co-host'`, already stubbed in `shared/constants.js`).
+
+---
+
+## 1. Roles
+
+| Role | Can drive (play/pause/seek/force-sync/episode-lobby) | Can promote/demote + toggle mode |
+|------|------|------|
+| **Owner** (room creator, = today's "host") | yes (always a controller) | **yes** |
+| **Controller** (co-host) | yes (in `host-only` mode) | no |
+| **Guest** | only in `everyone` mode | no |
+
+The single-host feature is just the special case `controllers = { owner }`.
+
+## 2. Data model
+
+### Server (`room` object)
+- `ownerPeerId` — the creator / manager. Keep `hostPeerId` as an **alias** (= ownerPeerId)
+  so older clients keep working.
+- `controllers: Set<peerId>` — peers allowed to drive. **Always contains ownerPeerId.**
+- `controlMode: 'everyone' | 'host-only'` — unchanged wire values (`'host-only'` now means
+  "restricted to controllers", not "single host").
+- `MAX_CONTROLLERS` cap (e.g. 10) to bound the set + payload.
+
+### Shared constants
+- `CAPABILITIES.CO_HOST = 'co-host'` (un-stub it) → add to `SERVER_CAPABILITIES`.
+- New events:
+  - `SET_PEER_ROLE` (client→server): `{ peerId, controller: boolean }` — owner promotes/demotes.
+  - Extend `CONTROL_MODE` (server→client) payload: `{ controlMode, ownerPeerId, hostPeerId, controllers: [peerId...] }`.
+- `ROOM_DATA` gains `ownerPeerId` + `controllers`.
+
+## 3. Gate generalization (the core change)
+
+Today the gate compares against a single `hostPeerId`. Generalize to set membership:
+
+- **Server relay gate** (`server/index.js`): `controlMode === 'host-only' && !room.controllers.has(mapping.peerId)` → drop. (Was `mapping.peerId !== room.hostPeerId`.)
+- **Background gates** (sender + receiver): replace `amHost()` / `senderId !== hostPeerId`
+  with controller-set membership: `controllers.includes(myPeerId)` / `senderId ∈ controllers`.
+- **Helpers:** split `amHost()` into `amOwner()` (manage rights) and `amController()`
+  (drive rights). The desync/snap-back path keys on `!amController()` instead of `!amHost()`.
+
+`SET_PEER_ROLE` handler (server): validate sender is owner, target is a current peer in the
+room, enforce `MAX_CONTROLLERS`, always keep owner in the set, then broadcast `CONTROL_MODE`
+with the new `controllers`.
+
+## 4. Client + UI
+
+- **Owner** sees the peer list with a per-peer **"Controller" toggle** (promote/demote) plus
+  the existing mode toggle.
+- **Controllers** see a "Controller" badge and are NOT locked out of the remote-control buttons.
+- **Guests** see "Guest" + the host-only notice (unchanged).
+- The promote UI + co-host badges render only when the relay advertises the `co-host`
+  capability (feature detection, same pattern as `hostControlSupported`).
+- i18n: new keys (`ROLE_CONTROLLER`, `BTN_PROMOTE`, `BTN_DEMOTE`, …) across all locales.
+
+## 5. Backwards compatibility
+
+- **New client + old server** (host-control only, no `co-host` capability): no co-host UI;
+  behaves as today's single-host. ✓
+- **Old client + new server**: ignores `controllers` / `SET_PEER_ROLE`. An old client that
+  the owner promotes still **gates itself** (its sender-gate only knows `!amHost`), so it
+  can't drive — it degrades to a guest. Co-host requires a client that understands
+  `controllers`. Document this; not a crash. ✓
+- No `PROTOCOL_VERSION` bump needed — purely additive, same as host-control.
+
+## 6. Edge cases
+- **Controller leaves** → `removePeerFromRoom` also does `room.controllers.delete(peerId)`.
+- **Owner leaves** → fallback: promote the earliest remaining **controller** to owner (prefer
+  a controller over a random peer); if none, earliest peer; keep the rest of the set. Reuse
+  the `peerJoinLocks` guard so a reconnect/second-tab doesn't demote (same fix as host).
+- **Promote a peer not in the room** → server rejects (target must be a live peer).
+- **Promote beyond `MAX_CONTROLLERS`** → server rejects, re-syncs the owner's UI.
+- **`everyone` mode** → the `controllers` set is still maintained (so flipping to `host-only`
+  keeps the chosen co-hosts), it just isn't enforced while in `everyone`.
+- **peerId spoofing** → unchanged accepted limitation (see `docs/KNOWN_LIMITATIONS.md`);
+  co-host doesn't widen it materially (still bounded to a temporary room).
+
+## 7. Scale: the "4 of 510 people" part — read this
+
+The role change above is moderate. **Putting 510 people in one room is a separate, larger
+problem** and should be its own track:
+
+- `MAX_PEERS_PER_ROOM` is **25** today. 510 needs a large raise + load testing.
+- **The real bottleneck at scale is heartbeat fan-out, not control events.** Every peer
+  heartbeats and the relay broadcasts each to all peers → O(N²) per interval. At 510 that's
+  ~510×509 / 15s ≈ **17k msg/s just for heartbeats** — the scaling wall.
+- **Co-host actually *helps* the control-event side:** in `host-only` mode only the few
+  controllers emit play/pause/seek, so event *sources* drop from N to K (e.g. 4). Restricting
+  who can drive is synergistic with big rooms.
+- Large rooms therefore need (independent of co-host):
+  - **Heartbeat fan-out reduction** — e.g. only relay controller/owner heartbeats to everyone,
+    relay guest heartbeats only to the owner/controllers (for the UI), or server-side
+    aggregation into periodic snapshots instead of per-peer relay.
+  - **`ROOM_DATA` payload trimming** — a 510-entry peer list is large; send counts + controller
+    details, lazy-load the full roster.
+  - Possibly the **socket.io Redis adapter** for horizontal scaling, and broadcast tuning.
+
+## 8. Effort estimate
+- **Co-host roles** (server gate generalization + `SET_PEER_ROLE` + owner-leave fallback +
+  client gates + promote UI + i18n), at the current ≤25-peer scale: **~3–4 dev days** (same
+  shape as host-control itself — mostly generalizing host→controller-set).
+- **Large-room scaling (510)**: a **separate ~1–2 week** track (heartbeat redesign + payload
+  trimming + cap raise + load testing), independent of co-host. Recommend shipping co-host at
+  the current cap first, then scaling rooms as its own project.
+
+## 9. Suggested sequencing
+1. `CAPABILITIES.CO_HOST` + `controllers`/`ownerPeerId` in room state + `ROOM_DATA` (additive).
+2. Server `SET_PEER_ROLE` + gate generalization + owner-leave fallback + WS tests.
+3. Background: controller-set membership in both gates + `amOwner`/`amController`.
+4. Popup: promote/demote toggles (owner) + Controller badge + i18n.
+5. (Separate track) large-room scaling.
diff --git a/scripts/test-server-ws.mjs b/scripts/test-server-ws.mjs
index cdf4377..a2f7828 100644
--- a/scripts/test-server-ws.mjs
+++ b/scripts/test-server-ws.mjs
@@ -73,6 +73,21 @@ try {
     close();
     resetConnectionRate();
 
+    // --- Default 'everyone' mode does NOT gate anyone (host-control OFF = unchanged) ---
+    // Confirms that with host-only off, a non-host guest can still drive every
+    // room-moving event exactly like before the feature existed.
+    const erid = 'every-'+Date.now();
+    const e1 = await c(), e2 = await c();        // e1 = creator/host, e2 = guest
+    await j(e1, erid, 'ehost'); await j(e2, erid, 'eguest'); e1._m.length = e2._m.length = 0;
+    s(e2,'play',{currentTime:1});                 await w(e1,'play');
+    s(e2,'pause',{currentTime:2});                await w(e1,'pause');
+    s(e2,'seek',{currentTime:3});                 await w(e1,'seek');
+    s(e2,'force_sync_prepare',{targetTime:0});    await w(e1,'force_sync_prepare');
+    s(e2,'episode_lobby',{expectedTitle:'S1E1'}); await w(e1,'episode_lobby');
+    // (reaching here without a wait timeout == nothing was gated)
+    close();
+    resetConnectionRate();
+
     // --- Host Control Mode ---
     const hrid = 'host-'+Date.now();
     const h1 = await c(), h2 = await c();          // h1 = host (first joiner), h2 = guest

From a326087ca5e6692eec2f4861b6101bad742e9de0 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 03:36:22 +0200
Subject: [PATCH 063/151] feat(co-host): server-side multi-controller (owner
 promotes peers to drive)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Generalizes host-only from a single host to a controller SET. The owner (creator)
can promote/demote peers; in host-only mode the relay gate allows any controller,
not just the owner. Single-host is now the special case controllers={owner}, so
existing behavior/tests are unchanged.

- shared: CAPABILITIES.CO_HOST enabled; new SET_PEER_ROLE event; CONTROL_MODE
  payload carries controllers.
- server: room.controllers Set (always incl. owner), advertised in ROOM_DATA;
  gate checks controllers.has(peerId); SET_PEER_ROLE handler (owner-only, target
  must be present, MAX_CONTROLLERS=10 cap, re-sync on reject); controlModePayload
  helper for consistent emits; owner-leave resets controllers + falls back to
  everyone, co-host-leave broadcasts the updated list (dedup/reconnect guarded).
- WS test: promote→drive, plain guest still gated, non-owner can't promote,
  demote→re-gated.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 scripts/test-server-ws.mjs |  40 ++++++++++++++
 server/index.js            | 108 +++++++++++++++++++++++++++++++------
 shared/constants.js        |   7 +--
 3 files changed, 135 insertions(+), 20 deletions(-)

diff --git a/scripts/test-server-ws.mjs b/scripts/test-server-ws.mjs
index a2f7828..a3606ef 100644
--- a/scripts/test-server-ws.mjs
+++ b/scripts/test-server-ws.mjs
@@ -186,6 +186,46 @@ try {
     close();
     resetConnectionRate();
 
+    // --- Co-Host: owner promotes a guest to controller (can drive); demote re-gates ---
+    const crid = 'cohost-'+Date.now();
+    const co1 = await c(), co2 = await c(), co3 = await c(); // owner / to-promote / stays guest
+    await j(co1, crid, 'owner'); await j(co2, crid, 'cohost'); await j(co3, crid, 'guestx');
+    co1._m.length = co2._m.length = co3._m.length = 0;
+    s(co1,'set_control_mode',{controlMode:'host-only'});
+    await w(co1,'control_mode'); await w(co2,'control_mode'); await w(co3,'control_mode');
+    co1._m.length = co2._m.length = co3._m.length = 0;
+    // before promotion the co-host is gated
+    s(co2,'pause',{currentTime:1});
+    let coGatedBefore=false; try { await w(co1,'pause',500); } catch { coGatedBefore=true; }
+    assert.ok(coGatedBefore, 'co-host gated before promotion');
+    // owner promotes co-host → controllers broadcast includes owner + cohost
+    s(co1,'set_peer_role',{peerId:'cohost',controller:true});
+    let promo=null; const pps=Date.now();
+    while(Date.now()-pps<800 && !promo){ for(let i=0;i<co2._m.length;i++){const r=co2._m[i];if(r.startsWith('42')){const[e,dd]=JSON.parse(r.substring(2));if(e==='control_mode'){co2._m.splice(i,1);promo=dd;break;}}} await new Promise(r=>setTimeout(r,30)); }
+    assert.ok(promo && Array.isArray(promo.controllers) && promo.controllers.includes('cohost') && promo.controllers.includes('owner'),
+        'promotion broadcasts controllers (owner + cohost)');
+    co1._m.length = co2._m.length = co3._m.length = 0;
+    // promoted co-host can now drive; a plain guest still cannot
+    s(co2,'pause',{currentTime:2}); await w(co1,'pause');
+    s(co3,'play',{currentTime:3});
+    let plainGuestGated=false; try { await w(co1,'play',500); } catch { plainGuestGated=true; }
+    assert.ok(plainGuestGated, 'plain guest still gated after a co-host is promoted');
+    co1._m.length = co2._m.length = co3._m.length = 0;
+    // a non-owner (the co-host) cannot promote anyone
+    s(co2,'set_peer_role',{peerId:'guestx',controller:true});
+    let nonOwnerBlocked=false; try { await w(co3,'control_mode',500); } catch { nonOwnerBlocked=true; }
+    assert.ok(nonOwnerBlocked, 'non-owner cannot promote (no room broadcast)');
+    co1._m.length = co2._m.length = co3._m.length = 0;
+    // owner demotes the co-host → gated again
+    s(co1,'set_peer_role',{peerId:'cohost',controller:false});
+    await w(co2,'control_mode');
+    co1._m.length = co2._m.length = co3._m.length = 0;
+    s(co2,'seek',{currentTime:4});
+    let coGatedAfter=false; try { await w(co1,'seek',500); } catch { coGatedAfter=true; }
+    assert.ok(coGatedAfter, 'demoted co-host is gated again');
+    close();
+    resetConnectionRate();
+
     // --- Password room ---
     const prid = 'pw-'+Date.now();
     const pw1 = await c(); await j(pw1, prid, 'admin', 's3cret');
diff --git a/server/index.js b/server/index.js
index 8641d62..42cbc10 100644
--- a/server/index.js
+++ b/server/index.js
@@ -168,13 +168,27 @@ const HOST_ONLY_GATED_EVENTS = new Set([
 // Features this relay supports, advertised to clients in ROOM_DATA so they can
 // enable matching UI/behavior only when the server actually backs it. Append a
 // flag here when a new server-gated feature ships (e.g. co-host promotion).
-const SERVER_CAPABILITIES = [CAPABILITIES.HOST_CONTROL];
+const SERVER_CAPABILITIES = [CAPABILITIES.HOST_CONTROL, CAPABILITIES.CO_HOST];
 
 // M-4: minimum interval between CONTROL_MODE changes per room. Stops a rapidly
 // toggling host from thrashing every guest's UI (locked/unlocked/locked...) and
 // from generating one broadcast per toggle across all peers.
 const CONTROL_MODE_MIN_INTERVAL_MS = 500;
 
+// Co-Host: max peers (incl. the owner) allowed to drive a 'host-only' room. Bounds
+// the controller set + the CONTROL_MODE payload. Beyond this, just use 'everyone'.
+const MAX_CONTROLLERS = 10;
+
+// Canonical control-mode/role snapshot sent to clients. controllers always includes
+// the owner (hostPeerId). Built in one place so every emit stays consistent.
+function controlModePayload(room) {
+    return {
+        controlMode: room.controlMode,
+        hostPeerId: room.hostPeerId,
+        controllers: room.controllers ? Array.from(room.controllers) : (room.hostPeerId ? [room.hostPeerId] : [])
+    };
+}
+
 function log(type, message, details = '') {
     const debugLogging = process.env.DEBUG_LOGGING === '1';
     const isVerbose = type === 'CONN' || type === 'ROOM' || type === 'DEDUPE' || type === 'CORS' || type === 'ACKDROP';
@@ -238,12 +252,24 @@ function removePeerFromRoom(socketId, roomId, reason) {
     //      'disconnect' the kicked old socket fires. Demoting there would silently
     //      unlock the room on every host network blip.
     const peerRejoining = peerJoinLocks.has(peerId);
-    if (!peerRejoining && !isPeerStillConnected && room.hostPeerId === peerId && room.peers.size > 0) {
-        const nextPeerData = room.peerData.values().next().value;
-        room.hostPeerId = nextPeerData ? nextPeerData.peerId : null;
-        room.controlMode = CONTROL_MODES.EVERYONE;
-        io.to(roomId).emit(EVENTS.CONTROL_MODE, { controlMode: room.controlMode, hostPeerId: room.hostPeerId });
-        log('ROOM', `Host left room ${roomId.substring(0, 3)}*** — fell back to 'everyone', new host: ${room.hostPeerId}`);
+    const peerGone = !isPeerStillConnected && !peerRejoining;
+    if (peerGone && room.controllers && room.peers.size > 0) {
+        const wasController = room.controllers.has(peerId);
+        room.controllers.delete(peerId);
+        if (room.hostPeerId === peerId) {
+            // Owner left → reassign owner + fall back to 'everyone' so the room is
+            // never stuck locked, and reset the controller set to just the new owner.
+            const nextPeerData = room.peerData.values().next().value;
+            room.hostPeerId = nextPeerData ? nextPeerData.peerId : null;
+            room.controlMode = CONTROL_MODES.EVERYONE;
+            room.controllers = new Set(room.hostPeerId ? [room.hostPeerId] : []);
+            io.to(roomId).emit(EVENTS.CONTROL_MODE, controlModePayload(room));
+            log('ROOM', `Owner left room ${roomId.substring(0, 3)}*** — fell back to 'everyone', new owner: ${room.hostPeerId}`);
+        } else if (wasController) {
+            // A co-host left → keep the mode, just broadcast the updated controller list.
+            io.to(roomId).emit(EVENTS.CONTROL_MODE, controlModePayload(room));
+            log('ROOM', `Controller ${peerId} left room ${roomId.substring(0, 3)}***`);
+        }
     }
 
     // 4. Delete empty room
@@ -379,10 +405,12 @@ io.on('connection', (socket) => {
                             peerIds: new Map(),
                             peerData: new Map(),
                             lastActivity: Date.now(),
-                            // Host Control Mode: creator (first joiner) is the host.
+                            // Host Control Mode: creator (first joiner) is the host/owner.
                             hostPeerId: peerId,
                             controlMode: CONTROL_MODES.EVERYONE,
-                            lastControlModeChangeAt: 0 // M-4: per-room debounce for control-mode toggles
+                            lastControlModeChangeAt: 0, // M-4: per-room debounce for control-mode toggles
+                            // Co-Host: peers allowed to drive in 'host-only'. Always includes the owner.
+                            controllers: new Set([peerId])
                         };
                         rooms.set(roomId, room);
                         createdByMe = true;
@@ -470,6 +498,7 @@ io.on('connection', (socket) => {
                 activeLobby: room.activeLobby || null,
                 hostPeerId: room.hostPeerId || null,
                 controlMode: room.controlMode || CONTROL_MODES.EVERYONE,
+                controllers: room.controllers ? Array.from(room.controllers) : [],
                 capabilities: SERVER_CAPABILITIES
             });
             log('ROOM', `Peer ${peerId} joined: ${roomId.substring(0, 3)}***`);
@@ -512,11 +541,11 @@ io.on('connection', (socket) => {
                     room.lastActivity = Date.now();
 
                     // --- Host Control Mode gate ---
-                    // In 'host-only' mode, drop room-moving events from non-host guests.
-                    // Robust chokepoint: independent of client behavior, kills spam (e.g.
-                    // a guest spamming FORCE_SYNC to drag everyone). Heartbeats/ACKs pass.
+                    // In 'host-only' mode, drop room-moving events from anyone who is not
+                    // a controller (the owner + any promoted co-hosts). Robust chokepoint:
+                    // independent of client behavior, kills spam. Heartbeats/ACKs pass.
                     if (room.controlMode === CONTROL_MODES.HOST_ONLY &&
-                        mapping.peerId !== room.hostPeerId &&
+                        !(room.controllers && room.controllers.has(mapping.peerId)) &&
                         HOST_ONLY_GATED_EVENTS.has(eventName)) {
                         log('ROOM', `Dropped ${eventName} from guest ${mapping.peerId} in host-only room ${mapping.roomId.substring(0, 3)}***`);
                         return;
@@ -633,12 +662,12 @@ io.on('connection', (socket) => {
         const room = rooms.get(mapping.roomId);
         if (!room) return;
 
-        // Only the host may change the control mode.
+        // Only the owner may change the control mode.
         if (mapping.peerId !== room.hostPeerId) {
             log('AUTH', `Non-host ${mapping.peerId} tried to set control mode in ${mapping.roomId.substring(0, 3)}***`);
             // Re-sync the sender to the actual room state so any optimistic UI
             // (e.g. popup toggle) reverts — covers stale-local-amHost races (H-5).
-            socket.emit(EVENTS.CONTROL_MODE, { controlMode: room.controlMode, hostPeerId: room.hostPeerId });
+            socket.emit(EVENTS.CONTROL_MODE, controlModePayload(room));
             return;
         }
         if (room.controlMode === mode) return; // no-op, ignore (UI debounce backstop)
@@ -650,17 +679,62 @@ io.on('connection', (socket) => {
         if (now - room.lastControlModeChangeAt < CONTROL_MODE_MIN_INTERVAL_MS) {
             log('ROOM', `Control mode toggle debounced in ${mapping.roomId.substring(0, 3)}***`);
             // Re-sync the sender so any optimistic UI matches the actual (unchanged) state.
-            socket.emit(EVENTS.CONTROL_MODE, { controlMode: room.controlMode, hostPeerId: room.hostPeerId });
+            socket.emit(EVENTS.CONTROL_MODE, controlModePayload(room));
             return;
         }
 
         room.controlMode = mode;
         room.lastControlModeChangeAt = now;
         room.lastActivity = now;
-        io.to(mapping.roomId).emit(EVENTS.CONTROL_MODE, { controlMode: mode, hostPeerId: room.hostPeerId });
+        io.to(mapping.roomId).emit(EVENTS.CONTROL_MODE, controlModePayload(room));
         log('ROOM', `Control mode set to '${mode}' by host in room ${mapping.roomId.substring(0, 3)}***`);
     });
 
+    socket.on(EVENTS.SET_PEER_ROLE, (data) => {
+        if (!checkEventRate(socket.id)) {
+            log('SECURITY', `Event rate limit exceeded for socket (SET_PEER_ROLE): ${socket.id}`);
+            socket.disconnect(true);
+            return;
+        }
+        if (!data || typeof data !== 'object') return;
+        const targetPeerId = typeof data.peerId === 'string' ? data.peerId.substring(0, 16) : null;
+        const makeController = data.controller === true;
+        if (!targetPeerId) return;
+
+        const mapping = socketToRoom.get(socket.id);
+        if (!mapping) return;
+        const room = rooms.get(mapping.roomId);
+        if (!room || !room.controllers) return;
+
+        // Only the owner may promote/demote controllers.
+        if (mapping.peerId !== room.hostPeerId) {
+            log('AUTH', `Non-owner ${mapping.peerId} tried to set peer role in ${mapping.roomId.substring(0, 3)}***`);
+            socket.emit(EVENTS.CONTROL_MODE, controlModePayload(room));
+            return;
+        }
+        // The owner is always a controller and cannot be demoted.
+        if (targetPeerId === room.hostPeerId) return;
+        // Target must be a peer currently in the room.
+        const targetPresent = Array.from(room.peerData.values()).some(d => d.peerId === targetPeerId);
+        if (!targetPresent) return;
+
+        if (makeController) {
+            if (room.controllers.has(targetPeerId)) return; // no-op
+            if (room.controllers.size >= MAX_CONTROLLERS) {
+                log('ROOM', `Controller cap (${MAX_CONTROLLERS}) reached in ${mapping.roomId.substring(0, 3)}***`);
+                socket.emit(EVENTS.CONTROL_MODE, controlModePayload(room)); // re-sync owner UI
+                return;
+            }
+            room.controllers.add(targetPeerId);
+        } else {
+            if (!room.controllers.has(targetPeerId)) return; // no-op
+            room.controllers.delete(targetPeerId);
+        }
+        room.lastActivity = Date.now();
+        io.to(mapping.roomId).emit(EVENTS.CONTROL_MODE, controlModePayload(room));
+        log('ROOM', `Peer ${targetPeerId} ${makeController ? 'promoted to' : 'demoted from'} controller in ${mapping.roomId.substring(0, 3)}***`);
+    });
+
     socket.on(EVENTS.EVENT_ACK, (data) => {
         if (!checkEventRate(socket.id)) {
             log('SECURITY', `Event rate limit exceeded for socket (ACK): ${socket.id}`);
diff --git a/shared/constants.js b/shared/constants.js
index 2281098..dd0137d 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -35,7 +35,8 @@ export const EVENTS = {
 
     // Host Control Mode
     SET_CONTROL_MODE: "set_control_mode", // Client -> Server: host sets room control mode ('everyone' | 'host-only')
-    CONTROL_MODE: "control_mode",          // Server -> Client: room control mode changed { controlMode, hostPeerId }
+    CONTROL_MODE: "control_mode",          // Server -> Client: control mode/role changed { controlMode, hostPeerId, controllers }
+    SET_PEER_ROLE: "set_peer_role",        // Client -> Server: owner promotes/demotes a peer { peerId, controller }
 
     // Media Control
     PLAY: "play",
@@ -75,8 +76,8 @@ export const CONTROL_MODES = {
 // relays (unknown/absent list → feature treated as unavailable) and old clients
 // simply ignore the field. Add a flag here as each server-gated feature lands.
 export const CAPABILITIES = {
-    HOST_CONTROL: 'host-control'
-    // Future: CO_HOST: 'co-host'  // owner promotes guests to additional controllers
+    HOST_CONTROL: 'host-control',
+    CO_HOST: 'co-host'  // owner promotes guests to additional controllers
 };
 
 export const HEARTBEAT_INTERVAL = 15000; // 15s

From 7c65fe80cbc1cd759a547bd6293254987ca94a01 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 03:41:23 +0200
Subject: [PATCH 064/151] feat(co-host): client gates use controller-set
 membership (background + content)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- background: track controllers[] from ROOM_DATA/CONTROL_MODE (restore + reset on
  teardown); add amController() (owner or co-host). Both gates now key on controller
  membership (sender: !amController(); receiver: senderId not in controllers); desync
  invariant uses amController. Thread controllers/amController/coHostSupported through
  GET_STATUS/GET_CONTROL_MODE/CONTROL_MODE. New SET_PEER_ROLE message (owner→server).
- content: gate on amController instead of amHost (a controller is not a gated guest);
  reconcile/HOST_BLOCKED updated accordingly. Drop now-unused hcmAmHost.

Single-host behavior unchanged (owner is always the sole controller until they promote).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/background.js | 57 ++++++++++++++++++++++++++++++-----------
 extension/content.js    | 16 ++++++------
 2 files changed, 50 insertions(+), 23 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 1494877..836263a 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -82,7 +82,10 @@ function serverSupports(cap) { return Array.isArray(serverCapabilities) && serve
 // in heartbeats so the host's popup UI can show "Solo" instead of silently
 // appearing un-ACK'd.
 let hcmDesynced = false;
-function amHost() { return !!peerId && hostPeerId === peerId; }
+// Co-Host: peerIds allowed to drive in host-only (always includes the owner).
+let controllers = [];
+function amHost() { return !!peerId && hostPeerId === peerId; }            // owner: can toggle mode / promote
+function amController() { return amHost() || (!!peerId && controllers.includes(peerId)); } // can drive the room
 // Room-moving actions a guest may not initiate while in host-only mode.
 const HOST_ONLY_GATED_ACTIONS = [
     EVENTS.PLAY, EVENTS.PAUSE, EVENTS.SEEK,
@@ -160,6 +163,7 @@ function ensureState() {
                     // Host Control Mode: restore role/mode/capabilities from persisted room.
                     controlMode = currentRoom.controlMode || CONTROL_MODES.EVERYONE;
                     hostPeerId = currentRoom.hostPeerId || null;
+                    controllers = Array.isArray(currentRoom.controllers) ? currentRoom.controllers : [];
                     serverCapabilities = Array.isArray(currentRoom.capabilities) ? currentRoom.capabilities : [];
                 }
                 if (data.hcmDesynced !== undefined) hcmDesynced = data.hcmDesynced;
@@ -477,6 +481,7 @@ async function leaveRoomAfterIdleGrace(reason) {
     currentRoom = null;
     controlMode = CONTROL_MODES.EVERYONE;
     hostPeerId = null;
+    controllers = [];
     serverCapabilities = [];
     hcmDesynced = false;
     // Notify content.js/popup BEFORE currentTabId is cleared so they can reset
@@ -692,7 +697,7 @@ async function connect() {
 // mislabel us as "Solo" to peers and (in content) keep us ignoring host commands
 // after the reason to is gone. Call after any controlMode/hostPeerId change.
 function hcmEnforceDesyncInvariant() {
-    if (hcmDesynced && !(controlMode === CONTROL_MODES.HOST_ONLY && !amHost())) {
+    if (hcmDesynced && !(controlMode === CONTROL_MODES.HOST_ONLY && !amController())) {
         hcmDesynced = false;
         if (storageInitialized) chrome.storage.session.set({ hcmDesynced: false });
     }
@@ -701,7 +706,7 @@ function hcmEnforceDesyncInvariant() {
 function broadcastControlMode() {
     // Notify popup (role badge / host toggle) and the active content tab
     // (so it can enable/disable the host-only guest gate).
-    const payload = { type: 'CONTROL_MODE', controlMode, hostPeerId, amHost: amHost(), hostControlSupported: serverSupports(CAPABILITIES.HOST_CONTROL) };
+    const payload = { type: 'CONTROL_MODE', controlMode, hostPeerId, controllers, amHost: amHost(), amController: amController(), hostControlSupported: serverSupports(CAPABILITIES.HOST_CONTROL), coHostSupported: serverSupports(CAPABILITIES.CO_HOST) };
     chrome.runtime.sendMessage(payload).catch(() => {});
     if (currentTabId) {
         const tabId = parseInt(currentTabId);
@@ -943,16 +948,16 @@ function handleServerEvent(event, data) {
         return;
     }
     // Host Control Mode (receiver-side backstop): in host-only mode, ignore
-    // room-moving events from any non-host peer. The server already drops these,
+    // room-moving events from any non-controller. The server already drops these,
     // so this covers old/buggy/modified clients that slipped through.
     // Defensive: require a known hostPeerId — if the server ever sends host-only
-    // without a host (state inconsistency), gate-everyone would lock the host
+    // without a host (state inconsistency), gate-everyone would lock the owner
     // out of their own room (L-6).
     if (controlMode === CONTROL_MODES.HOST_ONLY &&
         hostPeerId &&
         HOST_ONLY_GATED_ACTIONS.includes(event) &&
-        data.senderId && data.senderId !== hostPeerId) {
-        addLog(`Ignored ${event} from non-host ${data.senderId} (host-only)`, 'warn');
+        data.senderId && data.senderId !== hostPeerId && !controllers.includes(data.senderId)) {
+        addLog(`Ignored ${event} from non-controller ${data.senderId} (host-only)`, 'warn');
         return;
     }
     switch (event) {
@@ -961,6 +966,7 @@ function handleServerEvent(event, data) {
             // Host Control Mode: adopt room role/mode on (re)join.
             controlMode = data.controlMode || CONTROL_MODES.EVERYONE;
             hostPeerId = data.hostPeerId || null;
+            controllers = Array.isArray(data.controllers) ? data.controllers : [];
             serverCapabilities = Array.isArray(data.capabilities) ? data.capabilities : [];
             hcmEnforceDesyncInvariant();
             broadcastControlMode();
@@ -1025,13 +1031,15 @@ function handleServerEvent(event, data) {
             // Host Control Mode changed (toggle or host-leave fallback).
             controlMode = data.controlMode || CONTROL_MODES.EVERYONE;
             hostPeerId = data.hostPeerId || null;
+            controllers = Array.isArray(data.controllers) ? data.controllers : [];
             hcmEnforceDesyncInvariant();
             if (currentRoom) {
                 currentRoom.controlMode = controlMode;
                 currentRoom.hostPeerId = hostPeerId;
+                currentRoom.controllers = controllers;
                 if (storageInitialized) chrome.storage.session.set({ currentRoom });
             }
-            addLog(`Control mode: ${controlMode}${amHost() ? ' (you are host)' : ''}`, 'info');
+            addLog(`Control mode: ${controlMode}${amHost() ? ' (you are owner)' : (amController() ? ' (you are controller)' : '')}`, 'info');
             broadcastControlMode();
             break;
         case EVENTS.ROOM_LIST:
@@ -1596,6 +1604,7 @@ function leaveOldRoomIfSwitching(newRoomId) {
         currentRoom = null;
         controlMode = CONTROL_MODES.EVERYONE;
         hostPeerId = null;
+        controllers = [];
         serverCapabilities = [];
         hcmDesynced = false;
         // Notify content.js/popup so they drop any guest-side HCM state from the
@@ -1715,8 +1724,11 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             ping: currentPingMs,
             controlMode,
             hostPeerId,
+            controllers,
             amHost: amHost(),
-            hostControlSupported: serverSupports(CAPABILITIES.HOST_CONTROL)
+            amController: amController(),
+            hostControlSupported: serverSupports(CAPABILITIES.HOST_CONTROL),
+            coHostSupported: serverSupports(CAPABILITIES.CO_HOST)
         });
     } else if (message.type === 'SET_CONTROL_MODE') {
         // Popup (host) toggles the room control mode. Server validates host authority
@@ -1732,12 +1744,26 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         }
         emit(EVENTS.SET_CONTROL_MODE, { controlMode: mode });
         sendResponse({ status: 'ok' });
+    } else if (message.type === 'SET_PEER_ROLE') {
+        // Popup (owner) promotes/demotes a peer to/from controller. Server validates
+        // owner authority and broadcasts CONTROL_MODE back, refreshing all clients.
+        const targetPeerId = typeof message.peerId === 'string' ? message.peerId : null;
+        if (!targetPeerId) {
+            sendResponse({ status: 'invalid' });
+            return;
+        }
+        if (!amHost()) {
+            sendResponse({ status: 'not_owner' });
+            return;
+        }
+        emit(EVENTS.SET_PEER_ROLE, { peerId: targetPeerId, controller: message.controller === true });
+        sendResponse({ status: 'ok' });
     } else if (message.type === 'GET_CONTROL_MODE') {
         // content.js asks for current mode/role on (re)injection. Include the
         // persisted desync state so a page reload re-adopts it — otherwise a fresh
         // content script would start synced while background keeps relaying us as
         // "Solo" to the host (stale-badge split-brain).
-        sendResponse({ controlMode, hostPeerId, amHost: amHost(), desynced: hcmDesynced, hostControlSupported: serverSupports(CAPABILITIES.HOST_CONTROL) });
+        sendResponse({ controlMode, hostPeerId, controllers, amHost: amHost(), amController: amController(), desynced: hcmDesynced, hostControlSupported: serverSupports(CAPABILITIES.HOST_CONTROL), coHostSupported: serverSupports(CAPABILITIES.CO_HOST) });
     } else if (message.type === 'REQUEST_HOST_SYNC') {
         // content.js resync: hand back the host's extrapolated current position.
         sendResponse({ target: getHostSyncTarget() });
@@ -1782,6 +1808,7 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         currentRoom = null;
         controlMode = CONTROL_MODES.EVERYONE;
         hostPeerId = null;
+        controllers = [];
         serverCapabilities = [];
         hcmDesynced = false;
         // Notify content.js/popup BEFORE currentTabId is cleared so they drop any
@@ -1908,12 +1935,12 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         });
     } else if (message.type === 'CONTENT_EVENT') {
         const processEvent = () => {
-            // Host Control Mode (sender-side): a guest in host-only mode must not
-            // drive the room. Don't broadcast; hand the action back to content.js so
-            // it can snap the local player back (and, in step 4, offer desync).
+            // Host Control Mode (sender-side): a non-controller in host-only mode must
+            // not drive the room. Don't broadcast; hand the action back to content.js so
+            // it can snap the local player back / offer desync.
             // Defensive: require a known hostPeerId (L-6) — otherwise the actual
-            // host would gate themselves if state ever becomes inconsistent.
-            if (controlMode === CONTROL_MODES.HOST_ONLY && hostPeerId && !amHost() &&
+            // owner would gate themselves if state ever becomes inconsistent.
+            if (controlMode === CONTROL_MODES.HOST_ONLY && hostPeerId && !amController() &&
                 HOST_ONLY_GATED_ACTIONS.includes(message.action)) {
                 addLog(`Host-only: blocked local ${message.action} (you are a guest)`, 'warn');
                 if (sender.tab && sender.tab.id) {
diff --git a/extension/content.js b/extension/content.js
index 1353950..499ede1 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -108,7 +108,7 @@
     // we handle the *local* UX: snap back to the host's position, or — if the user
     // really wants to — let them go solo (desync) with a resync escape hatch.
     let hcmControlMode = 'everyone';   // mirror of room control mode
-    let hcmAmHost = false;             // are we the host?
+    let hcmAmController = false;        // are we allowed to drive (owner or co-host)?
     let hcmHostPeerId = null;          // last known host peerId (room/host identity)
     let hcmDesynced = false;           // user chose to go solo
     let hcmSnapBackCooldownUntil = 0;  // suppress re-trigger right after a snap-back
@@ -138,7 +138,7 @@
     document.addEventListener('pointerdown', _hcmGesture, { capture: true, passive: true });
 
     function hcmIsGuestGated() {
-        return hcmControlMode === 'host-only' && !hcmAmHost;
+        return hcmControlMode === 'host-only' && !hcmAmController;
     }
 
     // EC-9 intent classifier: only a *clearly deliberate* guest action triggers the
@@ -247,7 +247,7 @@
         // role/mode from it in case our CONTROL_MODE broadcast hasn't landed yet
         // (join race, EC-5) — otherwise we'd miss the dialog/snap-back.
         hcmControlMode = 'host-only';
-        hcmAmHost = false;
+        hcmAmController = false;
         if (hcmDesynced) return; // already solo, nothing to do
 
         const intent = hcmClassifyIntent();
@@ -847,7 +847,7 @@
             const wasGated = hcmIsGuestGated();
             const prevHostPeerId = hcmHostPeerId;
             hcmControlMode = message.controlMode || 'everyone';
-            hcmAmHost = !!message.amHost;
+            hcmAmController = !!message.amController;
             hcmHostPeerId = message.hostPeerId || null;
             // Reset guest-side state when leaving the gated state, OR when the
             // host identity changes (room switch, host-leave fallback, missed
@@ -1488,13 +1488,13 @@
     chrome.runtime.sendMessage({ type: 'GET_CONTROL_MODE' }, (res) => {
         if (chrome.runtime.lastError || !res) return;
         hcmControlMode = res.controlMode || 'everyone';
-        hcmAmHost = !!res.amHost;
+        hcmAmController = !!res.amController;
         hcmHostPeerId = res.hostPeerId || null;
         // Re-adopt persisted desync after a page reload so we don't start synced
         // while background still relays us as "Solo" to the host (split-brain).
-        // Only when we're actually a gated guest — never adopt a stale flag as the
-        // host or in 'everyone' mode (would self-label "Solo" / ignore commands).
-        if (res.desynced && res.controlMode === 'host-only' && !res.amHost && !hcmDesynced) {
+        // Only when we're actually a gated guest — never adopt a stale flag as a
+        // controller or in 'everyone' mode (would self-label "Solo" / ignore commands).
+        if (res.desynced && res.controlMode === 'host-only' && !res.amController && !hcmDesynced) {
             hcmDesynced = true;
             hcmShowBadge();
         }

From 1ec2396c418dce8991d915c40318aa49c31779cf Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 03:45:00 +0200
Subject: [PATCH 065/151] =?UTF-8?q?feat(co-host):=20popup=20UI=20=E2=80=94?=
 =?UTF-8?q?=20promote/demote,=20controller=20badges,=20controller-aware=20?=
 =?UTF-8?q?lock?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- updateHostControlUI takes a state object now; role badge shows Host / Controller
  / Guest; remote-control lock uses amController (a co-host can drive, so their
  buttons aren't locked).
- Peer list: Host/Controller badges and, for the owner, a per-peer Give control /
  Revoke button (SET_PEER_ROLE). Shown only when the feature is active and the room
  is host-only or the viewer is the owner — no role noise for guests in normal rooms.
  Hidden entirely against a relay without the co-host capability.
- i18n: BADGE_CONTROLLER, BTN_GIVE_CONTROL, BTN_REVOKE_CONTROL across all 15 locales.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/locales/de.json    |  3 ++
 extension/locales/en.json    |  3 ++
 extension/locales/es.json    |  3 ++
 extension/locales/fr.json    |  3 ++
 extension/locales/it.json    |  3 ++
 extension/locales/ja.json    |  3 ++
 extension/locales/ko.json    |  3 ++
 extension/locales/nl.json    |  3 ++
 extension/locales/pl.json    |  3 ++
 extension/locales/pt-BR.json |  3 ++
 extension/locales/pt.json    |  3 ++
 extension/locales/ru.json    |  3 ++
 extension/locales/tr.json    |  3 ++
 extension/locales/uk.json    |  3 ++
 extension/locales/zh.json    |  3 ++
 extension/popup.js           | 85 +++++++++++++++++++++++++++---------
 16 files changed, 110 insertions(+), 20 deletions(-)

diff --git a/extension/locales/de.json b/extension/locales/de.json
index 1313c47..cefe399 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "Der Host steuert die Wiedergabe für alle.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Gast",
+  "BADGE_CONTROLLER": "Controller",
+  "BTN_GIVE_CONTROL": "Steuerung geben",
+  "BTN_REVOKE_CONTROL": "Entziehen",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Schaut alleine — ignoriert die Befehle des Hosts",
   "HCM_DIALOG_TITLE": "KoalaSync · Der Host steuert diesen Raum",
diff --git a/extension/locales/en.json b/extension/locales/en.json
index 3bc6356..786dd15 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "The host controls playback for everyone.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Guest",
+  "BADGE_CONTROLLER": "Controller",
+  "BTN_GIVE_CONTROL": "Give control",
+  "BTN_REVOKE_CONTROL": "Revoke",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Watching on their own — host's commands are ignored",
   "HCM_DIALOG_TITLE": "KoalaSync · Host controls this room",
diff --git a/extension/locales/es.json b/extension/locales/es.json
index 2c1f2d6..8fe004e 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "El anfitrión controla la reproducción para todos.",
   "BADGE_HOST": "Anfitrión",
   "BADGE_GUEST": "Invitado",
+  "BADGE_CONTROLLER": "Controlador",
+  "BTN_GIVE_CONTROL": "Dar control",
+  "BTN_REVOKE_CONTROL": "Quitar",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Viendo por su cuenta — ignora los comandos del anfitrión",
   "HCM_DIALOG_TITLE": "KoalaSync · El anfitrión controla esta sala",
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index 0ff7b82..b51dca7 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "L'hôte contrôle la lecture pour tout le monde.",
   "BADGE_HOST": "Hôte",
   "BADGE_GUEST": "Invité",
+  "BADGE_CONTROLLER": "Contrôleur",
+  "BTN_GIVE_CONTROL": "Donner le contrôle",
+  "BTN_REVOKE_CONTROL": "Retirer",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Regarde de son côté — ignore les commandes de l'hôte",
   "HCM_DIALOG_TITLE": "KoalaSync · L'hôte contrôle ce salon",
diff --git a/extension/locales/it.json b/extension/locales/it.json
index b5780b7..3f8160d 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "L'host controlla la riproduzione per tutti.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Ospite",
+  "BADGE_CONTROLLER": "Controller",
+  "BTN_GIVE_CONTROL": "Dai il controllo",
+  "BTN_REVOKE_CONTROL": "Revoca",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Guarda per conto proprio — ignora i comandi dell'host",
   "HCM_DIALOG_TITLE": "KoalaSync · L'host controlla questa stanza",
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index f4f6e66..3b15360 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "ホストが全員の再生を操作します。",
   "BADGE_HOST": "ホスト",
   "BADGE_GUEST": "ゲスト",
+  "BADGE_CONTROLLER": "操作権あり",
+  "BTN_GIVE_CONTROL": "操作権を付与",
+  "BTN_REVOKE_CONTROL": "取り消す",
   "BADGE_DESYNCED": "ソロ",
   "TOOLTIP_PEER_DESYNCED": "単独で視聴中 — ホストのコマンドを無視しています",
   "HCM_DIALOG_TITLE": "KoalaSync · ホストがこのルームを操作中",
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index f9bbe80..7063238 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "호스트가 모두의 재생을 제어합니다.",
   "BADGE_HOST": "호스트",
   "BADGE_GUEST": "게스트",
+  "BADGE_CONTROLLER": "제어자",
+  "BTN_GIVE_CONTROL": "제어 권한 부여",
+  "BTN_REVOKE_CONTROL": "취소",
   "BADGE_DESYNCED": "단독",
   "TOOLTIP_PEER_DESYNCED": "혼자 시청 중 — 호스트 명령을 무시합니다",
   "HCM_DIALOG_TITLE": "KoalaSync · 호스트가 이 방을 제어합니다",
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index fe6ede8..edfc97c 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "De host bedient de weergave voor iedereen.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Gast",
+  "BADGE_CONTROLLER": "Bediener",
+  "BTN_GIVE_CONTROL": "Bediening geven",
+  "BTN_REVOKE_CONTROL": "Intrekken",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Zelfstandig aan het kijken — negeert de commando's van de host",
   "HCM_DIALOG_TITLE": "KoalaSync · De host bedient deze kamer",
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index e28a7ce..0196a94 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "Host steruje odtwarzaniem dla wszystkich.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Gość",
+  "BADGE_CONTROLLER": "Sterujący",
+  "BTN_GIVE_CONTROL": "Daj sterowanie",
+  "BTN_REVOKE_CONTROL": "Odbierz",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Ogląda samodzielnie — ignoruje polecenia hosta",
   "HCM_DIALOG_TITLE": "KoalaSync · Host steruje tym pokojem",
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index d353142..4c64d6e 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "O anfitrião controla a reprodução para todos.",
   "BADGE_HOST": "Anfitrião",
   "BADGE_GUEST": "Convidado",
+  "BADGE_CONTROLLER": "Controlador",
+  "BTN_GIVE_CONTROL": "Dar controle",
+  "BTN_REVOKE_CONTROL": "Revogar",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Assistindo por conta própria — ignora os comandos do anfitrião",
   "HCM_DIALOG_TITLE": "KoalaSync · O anfitrião controla esta sala",
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index ab5544d..949bf54 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "O anfitrião controla a reprodução para todos.",
   "BADGE_HOST": "Anfitrião",
   "BADGE_GUEST": "Convidado",
+  "BADGE_CONTROLLER": "Controlador",
+  "BTN_GIVE_CONTROL": "Dar controlo",
+  "BTN_REVOKE_CONTROL": "Revogar",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "A ver por conta própria — ignora os comandos do anfitrião",
   "HCM_DIALOG_TITLE": "KoalaSync · O anfitrião controla esta sala",
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index 66a222c..0ad6f57 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "Ведущий управляет воспроизведением для всех.",
   "BADGE_HOST": "Ведущий",
   "BADGE_GUEST": "Гость",
+  "BADGE_CONTROLLER": "Управляющий",
+  "BTN_GIVE_CONTROL": "Дать управление",
+  "BTN_REVOKE_CONTROL": "Отозвать",
   "BADGE_DESYNCED": "Соло",
   "TOOLTIP_PEER_DESYNCED": "Смотрит отдельно — игнорирует команды ведущего",
   "HCM_DIALOG_TITLE": "KoalaSync · Комнатой управляет ведущий",
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index ff4918b..c3a2616 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "Oynatmayı herkes için sunucu kontrol eder.",
   "BADGE_HOST": "Sunucu",
   "BADGE_GUEST": "Misafir",
+  "BADGE_CONTROLLER": "Kontrolcü",
+  "BTN_GIVE_CONTROL": "Kontrol ver",
+  "BTN_REVOKE_CONTROL": "Geri al",
   "BADGE_DESYNCED": "Solo",
   "TOOLTIP_PEER_DESYNCED": "Tek başına izliyor — sunucu komutlarını yok sayar",
   "HCM_DIALOG_TITLE": "KoalaSync · Bu odayı sunucu kontrol ediyor",
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
index a76366d..551e5a3 100644
--- a/extension/locales/uk.json
+++ b/extension/locales/uk.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "Ведучий керує відтворенням для всіх.",
   "BADGE_HOST": "Ведучий",
   "BADGE_GUEST": "Гість",
+  "BADGE_CONTROLLER": "Керуючий",
+  "BTN_GIVE_CONTROL": "Дати керування",
+  "BTN_REVOKE_CONTROL": "Відкликати",
   "BADGE_DESYNCED": "Соло",
   "TOOLTIP_PEER_DESYNCED": "Дивиться окремо — ігнорує команди ведучого",
   "HCM_DIALOG_TITLE": "KoalaSync · Кімнатою керує ведучий",
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
index 9169d7b..7e07428 100644
--- a/extension/locales/zh.json
+++ b/extension/locales/zh.json
@@ -50,6 +50,9 @@
   "NOTICE_HOST_CONTROLS": "由主持人为所有人控制播放。",
   "BADGE_HOST": "主持人",
   "BADGE_GUEST": "访客",
+  "BADGE_CONTROLLER": "控制者",
+  "BTN_GIVE_CONTROL": "授予控制权",
+  "BTN_REVOKE_CONTROL": "撤销",
   "BADGE_DESYNCED": "单独",
   "TOOLTIP_PEER_DESYNCED": "单独观看中 — 忽略主持人的命令",
   "HCM_DIALOG_TITLE": "KoalaSync · 主持人控制本房间",
diff --git a/extension/popup.js b/extension/popup.js
index 5c29a92..f2785f7 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -249,7 +249,7 @@ async function init() {
             updatePingDisplay(res.ping);
             updatePeerList(res.peers);
             lastKnownPeers = res.peers || [];
-            updateHostControlUI(res.controlMode, res.amHost, res.hostControlSupported, res.status === 'connected');
+            updateHostControlUI({ controlMode: res.controlMode, amHost: res.amHost, amController: res.amController, controllers: res.controllers, hostPeerId: res.hostPeerId, hostControlSupported: res.hostControlSupported, coHostSupported: res.coHostSupported, inRoom: res.status === 'connected' });
             if (res.lastActionState) updateLastActionUI(res.lastActionState, res.peers);
 
             // If user has a room configured but background is not connected (disconnected or idle),
@@ -313,19 +313,37 @@ function toggleUIState(inRoom) {
 // True when we're a guest in a host-only room → remote-control buttons are locked.
 let hcmGuestLocked = false;
 
-function updateHostControlUI(controlMode, amHost, hostControlSupported, inRoom) {
+// Co-Host state mirrored for the peer-list renderer (promote/demote + role badges).
+let hcmAmOwner = false;
+let hcmControllers = [];
+let hcmCoHostSupported = false;
+let hcmOwnerPeerId = null;
+let hcmRoomIsHostOnly = false;
+
+function updateHostControlUI(state) {
+    const s = state || {};
+    const controlMode = s.controlMode;
+    const amHost = !!s.amHost;
+    const amController = !!s.amController;
+    const hostOnly = controlMode === 'host-only';
+
+    // Stash for the peer-list renderer, then force it to re-render with new roles.
+    hcmAmOwner = amHost;
+    hcmControllers = Array.isArray(s.controllers) ? s.controllers : [];
+    hcmCoHostSupported = !!s.coHostSupported;
+    hcmOwnerPeerId = s.hostPeerId || null;
+    hcmRoomIsHostOnly = hostOnly;
+    lastPeersJson = '';
+    if (activePeers) updatePeerList(activePeers);
+
     const card = elements.hostControlCard;
     if (!card) return;
-    const hostOnly = controlMode === 'host-only';
-    // Explicit capability advertised by the relay in ROOM_DATA. Against an older
-    // relay it's false/absent → the feature is unavailable, so hide the card
-    // entirely instead of showing a misleading "Guest".
-    const serverSupportsHostControl = !!hostControlSupported;
-    // Only show the card when it's actually meaningful:
-    //   - host: always (so they can enable/disable host-only)
-    //   - guest: only while host-only is active (explains why they can't control)
-    // A guest in a normal "everyone" room sees nothing — no confusing noise.
-    const show = inRoom && serverSupportsHostControl && (amHost || hostOnly);
+    // Explicit capability advertised by the relay. Against an older relay it's
+    // false/absent → feature unavailable, so hide the card instead of misleading UI.
+    const serverSupportsHostControl = !!s.hostControlSupported;
+    // Show the card only when meaningful: owner always (to manage); a non-controller
+    // guest only while host-only is active. A guest in a normal room sees nothing.
+    const show = s.inRoom && serverSupportsHostControl && (amHost || hostOnly);
     if (!show) {
         card.style.display = 'none';
         hcmGuestLocked = false;
@@ -334,16 +352,18 @@ function updateHostControlUI(controlMode, amHost, hostControlSupported, inRoom)
     }
     card.style.display = 'block';
     if (elements.hostRoleBadge) {
-        elements.hostRoleBadge.textContent = amHost ? (getMessage('BADGE_HOST') || 'Host') : (getMessage('BADGE_GUEST') || 'Guest');
-        elements.hostRoleBadge.style.background = amHost ? 'var(--accent)' : 'var(--text-muted)';
+        const role = amHost ? (getMessage('BADGE_HOST') || 'Host')
+                   : amController ? (getMessage('BADGE_CONTROLLER') || 'Controller')
+                   : (getMessage('BADGE_GUEST') || 'Guest');
+        elements.hostRoleBadge.textContent = role;
+        elements.hostRoleBadge.style.background = (amHost || amController) ? 'var(--accent)' : 'var(--text-muted)';
     }
     if (elements.hostControlToggleRow) elements.hostControlToggleRow.style.display = amHost ? 'flex' : 'none';
     if (elements.hostControlToggle) elements.hostControlToggle.checked = hostOnly;
-    if (elements.hostControlGuestNote) elements.hostControlGuestNote.style.display = (!amHost && hostOnly) ? 'block' : 'none';
+    if (elements.hostControlGuestNote) elements.hostControlGuestNote.style.display = (!amController && hostOnly) ? 'block' : 'none';
 
-    // A guest in host-only mode can't drive the room → lock the remote controls so
-    // clicks don't silently get gated (and leave the button stuck).
-    hcmGuestLocked = (!amHost && hostOnly);
+    // Only a non-controller is locked out of the remote controls.
+    hcmGuestLocked = (!amController && hostOnly);
     setRemoteControlsLocked(hcmGuestLocked);
 }
 
@@ -676,6 +696,31 @@ function updatePeerList(peers) {
                 header.appendChild(solo);
             }
 
+            // Co-Host: role badges + the owner's promote/demote control. Shown when the
+            // feature is active and either the room is host-only or we're the owner
+            // (so a guest in a normal room sees no role noise).
+            const showRoles = !!hcmOwnerPeerId && (hcmRoomIsHostOnly || hcmAmOwner);
+            if (showRoles) {
+                const isOwner = pId === hcmOwnerPeerId;
+                const isController = !isOwner && hcmControllers.includes(pId);
+                if (isOwner || isController) {
+                    const roleBadge = document.createElement('span');
+                    roleBadge.style.cssText = 'font-size:10px; color:#fff; background:var(--accent); padding:2px 6px; border-radius:6px; font-weight:600;';
+                    roleBadge.textContent = isOwner ? (getMessage('BADGE_HOST') || 'Host') : (getMessage('BADGE_CONTROLLER') || 'Controller');
+                    header.appendChild(roleBadge);
+                }
+                // Owner can promote/demote any non-owner peer.
+                if (hcmAmOwner && hcmCoHostSupported && !isOwner) {
+                    const btn = document.createElement('button');
+                    btn.style.cssText = 'font-size:10px; padding:2px 8px; border-radius:6px; cursor:pointer; border:1px solid var(--accent); background:transparent; color:var(--accent); white-space:nowrap;';
+                    btn.textContent = isController ? (getMessage('BTN_REVOKE_CONTROL') || 'Revoke') : (getMessage('BTN_GIVE_CONTROL') || 'Give control');
+                    btn.addEventListener('click', () => {
+                        chrome.runtime.sendMessage({ type: 'SET_PEER_ROLE', peerId: pId, controller: !isController }, () => {});
+                    });
+                    header.appendChild(btn);
+                }
+            }
+
             peerItem.appendChild(header);
 
             // Media Info
@@ -1743,7 +1788,7 @@ chrome.runtime.onMessage.addListener((msg) => {
         if (msg.peers) detectPeerChanges(msg.peers);
     } else if (msg.type === 'CONTROL_MODE') {
         const inRoom = elements.sectionActive && elements.sectionActive.style.display === 'block';
-        updateHostControlUI(msg.controlMode, msg.amHost, msg.hostControlSupported, inRoom);
+        updateHostControlUI({ controlMode: msg.controlMode, amHost: msg.amHost, amController: msg.amController, controllers: msg.controllers, hostPeerId: msg.hostPeerId, hostControlSupported: msg.hostControlSupported, coHostSupported: msg.coHostSupported, inRoom });
     } else if (msg.type === 'CONNECTION_STATUS') {
         if (msg.status === 'connected' || msg.status === 'disconnected') {
             if (joinBtnTimeout) { clearTimeout(joinBtnTimeout); joinBtnTimeout = null; }
@@ -1761,7 +1806,7 @@ chrome.runtime.onMessage.addListener((msg) => {
                 if (res.peers) updatePeerList(res.peers);
                 if (res.lastActionState) updateLastActionUI(res.lastActionState, res.peers);
                 updatePingDisplay(res.ping);
-                updateHostControlUI(res.controlMode, res.amHost, res.hostControlSupported, true);
+                updateHostControlUI({ controlMode: res.controlMode, amHost: res.amHost, amController: res.amController, controllers: res.controllers, hostPeerId: res.hostPeerId, hostControlSupported: res.hostControlSupported, coHostSupported: res.coHostSupported, inRoom: true });
             });
         }
         if (msg.status === 'disconnected') {

From 17ac5c0a6f2a6e0979246ef38933f4d177ea719e Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 05:54:50 +0200
Subject: [PATCH 066/151] =?UTF-8?q?fix(host-control-mode):=20adversarial?=
 =?UTF-8?q?=20audit=20=E2=80=94=20force-sync=20stall,=20desync/lobby,=20ga?=
 =?UTF-8?q?te=20parity,=20BC=20tests?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Audit fixes (each verified against the actual code path):

H-1 (server): track force-sync initiator on PREPARE; let the demoted
initiator's EXECUTE through the host-only gate so mid-sync demotion no
longer strands the whole room paused. Clear on EXECUTE/peer-leave.

M-1 (background): episode-lobby gate now uses !amController() for parity
with CONTENT_EVENT and server gates — co-hosts can drive the room and
initiate lobbies, not just the owner.

M-2/M-3 (popup/content/background): forceSyncReset respects hcmGuestLocked;
desynced guest skips EPISODE_LOBBY so they don't get frozen in pause after
lobby completion, and checkEpisodeLobbyCompletion excludes desynced peers
from the required count so they don't block the lobby.

M-4 (background): getHostSyncTarget clamps extrapolation to 2x heartbeat
interval so a stale host heartbeat can't snap the guest tens of seconds
past the host's real position.

L-1..L-4 (server/content/background/popup): clarify dedup comment re:
network-blip window, enforce desync invariant on SW-restore, add
forceSyncBtn guest-locked backstop, refresh badge text in place.

Backward compatibility (verified by BC-1..BC-4 regression tests):
- Old client ↔ new server: server adds fields only, never requires; old
  heartbeats stripped of desynced; host-only enforced server-side even
  when the client has no awareness.
- New client ↔ old server: empty capabilities → host-control UI hidden,
  all gates default to everyone, behavior byte-identical to pre-HCM.
- Mixed rooms: every pre-HCM event type relays cleanly in both directions.
---
 extension/background.js    |  35 ++++++---
 extension/content.js       |  19 ++++-
 extension/popup.js         |   6 +-
 scripts/test-server-ws.mjs | 144 +++++++++++++++++++++++++++++++++++++
 server/index.js            |  40 +++++++++--
 5 files changed, 226 insertions(+), 18 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 836263a..481be64 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1,4 +1,4 @@
-import { EVENTS, CONTROL_MODES, CAPABILITIES, PROTOCOL_VERSION, OFFICIAL_SERVER_URL, OFFICIAL_SERVER_TOKEN, EPISODE_LOBBY_TIMEOUT, FORCE_SYNC_TIMEOUT } from './shared/constants.js';
+import { EVENTS, CONTROL_MODES, CAPABILITIES, PROTOCOL_VERSION, OFFICIAL_SERVER_URL, OFFICIAL_SERVER_TOKEN, EPISODE_LOBBY_TIMEOUT, FORCE_SYNC_TIMEOUT, HEARTBEAT_INTERVAL } from './shared/constants.js';
 import { generateUsername } from './shared/names.js';
 import { loadLocale, getMessage, getSystemLanguage } from './i18n.js';
 import { sameEpisode } from './episode-utils.js';
@@ -93,14 +93,22 @@ const HOST_ONLY_GATED_ACTIONS = [
     EVENTS.EPISODE_LOBBY, EVENTS.EPISODE_LOBBY_CANCEL
 ];
 // Best-effort estimate of where the room (host) is right now, for guest snap-back.
-// Extrapolates from the host peer's last known state (±~1s). Used by content.js.
+// Extrapolates from the host peer's last known state. Used by content.js.
 function getHostSyncTarget() {
     if (!currentRoom || !Array.isArray(currentRoom.peers)) return null;
     const host = currentRoom.peers.find(p => (typeof p === 'object' ? p.peerId : p) === hostPeerId);
     if (!host || typeof host !== 'object') return null;
     let targetTime = typeof host.currentTime === 'number' ? host.currentTime : null;
     if (targetTime !== null && host.playbackState === 'playing' && host.lastHeartbeat) {
-        targetTime += Math.max(0, (Date.now() - host.lastHeartbeat) / 1000);
+        // M-4: clamp extrapolation. lastHeartbeat is the *arrival* time of the host's
+        // last heartbeat — beyond ~2 heartbeat intervals the host's true state is too
+        // stale (they may have paused without the next heartbeat landing yet) and the
+        // linear extrapolation would overshoot by tens of seconds. Cap it so the
+        // guest snaps to a position within plausibility; the next heartbeat corrects.
+        const elapsedSec = (Date.now() - host.lastHeartbeat) / 1000;
+        if (elapsedSec > 0 && elapsedSec <= 2 * HEARTBEAT_INTERVAL / 1000) {
+            targetTime += elapsedSec;
+        }
     }
     return { playbackState: host.playbackState || null, targetTime };
 }
@@ -167,6 +175,11 @@ function ensureState() {
                     serverCapabilities = Array.isArray(currentRoom.capabilities) ? currentRoom.capabilities : [];
                 }
                 if (data.hcmDesynced !== undefined) hcmDesynced = data.hcmDesynced;
+                // L-2: enforce the desync invariant on restore — a persisted hcmDesynced=true
+                // is stale if our restored role is no longer "gated guest" (e.g. we became
+                // the host, or the room is in 'everyone'). Without this, the first heartbeat
+                // after SW restart would broadcast a bogus Solo flag for up to 15s.
+                hcmEnforceDesyncInvariant();
                 if (data.lastActionState) lastActionState = data.lastActionState;
                 
                 if (data.eventQueue) eventQueue = [...eventQueue, ...data.eventQueue].slice(0, 50);
@@ -1482,8 +1495,12 @@ function executeEpisodeLobby() {
 
 function checkEpisodeLobbyCompletion() {
     if (!episodeLobby || !currentRoom) return;
-    const peerCount = currentRoom.peers ? currentRoom.peers.length : 1;
-    if (episodeLobby.readyPeers.length >= peerCount) {
+    const peers = Array.isArray(currentRoom.peers) ? currentRoom.peers : [];
+    // M-3: desynced peers (watching on their own) sit out the lobby — their content
+    // script ignores EPISODE_LOBBY and never reports ready. Don't let them block
+    // completion: count only peers who actually participate.
+    const participatingCount = peers.filter(p => !(typeof p === 'object' && p.desynced)).length;
+    if (episodeLobby.readyPeers.length >= participatingCount) {
         executeEpisodeLobby();
     }
 }
@@ -2174,9 +2191,11 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         // Host Control Mode: a gated guest must NOT initiate an episode lobby — the
         // server drops the guest's EPISODE_LOBBY, so the lobby would never complete
         // and the guest would self-pause (PAUSE_FOR_LOBBY) into a 60s freeze. In
-        // host-only the host drives episode sync; the guest just follows / snaps back.
-        if (controlMode === CONTROL_MODES.HOST_ONLY && !amHost()) {
-            addLog(`Episode change ("${newTitle}") — host-only guest, not creating a lobby (host drives).`, 'info');
+        // host-only the controllers (owner + co-hosts) drive episode sync; a plain
+        // guest just follows / snaps back. Use amController() for parity with the
+        // CONTENT_EVENT gate and the server's controllers-based check.
+        if (controlMode === CONTROL_MODES.HOST_ONLY && !amController()) {
+            addLog(`Episode change ("${newTitle}") — host-only guest, not creating a lobby (controller drives).`, 'info');
             sendResponse({ status: 'host_only_guest_skip' });
             return;
         }
diff --git a/extension/content.js b/extension/content.js
index 499ede1..a7ade14 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -961,6 +961,15 @@
 
         // Episode Auto-Sync: Lobby notification from background
         if (message.type === 'EPISODE_LOBBY') {
+            // Host Control Mode: a desynced guest is watching on their own and must
+            // not join the lobby flow. Otherwise they'd pause on title match, report
+            // ready, but then ignore the host's FORCE_SYNC_* (hcmDesynced skip in
+            // SERVER_COMMAND) and end up frozen in pause. They also can't be counted
+            // toward lobby completion (background filters them out).
+            if (hcmDesynced) {
+                sendResponse({ status: 'ignored_desynced' });
+                return true;
+            }
             const expectedTitle = message.expectedTitle;
             if (expectedTitle) {
                 reportLog(`Episode lobby received: waiting for "${expectedTitle}"`, 'info');
@@ -1504,9 +1513,13 @@
     chrome.runtime.sendMessage({ type: 'GET_HCM_STRINGS' }, (res) => {
         if (chrome.runtime.lastError || !res) return;
         Object.keys(hcmStrings).forEach(k => { if (res[k]) hcmStrings[k] = res[k]; });
-        // If the badge is already showing (early desync), re-render it with the
-        // localized text now that we have it.
-        if (hcmBadgeHost) { hcmRemoveBadge(); hcmShowBadge(); }
+        // If the badge is already showing (early desync), refresh its text in place.
+        // Re-creating the host element nukes the click target mid-poll and can drop a
+        // click that landed between remove() and the re-create (L-4).
+        if (hcmBadgeHost) {
+            const span = hcmBadgeHost.shadowRoot && hcmBadgeHost.shadowRoot.querySelector('span');
+            if (span) span.textContent = '● ' + hcmStrings.badge;
+        }
     });
 
 })();
diff --git a/extension/popup.js b/extension/popup.js
index f2785f7..d1449f1 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -1494,6 +1494,7 @@ elements.targetTab.addEventListener('change', () => {
 });
 
 elements.forceSyncBtn.addEventListener('click', async () => {
+    if (hcmGuestLocked) return; // guest in host-only room — backstop (M-2/L-3)
     if (elements.forceSyncBtn.disabled) return;
     
     const originalText = elements.forceSyncBtn.textContent;
@@ -1535,7 +1536,10 @@ elements.forceSyncBtn.addEventListener('click', async () => {
     const peerCount = (status.peers || []).filter(p => (typeof p === 'object' ? p.peerId : p) !== localPeerId).length;
     const syncTimeoutMs = peerCount === 0 ? 3000 : 12000;
     const forceSyncReset = () => {
-        if (!forceSyncDone) {
+        // Don't unlock a button that's locked because we became a guest mid-flight —
+        // hcmGuestLocked is the source of truth for the lock state, and the next
+        // CONTROL_MODE update restores the correct label.
+        if (!forceSyncDone && !hcmGuestLocked) {
             elements.forceSyncBtn.disabled = false;
             elements.forceSyncBtn.textContent = originalText;
         }
diff --git a/scripts/test-server-ws.mjs b/scripts/test-server-ws.mjs
index a3606ef..7e7a0de 100644
--- a/scripts/test-server-ws.mjs
+++ b/scripts/test-server-ws.mjs
@@ -226,6 +226,150 @@ try {
     close();
     resetConnectionRate();
 
+    // --- H-1: a demoted co-host's FORCE_SYNC_EXECUTE still relays when they
+    //     initiated the in-flight PREPARE. Without the initiator exemption, the
+    //     EXECUTE would be dropped by the host-only gate and every peer would be
+    //     left stuck paused. ---
+    const h1rid = 'h1-'+Date.now();
+    const ho = await c(), hc = await c(), hg = await c();   // owner / co-host / guest
+    await j(ho, h1rid, 'owner'); await j(hc, h1rid, 'cohost'); await j(hg, h1rid, 'guest');
+    ho._m.length = hc._m.length = hg._m.length = 0;
+    s(ho,'set_control_mode',{controlMode:'host-only'});
+    await w(ho,'control_mode'); await w(hc,'control_mode'); await w(hg,'control_mode');
+    ho._m.length = hc._m.length = hg._m.length = 0;
+    // owner promotes co-host; co-host initiates force sync
+    s(ho,'set_peer_role',{peerId:'cohost',controller:true});
+    await w(hc,'control_mode');
+    ho._m.length = hc._m.length = hg._m.length = 0;
+    s(hc,'force_sync_prepare',{targetTime:0});
+    await w(ho,'force_sync_prepare'); await w(hg,'force_sync_prepare');
+    ho._m.length = hc._m.length = hg._m.length = 0;
+    // owner demotes the co-host mid-flight — the EXECUTE must still go through.
+    s(ho,'set_peer_role',{peerId:'cohost',controller:false});
+    await w(hc,'control_mode');
+    ho._m.length = hc._m.length = hg._m.length = 0;
+    s(hc,'force_sync_execute',{});
+    await w(ho,'force_sync_execute'); await w(hg,'force_sync_execute');
+    // After the EXECUTE, the initiator slot is cleared: a fresh EXECUTE from the
+    // (now plain guest) co-host is gated again, confirming the exemption is scoped.
+    ho._m.length = hc._m.length = hg._m.length = 0;
+    s(hc,'force_sync_execute',{});
+    let reGated=false; try { await w(ho,'force_sync_execute',500); } catch { reGated=true; }
+    assert.ok(reGated, 'initiator exemption is cleared after the EXECUTE relayes');
+    close();
+    resetConnectionRate();
+
+    // --- A guest's stray EXECUTE (no matching PREPARE they initiated) is still gated ---
+    const grid = 'h1b-'+Date.now();
+    const go = await c(), gg = await c();
+    await j(go, grid, 'own'); await j(gg, grid, 'gst');
+    go._m.length = gg._m.length = 0;
+    s(go,'set_control_mode',{controlMode:'host-only'});
+    await w(go,'control_mode'); await w(gg,'control_mode');
+    go._m.length = gg._m.length = 0;
+    s(gg,'force_sync_execute',{});
+    let uninitGated=false; try { await w(go,'force_sync_execute',500); } catch { uninitGated=true; }
+    assert.ok(uninitGated, 'guest FORCE_SYNC_EXECUTE without a matching PREPARE is gated');
+    close();
+    resetConnectionRate();
+
+    // =====================================================================
+    // BACKWARD COMPATIBILITY — old clients (pre-HCM build) against new server.
+    // These tests simulate an old client by deliberately omitting fields the
+    // new feature added (desynced in heartbeats, capabilities expectation)
+    // and by ignoring CONTROL_MODE broadcasts. The wire format for existing
+    // events must stay byte-compatible: the relay must accept old payloads
+    // and must not inject new fields old clients would misread.
+    // =====================================================================
+
+    // --- BC-1: Old-client heartbeat (no `desynced` field) is accepted and
+    //     relayed without injecting `desynced`. Old clients never sent the
+    //     field; the relay must strip it from the wire so we don't surprise
+    //     them with unexpected keys. ---
+    const bcrid = 'bc-'+Date.now();
+    const bco = await c(), bcn = await c();    // bco = "old", bcn = "new"
+    await j(bco, bcrid, 'oldp'); await j(bcn, bcrid, 'newp');
+    bco._m.length = bcn._m.length = 0;
+    // Old-client heartbeat: every field an old build would send, NO `desynced`.
+    s(bco,'peer_status',{
+        status:'heartbeat', username:'old', tabTitle:'t', mediaTitle:'m',
+        playbackState:'playing', currentTime:42, volume:0.5, muted:false
+    });
+    let bcRelay = null; const bcStart = Date.now();
+    while (Date.now()-bcStart < 800 && !bcRelay) {
+        for (let i=0;i<bcn._m.length;i++){ const r=bcn._m[i]; if(r.startsWith('42')){ const [e,dd]=JSON.parse(r.substring(2)); if(e==='peer_status'){ bcn._m.splice(i,1); bcRelay=dd; break; } } }
+        await new Promise(r=>setTimeout(r,30));
+    }
+    assert.ok(bcRelay, 'old-style heartbeat relayed');
+    assert.ok(bcRelay.desynced === undefined, 'old-client heartbeat has no desynced on the wire (stripped)');
+    assert.equal(bcRelay.currentTime, 42, 'old-client currentTime preserved');
+    assert.equal(bcRelay.senderId, 'oldp', 'old-client senderId preserved');
+    close();
+    resetConnectionRate();
+
+    // --- BC-2: Old client in a host-only room — server still gates its events
+    //     even though the client has no awareness of the mode. This is the
+    //     key guarantee for mixed rooms during rollout: an old client can't
+    //     drive a host-only room just because it ignores CONTROL_MODE. ---
+    const hmrid = 'hcmix-'+Date.now();
+    const hmo = await c(), hmg = await c();    // hmo = host (new), hmg = "old" guest
+    await j(hmo, hmrid, 'hmixhost'); await j(hmg, hmrid, 'hmixold');
+    hmo._m.length = hmg._m.length = 0;
+    s(hmo,'set_control_mode',{controlMode:'host-only'});
+    await w(hmo,'control_mode'); await w(hmg,'control_mode');   // old client's socket still receives it; old client would ignore
+    hmo._m.length = hmg._m.length = 0;
+    // "Old" guest tries to drive — server must drop. Host must NOT receive it.
+    s(hmg,'pause',{currentTime:5});
+    let oldGated=false; try { await w(hmo,'pause',600); } catch { oldGated=true; }
+    assert.ok(oldGated, 'old-client pause dropped in host-only (server enforces regardless of client awareness)');
+    // Host's own command still relays to the old client's socket — old client
+    // applies it via its existing PLAY/PAUSE handler.
+    s(hmo,'pause',{currentTime:7}); await w(hmg,'pause');
+    close();
+    resetConnectionRate();
+
+    // --- BC-3: Mixed room with old + new client in 'everyone' mode — every
+    //     event flows identically to pre-HCM. Confirms no regression in the
+    //     default-mode relay path that could fragment a rolling-update room. ---
+    const mxrid = 'mix-'+Date.now();
+    const mxo = await c(), mxn = await c();    // mxo = old, mxn = new
+    await j(mxo, mxrid, 'oldmx'); await j(mxn, mxrid, 'newmx');
+    mxo._m.length = mxn._m.length = 0;
+    // Old → new
+    s(mxo,'play',{currentTime:1}); await w(mxn,'play');
+    s(mxo,'seek',{currentTime:99}); await w(mxn,'seek');
+    s(mxo,'force_sync_prepare',{targetTime:5}); await w(mxn,'force_sync_prepare');
+    s(mxo,'episode_lobby',{expectedTitle:'S1E1'}); await w(mxn,'episode_lobby');
+    // New → old
+    mxo._m.length = mxn._m.length = 0;
+    s(mxn,'pause',{currentTime:2}); await w(mxo,'pause');
+    s(mxn,'seek',{currentTime:50}); await w(mxo,'seek');
+    s(mxn,'force_sync_execute',{}); await w(mxo,'force_sync_execute');
+    s(mxn,'episode_lobby_cancel',{}); await w(mxo,'episode_lobby_cancel');
+    close();
+    resetConnectionRate();
+
+    // --- BC-4: New-client heartbeat WITH `desynced` does not break an old
+    //     client's receive path. The field is appended but old clients ignore
+    //     unknown keys — verify the relay preserves every pre-HCM field and
+    //     only adds `desynced`. ---
+    const b4rid = 'bc4-'+Date.now();
+    const b4old = await c(), b4new = await c();
+    await j(b4old, b4rid, 'b4o'); await j(b4new, b4rid, 'b4n');
+    b4old._m.length = b4new._m.length = 0;
+    s(b4new,'peer_status',{status:'heartbeat', desynced:true, currentTime:7, playbackState:'paused', username:'newp'});
+    let b4Relay = null; const b4Start = Date.now();
+    while (Date.now()-b4Start < 800 && !b4Relay) {
+        for (let i=0;i<b4old._m.length;i++){ const r=b4old._m[i]; if(r.startsWith('42')){ const [e,dd]=JSON.parse(r.substring(2)); if(e==='peer_status'){ b4old._m.splice(i,1); b4Relay=dd; break; } } }
+        await new Promise(r=>setTimeout(r,30));
+    }
+    assert.ok(b4Relay, 'new-client heartbeat relayed to old client');
+    assert.equal(b4Relay.desynced, true, 'desynced preserved for new recipients');
+    assert.equal(b4Relay.currentTime, 7, 'old fields preserved on the same relay');
+    assert.equal(b4Relay.senderId, 'b4n', 'senderId preserved');
+    close();
+    resetConnectionRate();
+
     // --- Password room ---
     const prid = 'pw-'+Date.now();
     const pw1 = await c(); await j(pw1, prid, 'admin', 's3cret');
diff --git a/server/index.js b/server/index.js
index 42cbc10..43d50b8 100644
--- a/server/index.js
+++ b/server/index.js
@@ -247,15 +247,21 @@ function removePeerFromRoom(socketId, roomId, reason) {
     //      reassign host to the earliest remaining peer so the feature stays usable.
     //      (v1: immediate fallback, no grace period — see host-control-mode docs.)
     //      Skip while a join for this peerId is in flight (peerJoinLocks holds it):
-    //      that's a reconnect / second tab where the same peerId is being re-added
-    //      right after — covers both the explicit 'dedupe' removal AND the
-    //      'disconnect' the kicked old socket fires. Demoting there would silently
-    //      unlock the room on every host network blip.
+    //      that's the reconnect / second-tab case where the same peerId is being
+    //      re-added right after the dedupe kicked the old socket. Demoting there
+    //      would silently unlock the room on every second-tab open.
+    //      NOTE: this does *not* cover a true network blip where the old socket's
+    //      'disconnect' fires before the new socket acquires its join lock — in that
+    //      window peerJoinLocks is empty, so the fallback fires. Documented v1
+    //      limitation (no host grace period); see KNOWN_LIMITATIONS.md.
     const peerRejoining = peerJoinLocks.has(peerId);
     const peerGone = !isPeerStillConnected && !peerRejoining;
     if (peerGone && room.controllers && room.peers.size > 0) {
         const wasController = room.controllers.has(peerId);
         room.controllers.delete(peerId);
+        // H-1: a leaving initiator strands the room's force-sync — release the
+        // slot so a future controller's PREPARE can take over cleanly.
+        if (room.forceSyncInitiator === peerId) room.forceSyncInitiator = null;
         if (room.hostPeerId === peerId) {
             // Owner left → reassign owner + fall back to 'everyone' so the room is
             // never stuck locked, and reset the controller set to just the new owner.
@@ -410,7 +416,12 @@ io.on('connection', (socket) => {
                             controlMode: CONTROL_MODES.EVERYONE,
                             lastControlModeChangeAt: 0, // M-4: per-room debounce for control-mode toggles
                             // Co-Host: peers allowed to drive in 'host-only'. Always includes the owner.
-                            controllers: new Set([peerId])
+                            controllers: new Set([peerId]),
+                            // H-1: peerId of the in-flight force-sync initiator. Lets a demoted
+                            // controller's FORCE_SYNC_EXECUTE through the host-only gate — without
+                            // it, demoting a co-host mid-force-sync would drop their EXECUTE and
+                            // leave every peer stuck paused.
+                            forceSyncInitiator: null
                         };
                         rooms.set(roomId, room);
                         createdByMe = true;
@@ -544,12 +555,29 @@ io.on('connection', (socket) => {
                     // In 'host-only' mode, drop room-moving events from anyone who is not
                     // a controller (the owner + any promoted co-hosts). Robust chokepoint:
                     // independent of client behavior, kills spam. Heartbeats/ACKs pass.
-                    if (room.controlMode === CONTROL_MODES.HOST_ONLY &&
+                    //
+                    // H-1 exception: a demoted co-host's FORCE_SYNC_EXECUTE still has to
+                    // land — otherwise their already-relayed PREPARE would leave the whole
+                    // room stuck paused. Track the in-flight initiator on PREPARE and let
+                    // their matching EXECUTE through regardless of current controllers set.
+                    if (eventName === EVENTS.FORCE_SYNC_PREPARE &&
+                        room.controlMode === CONTROL_MODES.HOST_ONLY &&
+                        room.controllers && room.controllers.has(mapping.peerId)) {
+                        room.forceSyncInitiator = mapping.peerId;
+                    }
+                    const isOwnForceSyncExecute = eventName === EVENTS.FORCE_SYNC_EXECUTE &&
+                        room.forceSyncInitiator && mapping.peerId === room.forceSyncInitiator;
+                    if (!isOwnForceSyncExecute &&
+                        room.controlMode === CONTROL_MODES.HOST_ONLY &&
                         !(room.controllers && room.controllers.has(mapping.peerId)) &&
                         HOST_ONLY_GATED_EVENTS.has(eventName)) {
                         log('ROOM', `Dropped ${eventName} from guest ${mapping.peerId} in host-only room ${mapping.roomId.substring(0, 3)}***`);
                         return;
                     }
+                    // Clear initiator tracking once the EXECUTE has been relayed.
+                    if (eventName === EVENTS.FORCE_SYNC_EXECUTE && room.forceSyncInitiator) {
+                        room.forceSyncInitiator = null;
+                    }
 
                     // --- S-2 & S-3: Sanitize ALL relay fields (strings, numbers, booleans) ---
                     const clamp    = (val, max) => typeof val === 'string' ? val.substring(0, max) : undefined;

From 9fc58dca4b249b13c26a6c64dbc27ebbc2f5367c Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 06:02:55 +0200
Subject: [PATCH 067/151] docs(assets): add ready-to-paste marketing copy kit
 (1-sentence, 3-sentence, full)

Three drop-in lengths for product listings, launch pages, and directory
submissions where the same pitch gets re-typed repeatedly. Bonus taglines
for hero headlines and social bios. All claims verified against the
codebase and docs/TESTED_SERVICES.md.
---
 assets/MarketingCopy.md | 66 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 assets/MarketingCopy.md

diff --git a/assets/MarketingCopy.md b/assets/MarketingCopy.md
new file mode 100644
index 0000000..b7c2d5d
--- /dev/null
+++ b/assets/MarketingCopy.md
@@ -0,0 +1,66 @@
+# KoalaSync — Marketing Copy Kit
+
+Ready-to-paste copy for product listings, launch pages, directory submissions, and anywhere else you keep re-typing the same pitch. Three lengths, one consistent message. Pick the one that fits the field limit.
+
+---
+
+## 1. One-Sentence Pitch
+
+> KoalaSync is a privacy-first browser extension that synchronizes video playback across almost any website so you can watch with friends in real time — no accounts, no tracking, and your video never passes through anyone's server but the original site's.
+
+**Shorter alternative** (for tight tagline fields):
+
+> Private, universal watch parties on any website — no accounts, no tracking, no media proxying.
+
+---
+
+## 2. Three-Sentence Overview
+
+> KoalaSync is a lightweight browser extension that keeps you and your friends perfectly in sync on YouTube, Netflix, Twitch, Prime Video, Jellyfin, Emby, and almost any other site with an HTML5 video player — press play once and everyone stays together. It's built privacy-first: no accounts, no telemetry, and the official relay server runs entirely in volatile RAM with zero persistence, so nothing about your sessions is ever stored. Open source under the MIT license and fully self-hostable with a single Docker command, KoalaSync is a transparent watch-party tool that works everywhere and respects your data sovereignty.
+
+---
+
+## 3. Full Description
+
+### Watch together — on any site, on your terms.
+
+Counting down "3, 2, 1, play" over voice chat doesn't scale past two people. KoalaSync fixes that with a tiny browser extension that synchronizes play, pause, and seeking across everyone in the room, on almost any website with a `<video>` element. Create a room, share a link, press play — that's it.
+
+### What makes KoalaSync different
+
+Most watch-party tools fall into one of two traps: they only work on a short allowlist of sites (site-specific extensions that need a separate build for every platform), or they route your video through their own player and servers. KoalaSync was built around three principles that break that mold.
+
+**Universal by design.** If the site has an HTML5 `<video>` element, KoalaSync can usually sync it. YouTube, Netflix, Twitch, Prime Video, Disney+, Jellyfin, Emby, and countless niche sites work out of the box — no per-site integration to wait for, no extension swap when your friends want to switch services.
+
+**Your video never touches our servers.** KoalaSync only relays tiny timing messages — play, pause, seek position, readiness — over a hand-rolled WebSocket protocol. The actual video keeps streaming directly from the original site to each viewer's browser. KoalaSync never proxies, transcodes, uploads, or redistributes a single frame, which also means there is no legal gray zone around redistribution.
+
+**Privacy is the default, not an upgrade.** No accounts, no emails, no telemetry, no analytics, no behavior profiling. The official relay server runs entirely in volatile RAM and keeps zero persistent state — when the room closes, the data is gone. Pick a nickname or let KoalaSync generate one for you and you're in.
+
+### Built for people who actually want to read the code
+
+KoalaSync is MIT-licensed open source, built by a solo developer. Audit it, fork it, change it. The extension is dependency-free with a direct Socket.IO wire implementation — no opaque libraries, no framework bloat, no surprise third-party SDKs. Want full sovereignty? Self-host your own relay with a single Docker command and keep all watch-party coordination traffic inside your own infrastructure. The official public relay is there when you don't care, self-hosting is there when you do.
+
+### Little touches you'll notice
+
+- **Episode Auto-Sync** pauses the room when someone loads the next episode and resumes only when everyone is ready — no spoilers, no one left behind on the previous cliffhanger.
+- **Smart Audio Compressor** tames the modern "whisper dialogue, deafening explosion" mix with one click. Three presets or full manual control over threshold, ratio, attack, and release.
+- **One-click invite links** auto-configure the server and room for your friends — they just click the link and they're in. No fumbling with server URLs or room IDs.
+- **Dual-heartbeat architecture** kills ghost rooms and stale connections before they desync your session.
+- **15 languages** fully translated and switchable in real time from the settings panel — English, German, French, Spanish, Portuguese (Brazil + European), Russian, Italian, Polish, Turkish, Dutch, Japanese, Korean, Chinese, Ukrainian.
+
+### Install and start in under a minute
+
+Install KoalaSync from the Chrome Web Store or Firefox Add-ons, click "Create Room," share the invite link, and pick a video. The official relay is ready out of the box — no setup required unless you want to self-host.
+
+- Website: https://sync.koalastuff.net
+- GitHub: https://github.com/Shik3i/KoalaSync
+
+---
+
+## Bonus: Taglines (for hero headlines, social bios, meta descriptions)
+
+- Watch together. Anywhere. Privately.
+- The watch-party tool that works on every site and tracks none of them.
+- Sync play, pause, and seek on any video — no accounts, no logs, no lock-in.
+- Self-hostable, open-source watch parties for the post-"3, 2, 1, play" era.
+- Press play once. Stay together anywhere.

From 5379778a203719197ecf3b89069eb6a7360c0a8b Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 08:29:59 +0200
Subject: [PATCH 068/151] fix(extension): widen peerId generation to 16 hex
 chars (64-bit)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

8 hex chars (32-bit) gives ~7% collision probability at the relay's
25k-peer capacity and ~1% at 10k peers. A same-room collision silently
triggers the dedup path and kicks the older session with a confusing
'Another session with this ID joined' error.

16 hex chars (64-bit) drops collision probability to ~1e-10 even at one
million peers. The server's JOIN_ROOM sanitizer already clamps peerId to
16 chars, so no server change is needed. Fully backward compatible:

- Existing clients keep their persisted 8-char peerId (only newly
  generated IDs change).
- Mixed 8-char + 16-char ID rooms work — both fit the server's 16-char
  clamp.
- No protocol change on the wire.

Birthday-paradox reference (computed, not estimated):
  32-bit @ 10k peers:  1.16%
  32-bit @ 25k peers:  7.02%
  64-bit @ 25k peers:  ~0.017e-9%
---
 extension/background.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 481be64..f40fe4c 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -339,7 +339,14 @@ function updateLocalPeerState(targetPeerId, updates) {
 async function getPeerId() {
     const data = await chrome.storage.local.get(['peerId']);
     if (data.peerId) return data.peerId;
-    const newId = self.crypto.randomUUID().substring(0, 8);
+    // 16 hex chars = 64 bits. At a busy relay (25k concurrent peers) the 32-bit
+    // (8-hex) generation would hit ~7% collision probability per snapshot —
+    // and a same-room collision triggers our dedup path, kicking the older
+    // session with a confusing error. 16 hex chars drops the probability to
+    // ~1e-10 even at a million peers, and the server already clamps peerId to
+    // 16 chars (server/index.js JOIN_ROOM sanitizer). Existing persisted 8-char
+    // IDs continue to work — this only affects newly-generated IDs.
+    const newId = self.crypto.randomUUID().replace(/-/g, '').substring(0, 16);
     await chrome.storage.local.set({ peerId: newId });
     return newId;
 }
@@ -1930,7 +1937,8 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             sendResponse({ status: 'ok' });
         });
     } else if (message.type === 'REGENERATE_ID') {
-        const newId = self.crypto.randomUUID().substring(0, 8);
+        // Match getPeerId()'s 16-hex-char generation — see comment there.
+        const newId = self.crypto.randomUUID().replace(/-/g, '').substring(0, 16);
         chrome.storage.local.set({ peerId: newId }, () => {
             peerId = newId;
             addLog(`Identity regenerated: ${newId}`, 'success');

From 77203fe8fd5efd95cb0e79d0dc69ed0c081cb8b2 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 08:35:05 +0200
Subject: [PATCH 069/151] fix(extension): drop unused roomPassword field from
 GET_STATUS response
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Defense-in-depth: the field was always undefined in practice (no code
path ever sets currentRoom.password — verified across the full git
history), and no GET_STATUS caller in the codebase reads it. But if a
future change ever populated currentRoom.password, any caller of
GET_STATUS would receive it in cleartext.

Threat surface today is narrow (externally_connectable is not set, no
content script sends GET_STATUS, only the popup uses it), but the field
has no reason to exist — removing it eliminates the future-leak vector
for free.

Backward compatible: no caller reads this field, so removing it is a no-op
for every existing code path.
---
 extension/background.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/extension/background.js b/extension/background.js
index f40fe4c..f8e3f94 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1744,7 +1744,6 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             serverUrl: currentServerUrl,
             version: chrome.runtime.getManifest().version,
             protocolVersion: PROTOCOL_VERSION,
-            roomPassword: currentRoom ? currentRoom.password : null,
             ping: currentPingMs,
             controlMode,
             hostPeerId,

From e23f9ab226410106b93a4d7b352b25caadcc68fc Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Sun, 28 Jun 2026 14:03:59 +0200
Subject: [PATCH 070/151] fix: wire up Regenerate Peer ID button + remove
 arbitrary MAX_CONTROLLERS cap
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Two pre-existing issues surfaced during audit follow-up:

1. popup.js bound elements.regenId but never attached a click handler —
   the 'Regenerate Peer ID' button has been dead UI since it was added
   (verified across full git history). Wired it up to send REGENERATE_ID;
   the background handler already did the right thing (rotate peerId,
   persist, force reconnect). The button is functional (regen ID on
   duplicate-identity errors), not privacy-theater — username is already
   user-changeable in settings, so it stays out of scope.

2. MAX_CONTROLLERS=10 was arbitrary. Payload math (25 controllers ×
   16-char IDs ≈ 500 bytes) is well under the 4KB maxHttpBufferSize,
   controllers.has() is O(1) on a Set, and 'just use everyone mode' is
   not a real answer when a host wants 12 controllers + 3 guests in a
   15-person room. Removed the cap entirely; the only real upper bound
   is MAX_PEERS_PER_ROOM (25).

Added TOAST_ID_REGENERATED to en.json — the i18n fallback merge
(Object.assign({}, enDict, targetDict)) covers the other 14 locales
automatically with English until they're translated.
---
 extension/locales/en.json |  1 +
 extension/popup.js        | 14 ++++++++++++++
 server/index.js           |  9 ---------
 3 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/extension/locales/en.json b/extension/locales/en.json
index 786dd15..416d6b4 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Regenerate your internal ID and reconnect",
   "REGEN_ID_DESC": "Use this if you see \"Duplicate Identity\" errors.",
   "REGEN_ID_OTHER_ISSUE": "Other issue? Open a GitHub Issue",
+  "TOAST_ID_REGENERATED": "Identity regenerated — reconnecting…",
   "LABEL_CONN_STATUS": "Connection Status",
   "LABEL_CONN_STATUS_TOOLTIP": "Current WebSocket connection state",
   "CONN_STATUS_DISCONNECTED": "Disconnected",
diff --git a/extension/popup.js b/extension/popup.js
index d1449f1..6a73613 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -1645,6 +1645,20 @@ elements.clearLogs.addEventListener('click', () => {
     });
 });
 
+if (elements.regenId) {
+    elements.regenId.addEventListener('click', () => {
+        elements.regenId.disabled = true;
+        chrome.runtime.sendMessage({ type: 'REGENERATE_ID' }, (res) => {
+            elements.regenId.disabled = false;
+            if (chrome.runtime.lastError || !res || !res.peerId) {
+                showToast(getMessage('TOAST_ID_REGENERATED') || 'Failed to regenerate identity', 'error');
+                return;
+            }
+            showToast(getMessage('TOAST_ID_REGENERATED') || 'Identity regenerated — reconnecting…', 'success', 3000);
+        });
+    });
+}
+
 elements.copyInvite.addEventListener('click', () => {
     navigator.clipboard.writeText(elements.inviteLink.value).then(() => {
         const original = elements.copyInvite.textContent;
diff --git a/server/index.js b/server/index.js
index 43d50b8..b3966e0 100644
--- a/server/index.js
+++ b/server/index.js
@@ -175,10 +175,6 @@ const SERVER_CAPABILITIES = [CAPABILITIES.HOST_CONTROL, CAPABILITIES.CO_HOST];
 // from generating one broadcast per toggle across all peers.
 const CONTROL_MODE_MIN_INTERVAL_MS = 500;
 
-// Co-Host: max peers (incl. the owner) allowed to drive a 'host-only' room. Bounds
-// the controller set + the CONTROL_MODE payload. Beyond this, just use 'everyone'.
-const MAX_CONTROLLERS = 10;
-
 // Canonical control-mode/role snapshot sent to clients. controllers always includes
 // the owner (hostPeerId). Built in one place so every emit stays consistent.
 function controlModePayload(room) {
@@ -748,11 +744,6 @@ io.on('connection', (socket) => {
 
         if (makeController) {
             if (room.controllers.has(targetPeerId)) return; // no-op
-            if (room.controllers.size >= MAX_CONTROLLERS) {
-                log('ROOM', `Controller cap (${MAX_CONTROLLERS}) reached in ${mapping.roomId.substring(0, 3)}***`);
-                socket.emit(EVENTS.CONTROL_MODE, controlModePayload(room)); // re-sync owner UI
-                return;
-            }
             room.controllers.add(targetPeerId);
         } else {
             if (!room.controllers.has(targetPeerId)) return; // no-op

From adab684ed0ea4e13105a3f0870c9e1ef8bd71c39 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Mon, 29 Jun 2026 01:22:41 +0200
Subject: [PATCH 071/151] perf+fix: debounce seq persistence + role changes,
 null-clear stale peer state

- server: SET_PEER_ROLE now uses the same per-room 500ms debounce as
  SET_CONTROL_MODE (M-4), preventing a buggy/malicious host from
  thrashing the room's UI with rapid promote/demote bursts.
- server: PEER_STATUS relay treats explicit null as 'clear' for
  tabTitle/mediaTitle/currentTime, so the tab-close heartbeat actually
  zeroes out stale state on other peers instead of being silently
  preserved by the clamp fallback.
- background: _persistLastSeq is now trailing-debounced (500ms),
  cutting storage.session IPC writes from one-per-relayed-event to
  one-per-quiet-window in active rooms.
- locales: add missing TOAST_ID_REGENERATED to all 14 non-English
  locales (was blocking locale coverage test on main).
- test: H-1 force-sync demote test now waits out the debounce window
  to reflect real-world UI timing (a host cannot promote, run a
  force-sync, and demote inside 500ms).
---
 extension/background.js      |  8 +++++++-
 extension/locales/de.json    |  1 +
 extension/locales/es.json    |  1 +
 extension/locales/fr.json    |  1 +
 extension/locales/it.json    |  1 +
 extension/locales/ja.json    |  1 +
 extension/locales/ko.json    |  1 +
 extension/locales/nl.json    |  1 +
 extension/locales/pl.json    |  1 +
 extension/locales/pt-BR.json |  1 +
 extension/locales/pt.json    |  1 +
 extension/locales/ru.json    |  1 +
 extension/locales/tr.json    |  1 +
 extension/locales/uk.json    |  1 +
 extension/locales/zh.json    |  1 +
 scripts/test-server-ws.mjs   |  3 +++
 server/index.js              | 23 ++++++++++++++++-------
 17 files changed, 40 insertions(+), 8 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index f8e3f94..33bfd28 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -132,8 +132,14 @@ chrome.runtime.onConnect.addListener((port) => {
     }
 });
 
+let _persistLastSeqTimer = null;
 function _persistLastSeq() {
-    if (storageInitialized) chrome.storage.session.set({ lastSeqBySender });
+    if (!storageInitialized) return;
+    if (_persistLastSeqTimer) clearTimeout(_persistLastSeqTimer);
+    _persistLastSeqTimer = setTimeout(() => {
+        _persistLastSeqTimer = null;
+        chrome.storage.session.set({ lastSeqBySender });
+    }, 500);
 }
 
 // --- Boot Sequence Lock ---
diff --git a/extension/locales/de.json b/extension/locales/de.json
index cefe399..efdee88 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Generiere deine interne ID neu und verbinde dich erneut",
   "REGEN_ID_DESC": "Verwende dies, wenn du Fehler wegen doppelter Identität siehst.",
   "REGEN_ID_OTHER_ISSUE": "Anderes Problem? Öffne ein GitHub Issue",
+  "TOAST_ID_REGENERATED": "Identität neu generiert — Verbindung wird wiederhergestellt…",
   "LABEL_CONN_STATUS": "Verbindungsstatus",
   "LABEL_CONN_STATUS_TOOLTIP": "Aktueller WebSocket-Verbindungsstatus",
   "CONN_STATUS_DISCONNECTED": "Getrennt",
diff --git a/extension/locales/es.json b/extension/locales/es.json
index 8fe004e..7e72723 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Regenerar tu ID interno y volver a conectarte",
   "REGEN_ID_DESC": "Usa esto si ves errores de 'Identidad duplicada'.",
   "REGEN_ID_OTHER_ISSUE": "¿Tienes otro problema? Abre un reporte en GitHub",
+  "TOAST_ID_REGENERATED": "Identidad regenerada — reconectando…",
   "LABEL_CONN_STATUS": "Estado de la conexión",
   "LABEL_CONN_STATUS_TOOLTIP": "Estado actual de la conexión WebSocket",
   "CONN_STATUS_DISCONNECTED": "Desconectado",
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index b51dca7..b550c2e 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Régénérer votre identifiant interne et vous reconnecter",
   "REGEN_ID_DESC": "Utilisez cette option si vous rencontrez des erreurs de 'Double identité'.",
   "REGEN_ID_OTHER_ISSUE": "Autre problème? Ouvrez un Issue GitHub",
+  "TOAST_ID_REGENERATED": "Identité régénérée — reconnexion…",
   "LABEL_CONN_STATUS": "Statut de la connexion",
   "LABEL_CONN_STATUS_TOOLTIP": "Statut actuel de la connexion WebSocket",
   "CONN_STATUS_DISCONNECTED": "Déconnecté",
diff --git a/extension/locales/it.json b/extension/locales/it.json
index 3f8160d..21996c7 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Genera un nuovo ID interno e riconnettiti",
   "REGEN_ID_DESC": "Usa questa opzione se riscontri errori di 'Identità Duplicata'.",
   "REGEN_ID_OTHER_ISSUE": "Hai altri problemi? Apri una segnalazione su GitHub",
+  "TOAST_ID_REGENERATED": "Identità rigenerata — riconnessione…",
   "LABEL_CONN_STATUS": "Stato Connessione",
   "LABEL_CONN_STATUS_TOOLTIP": "Stato attuale della connessione",
   "CONN_STATUS_DISCONNECTED": "Disconnesso",
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index 3b15360..cc3ab9d 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "内部IDを再生成して再接続します",
   "REGEN_ID_DESC": "「Duplicate Identity」（ID重複）エラーが表示される場合に使用します。",
   "REGEN_ID_OTHER_ISSUE": "他の問題？GitHub Issueを開く",
+  "TOAST_ID_REGENERATED": "IDを再生成しました — 再接続中…",
   "LABEL_CONN_STATUS": "接続状態",
   "LABEL_CONN_STATUS_TOOLTIP": "現在のWebSocket接続状態",
   "CONN_STATUS_DISCONNECTED": "切断されました",
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index 7063238..ea573a5 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "내부 ID를 재생성하고 다시 연결합니다",
   "REGEN_ID_DESC": "\"중복된 ID\" 오류가 발생할 경우에 사용하세요.",
   "REGEN_ID_OTHER_ISSUE": "다른 문제? GitHub Issue 열기",
+  "TOAST_ID_REGENERATED": "ID가 재생성되었습니다 — 다시 연결 중…",
   "LABEL_CONN_STATUS": "연결 상태",
   "LABEL_CONN_STATUS_TOOLTIP": "현재 WebSocket 연결 상태",
   "CONN_STATUS_DISCONNECTED": "연결 끊김",
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index edfc97c..6a07ca2 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Genereer uw interne ID opnieuw en maak opnieuw verbinding",
   "REGEN_ID_DESC": "Gebruik dit als u fouten ziet over 'Duplicate Identity'.",
   "REGEN_ID_OTHER_ISSUE": "Ander probleem? Open een GitHub Issue",
+  "TOAST_ID_REGENERATED": "Identiteit opnieuw gegenereerd — opnieuw verbinden…",
   "LABEL_CONN_STATUS": "Verbindingsstatus",
   "LABEL_CONN_STATUS_TOOLTIP": "Huidige WebSocket-verbindingsstatus",
   "CONN_STATUS_DISCONNECTED": "Verbinding verbroken",
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index 0196a94..2cc04be 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Wygeneruj ponownie swój identyfikator i połącz się ponownie",
   "REGEN_ID_DESC": "Użyj tego, jeśli widzisz błędy o zduplikowanej tożsamości.",
   "REGEN_ID_OTHER_ISSUE": "Inny problem? Otwórz Issue na GitHub",
+  "TOAST_ID_REGENERATED": "Tożsamość wygenerowana ponownie — ponowne łączenie…",
   "LABEL_CONN_STATUS": "Status połączenia",
   "LABEL_CONN_STATUS_TOOLTIP": "Bieżący stan połączenia WebSocket",
   "CONN_STATUS_DISCONNECTED": "Rozłączono",
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index 4c64d6e..87ab3bc 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Gerar um novo ID interno e conectar novamente",
   "REGEN_ID_DESC": "Use esta opção se aparecer o erro de 'Identidade duplicada'.",
   "REGEN_ID_OTHER_ISSUE": "Outro problema? Abra um relatório no GitHub",
+  "TOAST_ID_REGENERATED": "Identidade regenerada — reconectando…",
   "LABEL_CONN_STATUS": "Status da conexão",
   "LABEL_CONN_STATUS_TOOLTIP": "Status atual da conexão WebSocket",
   "CONN_STATUS_DISCONNECTED": "Desconectado",
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index 949bf54..4b7fbe3 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Regerar o seu ID interno e voltar a ligar",
   "REGEN_ID_DESC": "Use isto se encontrar erros de 'Identidade Duplicada'.",
   "REGEN_ID_OTHER_ISSUE": "Outro problema? Abra um relatório no GitHub",
+  "TOAST_ID_REGENERATED": "Identidade regenerada — a voltar a ligar…",
   "LABEL_CONN_STATUS": "Estado da Ligação",
   "LABEL_CONN_STATUS_TOOLTIP": "Estado atual da ligação",
   "CONN_STATUS_DISCONNECTED": "Desligado",
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index 0ad6f57..06e1dfd 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Сбросить ваш внутренний идентификатор и переподключиться",
   "REGEN_ID_DESC": "Используйте при появлении ошибок дублирования идентификации.",
   "REGEN_ID_OTHER_ISSUE": "Другая проблема? Откройте Issue на GitHub",
+  "TOAST_ID_REGENERATED": "Идентичность перегенерирована — переподключение…",
   "LABEL_CONN_STATUS": "Статус подключения",
   "LABEL_CONN_STATUS_TOOLTIP": "Текущий статус WebSocket-соединения с сервером",
   "CONN_STATUS_DISCONNECTED": "Отключено",
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index c3a2616..a6caddb 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Dahili kimliğinizi yeniden oluşturun ve tekrar bağlanın",
   "REGEN_ID_DESC": "\"Duplicate Identity\" (Mükerrer Kimlik) hataları görüyorsanız bunu kullanın.",
   "REGEN_ID_OTHER_ISSUE": "Başka bir sorun? GitHub Issue açın",
+  "TOAST_ID_REGENERATED": "Kimlik yeniden oluşturuldu — yeniden bağlanılıyor…",
   "LABEL_CONN_STATUS": "Bağlantı Durumu",
   "LABEL_CONN_STATUS_TOOLTIP": "Mevcut WebSocket bağlantı durumu",
   "CONN_STATUS_DISCONNECTED": "Bağlantı Kesildi",
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
index 551e5a3..6f4466f 100644
--- a/extension/locales/uk.json
+++ b/extension/locales/uk.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "Повторно згенеруйте свій внутрішній ідентифікатор і повторно підключіться",
   "REGEN_ID_DESC": "Використовуйте це, якщо ви бачите помилку \"Дублікати ідентифікатора\".",
   "REGEN_ID_OTHER_ISSUE": "Інша проблема? Відкрийте випуск GitHub",
+  "TOAST_ID_REGENERATED": "Ідентичність перегенеровано — повторне підключення…",
   "LABEL_CONN_STATUS": "Статус підключення",
   "LABEL_CONN_STATUS_TOOLTIP": "Поточний стан підключення WebSocket",
   "CONN_STATUS_DISCONNECTED": "Відключено",
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
index 7e07428..26247fc 100644
--- a/extension/locales/zh.json
+++ b/extension/locales/zh.json
@@ -109,6 +109,7 @@
   "BTN_REGEN_ID_TOOLTIP": "重新生成您的内部 ID 并重新连接",
   "REGEN_ID_DESC": "如果您看到“重复身份”错误，请使用此选项。",
   "REGEN_ID_OTHER_ISSUE": "其他问题？打开 GitHub 问题",
+  "TOAST_ID_REGENERATED": "身份已重新生成 — 正在重新连接…",
   "LABEL_CONN_STATUS": "连接状态",
   "LABEL_CONN_STATUS_TOOLTIP": "当前WebSocket连接状态",
   "CONN_STATUS_DISCONNECTED": "已断开连接",
diff --git a/scripts/test-server-ws.mjs b/scripts/test-server-ws.mjs
index 7e7a0de..5c1186c 100644
--- a/scripts/test-server-ws.mjs
+++ b/scripts/test-server-ws.mjs
@@ -245,6 +245,9 @@ try {
     await w(ho,'force_sync_prepare'); await w(hg,'force_sync_prepare');
     ho._m.length = hc._m.length = hg._m.length = 0;
     // owner demotes the co-host mid-flight — the EXECUTE must still go through.
+    // Wait out the per-room role-change debounce (M-4) so this demote broadcasts:
+    // in real usage the host can't promote, run a force-sync, and demote inside 500ms.
+    await new Promise(r => setTimeout(r, 550));
     s(ho,'set_peer_role',{peerId:'cohost',controller:false});
     await w(hc,'control_mode');
     ho._m.length = hc._m.length = hg._m.length = 0;
diff --git a/server/index.js b/server/index.js
index b3966e0..3a117f8 100644
--- a/server/index.js
+++ b/server/index.js
@@ -411,6 +411,7 @@ io.on('connection', (socket) => {
                             hostPeerId: peerId,
                             controlMode: CONTROL_MODES.EVERYONE,
                             lastControlModeChangeAt: 0, // M-4: per-room debounce for control-mode toggles
+                            lastRoleChangeAt: 0, // M-4: per-room debounce for role promote/demote
                             // Co-Host: peers allowed to drive in 'host-only'. Always includes the owner.
                             controllers: new Set([peerId]),
                             // H-1: peerId of the in-flight force-sync initiator. Lets a demoted
@@ -585,10 +586,10 @@ io.on('connection', (socket) => {
                     room.peerData.set(socket.id, { 
                         ...existing,
                         username:      data.username      !== undefined ? (clamp(data.username, 30)   ?? existing.username)      : existing.username,
-                        tabTitle:      data.tabTitle      !== undefined ? (clamp(data.tabTitle, 100)  ?? existing.tabTitle)      : existing.tabTitle,
-                        mediaTitle:    data.mediaTitle    !== undefined ? (clamp(data.mediaTitle, 100) ?? existing.mediaTitle)   : existing.mediaTitle,
+                        tabTitle:      data.tabTitle      === null ? null : (data.tabTitle      !== undefined ? (clamp(data.tabTitle, 100)  ?? existing.tabTitle)      : existing.tabTitle),
+                        mediaTitle:    data.mediaTitle    === null ? null : (data.mediaTitle    !== undefined ? (clamp(data.mediaTitle, 100) ?? existing.mediaTitle)   : existing.mediaTitle),
                         playbackState: data.playbackState !== undefined ? (validState(data.playbackState) ?? existing.playbackState) : existing.playbackState,
-                        currentTime:   data.currentTime   !== undefined ? (clampNum(data.currentTime, 0, 86400) ?? existing.currentTime)   : existing.currentTime,
+                        currentTime:   data.currentTime   === null ? null : (data.currentTime   !== undefined ? (clampNum(data.currentTime, 0, 86400) ?? existing.currentTime)   : existing.currentTime),
                         volume:        data.volume        !== undefined ? (clampNum(data.volume, 0, 1) ?? existing.volume)                 : existing.volume,
                         muted:         data.muted         !== undefined ? (validBool(data.muted) ?? existing.muted)                       : existing.muted,
                         desynced:      data.desynced      !== undefined ? (validBool(data.desynced) === true) : (existing.desynced || false),
@@ -599,12 +600,12 @@ io.on('connection', (socket) => {
                     const relayPayload = {
                         senderId:        mapping.peerId,
                         seq:             clampNum(data.seq, 0, Number.MAX_SAFE_INTEGER),
-                        currentTime:     clampNum(data.currentTime, 0, 86400),
+                        currentTime:     data.currentTime === null ? null : clampNum(data.currentTime, 0, 86400),
                         targetTime:      clampNum(data.targetTime, 0, 86400),
                         playbackState:   validState(data.playbackState),
                         username:        clamp(data.username, 30),
-                        tabTitle:        clamp(data.tabTitle, 100),
-                        mediaTitle:      clamp(data.mediaTitle, 100),
+                        tabTitle:        data.tabTitle === null ? null : clamp(data.tabTitle, 100),
+                        mediaTitle:      data.mediaTitle === null ? null : clamp(data.mediaTitle, 100),
                         volume:          clampNum(data.volume, 0, 1),
                         muted:           validBool(data.muted),
                         desynced:        validBool(data.desynced),
@@ -742,6 +743,13 @@ io.on('connection', (socket) => {
         const targetPresent = Array.from(room.peerData.values()).some(d => d.peerId === targetPeerId);
         if (!targetPresent) return;
 
+        const now = Date.now();
+        if (now - (room.lastRoleChangeAt || 0) < CONTROL_MODE_MIN_INTERVAL_MS) {
+            log('ROOM', `Role change debounced in ${mapping.roomId.substring(0, 3)}***`);
+            socket.emit(EVENTS.CONTROL_MODE, controlModePayload(room));
+            return;
+        }
+
         if (makeController) {
             if (room.controllers.has(targetPeerId)) return; // no-op
             room.controllers.add(targetPeerId);
@@ -749,7 +757,8 @@ io.on('connection', (socket) => {
             if (!room.controllers.has(targetPeerId)) return; // no-op
             room.controllers.delete(targetPeerId);
         }
-        room.lastActivity = Date.now();
+        room.lastRoleChangeAt = now;
+        room.lastActivity = now;
         io.to(mapping.roomId).emit(EVENTS.CONTROL_MODE, controlModePayload(room));
         log('ROOM', `Peer ${targetPeerId} ${makeController ? 'promoted to' : 'demoted from'} controller in ${mapping.roomId.substring(0, 3)}***`);
     });

From 1f48e9df47659310c6567b71078c44cf5b630594 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Mon, 29 Jun 2026 02:43:28 +0200
Subject: [PATCH 072/151] fix(popup): polish custom-server, host-control card &
 co-host UX
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Manual Connect: split the server picker into its own inset panel,
  visually separated from the Room ID / Password fields (they were
  welded together in one flat list).
- Custom server URL: stop auto-prepending ws:// — default to wss://
  for real hosts, ws:// only for localhost/127.0.0.1 (matches what
  the background already enforces; the displayed URL no longer lies).
- Host Control card: replace the raw native checkbox with the proper
  .toggle-switch slider used in Options; move the toggle row from a
  <label> to a <div> to avoid an illegally nested label.
- Co-host discoverability: owner-only hint in the Host Control card
  pointing to the participant list (new NOTICE_COHOST_HINT across all
  15 locales). Shown only when actionable: owner + co-host-capable
  relay + host-only active.
- Peer row: group right-side badges/actions into one container so they
  no longer scatter via space-between or collide with long names;
  restyle the give/revoke button (padding, weight, hover fill, tooltip).
- Gate promote/demote (and role badges) on host-only mode being ON,
  in addition to the existing owner-privilege check — roles are moot
  in 'everyone' mode, so no badge/button noise there.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/locales/de.json    |  1 +
 extension/locales/en.json    |  1 +
 extension/locales/es.json    |  1 +
 extension/locales/fr.json    |  1 +
 extension/locales/it.json    |  1 +
 extension/locales/ja.json    |  1 +
 extension/locales/ko.json    |  1 +
 extension/locales/nl.json    |  1 +
 extension/locales/pl.json    |  1 +
 extension/locales/pt-BR.json |  1 +
 extension/locales/pt.json    |  1 +
 extension/locales/ru.json    |  1 +
 extension/locales/tr.json    |  1 +
 extension/locales/uk.json    |  1 +
 extension/locales/zh.json    |  1 +
 extension/popup.html         | 28 ++++++++++++-------
 extension/popup.js           | 52 +++++++++++++++++++++++++++---------
 17 files changed, 73 insertions(+), 22 deletions(-)

diff --git a/extension/locales/de.json b/extension/locales/de.json
index efdee88..22fdb35 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Festlegen, wer die Wiedergabe in diesem Raum steuern darf",
   "LABEL_HOST_ONLY_TOGGLE": "Nur ich darf die Wiedergabe steuern",
   "NOTICE_HOST_CONTROLS": "Der Host steuert die Wiedergabe für alle.",
+  "NOTICE_COHOST_HINT": "Tipp: Gib einzelnen Teilnehmern unten in der Teilnehmerliste die Steuerung.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Gast",
   "BADGE_CONTROLLER": "Controller",
diff --git a/extension/locales/en.json b/extension/locales/en.json
index 416d6b4..5e7ffe2 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Restrict who can control playback in this room",
   "LABEL_HOST_ONLY_TOGGLE": "Only I can control playback",
   "NOTICE_HOST_CONTROLS": "The host controls playback for everyone.",
+  "NOTICE_COHOST_HINT": "Tip: grant control to individual viewers in the participant list below.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Guest",
   "BADGE_CONTROLLER": "Controller",
diff --git a/extension/locales/es.json b/extension/locales/es.json
index 7e72723..95b5e0b 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Restringir quién puede controlar la reproducción en esta sala",
   "LABEL_HOST_ONLY_TOGGLE": "Solo yo puedo controlar la reproducción",
   "NOTICE_HOST_CONTROLS": "El anfitrión controla la reproducción para todos.",
+  "NOTICE_COHOST_HINT": "Consejo: concede el control a usuarios concretos en la lista de participantes de abajo.",
   "BADGE_HOST": "Anfitrión",
   "BADGE_GUEST": "Invitado",
   "BADGE_CONTROLLER": "Controlador",
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index b550c2e..8c2dbba 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Définir qui peut contrôler la lecture dans ce salon",
   "LABEL_HOST_ONLY_TOGGLE": "Moi seul peux contrôler la lecture",
   "NOTICE_HOST_CONTROLS": "L'hôte contrôle la lecture pour tout le monde.",
+  "NOTICE_COHOST_HINT": "Astuce : donnez le contrôle à des participants précis dans la liste ci-dessous.",
   "BADGE_HOST": "Hôte",
   "BADGE_GUEST": "Invité",
   "BADGE_CONTROLLER": "Contrôleur",
diff --git a/extension/locales/it.json b/extension/locales/it.json
index 21996c7..6734f1e 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Limita chi può controllare la riproduzione in questa stanza",
   "LABEL_HOST_ONLY_TOGGLE": "Solo io posso controllare la riproduzione",
   "NOTICE_HOST_CONTROLS": "L'host controlla la riproduzione per tutti.",
+  "NOTICE_COHOST_HINT": "Suggerimento: concedi il controllo ai singoli partecipanti nell'elenco qui sotto.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Ospite",
   "BADGE_CONTROLLER": "Controller",
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index cc3ab9d..12c4bf7 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "このルームで再生を操作できる人を制限します",
   "LABEL_HOST_ONLY_TOGGLE": "再生を操作できるのは自分だけ",
   "NOTICE_HOST_CONTROLS": "ホストが全員の再生を操作します。",
+  "NOTICE_COHOST_HINT": "ヒント: 下の参加者リストで個別の参加者に操作権限を付与できます。",
   "BADGE_HOST": "ホスト",
   "BADGE_GUEST": "ゲスト",
   "BADGE_CONTROLLER": "操作権あり",
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index ea573a5..8c648f0 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "이 방에서 재생을 제어할 수 있는 사람 제한",
   "LABEL_HOST_ONLY_TOGGLE": "나만 재생을 제어할 수 있음",
   "NOTICE_HOST_CONTROLS": "호스트가 모두의 재생을 제어합니다.",
+  "NOTICE_COHOST_HINT": "팁: 아래 참가자 목록에서 개별 참가자에게 제어 권한을 부여하세요.",
   "BADGE_HOST": "호스트",
   "BADGE_GUEST": "게스트",
   "BADGE_CONTROLLER": "제어자",
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index 6a07ca2..c54da24 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Bepaal wie de weergave in deze kamer mag bedienen",
   "LABEL_HOST_ONLY_TOGGLE": "Alleen ik mag de weergave bedienen",
   "NOTICE_HOST_CONTROLS": "De host bedient de weergave voor iedereen.",
+  "NOTICE_COHOST_HINT": "Tip: geef afzonderlijke deelnemers de besturing in de lijst hieronder.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Gast",
   "BADGE_CONTROLLER": "Bediener",
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index 2cc04be..b061ea9 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Określ, kto może sterować odtwarzaniem w tym pokoju",
   "LABEL_HOST_ONLY_TOGGLE": "Tylko ja mogę sterować odtwarzaniem",
   "NOTICE_HOST_CONTROLS": "Host steruje odtwarzaniem dla wszystkich.",
+  "NOTICE_COHOST_HINT": "Wskazówka: przyznaj sterowanie wybranym uczestnikom na liście poniżej.",
   "BADGE_HOST": "Host",
   "BADGE_GUEST": "Gość",
   "BADGE_CONTROLLER": "Sterujący",
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index 87ab3bc..2165844 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Restringir quem pode controlar a reprodução nesta sala",
   "LABEL_HOST_ONLY_TOGGLE": "Somente eu posso controlar a reprodução",
   "NOTICE_HOST_CONTROLS": "O anfitrião controla a reprodução para todos.",
+  "NOTICE_COHOST_HINT": "Dica: conceda o controle a participantes específicos na lista abaixo.",
   "BADGE_HOST": "Anfitrião",
   "BADGE_GUEST": "Convidado",
   "BADGE_CONTROLLER": "Controlador",
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index 4b7fbe3..2b647f4 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Restringir quem pode controlar a reprodução nesta sala",
   "LABEL_HOST_ONLY_TOGGLE": "Só eu posso controlar a reprodução",
   "NOTICE_HOST_CONTROLS": "O anfitrião controla a reprodução para todos.",
+  "NOTICE_COHOST_HINT": "Dica: conceda o controlo a participantes específicos na lista abaixo.",
   "BADGE_HOST": "Anfitrião",
   "BADGE_GUEST": "Convidado",
   "BADGE_CONTROLLER": "Controlador",
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index 06e1dfd..f3451b5 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Ограничить, кто может управлять воспроизведением в этой комнате",
   "LABEL_HOST_ONLY_TOGGLE": "Только я могу управлять воспроизведением",
   "NOTICE_HOST_CONTROLS": "Ведущий управляет воспроизведением для всех.",
+  "NOTICE_COHOST_HINT": "Совет: предоставьте управление отдельным участникам в списке ниже.",
   "BADGE_HOST": "Ведущий",
   "BADGE_GUEST": "Гость",
   "BADGE_CONTROLLER": "Управляющий",
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index a6caddb..6f53a50 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Bu odada oynatmayı kimin kontrol edebileceğini belirleyin",
   "LABEL_HOST_ONLY_TOGGLE": "Oynatmayı yalnızca ben kontrol edebilirim",
   "NOTICE_HOST_CONTROLS": "Oynatmayı herkes için sunucu kontrol eder.",
+  "NOTICE_COHOST_HINT": "İpucu: aşağıdaki katılımcı listesinde tek tek katılımcılara kontrol verin.",
   "BADGE_HOST": "Sunucu",
   "BADGE_GUEST": "Misafir",
   "BADGE_CONTROLLER": "Kontrolcü",
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
index 6f4466f..9088b9b 100644
--- a/extension/locales/uk.json
+++ b/extension/locales/uk.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "Обмежити, хто може керувати відтворенням у цій кімнаті",
   "LABEL_HOST_ONLY_TOGGLE": "Лише я можу керувати відтворенням",
   "NOTICE_HOST_CONTROLS": "Ведучий керує відтворенням для всіх.",
+  "NOTICE_COHOST_HINT": "Порада: надайте керування окремим учасникам у списку нижче.",
   "BADGE_HOST": "Ведучий",
   "BADGE_GUEST": "Гість",
   "BADGE_CONTROLLER": "Керуючий",
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
index 26247fc..8aba7be 100644
--- a/extension/locales/zh.json
+++ b/extension/locales/zh.json
@@ -48,6 +48,7 @@
   "LABEL_HOST_CONTROL_TOOLTIP": "限制谁可以在此房间中控制播放",
   "LABEL_HOST_ONLY_TOGGLE": "仅我可以控制播放",
   "NOTICE_HOST_CONTROLS": "由主持人为所有人控制播放。",
+  "NOTICE_COHOST_HINT": "提示：在下方的参与者列表中将控制权授予单个参与者。",
   "BADGE_HOST": "主持人",
   "BADGE_GUEST": "访客",
   "BADGE_CONTROLLER": "控制者",
diff --git a/extension/popup.html b/extension/popup.html
index 3d36a4c..c6a50ad 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -402,14 +402,18 @@
             <details style="margin-bottom: 12px; background: var(--card); border: 1px solid #334155; border-radius: 8px; padding: 8px;">
                 <summary style="font-size: 11px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; cursor: pointer; outline: none;" data-i18n="MANUAL_CONNECT_HEADER">Manual Connect / Advanced</summary>
                 <div style="margin-top: 12px;">
-            <div class="form-group">
-                <label title="Select which KoalaSync server to use" data-i18n="LABEL_SERVER">Server</label>
-                <div style="display:flex; gap:4px; margin-bottom:8px;">
-                    <button id="serverOfficial" class="tab-btn active" style="flex:1; padding:6px; font-size:11px;" data-i18n="BTN_SERVER_OFFICIAL" data-i18n-title="BTN_SERVER_OFFICIAL_TOOLTIP" title="Use the official reliable server">Official</button>
-                    <button id="serverCustom" class="tab-btn" style="flex:1; padding:6px; font-size:11px;" data-i18n="BTN_SERVER_CUSTOM" data-i18n-title="BTN_SERVER_CUSTOM_TOOLTIP" title="Connect to your own self-hosted server">Custom</button>
+            <!-- Server selection — its own concern, kept visually separate from the room fields. -->
+            <div style="background: var(--bg); border: 1px solid #334155; border-radius: 8px; padding: 10px; margin-bottom: 14px;">
+                <div class="form-group" style="margin-bottom:0;">
+                    <label title="Select which KoalaSync server to use" data-i18n="LABEL_SERVER">Server</label>
+                    <div style="display:flex; gap:4px; margin-bottom:0;">
+                        <button id="serverOfficial" class="tab-btn active" style="flex:1; padding:6px; font-size:11px;" data-i18n="BTN_SERVER_OFFICIAL" data-i18n-title="BTN_SERVER_OFFICIAL_TOOLTIP" title="Use the official reliable server">Official</button>
+                        <button id="serverCustom" class="tab-btn" style="flex:1; padding:6px; font-size:11px;" data-i18n="BTN_SERVER_CUSTOM" data-i18n-title="BTN_SERVER_CUSTOM_TOOLTIP" title="Connect to your own self-hosted server">Custom</button>
+                    </div>
+                    <input type="text" id="serverUrl" data-i18n-placeholder="PLACEHOLDER_SERVER_URL" placeholder="wss://your-server:3000" style="display:none; margin-top:8px;">
                 </div>
-                <input type="text" id="serverUrl" data-i18n-placeholder="PLACEHOLDER_SERVER_URL" placeholder="wss://your-server:3000" style="display:none;">
             </div>
+            <!-- Room credentials — distinct group below the server picker. -->
             <div class="form-group">
                 <label title="The unique identifier for your sync room" data-i18n="LABEL_ROOM_ID" data-i18n-title="LABEL_ROOM_ID_TOOLTIP">Room ID</label>
                 <input type="text" id="roomId" data-i18n-placeholder="PLACEHOLDER_ROOM_ID" data-i18n-title="PLACEHOLDER_ROOM_ID_TOOLTIP" placeholder="Enter Room ID" title="The unique ID of the room you want to join">
@@ -455,10 +459,14 @@
                     <label style="margin:0;" title="Restrict who can control playback in this room" data-i18n="LABEL_HOST_CONTROL" data-i18n-title="LABEL_HOST_CONTROL_TOOLTIP">Host Control</label>
                     <span id="hostRoleBadge" style="font-size:10px; font-weight:700; text-transform:uppercase; padding:2px 8px; border-radius:8px; background:var(--accent); color:#fff;"></span>
                 </div>
-                <label id="hostControlToggleRow" style="display:none; align-items:center; gap:8px; margin-top:10px; cursor:pointer; font-size:12px; color:var(--text-muted);">
-                    <input type="checkbox" id="hostControlToggle">
-                    <span data-i18n="LABEL_HOST_ONLY_TOGGLE">Only I can control playback</span>
-                </label>
+                <div id="hostControlToggleRow" style="display:none; align-items:center; justify-content:space-between; gap:12px; margin-top:12px;">
+                    <span style="font-size:12px; color:var(--text); line-height:1.3;" data-i18n="LABEL_HOST_ONLY_TOGGLE">Only I can control playback</span>
+                    <label class="toggle-switch" style="flex:none;">
+                        <input type="checkbox" id="hostControlToggle">
+                        <span class="slider"></span>
+                    </label>
+                </div>
+                <div id="hostControlCohostHint" style="display:none; margin-top:10px; padding-top:10px; border-top:1px solid #334155; font-size:11px; color:var(--text-muted); line-height:1.4;" data-i18n="NOTICE_COHOST_HINT">Tip: grant control to individual viewers in the participant list below.</div>
                 <div id="hostControlGuestNote" style="display:none; margin-top:10px; font-size:12px; color:var(--text-muted);" data-i18n="NOTICE_HOST_CONTROLS">The host controls playback for everyone.</div>
             </div>
 
diff --git a/extension/popup.js b/extension/popup.js
index 6a73613..edaef4a 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -46,6 +46,7 @@ const elements = {
     hostControlToggleRow: document.getElementById('hostControlToggleRow'),
     hostControlToggle: document.getElementById('hostControlToggle'),
     hostControlGuestNote: document.getElementById('hostControlGuestNote'),
+    hostControlCohostHint: document.getElementById('hostControlCohostHint'),
     activeRoomId: document.getElementById('activeRoomId'),
     activeServer: document.getElementById('activeServer'),
     peerListSync: document.getElementById('peerListSync'),
@@ -361,6 +362,11 @@ function updateHostControlUI(state) {
     if (elements.hostControlToggleRow) elements.hostControlToggleRow.style.display = amHost ? 'flex' : 'none';
     if (elements.hostControlToggle) elements.hostControlToggle.checked = hostOnly;
     if (elements.hostControlGuestNote) elements.hostControlGuestNote.style.display = (!amController && hostOnly) ? 'block' : 'none';
+    // Owner-only discoverability hint: co-hosting is granted down in the peer list,
+    // which isn't obvious from this card. Only show it when it's actionable — owner,
+    // relay supports co-host, and the room is locked to host-only (the buttons only
+    // render in that mode).
+    if (elements.hostControlCohostHint) elements.hostControlCohostHint.style.display = (amHost && !!s.coHostSupported && hostOnly) ? 'block' : 'none';
 
     // Only a non-controller is locked out of the remote controls.
     hcmGuestLocked = (!amController && hostOnly);
@@ -670,6 +676,11 @@ function updatePeerList(peers) {
 
             header.appendChild(nameSpan);
 
+            // Right-side badges + actions, kept in one group so they sit together
+            // on the right instead of being scattered by the header's space-between.
+            const rightGroup = document.createElement('div');
+            rightGroup.style.cssText = 'display:flex; align-items:center; gap:6px; flex-shrink:0;';
+
             // Volume Icon (Top Right)
             if (p.volume !== undefined && p.volume !== null) {
                 const volIcon = document.createElement('div');
@@ -683,7 +694,7 @@ function updatePeerList(peers) {
                 const you = document.createElement('span');
                 you.style.cssText = 'font-size:10px; color:var(--accent); font-weight:bold;';
                 you.textContent = getMessage('LABEL_YOU') || 'YOU';
-                header.appendChild(you);
+                rightGroup.appendChild(you);
             }
 
             // Host Control Mode: show "Solo" badge for peers watching on their own.
@@ -693,13 +704,14 @@ function updatePeerList(peers) {
                 const soloText = getMessage('BADGE_DESYNCED') || 'Solo';
                 solo.textContent = soloText;
                 solo.title = getMessage('TOOLTIP_PEER_DESYNCED') || soloText;
-                header.appendChild(solo);
+                rightGroup.appendChild(solo);
             }
 
-            // Co-Host: role badges + the owner's promote/demote control. Shown when the
-            // feature is active and either the room is host-only or we're the owner
-            // (so a guest in a normal room sees no role noise).
-            const showRoles = !!hcmOwnerPeerId && (hcmRoomIsHostOnly || hcmAmOwner);
+            // Co-Host: role badges + the owner's promote/demote control. Only meaningful
+            // once the room is locked to host-only — in 'everyone' mode anyone can already
+            // control, so roles are moot and we show nothing (no badge/button noise).
+            // The promote/demote button additionally requires owner privileges (below).
+            const showRoles = !!hcmOwnerPeerId && hcmRoomIsHostOnly;
             if (showRoles) {
                 const isOwner = pId === hcmOwnerPeerId;
                 const isController = !isOwner && hcmControllers.includes(pId);
@@ -707,20 +719,32 @@ function updatePeerList(peers) {
                     const roleBadge = document.createElement('span');
                     roleBadge.style.cssText = 'font-size:10px; color:#fff; background:var(--accent); padding:2px 6px; border-radius:6px; font-weight:600;';
                     roleBadge.textContent = isOwner ? (getMessage('BADGE_HOST') || 'Host') : (getMessage('BADGE_CONTROLLER') || 'Controller');
-                    header.appendChild(roleBadge);
+                    rightGroup.appendChild(roleBadge);
                 }
                 // Owner can promote/demote any non-owner peer.
                 if (hcmAmOwner && hcmCoHostSupported && !isOwner) {
                     const btn = document.createElement('button');
-                    btn.style.cssText = 'font-size:10px; padding:2px 8px; border-radius:6px; cursor:pointer; border:1px solid var(--accent); background:transparent; color:var(--accent); white-space:nowrap;';
-                    btn.textContent = isController ? (getMessage('BTN_REVOKE_CONTROL') || 'Revoke') : (getMessage('BTN_GIVE_CONTROL') || 'Give control');
+                    const revoke = isController;
+                    btn.style.cssText = `font-size:10px; padding:3px 9px; border-radius:6px; cursor:pointer; white-space:nowrap; font-weight:600; transition:background .15s,color .15s; border:1px solid ${revoke ? 'var(--text-muted)' : 'var(--accent)'}; background:transparent; color:${revoke ? 'var(--text-muted)' : 'var(--accent)'};`;
+                    btn.textContent = revoke ? (getMessage('BTN_REVOKE_CONTROL') || 'Revoke') : (getMessage('BTN_GIVE_CONTROL') || 'Give control');
+                    btn.title = revoke ? (getMessage('BTN_REVOKE_CONTROL') || 'Revoke') : (getMessage('BTN_GIVE_CONTROL') || 'Give control');
+                    btn.addEventListener('mouseenter', () => {
+                        btn.style.background = revoke ? 'var(--text-muted)' : 'var(--accent)';
+                        btn.style.color = '#fff';
+                    });
+                    btn.addEventListener('mouseleave', () => {
+                        btn.style.background = 'transparent';
+                        btn.style.color = revoke ? 'var(--text-muted)' : 'var(--accent)';
+                    });
                     btn.addEventListener('click', () => {
                         chrome.runtime.sendMessage({ type: 'SET_PEER_ROLE', peerId: pId, controller: !isController }, () => {});
                     });
-                    header.appendChild(btn);
+                    rightGroup.appendChild(btn);
                 }
             }
 
+            if (rightGroup.childNodes.length) header.appendChild(rightGroup);
+
             peerItem.appendChild(header);
 
             // Media Info
@@ -1273,7 +1297,11 @@ if (elements.langSelector) {
 elements.serverUrl.addEventListener('change', () => {
     let url = elements.serverUrl.value.trim();
     if (url && !url.includes('://')) {
-        url = 'ws://' + url;
+        // Default to secure wss:// — plain ws:// is only valid for a local relay
+        // (and the background rejects/upgrades ws:// for any remote host anyway).
+        const host = url.split('/')[0].split(':')[0].toLowerCase();
+        const isLocal = host === 'localhost' || host === '127.0.0.1';
+        url = (isLocal ? 'ws://' : 'wss://') + url;
         elements.serverUrl.value = url;
         chrome.storage.local.set({ serverUrl: url });
     }
@@ -1390,7 +1418,7 @@ elements.joinBtn.addEventListener('click', async () => {
     }
     if (useCustom && serverUrl) {
         try {
-            const urlToCheck = serverUrl.includes('://') ? serverUrl : 'ws://' + serverUrl;
+            const urlToCheck = serverUrl.includes('://') ? serverUrl : 'wss://' + serverUrl;
             new URL(urlToCheck);
         } catch (_e) {
             showError(getMessage('ERR_INVALID_SERVER_URL'));

From 717d37c6937ad146aafff94f8ad80be3575062d7 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Mon, 29 Jun 2026 12:50:49 +0200
Subject: [PATCH 073/151] Prepare v2.5.0 website release notes

---
 docs/CHANGELOG.md          | 13 +++++++++++++
 website/locales/de.json    |  2 ++
 website/locales/en.json    |  2 ++
 website/locales/es.json    |  2 ++
 website/locales/fr.json    |  2 ++
 website/locales/it.json    |  2 ++
 website/locales/ja.json    |  2 ++
 website/locales/ko.json    |  2 ++
 website/locales/nl.json    |  2 ++
 website/locales/pl.json    |  2 ++
 website/locales/pt-BR.json |  2 ++
 website/locales/pt.json    |  2 ++
 website/locales/ru.json    |  2 ++
 website/locales/tr.json    |  2 ++
 website/locales/uk.json    |  2 ++
 website/locales/zh.json    |  2 ++
 website/template.html      |  9 +++++++++
 17 files changed, 52 insertions(+)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 259e29c..e106a17 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -4,6 +4,19 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ---
 
+## [v2.5.0] — 2026-06-29
+
+### Added
+- **Extension + Relay: Host Control Mode** — Room owners can now switch a room between open playback control and host-controlled playback. In host-only mode, guests stay synchronized but their local play, pause, and seek actions are not rebroadcast to the room.
+- **Backward-compatible Host Control rollout** — The extension only shows Host Control when the connected relay supports it, so users on older self-hosted servers do not see controls that cannot work yet.
+- **Extension: Clear host and guest states** — The popup shows the current control mode, host status, peer roles, and localized guest guidance so participants understand when playback is controlled by the host.
+- **Website: FAQ clarification for streaming access** — The landing page and FAQ structured data now state clearly that KoalaSync does not stream, host, share, or bypass access to video content. Every participant watches locally and needs their own access to services such as Netflix.
+
+### Changed
+- **Playback sync now follows the room's control setting** — When Host Control is enabled, only the host can drive room-wide playback changes; guests can still watch in sync without accidentally changing playback for everyone.
+
+---
+
 ## [v2.4.6] — 2026-06-23
 
 ### Fixed
diff --git a/website/locales/de.json b/website/locales/de.json
index 25be927..06c8e57 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Alles, was du über synchrones Videoschauen mit Freunden wissen musst.",
   "FAQ_Q1": "Kann ich Netflix, Emby oder Jellyfin synchron mit Freunden schauen?",
   "FAQ_A1": "Ja! KoalaSync funktioniert mit Netflix, YouTube, Twitch und jeder Website mit einem HTML5-Videoplayer — einschließlich Emby, Jellyfin und eigenen Medienservern. Installiere die Erweiterung, erstelle einen Raum, teile den Einladungslink und alle schauen perfekt synchron.",
+  "FAQ_Q_VIDEO_ACCESS": "Streamt KoalaSync das Video an meine Freunde?",
+  "FAQ_A_VIDEO_ACCESS": "Nein. KoalaSync streamt, hostet oder teilt keine Videoinhalte und umgeht keinen Zugang. Jede Person schaut das Video lokal im eigenen Browser und braucht selbst Zugriff auf die jeweilige Website oder den Streamingdienst, zum Beispiel ein eigenes Netflix-Konto. KoalaSync synchronisiert nur Aktionen wie Play, Pause und Spulen.",
   "FAQ_Q2": "Ist KoalaSync eine kostenlose Alternative zu Teleparty?",
   "FAQ_A2": "100 % kostenlos und Open Source unter der MIT-Lizenz. Keine Premium-Stufen, keine gesperrten Funktionen, keine Werbung. Anders als Teleparty läuft KoalaSyncs Relay-Server ausschließlich im RAM — ohne Datensammlung und ohne Benutzerkonten.",
   "FAQ_Q3": "Funktioniert KoalaSync mit Emby, Jellyfin und eigenen Medienservern?",
diff --git a/website/locales/en.json b/website/locales/en.json
index fb1724a..3024053 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Everything you need to know about watching videos together in perfect sync.",
   "FAQ_Q1": "Can I watch Netflix, Emby or Jellyfin together in sync with friends?",
   "FAQ_A1": "Yes! KoalaSync works on Netflix, YouTube, Twitch and any website with an HTML5 video player — including Emby, Jellyfin and self-hosted media servers. Install the extension, create a room, share the invite link, and everyone watches in perfect sync.",
+  "FAQ_Q_VIDEO_ACCESS": "Does KoalaSync stream the video to my friends?",
+  "FAQ_A_VIDEO_ACCESS": "No. KoalaSync does not stream, host, share, or bypass access to video content. Everyone watches the video locally in their own browser and needs their own access to the website or streaming service, such as their own Netflix account. KoalaSync only synchronizes playback actions like play, pause, and seeking.",
   "FAQ_Q2": "Is KoalaSync a free alternative to Teleparty?",
   "FAQ_A2": "100% free and open source under the MIT License. No premium tiers, no locked features, no ads — everything is included. Unlike Teleparty, KoalaSync's relay server is RAM-only with zero data collection or user accounts required.",
   "FAQ_Q3": "Does KoalaSync work with Emby, Jellyfin and self-hosted media servers?",
diff --git a/website/locales/es.json b/website/locales/es.json
index 337d24f..7f57203 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Todo lo que necesitas saber para ver vídeos en perfecta sincronía.",
   "FAQ_Q1": "¿Puedo ver Netflix, Emby o Jellyfin sincronizado con amigos?",
   "FAQ_A1": "¡Sí! KoalaSync funciona en Netflix, YouTube, Twitch y cualquier web con reproductor HTML5, incluyendo Emby, Jellyfin y servidores multimedia propios. Instala la extensión, crea una sala, comparte el enlace y todos veréis lo mismo al mismo tiempo.",
+  "FAQ_Q_VIDEO_ACCESS": "¿KoalaSync transmite el video a mis amigos?",
+  "FAQ_A_VIDEO_ACCESS": "No. KoalaSync no transmite, aloja, comparte ni evita el acceso al contenido de video. Cada persona ve el video localmente en su propio navegador y necesita su propio acceso al sitio web o servicio de streaming, por ejemplo su propia cuenta de Netflix. KoalaSync solo sincroniza acciones de reproducción como reproducir, pausar y avanzar o retroceder.",
   "FAQ_Q2": "¿Es KoalaSync una alternativa gratuita a Teleparty?",
   "FAQ_A2": "Es 100% gratuito y de código abierto (Licencia MIT). Sin suscripciones, sin funciones bloqueadas y sin anuncios. A diferencia de Teleparty, el servidor de KoalaSync solo usa RAM: no hay bases de datos ni cuentas de usuario.",
   "FAQ_Q3": "¿Funciona KoalaSync con Emby, Jellyfin y servidores propios?",
diff --git a/website/locales/fr.json b/website/locales/fr.json
index 45948a6..f24715b 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Tout ce que vous devez savoir pour regarder des vidéos en parfaite synchronisation.",
   "FAQ_Q1": "Puis-je regarder Netflix, Emby ou Jellyfin en synchronisation avec des amis ?",
   "FAQ_A1": "Oui ! KoalaSync fonctionne avec Netflix, YouTube, Twitch et tout site avec un lecteur vidéo HTML5 — y compris Emby, Jellyfin et les serveurs multimédia auto-hébergés. Installez l'extension, créez un salon, partagez le lien et regardez en parfaite synchronisation.",
+  "FAQ_Q_VIDEO_ACCESS": "KoalaSync diffuse-t-il la vidéo à mes amis ?",
+  "FAQ_A_VIDEO_ACCESS": "Non. KoalaSync ne diffuse, n’héberge, ne partage et ne contourne aucun accès aux contenus vidéo. Chaque personne regarde la vidéo localement dans son propre navigateur et doit disposer de son propre accès au site ou au service de streaming, par exemple son propre compte Netflix. KoalaSync synchronise uniquement les actions de lecture comme lecture, pause et recherche dans la vidéo.",
   "FAQ_Q2": "KoalaSync est-il une alternative gratuite à Teleparty ?",
   "FAQ_A2": "100 % gratuit et open source sous licence MIT. Aucun niveau premium, aucune fonctionnalité verrouillée, aucune publicité. Contrairement à Teleparty, le serveur relay de KoalaSync fonctionne uniquement en RAM — sans collecte de données ni comptes utilisateur.",
   "FAQ_Q3": "KoalaSync fonctionne-t-il avec Emby, Jellyfin et les serveurs multimédia auto-hébergés ?",
diff --git a/website/locales/it.json b/website/locales/it.json
index 757c64c..f98e89c 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Tutto quello che c'è da sapere per guardare video in perfetta sincronia.",
   "FAQ_Q1": "Posso guardare Netflix o YouTube in sincronia?",
   "FAQ_A1": "Certamente! KoalaSync funziona su Netflix, YouTube, Twitch e qualsiasi sito con video HTML5. Basta installare l'estensione, creare una stanza e condividere il link.",
+  "FAQ_Q_VIDEO_ACCESS": "KoalaSync trasmette il video ai miei amici?",
+  "FAQ_A_VIDEO_ACCESS": "No. KoalaSync non trasmette, ospita, condivide o aggira l’accesso ai contenuti video. Ogni persona guarda il video localmente nel proprio browser e deve avere il proprio accesso al sito o al servizio di streaming, ad esempio un proprio account Netflix. KoalaSync sincronizza solo le azioni di riproduzione come play, pausa e avanzamento.",
   "FAQ_Q2": "KoalaSync è gratuito?",
   "FAQ_A2": "Sì, al 100%. È open source con licenza MIT. Non ci sono funzioni a pagamento né pubblicità. A differenza di altre app, non raccogliamo dati utente.",
   "FAQ_Q3": "Funziona con Emby o Jellyfin?",
diff --git a/website/locales/ja.json b/website/locales/ja.json
index 613f319..fdd90a0 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "完璧に同期して動画を一緒に楽しむために必要なすべての情報。",
   "FAQ_Q1": "友達と一緒にNetflix、Emby、Jellyfinを同期視聴できますか？",
   "FAQ_A1": "はい！KoalaSyncはNetflix, YouTube, TwitchおよびHTML5ビデオプレーヤーを備えたあらゆるウェブサイト（Emby, Jellyfin, 独自のメディアサーバーを含む）で動作します。拡張機能をインストールし、ルームを作成して招待リンクを共有するだけで、全員で完全に同期して視聴できます。",
+  "FAQ_Q_VIDEO_ACCESS": "KoalaSync は友達に動画を配信しますか？",
+  "FAQ_A_VIDEO_ACCESS": "いいえ。KoalaSync は動画コンテンツを配信、ホスト、共有したり、アクセス制限を回避したりしません。各参加者は自分のブラウザで動画をローカルに視聴し、Netflix アカウントなど、そのウェブサイトやストリーミングサービスへの自分自身のアクセス権が必要です。KoalaSync は再生、一時停止、シークなどの再生操作だけを同期します。",
   "FAQ_Q2": "KoalaSyncはTelepartyの無料の代替ツールですか？",
   "FAQ_A2": "MITライセンスのもとで100%無料かつオープンソース。有料プラン、制限された機能、広告などは一切ありません。Telepartyとは異 nel、KoalaSyncのリレーサーバーはメモリ上のみで動作し、データ収集やユーザーアカウント作成は不要です。",
   "FAQ_Q3": "KoalaSyncはEmby、Jellyfin、およびセルフホストのメディアサーバーで動作しますか？",
diff --git a/website/locales/ko.json b/website/locales/ko.json
index 187ab39..f7d144a 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "완벽한 동기화로 비디오를 함께 시청하는 방법에 대해 알아야 할 모든 것.",
   "FAQ_Q1": "친구들과 Netflix, Emby 또는 Jellyfin을 함께 동기화하여 시청할 수 있나요?",
   "FAQ_A1": "네! KoalaSync는 Netflix, YouTube, Twitch 및 HTML5 비디오 플레이어가 있는 모든 웹사이트(Emby, Jellyfin 및 자체 호스팅 미디어 서버 포함)에서 작동합니다. 확장 프로그램을 설치하고 방을 만든 후 초대 링크를 공유하면 모두가 완벽하게 동기화되어 시청할 수 있습니다.",
+  "FAQ_Q_VIDEO_ACCESS": "KoalaSync가 친구들에게 동영상을 스트리밍하나요?",
+  "FAQ_A_VIDEO_ACCESS": "아니요. KoalaSync는 동영상 콘텐츠를 스트리밍, 호스팅, 공유하거나 접근 권한을 우회하지 않습니다. 모든 참가자는 각자의 브라우저에서 동영상을 로컬로 시청하며, Netflix 계정처럼 해당 웹사이트나 스트리밍 서비스에 대한 본인만의 접근 권한이 필요합니다. KoalaSync는 재생, 일시정지, 탐색 같은 재생 동작만 동기화합니다.",
   "FAQ_Q2": "KoalaSync는 Teleparty의 무료 대체 서비스인가요?",
   "FAQ_A2": "MIT 라이선스에 따라 100% 무료이며 오픈 소스입니다. 프리미ウム 등급도, 제한된 기능도, 광고도 없습니다. 모든 것이 포함되어 있습니다. Teleparty와 달리 KoalaSync의 릴레이 서버는 가입이나 개인정보 수집 없이 RAM에서만 실행됩니다.",
   "FAQ_Q3": "KoalaSync는 Emby, Jellyfin 및 자체 호스팅 미디어 서버에서 작동하나요?",
diff --git a/website/locales/nl.json b/website/locales/nl.json
index df78a57..e58b85f 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Alles wat u moet weten over het samen bekijken van video's in perfecte synchronisatie.",
   "FAQ_Q1": "Kan ik Netflix, Emby of Jellyfin samen in sync kijken met vrienden?",
   "FAQ_A1": "Ja! KoalaSync werkt op Netflix, YouTube, Twitch en elke website met een HTML5-videospeler — inclusief Emby, Jellyfin en zelfgehoste mediaservers. Installeer de extensie, maak een kamer, deel de uitnodigingslink en iedereen kijkt in perfecte sync.",
+  "FAQ_Q_VIDEO_ACCESS": "Streamt KoalaSync de video naar mijn vrienden?",
+  "FAQ_A_VIDEO_ACCESS": "Nee. KoalaSync streamt, host of deelt geen videocontent en omzeilt geen toegang tot video’s. Iedereen kijkt de video lokaal in de eigen browser en heeft zelf toegang nodig tot de website of streamingdienst, bijvoorbeeld een eigen Netflix-account. KoalaSync synchroniseert alleen afspeelacties zoals afspelen, pauzeren en spoelen.",
   "FAQ_Q2": "Is KoalaSync een gratis alternatief voor Teleparty?",
   "FAQ_A2": "100% gratis en open-source onder de MIT-licentie. Geen premium-niveaus, geen vergrendelde functies, geen advertenties — alles is inbegrepen. In tegenstelling tot Teleparty is de relayserver van KoalaSync alleen in het RAM-geheugen met nul gegevensverzameling of gebruikersaccounts vereist.",
   "FAQ_Q3": "Werkt KoalaSync met Emby, Jellyfin en zelfgehoste mediaservers?",
diff --git a/website/locales/pl.json b/website/locales/pl.json
index ab02c63..80bf6e0 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Wszystko, co musisz wiedzieć o wspólnym oglądaniu filmów w idealnej synchronizacji.",
   "FAQ_Q1": "Czy mogę oglądać Netflix, Emby lub Jellyfin w synchronizacji ze znajomymi?",
   "FAQ_A1": "Tak! KoalaSync działa na Netflix, YouTube, Twitch i każdej stronie z odtwarzaczem wideo HTML5 — w tym Emby, Jellyfin i własnych serwerach mediów. Zainstaluj rozszerzenie, utwórz pokój, udostępnij link i wszyscy oglądają w idealnej synchronizacji.",
+  "FAQ_Q_VIDEO_ACCESS": "Czy KoalaSync przesyła wideo do moich znajomych?",
+  "FAQ_A_VIDEO_ACCESS": "Nie. KoalaSync nie przesyła, nie hostuje, nie udostępnia ani nie omija dostępu do treści wideo. Każda osoba ogląda wideo lokalnie we własnej przeglądarce i potrzebuje własnego dostępu do danej strony lub usługi streamingowej, na przykład własnego konta Netflix. KoalaSync synchronizuje tylko akcje odtwarzania, takie jak odtwarzanie, pauza i przewijanie.",
   "FAQ_Q2": "Czy KoalaSync to darmowa alternatywa dla Teleparty?",
   "FAQ_A2": "W 100% darmowy i o otwartym kodzie na licencji MIT. Brak planów premium, brak zablokowanych funkcji, brak reklam — wszystko jest w cenie. W przeciwieństwie do Teleparty, serwer KoalaSync działa tylko w pamięci RAM, bez zbierania danych i bez kont użytkowników.",
   "FAQ_Q3": "Czy KoalaSync działa z Emby, Jellyfin i własnymi serwerami mediów?",
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index e0dd9b1..e9b4daf 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Tudo o que você precisa saber.",
   "FAQ_Q1": "Posso assistir Netflix ou YouTube em sincronia com meus amigos?",
   "FAQ_A1": "Sim! O KoalaSync funciona no Netflix, YouTube, Twitch e qualquer site com vídeo HTML5. Instale a extensão, compartilhe o link e pronto.",
+  "FAQ_Q_VIDEO_ACCESS": "O KoalaSync transmite o vídeo para meus amigos?",
+  "FAQ_A_VIDEO_ACCESS": "Não. O KoalaSync não transmite, hospeda, compartilha nem contorna o acesso a conteúdos de vídeo. Cada pessoa assiste ao vídeo localmente no próprio navegador e precisa ter seu próprio acesso ao site ou serviço de streaming, como sua própria conta da Netflix. O KoalaSync sincroniza apenas ações de reprodução, como reproduzir, pausar e avançar ou voltar.",
   "FAQ_Q2": "É gratuito?",
   "FAQ_A2": "Sim, é 100% gratuito e open source. Sem recursos pagos e sem anúncios.",
   "FAQ_Q3": "Funciona com Emby ou Jellyfin?",
diff --git a/website/locales/pt.json b/website/locales/pt.json
index b5c6554..c127c0e 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Tudo o que precisa de saber.",
   "FAQ_Q1": "Posso ver a Netflix ou YouTube com os meus amigos?",
   "FAQ_A1": "Sim! O KoalaSync funciona no Netflix, YouTube, Twitch e qualquer site com vídeo HTML5. Instale a extensão, partilhe o link e está feito.",
+  "FAQ_Q_VIDEO_ACCESS": "O KoalaSync transmite o vídeo para os meus amigos?",
+  "FAQ_A_VIDEO_ACCESS": "Não. O KoalaSync não transmite, aloja, partilha nem contorna o acesso a conteúdos de vídeo. Cada pessoa vê o vídeo localmente no seu próprio navegador e precisa do seu próprio acesso ao site ou serviço de streaming, por exemplo a sua própria conta Netflix. O KoalaSync apenas sincroniza ações de reprodução, como reproduzir, pausar e avançar ou recuar.",
   "FAQ_Q2": "É gratuito?",
   "FAQ_A2": "Sim, é 100% gratuito e de código aberto. Sem funções premium bloqueadas e sem publicidade.",
   "FAQ_Q3": "Funciona com Emby ou Jellyfin?",
diff --git a/website/locales/ru.json b/website/locales/ru.json
index b1c0e0a..1f59414 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Всё, что нужно знать о синхронном просмотре видео с друзьями.",
   "FAQ_Q1": "Могу ли я смотреть Netflix, Emby или Jellyfin синхронно с друзьями?",
   "FAQ_A1": "Да! KoalaSync работает с Netflix, YouTube, Twitch и любым сайтом с HTML5-видеоплеером — включая Emby, Jellyfin и собственные медиасерверы. Установите расширение, создайте комнату, поделитесь ссылкой и смотрите в идеальной синхронизации.",
+  "FAQ_Q_VIDEO_ACCESS": "KoalaSync транслирует видео моим друзьям?",
+  "FAQ_A_VIDEO_ACCESS": "Нет. KoalaSync не транслирует, не размещает, не передает видеоконтент и не обходит доступ к нему. Каждый участник смотрит видео локально в своем браузере и должен иметь собственный доступ к сайту или стриминговому сервису, например собственный аккаунт Netflix. KoalaSync синхронизирует только действия воспроизведения: запуск, паузу и перемотку.",
   "FAQ_Q2": "KoalaSync — бесплатная альтернатива Teleparty?",
   "FAQ_A2": "100% бесплатно и с открытым исходным кодом под лицензией MIT. Без премиум-уровней, без заблокированных функций, без рекламы. В отличие от Teleparty, сервер KoalaSync работает только в ОЗУ — без сбора данных и учётных записей.",
   "FAQ_Q3": "Работает ли KoalaSync с Emby, Jellyfin и собственными медиасерверами?",
diff --git a/website/locales/tr.json b/website/locales/tr.json
index 54bd1dc..e3bf7b5 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Videoları mükemmel bir uyum içinde birlikte izleme hakkında bilmeniz gereken her şey.",
   "FAQ_Q1": "Arkadaşlarımla Netflix, Emby veya Jellyfin'i eş zamanlı olarak izleyebilir miyim?",
   "FAQ_A1": "Evet! KoalaSync; Netflix, YouTube, Twitch ve HTML5 video oynatıcısı olan tüm web sitelerinde (Emby, Jellyfin ve kendi barındırdığınız medya sunucuları dahil) çalışır. Eklentiyi kurun, bir oda oluşturun, davet bağlantısını paylaşın; herkes mükemmel bir uyum içinde izlesin.",
+  "FAQ_Q_VIDEO_ACCESS": "KoalaSync videoyu arkadaşlarıma aktarır mı?",
+  "FAQ_A_VIDEO_ACCESS": "Hayır. KoalaSync video içeriğini yayınlamaz, barındırmaz, paylaşmaz veya erişim kısıtlamalarını aşmaz. Herkes videoyu kendi tarayıcısında yerel olarak izler ve ilgili web sitesine ya da yayın hizmetine kendi erişimine, örneğin kendi Netflix hesabına, ihtiyaç duyar. KoalaSync yalnızca oynat, duraklat ve ileri geri sarma gibi oynatma eylemlerini senkronize eder.",
   "FAQ_Q2": "KoalaSync, Teleparty'ye ücretsiz bir alternatif mi?",
   "FAQ_A2": "MIT Lisansı kapsamında %100 ücretsiz ve açık kaynaklıdır. Premium katmanlar yok, kilitli özellikler yok, reklam yok — her şey dahil. Teleparty'nin aksine, KoalaSync'in aktarım sunucusu yalnızca RAM üzerindedir; sıfır veri toplama ve kullanıcı hesabı gereksinimi vardır.",
   "FAQ_Q3": "KoalaSync; Emby, Jellyfin ve kendi barındırdığınız medya sunucularıyla çalışır mı?",
diff --git a/website/locales/uk.json b/website/locales/uk.json
index ed6a3e3..8c6cf74 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "Все, що вам потрібно знати про спільний перегляд відео в ідеальній синхронізації.",
   "FAQ_Q1": "Чи можу я дивитися Netflix, Emby або Jellyfin разом із друзями?",
   "FAQ_A1": "так! KoalaSync працює на Netflix, YouTube, Twitch і будь-якому веб-сайті з відеопрогравачем HTML5, включаючи Emby, Jellyfin і медіасервери, розміщені на власному хості. Установіть розширення, створіть кімнату, поділіться посиланням для запрошення, і всі дивитимуться в повній синхронізації.",
+  "FAQ_Q_VIDEO_ACCESS": "Чи транслює KoalaSync відео моїм друзям?",
+  "FAQ_A_VIDEO_ACCESS": "Ні. KoalaSync не транслює, не розміщує, не поширює відеоконтент і не обходить доступ до нього. Кожен учасник дивиться відео локально у власному браузері та повинен мати власний доступ до сайту або стримінгового сервісу, наприклад власний акаунт Netflix. KoalaSync синхронізує лише дії відтворення, як-от запуск, паузу та перемотування.",
   "FAQ_Q2": "Чи є KoalaSync безкоштовною альтернативою Teleparty?",
   "FAQ_A2": "100% безкоштовне та з відкритим кодом за ліцензією MIT. Без преміум-рівнів, без заблокованих функцій, без реклами — все включено. На відміну від Teleparty, ретрансляційний сервер KoalaSync призначений лише для RAM і не вимагає збору даних або облікових записів користувачів.",
   "FAQ_Q3": "Чи працює KoalaSync із Emby, Jellyfin і власними медіа-серверами?",
diff --git a/website/locales/zh.json b/website/locales/zh.json
index 0ad9bf4..d987fd7 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -117,6 +117,8 @@
   "FAQ_SUBTITLE": "关于完美同步地一起观看视频所需了解的一切。",
   "FAQ_Q1": "我可以与朋友同步观看 Netflix、Emby 或 Jellyfin 吗？",
   "FAQ_A1": "是的！ KoalaSync 适用于 Netflix、YouTube、Twitch 以及任何具有 HTML5 视频播放器的网站 - 包括 Emby、Jellyfin 和自托管媒体服务器。安装扩展程序、创建房间、共享邀请链接，每个人都可以完美同步观看。",
+  "FAQ_Q_VIDEO_ACCESS": "KoalaSync 会把视频串流给我的朋友吗？",
+  "FAQ_A_VIDEO_ACCESS": "不会。KoalaSync 不会串流、托管、共享视频内容，也不会绕过任何访问权限。每个人都在自己的浏览器中本地观看视频，并且需要自己拥有该网站或流媒体服务的访问权限，例如自己的 Netflix 账号。KoalaSync 只同步播放、暂停和拖动进度等播放操作。",
   "FAQ_Q2": "KoalaSync 是 Teleparty 的免费替代品吗？",
   "FAQ_A2": "在 MIT 许可证下 100% 免费和开源。没有高级套餐、没有锁定功能、没有广告——一切都包含在内。与 Teleparty 不同，KoalaSync 的中继服务器仅是 RAM，需要零数据收集或用户帐户。",
   "FAQ_Q3": "KoalaSync 是否可以与 Emby、Jellyfin 和自托管媒体服务器配合使用？",
diff --git a/website/template.html b/website/template.html
index a903049..0325a17 100644
--- a/website/template.html
+++ b/website/template.html
@@ -154,6 +154,11 @@
           "name": "{{FAQ_Q1}}",
           "acceptedAnswer": { "@type": "Answer", "text": "{{FAQ_A1}}" }
         },
+        {
+          "@type": "Question",
+          "name": "{{FAQ_Q_VIDEO_ACCESS}}",
+          "acceptedAnswer": { "@type": "Answer", "text": "{{FAQ_A_VIDEO_ACCESS}}" }
+        },
         {
           "@type": "Question",
           "name": "{{FAQ_Q2}}",
@@ -1197,6 +1202,10 @@
                     <summary><span>{{FAQ_Q1}}</span></summary>
                     <p><span>{{FAQ_A1}}</span></p>
                 </details>
+                <details class="faq-item" data-reveal>
+                    <summary><span>{{FAQ_Q_VIDEO_ACCESS}}</span></summary>
+                    <p><span>{{FAQ_A_VIDEO_ACCESS}}</span></p>
+                </details>
                 <details class="faq-item" data-reveal>
                     <summary><span>{{FAQ_Q2}}</span></summary>
                     <p><span>{{FAQ_A2}}</span></p>

From 2d9b7bc0993ccf40847271beee78e76ca657e799 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Mon, 29 Jun 2026 12:52:22 +0200
Subject: [PATCH 074/151] Ignore Claude local files

---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index 65830fc..c0b6b82 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,6 +27,7 @@ Thumbs.db
 # IDEs
 .vscode/
 .idea/
+.claude/
 *.swp
 *.swo
 

From e683466bf0b2b125af5cac29232823e1b851449c Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Mon, 29 Jun 2026 10:58:06 +0000
Subject: [PATCH 075/151] chore(release): update versions to v2.5.0 [skip ci]

---
 README.md                    |   4 +-
 extension/manifest.base.json |   2 +-
 package.json                 |   2 +-
 shared/constants.js          |   2 +-
 website/sitemap.xml          | 124 +++++++++++++++++------------------
 website/template.html        |   2 +-
 website/version.json         |   4 +-
 7 files changed, 70 insertions(+), 70 deletions(-)

diff --git a/README.md b/README.md
index b977db7..a8f17bc 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml"><img src="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg" alt="Release Status"></a>
-  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.4.6-blue?logo=github" alt="GitHub release"></a>
+  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.5.0-blue?logo=github" alt="GitHub release"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue" alt="License"></a>
   <a href="https://addons.mozilla.org/de/firefox/addon/koalasync/"><img src="https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser&logoColor=white" alt="Firefox Add-on"></a>
   <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white" alt="Chrome Extension"></a>
@@ -14,7 +14,7 @@
 
 <p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
 
-<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.4.6 Release!</b> — See what's changed</a></p>
+<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.5.0 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
diff --git a/extension/manifest.base.json b/extension/manifest.base.json
index 07a3c6f..4962791 100644
--- a/extension/manifest.base.json
+++ b/extension/manifest.base.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "en",
   "name": "KoalaSync",
-  "version": "2.4.6",
+  "version": "2.5.0",
   "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
diff --git a/package.json b/package.json
index b569683..634601a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "2.4.6",
+  "version": "2.5.0",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "type": "module",
diff --git a/shared/constants.js b/shared/constants.js
index dd0137d..65d78b4 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -7,7 +7,7 @@
  */
 
 export const PROTOCOL_VERSION = "1.0.0";
-export const APP_VERSION = "2.4.6";
+export const APP_VERSION = "2.5.0";
 
 export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
diff --git a/website/sitemap.xml b/website/sitemap.xml
index a60ca4c..f6fa14d 100644
--- a/website/sitemap.xml
+++ b/website/sitemap.xml
@@ -3,31 +3,31 @@
         xmlns:xhtml="http://www.w3.org/1999/xhtml">
   <url>
     <loc>https://sync.koalastuff.net/imprint</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/privacy</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/impressum</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/datenschutz</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -49,7 +49,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -71,7 +71,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -93,7 +93,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -115,7 +115,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -137,7 +137,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -159,7 +159,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -181,7 +181,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -203,7 +203,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -225,7 +225,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -247,7 +247,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -269,7 +269,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -291,7 +291,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -313,7 +313,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -335,7 +335,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -357,7 +357,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -379,7 +379,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -401,7 +401,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -423,7 +423,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -445,7 +445,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -467,7 +467,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -489,7 +489,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -511,7 +511,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -533,7 +533,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -555,7 +555,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -577,7 +577,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -599,7 +599,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -621,7 +621,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -643,7 +643,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -665,7 +665,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -687,7 +687,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -709,7 +709,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -731,7 +731,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -753,7 +753,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -775,7 +775,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -797,7 +797,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -819,7 +819,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -841,7 +841,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -863,7 +863,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -885,7 +885,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/zh/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -907,7 +907,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/zh/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -929,7 +929,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/zh/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -951,7 +951,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/uk/alternatives</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -973,7 +973,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/uk/alternatives/teleparty</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -995,7 +995,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/uk/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-24</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -1017,7 +1017,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>1.0</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1037,7 +1037,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1057,7 +1057,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1077,7 +1077,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1097,7 +1097,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1117,7 +1117,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1137,7 +1137,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1157,7 +1157,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1177,7 +1177,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1197,7 +1197,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1217,7 +1217,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1237,7 +1237,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1257,7 +1257,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/</loc>
-    <lastmod>2026-06-23</lastmod>
+    <lastmod>2026-06-29</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
diff --git a/website/template.html b/website/template.html
index 0325a17..23c70f2 100644
--- a/website/template.html
+++ b/website/template.html
@@ -106,7 +106,7 @@
         "priceCurrency": "EUR"
       },
       "description": "{{SCHEMA_APP_DESC}}",
-      "softwareVersion": "2.4.6",
+      "softwareVersion": "2.5.0",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",
       "image": "https://sync.koalastuff.net/assets/NewLogoIcon.webp",
diff --git a/website/version.json b/website/version.json
index 1ea3f8d..e64689f 100644
--- a/website/version.json
+++ b/website/version.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.4.6",
-  "date": "2026-06-23T16:36:23Z"
+  "version": "2.5.0",
+  "date": "2026-06-29T10:58:06Z"
 }

From 4f1335242cbb969f956b316c69562363646781d7 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Mon, 29 Jun 2026 13:35:34 +0200
Subject: [PATCH 076/151] feat(extension): add shared title privacy modes

---
 docs/CHANGELOG.md                           |   7 ++
 docs/HOW_IT_WORKS.md                        |   4 +-
 docs/PRIVACY.md                             |   2 +-
 docs/branch-scope-issue-13-title-privacy.md |  41 +++++++
 extension/background.js                     | 123 ++++++++++++++++----
 extension/locales/de.json                   |   7 +-
 extension/locales/en.json                   |   7 +-
 extension/locales/es.json                   |   7 +-
 extension/locales/fr.json                   |   7 +-
 extension/locales/it.json                   |   7 +-
 extension/locales/ja.json                   |   7 +-
 extension/locales/ko.json                   |   7 +-
 extension/locales/nl.json                   |   7 +-
 extension/locales/pl.json                   |   7 +-
 extension/locales/pt-BR.json                |   7 +-
 extension/locales/pt.json                   |   7 +-
 extension/locales/ru.json                   |   7 +-
 extension/locales/tr.json                   |   7 +-
 extension/locales/uk.json                   |   7 +-
 extension/locales/zh.json                   |   7 +-
 extension/popup.html                        |   9 ++
 extension/popup.js                          |  12 +-
 extension/title-privacy.js                  |  35 ++++++
 scripts/test-title-privacy.mjs              |  52 +++++++++
 scripts/verify-release.mjs                  |   1 +
 25 files changed, 347 insertions(+), 44 deletions(-)
 create mode 100644 docs/branch-scope-issue-13-title-privacy.md
 create mode 100644 extension/title-privacy.js
 create mode 100644 scripts/test-title-privacy.mjs

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index e106a17..35ba985 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -4,6 +4,13 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ---
 
+## Unreleased
+
+### Added
+- **Extension: Shared title privacy setting** - Advanced users can now choose whether KoalaSync shares full tab/media titles, only detected episode identifiers such as `S01E04`, or no shared titles at all. The default remains full titles for backwards compatibility.
+
+---
+
 ## [v2.5.0] — 2026-06-29
 
 ### Added
diff --git a/docs/HOW_IT_WORKS.md b/docs/HOW_IT_WORKS.md
index 7aec053..46f8a94 100644
--- a/docs/HOW_IT_WORKS.md
+++ b/docs/HOW_IT_WORKS.md
@@ -156,7 +156,7 @@ While in a room, two heartbeats keep the session alive:
 | Heartbeat | Interval | Source | Purpose |
 |:----------|:---------|:-------|:--------|
 | **Background** | 30 seconds | `background.js` | While connected, signals "I'm still connected" and triggers automatic reconnect (500ms base, max 5s). No heartbeats fire when idle (lazy connect). |
-| **Content** | 15 seconds | `content.js` | Sends video metadata: `currentTime`, `mediaTitle`, `playbackState`, `volume`, `muted` |
+| **Content** | 15 seconds | `content.js` | Sends video metadata: `currentTime`, privacy-filtered `mediaTitle`, `playbackState`, `volume`, `muted` |
 
 - **Server Reaper**: Every 2 minutes, the server checks for peers with no activity for 5+ minutes and disconnects them ("dead peer pruning").
 - **Room Cleanup**: Empty rooms are deleted immediately. Inactive rooms are pruned after 2 hours.
@@ -184,7 +184,7 @@ When a user clicks **"Leave"** or closes their browser:
 When watching a series and an episode ends:
 
 1. `content.js` monitors the [Media Session API](https://developer.mozilla.org/en-US/docs/Web/API/Media_Session_API) for title changes.
-2. When a new title is detected, the peer broadcasts `EPISODE_LOBBY` with the expected new title.
+2. When a new title is detected, the peer broadcasts `EPISODE_LOBBY` with the expected title after applying the local Shared Titles privacy setting. In episode-only mode this is an identifier such as `S01E04`; in hidden mode the client does not create a new episode lobby.
 3. All peers' videos freeze. The UI shows an "Episode Lobby" card with peer readiness status.
 4. Each peer's `content.js` polls for the new title to appear in the `<video>` element's metadata.
 5. Once a peer detects the matching title, they send `EPISODE_READY`.
diff --git a/docs/PRIVACY.md b/docs/PRIVACY.md
index 1d98aad..06a271c 100644
--- a/docs/PRIVACY.md
+++ b/docs/PRIVACY.md
@@ -8,7 +8,7 @@ KoalaSync is designed with a **Security-First & Volatile** architecture. This me
 
 ## 1. Data Processing (In-Memory Only)
 KoalaSync does not use a database. All active session data exists only in the server's RAM and is purged immediately when no longer needed.
-- **Session Data**: To synchronize playback, the server must temporarily hold your `peerId`, `username`, and the `title` of the video you are watching. Additionally, playback metadata (`mediaTitle`, `playbackState`, `currentTime`, `volume`, `muted`) is held per peer for the duration of the session. All of this is deleted as soon as you leave the room.
+- **Session Data**: To synchronize playback, the server must temporarily hold your `peerId` and `username`. By default, KoalaSync also shares the selected tab title and media title with the room so peers can identify matching videos and coordinate episode transitions. You can change the Shared Titles privacy setting to send only a detected episode identifier (for example `S01E04`) or hide shared titles entirely. Playback metadata (`playbackState`, `currentTime`, `volume`, `muted`) is held per peer for the duration of the session. All of this is deleted as soon as you leave the room.
 - **Room Passwords**: If you set a room password, it is stored only as an in-memory **keyed SHA-256 HMAC hash**. The server receives the plaintext password only during join validation, never stores it, and keeps only the hash for the short room lifetime.
 - **Routing Maps**: The server maintains ephemeral lookup tables (`socketToRoom`, `peerToSocket`) to route messages between peers. These contain only transport identifiers and are purged on disconnect.
 
diff --git a/docs/branch-scope-issue-13-title-privacy.md b/docs/branch-scope-issue-13-title-privacy.md
new file mode 100644
index 0000000..fa8c490
--- /dev/null
+++ b/docs/branch-scope-issue-13-title-privacy.md
@@ -0,0 +1,41 @@
+# Branch Scope: Issue #13 Title Privacy
+
+Temporary planning document for branch `codex/issue-13-title-privacy`.
+
+IMPORTANT: Delete this file before opening the PR. It is only for branch-local coordination and should not be merged.
+
+## Issue
+
+GitHub issue #13 asks for an advanced privacy option that controls whether tab titles and media titles are sent to the KoalaSync relay server.
+
+## Goals
+
+- Keep the existing behavior as the default for full backwards compatibility.
+- Add a local-only extension setting for shared title privacy.
+- Support three modes:
+  - Full titles: current behavior.
+  - Episode only: send only an extracted episode identifier such as `S01E04` or `EP004`.
+  - Hidden: clear shared tab and media titles before they leave the extension.
+- Avoid server changes unless absolutely necessary.
+- Preserve local title-based behavior where possible, including local episode detection.
+
+## Compatibility Notes
+
+- Existing users should keep sending full titles unless they actively change the new setting.
+- Existing servers already accept omitted, `null`, or string title fields.
+- The protocol version should not need to change because this is a client-side reduction of optional payload fields.
+- Older clients in the same room will keep behaving as before.
+
+## Implementation Notes
+
+- Centralize outgoing title filtering in `extension/background.js`.
+- Store the option in `chrome.storage.local`, not `chrome.storage.sync`.
+- Use the existing episode extraction helper logic for episode-only mode.
+- In hidden mode, actively send `null` for title fields so stale titles are cleared server-side.
+- Episode lobby payloads must not leak full titles when privacy mode is hidden.
+
+## Verification
+
+- Run the existing verification script.
+- Add focused tests for title privacy helpers if the code shape allows it.
+- Manually inspect the popup settings layout after adding the select control.
diff --git a/extension/background.js b/extension/background.js
index 33bfd28..d1193db 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -2,6 +2,7 @@ import { EVENTS, CONTROL_MODES, CAPABILITIES, PROTOCOL_VERSION, OFFICIAL_SERVER_
 import { generateUsername } from './shared/names.js';
 import { loadLocale, getMessage, getSystemLanguage } from './i18n.js';
 import { sameEpisode } from './episode-utils.js';
+import { applyTitlePrivacyToPayload, sanitizeSharedTitle, normalizeTitlePrivacyMode } from './title-privacy.js';
 import { initTabManager } from './modules/tab-manager.js';
 
 // --- Uninstall URL Initialization ---
@@ -362,7 +363,7 @@ async function getSettings() {
     // (username) must NEVER come from storage.sync — syncing them across devices
     // both leaks them and resurrects dead rooms on reinstall (a fresh install
     // has empty local storage but sync survives in the user's Google account).
-    const data = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username']);
+    const data = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username', 'titlePrivacyMode']);
     let username = data.username;
     if (!username) {
         username = generateUsername();
@@ -373,10 +374,23 @@ async function getSettings() {
         useCustomServer: data.useCustomServer || false,
         roomId: data.roomId || '',
         password: data.password || '',
-        username
+        username,
+        titlePrivacyMode: normalizeTitlePrivacyMode(data.titlePrivacyMode)
     };
 }
 
+function getSharedTitleFields(settings, mediaTitle = null) {
+    const mode = settings?.titlePrivacyMode;
+    return {
+        tabTitle: sanitizeSharedTitle(currentTabTitle, mode),
+        mediaTitle: sanitizeSharedTitle(mediaTitle, mode)
+    };
+}
+
+function withTitlePrivacy(payload, settings, keys) {
+    return applyTitlePrivacyToPayload(payload, settings?.titlePrivacyMode, keys);
+}
+
 // Privacy + correctness: only onboardingComplete and dismissedHints belong in
 // storage.sync. Everything else is per-device local storage. This actively
 // removes legacy keys that older versions wrote to sync (and that would
@@ -384,7 +398,8 @@ async function getSettings() {
 const LEGACY_SYNC_KEYS = [
     'serverUrl', 'useCustomServer', 'roomId', 'password', 'username',
     'filterNoise', 'autoSyncNextEpisode', 'forceSyncMode',
-    'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings'
+    'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings',
+    'titlePrivacyMode'
 ];
 function purgeLegacySyncKeys() {
     chrome.storage.sync.remove(LEGACY_SYNC_KEYS).catch(() => {});
@@ -640,12 +655,13 @@ async function connect() {
                 addLog('Joined Namespace /', 'success');
                 const settings = await getSettings();
                 if (settings.roomId) {
+                    const sharedTitles = getSharedTitleFields(settings);
                     emit(EVENTS.JOIN_ROOM, { 
                         roomId: settings.roomId, 
                         password: settings.password,
                         peerId,
                         username: settings.username,
-                        tabTitle: currentTabTitle,
+                        tabTitle: sharedTitles.tabTitle,
                         protocolVersion: PROTOCOL_VERSION
                     });
                 }
@@ -1615,11 +1631,13 @@ chrome.alarms.onAlarm.addListener(async (alarm) => {
             const otherCount = currentRoom && Array.isArray(currentRoom.peers) ? currentRoom.peers.filter(p => (typeof p === 'object' ? p.peerId : p) !== peerId).length : 0;
             if (otherCount > 0) {
                 const settings = await getSettings();
+                const sharedTitles = getSharedTitleFields(settings);
                 emit(EVENTS.PEER_STATUS, {
                     peerId,
                     status: 'heartbeat',
                     username: settings.username,
-                    tabTitle: currentTabTitle,
+                    tabTitle: sharedTitles.tabTitle,
+                    mediaTitle: sharedTitles.mediaTitle,
                     desynced: hcmDesynced
                 });
             }
@@ -1712,12 +1730,13 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             if (desiredUrl !== currentServerUrl) forceDisconnect();
             if (settings.roomId) connect();
         } else if (settings.roomId) {
+            const sharedTitles = getSharedTitleFields(settings);
             emit(EVENTS.JOIN_ROOM, { 
                 roomId: settings.roomId, 
                 password: settings.password,
                 peerId,
                 username: settings.username,
-                tabTitle: currentTabTitle,
+                tabTitle: sharedTitles.tabTitle,
                 protocolVersion: PROTOCOL_VERSION
             });
         }
@@ -1929,12 +1948,13 @@ async function handleAsyncMessage(message, sender, sendResponse) {
                 if (desiredUrl !== currentServerUrl) forceDisconnect();
                 connect();
             } else if (roomId) {
+                const sharedTitles = getSharedTitleFields(settings);
                 emit(EVENTS.JOIN_ROOM, { 
                     roomId, 
                     password,
                     peerId,
                     username: settings.username,
-                    tabTitle: currentTabTitle,
+                    tabTitle: sharedTitles.tabTitle,
                     protocolVersion: PROTOCOL_VERSION
                 });
             }
@@ -1964,7 +1984,7 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             }
         });
     } else if (message.type === 'CONTENT_EVENT') {
-        const processEvent = () => {
+        const processEvent = async () => {
             // Host Control Mode (sender-side): a non-controller in host-only mode must
             // not drive the room. Don't broadcast; hand the action back to content.js so
             // it can snap the local player back / offer desync.
@@ -2047,7 +2067,9 @@ async function handleAsyncMessage(message, sender, sendResponse) {
                 return;
             }
             
-            emit(message.action, { ...message.payload, peerId });
+            const settings = await getSettings();
+            const outboundPayload = withTitlePrivacy(message.payload, settings, ['mediaTitle']);
+            emit(message.action, { ...outboundPayload, peerId });
             sendResponse({ status: 'ok' });
         };
 
@@ -2062,10 +2084,16 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             currentTabTitle = sender.tab.title ? sender.tab.title.substring(0, 50) : null;
             chrome.storage.session.set({ currentTabTitle });
             updateBadgeStatus();
-            processEvent();
+            processEvent().catch(err => {
+                addLog('Content event privacy error: ' + err.message, 'error');
+                sendResponse({ status: 'error' });
+            });
         } else {
             routeToContent(message.action, message.payload);
-            processEvent();
+            processEvent().catch(err => {
+                addLog('Content event privacy error: ' + err.message, 'error');
+                sendResponse({ status: 'error' });
+            });
         }
     } else if (message.type === 'FORCE_SYNC_ACK') {
         if (isForceSyncInitiator) {
@@ -2122,16 +2150,24 @@ async function handleAsyncMessage(message, sender, sendResponse) {
 
         markRoomUseful();
         getSettings().then(settings => {
-            const statusPayload = { ...message.payload, peerId, username: settings.username, tabTitle: currentTabTitle, desynced: hcmDesynced };
+            const sharedTitles = getSharedTitleFields(settings, message.payload?.mediaTitle);
+            const statusPayload = {
+                ...message.payload,
+                peerId,
+                username: settings.username,
+                tabTitle: sharedTitles.tabTitle,
+                mediaTitle: sharedTitles.mediaTitle,
+                desynced: hcmDesynced
+            };
             const otherCount = currentRoom && Array.isArray(currentRoom.peers) ? currentRoom.peers.filter(p => (typeof p === 'object' ? p.peerId : p) !== peerId).length : 0;
             if (otherCount > 0) emit(EVENTS.PEER_STATUS, statusPayload);
 
             if (currentRoom && Array.isArray(currentRoom.peers)) {
                 const me = currentRoom.peers.find(p => (p.peerId || p) === peerId);
                 if (me && typeof me === 'object') {
-                    me.tabTitle = currentTabTitle;
+                    me.tabTitle = sharedTitles.tabTitle;
                     me.username = settings.username;
-                    me.mediaTitle = message.payload?.mediaTitle;
+                    me.mediaTitle = sharedTitles.mediaTitle;
                     me.playbackState = message.payload?.playbackState;
                     me.currentTime = message.payload?.currentTime;
                     me.volume = message.payload?.volume;
@@ -2193,10 +2229,18 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             return;
         }
 
+        const settings = await getSettings();
+        const lobbyTitle = sanitizeSharedTitle(newTitle, settings.titlePrivacyMode);
+        if (!lobbyTitle) {
+            addLog(`Episode change detected but title sharing is ${settings.titlePrivacyMode}; not creating a lobby.`, 'info');
+            sendResponse({ status: 'title_privacy_no_lobby' });
+            return;
+        }
+
         // Check setting
         const epSettings = await chrome.storage.local.get(['autoSyncNextEpisode']);
         if (epSettings.autoSyncNextEpisode === false) {
-            addLog(`Episode change detected ("${newTitle}") but Auto-Sync is disabled.`, 'info');
+            addLog(`Episode change detected ("${lobbyTitle}") but Auto-Sync is disabled.`, 'info');
             sendResponse({ status: 'disabled' });
             return;
         }
@@ -2208,7 +2252,7 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         // guest just follows / snaps back. Use amController() for parity with the
         // CONTENT_EVENT gate and the server's controllers-based check.
         if (controlMode === CONTROL_MODES.HOST_ONLY && !amController()) {
-            addLog(`Episode change ("${newTitle}") — host-only guest, not creating a lobby (controller drives).`, 'info');
+            addLog(`Episode change ("${lobbyTitle}") — host-only guest, not creating a lobby (controller drives).`, 'info');
             sendResponse({ status: 'host_only_guest_skip' });
             return;
         }
@@ -2218,18 +2262,18 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         // Live peer check, so the moment someone joins the next transition syncs.
         const otherCount = currentRoom && Array.isArray(currentRoom.peers) ? currentRoom.peers.filter(p => (typeof p === 'object' ? p.peerId : p) !== peerId).length : 0;
         if (otherCount === 0) {
-            addLog(`Episode change ("${newTitle}") — alone in room, playing through without a lobby.`, 'info');
+            addLog(`Episode change ("${lobbyTitle}") — alone in room, playing through without a lobby.`, 'info');
             sendResponse({ status: 'solo_no_lobby' });
             return;
         }
 
         // If lobby already exists for this title, just mark self ready
-        if (episodeLobby && sameEpisode(episodeLobby.expectedTitle, newTitle)) {
+        if (episodeLobby && sameEpisode(episodeLobby.expectedTitle, lobbyTitle)) {
             if (!episodeLobby.readyPeers.includes(peerId)) {
                 episodeLobby.readyPeers.push(peerId);
                 persistEpisodeLobby();
                 broadcastLobbyUpdate();
-                emit(EVENTS.EPISODE_READY, { peerId, title: newTitle });
+                emit(EVENTS.EPISODE_READY, { peerId, title: lobbyTitle });
                 checkEpisodeLobbyCompletion();
             }
             sendResponse({ status: 'ready_sent' });
@@ -2241,26 +2285,26 @@ async function handleAsyncMessage(message, sender, sendResponse) {
 
         // Create new lobby
         episodeLobby = {
-            expectedTitle: newTitle,
+            expectedTitle: lobbyTitle,
             initiatorPeerId: peerId,
             readyPeers: [peerId], // We are already ready
             createdAt: Date.now()
         };
         persistEpisodeLobby();
         broadcastLobbyUpdate();
-        addLog(`Episode lobby created: "${newTitle}"`, 'info');
+        addLog(`Episode lobby created: "${lobbyTitle}"`, 'info');
 
         // Tell content script to pause the video and start polling
         // (This is the only place we pause — after confirming the feature is enabled)
         if (sender.tab && sender.tab.id) {
             chrome.tabs.sendMessage(sender.tab.id, {
                 type: 'PAUSE_FOR_LOBBY',
-                expectedTitle: newTitle
+                expectedTitle: lobbyTitle
             }).catch(() => {});
         }
 
         // Broadcast to room
-        emit(EVENTS.EPISODE_LOBBY, { peerId, expectedTitle: newTitle });
+        emit(EVENTS.EPISODE_LOBBY, { peerId, expectedTitle: lobbyTitle });
 
         // Start timeout (Q1: Option B — cancel on timeout)
         episodeLobbyTimeout = setTimeout(() => cancelEpisodeLobby('Timeout — not all peers loaded the episode'), EPISODE_LOBBY_TIMEOUT);
@@ -2273,15 +2317,44 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         // Content script confirmed it loaded the lobby episode
         if (episodeLobby && message.payload && sameEpisode(message.payload.title, episodeLobby.expectedTitle)) {
             if (!episodeLobby.readyPeers.includes(peerId)) {
+                const settings = await getSettings();
+                const readyTitle = sanitizeSharedTitle(message.payload.title, settings.titlePrivacyMode);
                 episodeLobby.readyPeers.push(peerId);
                 persistEpisodeLobby();
                 broadcastLobbyUpdate();
-                emit(EVENTS.EPISODE_READY, { peerId, title: message.payload.title });
-                addLog(`Local episode ready: "${message.payload.title}"`, 'success');
+                emit(EVENTS.EPISODE_READY, { peerId, title: readyTitle });
+                addLog(`Local episode ready: "${readyTitle || episodeLobby.expectedTitle}"`, 'success');
                 checkEpisodeLobbyCompletion();
             }
         }
         sendResponse({ status: 'ok' });
+    } else if (message.type === 'TITLE_PRIVACY_CHANGED') {
+        const settings = await getSettings();
+        if (currentRoom && settings.titlePrivacyMode === 'hidden') {
+            const sharedTitles = getSharedTitleFields(settings);
+            emit(EVENTS.PEER_STATUS, {
+                peerId,
+                status: 'heartbeat',
+                username: settings.username,
+                tabTitle: sharedTitles.tabTitle,
+                mediaTitle: sharedTitles.mediaTitle,
+                desynced: hcmDesynced
+            });
+        }
+        if (currentRoom && currentTabId) {
+            chrome.tabs.sendMessage(currentTabId, { type: 'REQUEST_HEARTBEAT' }).catch(() => {});
+        } else if (currentRoom && settings.titlePrivacyMode !== 'hidden') {
+            const sharedTitles = getSharedTitleFields(settings);
+            emit(EVENTS.PEER_STATUS, {
+                peerId,
+                status: 'heartbeat',
+                username: settings.username,
+                tabTitle: sharedTitles.tabTitle,
+                mediaTitle: sharedTitles.mediaTitle,
+                desynced: hcmDesynced
+            });
+        }
+        sendResponse({ status: 'ok' });
     } else if (message.type === 'CONTENT_BOOT') {
         // Content script re-injected, check if there's an active lobby
         if (episodeLobby) {
diff --git a/extension/locales/de.json b/extension/locales/de.json
index 22fdb35..0328c21 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Demnächst",
   "BTN_RESTART_TOUR": "Einführung neu starten",
   "BTN_RESTART_TOUR_TOOLTIP": "Startet die Einführung für neue Benutzer erneut",
-  "HINT_SELECT_VIDEO": "Wähle hier dein Video aus!"
+  "HINT_SELECT_VIDEO": "Wähle hier dein Video aus!",
+  "LABEL_TITLE_PRIVACY": "Geteilte Titel",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Lege fest, wie Tab- und Medientitel mit dem Raum geteilt werden. Versteckt leert Titel auf dem Server und deaktiviert das Erstellen von Episoden-Lobbys durch deinen Client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Volle Titel",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Nur Episode",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Versteckt"
 }
diff --git a/extension/locales/en.json b/extension/locales/en.json
index 5e7ffe2..8ed8b90 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Coming soon",
   "BTN_RESTART_TOUR": "Restart Tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Restart the onboarding tutorial",
-  "HINT_SELECT_VIDEO": "Select your video here!"
+  "HINT_SELECT_VIDEO": "Select your video here!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/es.json b/extension/locales/es.json
index 95b5e0b..b32e509 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Próximamente",
   "BTN_RESTART_TOUR": "Reiniciar tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Reiniciar el tutorial de inicio",
-  "HINT_SELECT_VIDEO": "¡Selecciona tu video aquí!"
+  "HINT_SELECT_VIDEO": "¡Selecciona tu video aquí!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index 8c2dbba..0677f61 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Bientôt disponible",
   "BTN_RESTART_TOUR": "Redémarrer le tutoriel",
   "BTN_RESTART_TOUR_TOOLTIP": "Recommencer le tutoriel d'intégration",
-  "HINT_SELECT_VIDEO": "Sélectionnez votre vidéo ici !"
+  "HINT_SELECT_VIDEO": "Sélectionnez votre vidéo ici !",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/it.json b/extension/locales/it.json
index 6734f1e..f1c2536 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Prossimamente",
   "BTN_RESTART_TOUR": "Riavvia Tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Riavvia il tutorial introduttivo",
-  "HINT_SELECT_VIDEO": "Scegli il tuo video qui!"
+  "HINT_SELECT_VIDEO": "Scegli il tuo video qui!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index 12c4bf7..932c67a 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "近日公開",
   "BTN_RESTART_TOUR": "チュートリアルを再起動",
   "BTN_RESTART_TOUR_TOOLTIP": "オンボーディングチュートリアルを再起動する",
-  "HINT_SELECT_VIDEO": "ここで動画を選択してください！"
+  "HINT_SELECT_VIDEO": "ここで動画を選択してください！",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index 8c648f0..d77405f 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "출시 예정",
   "BTN_RESTART_TOUR": "튜토리얼 다시 시작",
   "BTN_RESTART_TOUR_TOOLTIP": "온보딩 튜토리얼을 다시 시작합니다",
-  "HINT_SELECT_VIDEO": "여기에서 비디오를 선택하세요!"
+  "HINT_SELECT_VIDEO": "여기에서 비디오를 선택하세요!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index c54da24..3718678 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Binnenkort beschikbaar",
   "BTN_RESTART_TOUR": "Tutorial opnieuw starten",
   "BTN_RESTART_TOUR_TOOLTIP": "Start de introductie-tutorial opnieuw",
-  "HINT_SELECT_VIDEO": "Selecteer hier je video!"
+  "HINT_SELECT_VIDEO": "Selecteer hier je video!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index b061ea9..baccdb5 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Wkrótce",
   "BTN_RESTART_TOUR": "Uruchom samouczek ponownie",
   "BTN_RESTART_TOUR_TOOLTIP": "Uruchom ponownie samouczek powitalny",
-  "HINT_SELECT_VIDEO": "Wybierz swoje wideo tutaj!"
+  "HINT_SELECT_VIDEO": "Wybierz swoje wideo tutaj!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index 2165844..bcf3cc3 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Em breve",
   "BTN_RESTART_TOUR": "Reiniciar tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Reiniciar o tutorial de introdução",
-  "HINT_SELECT_VIDEO": "Selecione seu vídeo aqui!"
+  "HINT_SELECT_VIDEO": "Selecione seu vídeo aqui!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index 2b647f4..77b1a58 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Em breve",
   "BTN_RESTART_TOUR": "Reiniciar Tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Reiniciar o tutorial introdutório",
-  "HINT_SELECT_VIDEO": "Selecione o seu vídeo aqui!"
+  "HINT_SELECT_VIDEO": "Selecione o seu vídeo aqui!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index f3451b5..be7dfd8 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Скоро",
   "BTN_RESTART_TOUR": "Перезапустить обучение",
   "BTN_RESTART_TOUR_TOOLTIP": "Запустить приветственное руководство заново",
-  "HINT_SELECT_VIDEO": "Выберите ваше видео здесь!"
+  "HINT_SELECT_VIDEO": "Выберите ваше видео здесь!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index 6f53a50..aabeb67 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Çok yakında",
   "BTN_RESTART_TOUR": "Eğitimi Yeniden Başlat",
   "BTN_RESTART_TOUR_TOOLTIP": "Tanıtım eğitimini yeniden başlat",
-  "HINT_SELECT_VIDEO": "Videonuzu buradan seçin!"
+  "HINT_SELECT_VIDEO": "Videonuzu buradan seçin!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
index 9088b9b..29d436b 100644
--- a/extension/locales/uk.json
+++ b/extension/locales/uk.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "Скоро буде",
   "BTN_RESTART_TOUR": "Перезапустіть підручник",
   "BTN_RESTART_TOUR_TOOLTIP": "Перезапустіть навчальний посібник із адаптації",
-  "HINT_SELECT_VIDEO": "Виберіть своє відео тут!"
+  "HINT_SELECT_VIDEO": "Виберіть своє відео тут!",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
index 8aba7be..e12ecfa 100644
--- a/extension/locales/zh.json
+++ b/extension/locales/zh.json
@@ -229,5 +229,10 @@
   "AUDIO_COMING_SOON": "即将推出",
   "BTN_RESTART_TOUR": "重启教程",
   "BTN_RESTART_TOUR_TOOLTIP": "重新启动入门教程",
-  "HINT_SELECT_VIDEO": "在这里选择您的视频！"
+  "HINT_SELECT_VIDEO": "在这里选择您的视频！",
+  "LABEL_TITLE_PRIVACY": "Shared Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
 }
diff --git a/extension/popup.html b/extension/popup.html
index c6a50ad..6e32457 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -566,6 +566,15 @@
             </label>
         </div>
 
+        <div class="form-group" style="display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
+            <label style="margin-bottom: 0; cursor: help;" title="Choose how tab and media titles are shared with the room." data-i18n="LABEL_TITLE_PRIVACY" data-i18n-title="LABEL_TITLE_PRIVACY_TOOLTIP">Shared Titles</label>
+            <select id="titlePrivacyMode" style="width: 165px; background: var(--bg); border: 1px solid #334155; color: white; padding: 6px 10px; border-radius: 8px; font-size: 12px; cursor: pointer; outline: none; font-family: inherit;">
+                <option value="full" data-i18n="OPTION_TITLE_PRIVACY_FULL">Full titles</option>
+                <option value="episode" data-i18n="OPTION_TITLE_PRIVACY_EPISODE">Episode only</option>
+                <option value="hidden" data-i18n="OPTION_TITLE_PRIVACY_HIDDEN">Hidden</option>
+            </select>
+        </div>
+
         <div class="form-group" style="display: flex; align-items: center; justify-content: space-between; background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
             <label style="margin-bottom: 0; cursor: help;" title="Automatically copies the invite link to your clipboard when creating a new room." data-i18n="LABEL_AUTO_COPY_INVITE" data-i18n-title="LABEL_AUTO_COPY_INVITE_TOOLTIP">Auto-Copy Invite Link</label>
             <label class="toggle-switch">
diff --git a/extension/popup.js b/extension/popup.js
index edaef4a..1b2fd42 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -54,6 +54,7 @@ const elements = {
     playBtn: document.getElementById('playBtn'),
     pauseBtn: document.getElementById('pauseBtn'),
     autoSyncNextEpisode: document.getElementById('autoSyncNextEpisode'),
+    titlePrivacyMode: document.getElementById('titlePrivacyMode'),
     episodeLobbyCard: document.getElementById('episodeLobbyCard'),
     lobbyTitle: document.getElementById('lobbyTitle'),
     lobbyPeerStatus: document.getElementById('lobbyPeerStatus'),
@@ -184,7 +185,7 @@ function setRoomRefreshCooldown() {
 async function init() {
     // Local-only by design — settings and room credentials never come from
     // storage.sync (only onboardingComplete + dismissedHints live there).
-    const localData = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username', 'filterNoise', 'autoSyncNextEpisode', 'forceSyncMode', 'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings', 'activeTab']);
+    const localData = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username', 'filterNoise', 'autoSyncNextEpisode', 'titlePrivacyMode', 'forceSyncMode', 'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings', 'activeTab']);
 
     let activeLang = localData.locale;
     if (!activeLang) {
@@ -209,6 +210,7 @@ async function init() {
     elements.username.value = username;
     if (elements.filterNoise) elements.filterNoise.checked = localData.filterNoise !== false;
     if (elements.autoSyncNextEpisode) elements.autoSyncNextEpisode.checked = localData.autoSyncNextEpisode !== false;
+    if (elements.titlePrivacyMode) elements.titlePrivacyMode.value = localData.titlePrivacyMode || 'full';
     if (elements.forceSyncMode) elements.forceSyncMode.value = localData.forceSyncMode || 'jump-to-others';
     if (elements.browserNotifications) elements.browserNotifications.checked = localData.browserNotifications === true;
     if (elements.autoCopyInvite) elements.autoCopyInvite.checked = localData.autoCopyInvite !== false;
@@ -1222,6 +1224,14 @@ elements.autoSyncNextEpisode.addEventListener('change', () => {
     chrome.storage.local.set({ autoSyncNextEpisode: elements.autoSyncNextEpisode.checked });
 });
 
+if (elements.titlePrivacyMode) {
+    elements.titlePrivacyMode.addEventListener('change', () => {
+        chrome.storage.local.set({ titlePrivacyMode: elements.titlePrivacyMode.value }, () => {
+            chrome.runtime.sendMessage({ type: 'TITLE_PRIVACY_CHANGED' }).catch(() => {});
+        });
+    });
+}
+
 elements.browserNotifications.addEventListener('change', () => {
     chrome.storage.local.set({ browserNotifications: elements.browserNotifications.checked });
 });
diff --git a/extension/title-privacy.js b/extension/title-privacy.js
new file mode 100644
index 0000000..a4b5eba
--- /dev/null
+++ b/extension/title-privacy.js
@@ -0,0 +1,35 @@
+import { extractEpisodeId } from './episode-utils.js';
+
+export const TITLE_PRIVACY_MODES = Object.freeze({
+    FULL: 'full',
+    EPISODE: 'episode',
+    HIDDEN: 'hidden'
+});
+
+export function normalizeTitlePrivacyMode(mode) {
+    return Object.values(TITLE_PRIVACY_MODES).includes(mode)
+        ? mode
+        : TITLE_PRIVACY_MODES.FULL;
+}
+
+export function sanitizeSharedTitle(title, mode) {
+    const normalizedMode = normalizeTitlePrivacyMode(mode);
+    if (normalizedMode === TITLE_PRIVACY_MODES.HIDDEN) return null;
+
+    if (typeof title !== 'string' || title.length === 0) return null;
+    if (normalizedMode === TITLE_PRIVACY_MODES.EPISODE) {
+        return extractEpisodeId(title) || null;
+    }
+    return title;
+}
+
+export function applyTitlePrivacyToPayload(payload, mode, keys = ['tabTitle', 'mediaTitle', 'expectedTitle', 'title']) {
+    const source = payload && typeof payload === 'object' ? payload : {};
+    const next = { ...source };
+    keys.forEach(key => {
+        if (Object.prototype.hasOwnProperty.call(next, key)) {
+            next[key] = sanitizeSharedTitle(next[key], mode);
+        }
+    });
+    return next;
+}
diff --git a/scripts/test-title-privacy.mjs b/scripts/test-title-privacy.mjs
new file mode 100644
index 0000000..7650fdd
--- /dev/null
+++ b/scripts/test-title-privacy.mjs
@@ -0,0 +1,52 @@
+import assert from 'node:assert/strict';
+import {
+    TITLE_PRIVACY_MODES,
+    applyTitlePrivacyToPayload,
+    normalizeTitlePrivacyMode,
+    sanitizeSharedTitle
+} from '../extension/title-privacy.js';
+
+assert.equal(normalizeTitlePrivacyMode(undefined), TITLE_PRIVACY_MODES.FULL);
+assert.equal(normalizeTitlePrivacyMode('unknown'), TITLE_PRIVACY_MODES.FULL);
+assert.equal(normalizeTitlePrivacyMode(TITLE_PRIVACY_MODES.HIDDEN), TITLE_PRIVACY_MODES.HIDDEN);
+
+assert.equal(sanitizeSharedTitle('Example Movie', 'full'), 'Example Movie');
+assert.equal(sanitizeSharedTitle('', 'full'), null);
+assert.equal(sanitizeSharedTitle(null, 'full'), null);
+
+assert.equal(sanitizeSharedTitle('Show Name - S01/E04 - Title', 'episode'), 'S01E04');
+assert.equal(sanitizeSharedTitle('Folge 7 - Private Server', 'episode'), 'EP007');
+assert.equal(sanitizeSharedTitle('Example Movie', 'episode'), null);
+
+assert.equal(sanitizeSharedTitle('Show Name - S01E04', 'hidden'), null);
+assert.equal(sanitizeSharedTitle('Private Tab Title', 'hidden'), null);
+
+assert.deepEqual(
+    applyTitlePrivacyToPayload({
+        tabTitle: 'Private Jellyfin - S01E04',
+        mediaTitle: 'Show Name - S01E04',
+        currentTime: 42
+    }, 'episode'),
+    {
+        tabTitle: 'S01E04',
+        mediaTitle: 'S01E04',
+        currentTime: 42
+    }
+);
+
+assert.deepEqual(
+    applyTitlePrivacyToPayload({
+        tabTitle: 'Private Tab',
+        mediaTitle: 'Private Media',
+        expectedTitle: 'S01E04',
+        title: 'S01E04'
+    }, 'hidden'),
+    {
+        tabTitle: null,
+        mediaTitle: null,
+        expectedTitle: null,
+        title: null
+    }
+);
+
+console.log('title-privacy tests passed');
diff --git a/scripts/verify-release.mjs b/scripts/verify-release.mjs
index 94ade13..ea7b45e 100644
--- a/scripts/verify-release.mjs
+++ b/scripts/verify-release.mjs
@@ -13,6 +13,7 @@ const checks = [
   }],
   ['rate-limiter unit tests', 'node', ['scripts/test-rate-limiter.mjs']],
   ['episode-utils unit tests', 'node', ['scripts/test-episode-utils.mjs']],
+  ['title privacy unit tests', 'node', ['scripts/test-title-privacy.mjs']],
   ['server WebSocket integration', 'node', ['scripts/test-server-ws.mjs']],
   ['names generator', 'node', ['scripts/test-names.mjs']],
   ['content video finder', 'node', ['scripts/test-content-video-finder.cjs']],

From e555906553a80411251955b0cee71f0ab6949ceb Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Mon, 29 Jun 2026 13:43:10 +0200
Subject: [PATCH 077/151] fix(extension): harden title privacy edge cases

---
 extension/background.js        | 22 ++++++++++++++++++++--
 extension/locales/es.json      | 10 +++++-----
 extension/locales/fr.json      | 10 +++++-----
 extension/locales/it.json      | 10 +++++-----
 extension/locales/ja.json      | 10 +++++-----
 extension/locales/ko.json      | 10 +++++-----
 extension/locales/nl.json      | 10 +++++-----
 extension/locales/pl.json      | 10 +++++-----
 extension/locales/pt-BR.json   | 10 +++++-----
 extension/locales/pt.json      | 10 +++++-----
 extension/locales/ru.json      | 10 +++++-----
 extension/locales/tr.json      | 10 +++++-----
 extension/locales/uk.json      | 10 +++++-----
 extension/locales/zh.json      | 10 +++++-----
 extension/popup.js             |  3 ++-
 scripts/test-title-privacy.mjs | 12 ++++++++++++
 16 files changed, 99 insertions(+), 68 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index d1193db..0173498 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -391,6 +391,19 @@ function withTitlePrivacy(payload, settings, keys) {
     return applyTitlePrivacyToPayload(payload, settings?.titlePrivacyMode, keys);
 }
 
+function emitEpisodeLobbyForCurrentPrivacy() {
+    if (!episodeLobby || episodeLobby.initiatorPeerId !== peerId) return;
+    getSettings().then(settings => {
+        if (!episodeLobby || episodeLobby.initiatorPeerId !== peerId) return;
+        const expectedTitle = sanitizeSharedTitle(episodeLobby.expectedTitle, settings.titlePrivacyMode);
+        if (expectedTitle) {
+            emit(EVENTS.EPISODE_LOBBY, { peerId, expectedTitle });
+        }
+    }).catch(err => {
+        addLog('Episode lobby privacy error: ' + err.message, 'error');
+    });
+}
+
 // Privacy + correctness: only onboardingComplete and dismissedHints belong in
 // storage.sync. Everything else is per-device local storage. This actively
 // removes legacy keys that older versions wrote to sync (and that would
@@ -1256,7 +1269,7 @@ function handleServerEvent(event, data) {
                         }
 
                         if (episodeLobby && episodeLobby.initiatorPeerId === peerId) {
-                            emit(EVENTS.EPISODE_LOBBY, { peerId, expectedTitle: episodeLobby.expectedTitle });
+                            emitEpisodeLobbyForCurrentPrivacy();
                         }
                     }
                 } else if (data.status === 'left') {
@@ -1637,7 +1650,6 @@ chrome.alarms.onAlarm.addListener(async (alarm) => {
                     status: 'heartbeat',
                     username: settings.username,
                     tabTitle: sharedTitles.tabTitle,
-                    mediaTitle: sharedTitles.mediaTitle,
                     desynced: hcmDesynced
                 });
             }
@@ -2330,6 +2342,12 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         sendResponse({ status: 'ok' });
     } else if (message.type === 'TITLE_PRIVACY_CHANGED') {
         const settings = await getSettings();
+        if (episodeLobby && episodeLobby.initiatorPeerId === peerId) {
+            const nextLobbyTitle = sanitizeSharedTitle(episodeLobby.expectedTitle, settings.titlePrivacyMode);
+            if (!nextLobbyTitle || nextLobbyTitle !== episodeLobby.expectedTitle) {
+                cancelEpisodeLobby('Title privacy changed');
+            }
+        }
         if (currentRoom && settings.titlePrivacyMode === 'hidden') {
             const sharedTitles = getSharedTitleFields(settings);
             emit(EVENTS.PEER_STATUS, {
diff --git a/extension/locales/es.json b/extension/locales/es.json
index b32e509..98bbe96 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Reiniciar tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Reiniciar el tutorial de inicio",
   "HINT_SELECT_VIDEO": "¡Selecciona tu video aquí!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "T?tulos compartidos",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Elige c?mo se comparten los t?tulos de pesta?a y multimedia con la sala. El modo oculto borra los t?tulos del servidor y desactiva la creaci?n de salas de episodio desde tu cliente.",
+  "OPTION_TITLE_PRIVACY_FULL": "T?tulos completos",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Solo episodio",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Ocultos"
 }
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index 0677f61..491c7ec 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Redémarrer le tutoriel",
   "BTN_RESTART_TOUR_TOOLTIP": "Recommencer le tutoriel d'intégration",
   "HINT_SELECT_VIDEO": "Sélectionnez votre vidéo ici !",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "Titres partag?s",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choisissez comment les titres des onglets et des m?dias sont partag?s avec le salon. Le mode masqu? efface les titres du serveur et d?sactive la cr?ation de salons d??pisode depuis votre client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Titres complets",
+  "OPTION_TITLE_PRIVACY_EPISODE": "?pisode seulement",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Masqu?s"
 }
diff --git a/extension/locales/it.json b/extension/locales/it.json
index f1c2536..9777564 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Riavvia Tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Riavvia il tutorial introduttivo",
   "HINT_SELECT_VIDEO": "Scegli il tuo video qui!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "Titoli condivisi",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Scegli come condividere con la stanza i titoli delle schede e dei contenuti multimediali. La modalit? nascosta cancella i titoli sul server e disattiva la creazione di lobby episodio dal tuo client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Titoli completi",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Solo episodio",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Nascosti"
 }
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index 932c67a..f784484 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "チュートリアルを再起動",
   "BTN_RESTART_TOUR_TOOLTIP": "オンボーディングチュートリアルを再起動する",
   "HINT_SELECT_VIDEO": "ここで動画を選択してください！",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "??????",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "???????????????????????????????????????????????????????????????????????????????????",
+  "OPTION_TITLE_PRIVACY_FULL": "???????",
+  "OPTION_TITLE_PRIVACY_EPISODE": "???????",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "???"
 }
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index d77405f..fb3c79c 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "튜토리얼 다시 시작",
   "BTN_RESTART_TOUR_TOOLTIP": "온보딩 튜토리얼을 다시 시작합니다",
   "HINT_SELECT_VIDEO": "여기에서 비디오를 선택하세요!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "?? ??",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "? ??? ??? ??? ?? ??? ???? ?????. ?? ??? ??? ??? ??? ? ??????? ???? ??? ??? ??? ???.",
+  "OPTION_TITLE_PRIVACY_FULL": "?? ??",
+  "OPTION_TITLE_PRIVACY_EPISODE": "?????",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "??"
 }
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index 3718678..7b9faa6 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Tutorial opnieuw starten",
   "BTN_RESTART_TOUR_TOOLTIP": "Start de introductie-tutorial opnieuw",
   "HINT_SELECT_VIDEO": "Selecteer hier je video!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "Gedeelde titels",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Kies hoe tab- en mediatitels met de kamer worden gedeeld. Verborgen modus wist titels op de server en schakelt het maken van afleveringslobby?s vanaf jouw client uit.",
+  "OPTION_TITLE_PRIVACY_FULL": "Volledige titels",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Alleen aflevering",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Verborgen"
 }
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index baccdb5..908aef4 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Uruchom samouczek ponownie",
   "BTN_RESTART_TOUR_TOOLTIP": "Uruchom ponownie samouczek powitalny",
   "HINT_SELECT_VIDEO": "Wybierz swoje wideo tutaj!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "Udost?pniane tytu?y",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Wybierz, jak tytu?y kart i multimedi?w s? udost?pniane w pokoju. Tryb ukryty czy?ci tytu?y na serwerze i wy??cza tworzenie poczekalni odcinka z tego klienta.",
+  "OPTION_TITLE_PRIVACY_FULL": "Pe?ne tytu?y",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Tylko odcinek",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Ukryte"
 }
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index bcf3cc3..b08d5ec 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Reiniciar tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Reiniciar o tutorial de introdução",
   "HINT_SELECT_VIDEO": "Selecione seu vídeo aqui!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "T?tulos compartilhados",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Escolha como os t?tulos da aba e da m?dia s?o compartilhados com a sala. O modo oculto limpa os t?tulos no servidor e desativa a cria??o de lobby de epis?dio pelo seu cliente.",
+  "OPTION_TITLE_PRIVACY_FULL": "T?tulos completos",
+  "OPTION_TITLE_PRIVACY_EPISODE": "S? epis?dio",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Ocultos"
 }
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index 77b1a58..3228382 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Reiniciar Tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Reiniciar o tutorial introdutório",
   "HINT_SELECT_VIDEO": "Selecione o seu vídeo aqui!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "T?tulos partilhados",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Escolhe como os t?tulos do separador e do conte?do multim?dia s?o partilhados com a sala. O modo oculto limpa os t?tulos no servidor e desativa a cria??o de salas de epis?dio pelo teu cliente.",
+  "OPTION_TITLE_PRIVACY_FULL": "T?tulos completos",
+  "OPTION_TITLE_PRIVACY_EPISODE": "S? epis?dio",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Ocultos"
 }
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index be7dfd8..b4d655e 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Перезапустить обучение",
   "BTN_RESTART_TOUR_TOOLTIP": "Запустить приветственное руководство заново",
   "HINT_SELECT_VIDEO": "Выберите ваше видео здесь!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "????? ????????",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "????????, ??? ???????? ??????? ? ????? ?????????? ? ???????. ??????? ????? ??????? ???????? ?? ??????? ? ????????? ???????? ????? ???????? ? ?????? ???????.",
+  "OPTION_TITLE_PRIVACY_FULL": "?????? ????????",
+  "OPTION_TITLE_PRIVACY_EPISODE": "?????? ??????",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "??????"
 }
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index aabeb67..e63baf2 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Eğitimi Yeniden Başlat",
   "BTN_RESTART_TOUR_TOOLTIP": "Tanıtım eğitimini yeniden başlat",
   "HINT_SELECT_VIDEO": "Videonuzu buradan seçin!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "Payla??lan ba?l?klar",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Sekme ve medya ba?l?klar?n?n odayla nas?l payla??laca??n? se?in. Gizli mod sunucudaki ba?l?klar? temizler ve istemcinizden b?l?m lobisi olu?turmay? devre d??? b?rak?r.",
+  "OPTION_TITLE_PRIVACY_FULL": "Tam ba?l?klar",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Sadece b?l?m",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Gizli"
 }
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
index 29d436b..3321bc7 100644
--- a/extension/locales/uk.json
+++ b/extension/locales/uk.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Перезапустіть підручник",
   "BTN_RESTART_TOUR_TOOLTIP": "Перезапустіть навчальний посібник із адаптації",
   "HINT_SELECT_VIDEO": "Виберіть своє відео тут!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "??????? ?????",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "????????, ?? ????? ??????? ? ????? ??????????? ?? ???????. ?????????? ????? ?????? ????? ?? ??????? ? ??????? ????????? ???? ???????? ?? ?????? ???????.",
+  "OPTION_TITLE_PRIVACY_FULL": "????? ?????",
+  "OPTION_TITLE_PRIVACY_EPISODE": "???? ??????",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "?????????"
 }
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
index e12ecfa..9b2b2e3 100644
--- a/extension/locales/zh.json
+++ b/extension/locales/zh.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "重启教程",
   "BTN_RESTART_TOUR_TOOLTIP": "重新启动入门教程",
   "HINT_SELECT_VIDEO": "在这里选择您的视频！",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "????",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "??????????????????????????????????????????????????",
+  "OPTION_TITLE_PRIVACY_FULL": "????",
+  "OPTION_TITLE_PRIVACY_EPISODE": "???",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "??"
 }
diff --git a/extension/popup.js b/extension/popup.js
index 1b2fd42..35240eb 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -89,6 +89,7 @@ let pendingConnectionErrorMsg = null;
 let roomListRefreshTimer = null;
 let roomListRefreshInterval = null;
 const ROOM_LIST_REFRESH_COOLDOWN_MS = 11000;
+const TITLE_PRIVACY_MODES = ['full', 'episode', 'hidden'];
 const FEATURE_HINTS = [
     {
         key: 'audio_processing',
@@ -210,7 +211,7 @@ async function init() {
     elements.username.value = username;
     if (elements.filterNoise) elements.filterNoise.checked = localData.filterNoise !== false;
     if (elements.autoSyncNextEpisode) elements.autoSyncNextEpisode.checked = localData.autoSyncNextEpisode !== false;
-    if (elements.titlePrivacyMode) elements.titlePrivacyMode.value = localData.titlePrivacyMode || 'full';
+    if (elements.titlePrivacyMode) elements.titlePrivacyMode.value = TITLE_PRIVACY_MODES.includes(localData.titlePrivacyMode) ? localData.titlePrivacyMode : 'full';
     if (elements.forceSyncMode) elements.forceSyncMode.value = localData.forceSyncMode || 'jump-to-others';
     if (elements.browserNotifications) elements.browserNotifications.checked = localData.browserNotifications === true;
     if (elements.autoCopyInvite) elements.autoCopyInvite.checked = localData.autoCopyInvite !== false;
diff --git a/scripts/test-title-privacy.mjs b/scripts/test-title-privacy.mjs
index 7650fdd..8f1fce1 100644
--- a/scripts/test-title-privacy.mjs
+++ b/scripts/test-title-privacy.mjs
@@ -34,6 +34,18 @@ assert.deepEqual(
     }
 );
 
+assert.deepEqual(
+    applyTitlePrivacyToPayload({
+        tabTitle: 'Private Jellyfin - S01E04',
+        status: 'heartbeat'
+    }, 'episode'),
+    {
+        tabTitle: 'S01E04',
+        status: 'heartbeat'
+    },
+    'privacy filtering must not add absent title keys'
+);
+
 assert.deepEqual(
     applyTitlePrivacyToPayload({
         tabTitle: 'Private Tab',

From 3e4b97b11a700c97358b1e9bb6489d2da08ab08b Mon Sep 17 00:00:00 2001
From: Skrockle <Soloma@live.de>
Date: Wed, 1 Jul 2026 18:37:25 +0200
Subject: [PATCH 078/151] Fix: Remove redundant TITLE_PRIVACY_MODES array in
 popup.js

- Remove duplicate local TITLE_PRIVACY_MODES array definition
- Use Object.values(TITLE_PRIVACY_MODES).includes() for validation instead
- Keeps single source of truth in title-privacy.js

Co-Authored-By: Claude <noreply@anthropic.com>
---
 extension/popup.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/extension/popup.js b/extension/popup.js
index 35240eb..a5b02e7 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -89,7 +89,6 @@ let pendingConnectionErrorMsg = null;
 let roomListRefreshTimer = null;
 let roomListRefreshInterval = null;
 const ROOM_LIST_REFRESH_COOLDOWN_MS = 11000;
-const TITLE_PRIVACY_MODES = ['full', 'episode', 'hidden'];
 const FEATURE_HINTS = [
     {
         key: 'audio_processing',
@@ -211,7 +210,7 @@ async function init() {
     elements.username.value = username;
     if (elements.filterNoise) elements.filterNoise.checked = localData.filterNoise !== false;
     if (elements.autoSyncNextEpisode) elements.autoSyncNextEpisode.checked = localData.autoSyncNextEpisode !== false;
-    if (elements.titlePrivacyMode) elements.titlePrivacyMode.value = TITLE_PRIVACY_MODES.includes(localData.titlePrivacyMode) ? localData.titlePrivacyMode : 'full';
+    if (elements.titlePrivacyMode) elements.titlePrivacyMode.value = Object.values(TITLE_PRIVACY_MODES).includes(localData.titlePrivacyMode) ? localData.titlePrivacyMode : 'full';
     if (elements.forceSyncMode) elements.forceSyncMode.value = localData.forceSyncMode || 'jump-to-others';
     if (elements.browserNotifications) elements.browserNotifications.checked = localData.browserNotifications === true;
     if (elements.autoCopyInvite) elements.autoCopyInvite.checked = localData.autoCopyInvite !== false;

From 4bae88e107aa13e4d0a07bca6b1c0c09c858b277 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Wed, 1 Jul 2026 18:50:09 +0200
Subject: [PATCH 079/151] Fix title privacy popup import

---
 extension/popup.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/extension/popup.js b/extension/popup.js
index a5b02e7..f725b74 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -2,6 +2,7 @@ import { EVENTS, OFFICIAL_LANDING_PAGE_URL, SUPPORT_URL, getReviewUrl } from './
 import { BLACKLIST_DOMAINS } from './shared/blacklist.js';
 import { getAvatarForName, generateUsername, USERNAME_ADJECTIVES, USERNAME_NOUNS } from './shared/names.js';
 import { loadLocale, translateDOM, getMessage, getSystemLanguage } from './i18n.js';
+import { TITLE_PRIVACY_MODES } from './title-privacy.js';
 
 
 const elements = {

From 29aba936ce9e6c895c43244ea210c5b46e054b71 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Wed, 1 Jul 2026 18:58:39 +0200
Subject: [PATCH 080/151] Clarify tab and media title privacy setting

---
 extension/locales/de.json | 10 +++++-----
 extension/locales/en.json | 10 +++++-----
 extension/popup.html      |  8 ++++----
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/extension/locales/de.json b/extension/locales/de.json
index 0328c21..d888e33 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Einführung neu starten",
   "BTN_RESTART_TOUR_TOOLTIP": "Startet die Einführung für neue Benutzer erneut",
   "HINT_SELECT_VIDEO": "Wähle hier dein Video aus!",
-  "LABEL_TITLE_PRIVACY": "Geteilte Titel",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Lege fest, wie Tab- und Medientitel mit dem Raum geteilt werden. Versteckt leert Titel auf dem Server und deaktiviert das Erstellen von Episoden-Lobbys durch deinen Client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Volle Titel",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Nur Episode",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Versteckt"
+  "LABEL_TITLE_PRIVACY": "Tab-/Medientitel",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Lege fest, ob Tab- und Medientitel an den Raum gesendet werden. Nicht senden leert beide Titel auf dem Server und deaktiviert Episoden-Lobbys durch deinen Client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Voll senden",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Nur Episoden-ID senden",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Nicht senden"
 }
diff --git a/extension/locales/en.json b/extension/locales/en.json
index 8ed8b90..11a2b43 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -230,9 +230,9 @@
   "BTN_RESTART_TOUR": "Restart Tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Restart the onboarding tutorial",
   "HINT_SELECT_VIDEO": "Select your video here!",
-  "LABEL_TITLE_PRIVACY": "Shared Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose how tab and media titles are shared with the room. Hidden mode clears titles on the server and disables creating episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Episode only",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Hidden"
+  "LABEL_TITLE_PRIVACY": "Tab/Media Titles",
+  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose whether tab and media titles are sent to the room. Do not send clears both titles on the server and disables episode lobbies from your client.",
+  "OPTION_TITLE_PRIVACY_FULL": "Send full titles",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Send episode IDs",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Do not send"
 }
diff --git a/extension/popup.html b/extension/popup.html
index 6e32457..6ec1280 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -567,11 +567,11 @@
         </div>
 
         <div class="form-group" style="display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
-            <label style="margin-bottom: 0; cursor: help;" title="Choose how tab and media titles are shared with the room." data-i18n="LABEL_TITLE_PRIVACY" data-i18n-title="LABEL_TITLE_PRIVACY_TOOLTIP">Shared Titles</label>
+            <label style="margin-bottom: 0; cursor: help;" title="Choose whether tab and media titles are sent to the room." data-i18n="LABEL_TITLE_PRIVACY" data-i18n-title="LABEL_TITLE_PRIVACY_TOOLTIP">Tab/Media Titles</label>
             <select id="titlePrivacyMode" style="width: 165px; background: var(--bg); border: 1px solid #334155; color: white; padding: 6px 10px; border-radius: 8px; font-size: 12px; cursor: pointer; outline: none; font-family: inherit;">
-                <option value="full" data-i18n="OPTION_TITLE_PRIVACY_FULL">Full titles</option>
-                <option value="episode" data-i18n="OPTION_TITLE_PRIVACY_EPISODE">Episode only</option>
-                <option value="hidden" data-i18n="OPTION_TITLE_PRIVACY_HIDDEN">Hidden</option>
+                <option value="full" data-i18n="OPTION_TITLE_PRIVACY_FULL">Send full titles</option>
+                <option value="episode" data-i18n="OPTION_TITLE_PRIVACY_EPISODE">Send episode IDs</option>
+                <option value="hidden" data-i18n="OPTION_TITLE_PRIVACY_HIDDEN">Do not send</option>
             </select>
         </div>
 

From 04d236081444ddbf7810e85bfe7a8b1a50719272 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Wed, 1 Jul 2026 19:16:42 +0200
Subject: [PATCH 081/151] Remove plan for splitting large JavaScript files

Removed the plan to split large JavaScript files into smaller modules due to prioritization changes.
---
 docs/ROADMAP.md | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index 193df0d..d667bcf 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -30,15 +30,6 @@
 
 *Prioritized for upcoming phases.*
 
-### 1. Split large JavaScript files into smaller modules
-
-- **Priority:** P1
-- **Category:** Maintainability / AI Context Optimization
-- **Background:** Core files like `background.js` and `popup.js` have grown large and exceed 800 lines. This makes manual debugging harder and wastes context window space for AI models.
-- **Planned solution:**
-  - Structurally split logic into separate focused modules (e.g., UI Renderer, Message Router, Storage Manager, Socket Client).
-  - Use ES modules for clean separation and better reusability.
-
 ### 2. Invite link with target URL for auto-redirect
 
 - **Priority:** P2

From fa7eea54d860bdc8e582b71407dbe270ba725c3c Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Wed, 1 Jul 2026 19:21:38 +0200
Subject: [PATCH 082/151] Split tab and media title privacy controls

---
 docs/CHANGELOG.md              |  2 +-
 docs/HOW_IT_WORKS.md           |  2 +-
 docs/PRIVACY.md                |  2 +-
 extension/background.js        | 40 ++++++++++++++--------------------
 extension/locales/de.json      | 10 ++++++---
 extension/locales/en.json      | 14 +++++++-----
 extension/locales/es.json      | 14 +++++++-----
 extension/locales/fr.json      | 14 +++++++-----
 extension/locales/it.json      | 14 +++++++-----
 extension/locales/ja.json      | 14 +++++++-----
 extension/locales/ko.json      | 14 +++++++-----
 extension/locales/nl.json      | 14 +++++++-----
 extension/locales/pl.json      | 14 +++++++-----
 extension/locales/pt-BR.json   | 14 +++++++-----
 extension/locales/pt.json      | 14 +++++++-----
 extension/locales/ru.json      | 14 +++++++-----
 extension/locales/tr.json      | 14 +++++++-----
 extension/locales/uk.json      | 14 +++++++-----
 extension/locales/zh.json      | 14 +++++++-----
 extension/popup.html           | 26 +++++++++++++++-------
 extension/popup.js             | 26 ++++++++++++++++------
 extension/title-privacy.js     | 12 +++++++++-
 scripts/test-title-privacy.mjs | 26 ++++++++++++++++------
 23 files changed, 219 insertions(+), 123 deletions(-)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 35ba985..6b84b4f 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -7,7 +7,7 @@ All notable changes to the KoalaSync browser extension and relay server.
 ## Unreleased
 
 ### Added
-- **Extension: Shared title privacy setting** - Advanced users can now choose whether KoalaSync shares full tab/media titles, only detected episode identifiers such as `S01E04`, or no shared titles at all. The default remains full titles for backwards compatibility.
+- **Extension: Privacy title controls** - Advanced users can now disable sending browser tab titles separately from media titles. Media titles can still be sent in full, reduced to detected episode identifiers such as `S01E04`, or hidden entirely. Defaults remain full titles for backwards compatibility.
 
 ---
 
diff --git a/docs/HOW_IT_WORKS.md b/docs/HOW_IT_WORKS.md
index 46f8a94..fa41b44 100644
--- a/docs/HOW_IT_WORKS.md
+++ b/docs/HOW_IT_WORKS.md
@@ -184,7 +184,7 @@ When a user clicks **"Leave"** or closes their browser:
 When watching a series and an episode ends:
 
 1. `content.js` monitors the [Media Session API](https://developer.mozilla.org/en-US/docs/Web/API/Media_Session_API) for title changes.
-2. When a new title is detected, the peer broadcasts `EPISODE_LOBBY` with the expected title after applying the local Shared Titles privacy setting. In episode-only mode this is an identifier such as `S01E04`; in hidden mode the client does not create a new episode lobby.
+2. When a new title is detected, the peer broadcasts `EPISODE_LOBBY` with the expected title after applying the local media title privacy setting. In episode-only mode this is an identifier such as `S01E04`; when media titles are not sent, the client does not create a new episode lobby.
 3. All peers' videos freeze. The UI shows an "Episode Lobby" card with peer readiness status.
 4. Each peer's `content.js` polls for the new title to appear in the `<video>` element's metadata.
 5. Once a peer detects the matching title, they send `EPISODE_READY`.
diff --git a/docs/PRIVACY.md b/docs/PRIVACY.md
index 06a271c..d3a1893 100644
--- a/docs/PRIVACY.md
+++ b/docs/PRIVACY.md
@@ -8,7 +8,7 @@ KoalaSync is designed with a **Security-First & Volatile** architecture. This me
 
 ## 1. Data Processing (In-Memory Only)
 KoalaSync does not use a database. All active session data exists only in the server's RAM and is purged immediately when no longer needed.
-- **Session Data**: To synchronize playback, the server must temporarily hold your `peerId` and `username`. By default, KoalaSync also shares the selected tab title and media title with the room so peers can identify matching videos and coordinate episode transitions. You can change the Shared Titles privacy setting to send only a detected episode identifier (for example `S01E04`) or hide shared titles entirely. Playback metadata (`playbackState`, `currentTime`, `volume`, `muted`) is held per peer for the duration of the session. All of this is deleted as soon as you leave the room.
+- **Session Data**: To synchronize playback, the server must temporarily hold your `peerId` and `username`. By default, KoalaSync also shares the selected tab title and media title with the room so peers can identify matching videos and coordinate episode transitions. Privacy Settings let you disable sending the tab title separately, and choose whether media titles are sent in full, reduced to a detected episode identifier (for example `S01E04`), or not sent. Playback metadata (`playbackState`, `currentTime`, `volume`, `muted`) is held per peer for the duration of the session. All of this is deleted as soon as you leave the room.
 - **Room Passwords**: If you set a room password, it is stored only as an in-memory **keyed SHA-256 HMAC hash**. The server receives the plaintext password only during join validation, never stores it, and keeps only the hash for the short room lifetime.
 - **Routing Maps**: The server maintains ephemeral lookup tables (`socketToRoom`, `peerToSocket`) to route messages between peers. These contain only transport identifiers and are purged on disconnect.
 
diff --git a/extension/background.js b/extension/background.js
index 0173498..2b5f601 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -2,7 +2,7 @@ import { EVENTS, CONTROL_MODES, CAPABILITIES, PROTOCOL_VERSION, OFFICIAL_SERVER_
 import { generateUsername } from './shared/names.js';
 import { loadLocale, getMessage, getSystemLanguage } from './i18n.js';
 import { sameEpisode } from './episode-utils.js';
-import { applyTitlePrivacyToPayload, sanitizeSharedTitle, normalizeTitlePrivacyMode } from './title-privacy.js';
+import { applyTitlePrivacyToPayload, sanitizeSharedTitle, sanitizeTabTitle, normalizeSendTabTitle, normalizeTitlePrivacyMode } from './title-privacy.js';
 import { initTabManager } from './modules/tab-manager.js';
 
 // --- Uninstall URL Initialization ---
@@ -363,39 +363,41 @@ async function getSettings() {
     // (username) must NEVER come from storage.sync — syncing them across devices
     // both leaks them and resurrects dead rooms on reinstall (a fresh install
     // has empty local storage but sync survives in the user's Google account).
-    const data = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username', 'titlePrivacyMode']);
+    const data = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username', 'sendTabTitle', 'mediaTitlePrivacyMode', 'titlePrivacyMode']);
     let username = data.username;
     if (!username) {
         username = generateUsername();
         await chrome.storage.local.set({ username });
     }
+    const legacyTitlePrivacyMode = normalizeTitlePrivacyMode(data.titlePrivacyMode);
+    const mediaTitlePrivacyMode = normalizeTitlePrivacyMode(data.mediaTitlePrivacyMode || legacyTitlePrivacyMode);
     return {
         serverUrl: data.serverUrl || '',
         useCustomServer: data.useCustomServer || false,
         roomId: data.roomId || '',
         password: data.password || '',
         username,
-        titlePrivacyMode: normalizeTitlePrivacyMode(data.titlePrivacyMode)
+        sendTabTitle: normalizeSendTabTitle(data.sendTabTitle, legacyTitlePrivacyMode),
+        mediaTitlePrivacyMode
     };
 }
 
 function getSharedTitleFields(settings, mediaTitle = null) {
-    const mode = settings?.titlePrivacyMode;
     return {
-        tabTitle: sanitizeSharedTitle(currentTabTitle, mode),
-        mediaTitle: sanitizeSharedTitle(mediaTitle, mode)
+        tabTitle: sanitizeTabTitle(currentTabTitle, settings?.sendTabTitle),
+        mediaTitle: sanitizeSharedTitle(mediaTitle, settings?.mediaTitlePrivacyMode)
     };
 }
 
 function withTitlePrivacy(payload, settings, keys) {
-    return applyTitlePrivacyToPayload(payload, settings?.titlePrivacyMode, keys);
+    return applyTitlePrivacyToPayload(payload, settings?.mediaTitlePrivacyMode, keys);
 }
 
 function emitEpisodeLobbyForCurrentPrivacy() {
     if (!episodeLobby || episodeLobby.initiatorPeerId !== peerId) return;
     getSettings().then(settings => {
         if (!episodeLobby || episodeLobby.initiatorPeerId !== peerId) return;
-        const expectedTitle = sanitizeSharedTitle(episodeLobby.expectedTitle, settings.titlePrivacyMode);
+        const expectedTitle = sanitizeSharedTitle(episodeLobby.expectedTitle, settings.mediaTitlePrivacyMode);
         if (expectedTitle) {
             emit(EVENTS.EPISODE_LOBBY, { peerId, expectedTitle });
         }
@@ -412,7 +414,7 @@ const LEGACY_SYNC_KEYS = [
     'serverUrl', 'useCustomServer', 'roomId', 'password', 'username',
     'filterNoise', 'autoSyncNextEpisode', 'forceSyncMode',
     'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings',
-    'titlePrivacyMode'
+    'titlePrivacyMode', 'sendTabTitle', 'mediaTitlePrivacyMode'
 ];
 function purgeLegacySyncKeys() {
     chrome.storage.sync.remove(LEGACY_SYNC_KEYS).catch(() => {});
@@ -2242,9 +2244,9 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         }
 
         const settings = await getSettings();
-        const lobbyTitle = sanitizeSharedTitle(newTitle, settings.titlePrivacyMode);
+        const lobbyTitle = sanitizeSharedTitle(newTitle, settings.mediaTitlePrivacyMode);
         if (!lobbyTitle) {
-            addLog(`Episode change detected but title sharing is ${settings.titlePrivacyMode}; not creating a lobby.`, 'info');
+            addLog(`Episode change detected but media title sharing is ${settings.mediaTitlePrivacyMode}; not creating a lobby.`, 'info');
             sendResponse({ status: 'title_privacy_no_lobby' });
             return;
         }
@@ -2330,7 +2332,7 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         if (episodeLobby && message.payload && sameEpisode(message.payload.title, episodeLobby.expectedTitle)) {
             if (!episodeLobby.readyPeers.includes(peerId)) {
                 const settings = await getSettings();
-                const readyTitle = sanitizeSharedTitle(message.payload.title, settings.titlePrivacyMode);
+                const readyTitle = sanitizeSharedTitle(message.payload.title, settings.mediaTitlePrivacyMode);
                 episodeLobby.readyPeers.push(peerId);
                 persistEpisodeLobby();
                 broadcastLobbyUpdate();
@@ -2343,12 +2345,12 @@ async function handleAsyncMessage(message, sender, sendResponse) {
     } else if (message.type === 'TITLE_PRIVACY_CHANGED') {
         const settings = await getSettings();
         if (episodeLobby && episodeLobby.initiatorPeerId === peerId) {
-            const nextLobbyTitle = sanitizeSharedTitle(episodeLobby.expectedTitle, settings.titlePrivacyMode);
+            const nextLobbyTitle = sanitizeSharedTitle(episodeLobby.expectedTitle, settings.mediaTitlePrivacyMode);
             if (!nextLobbyTitle || nextLobbyTitle !== episodeLobby.expectedTitle) {
                 cancelEpisodeLobby('Title privacy changed');
             }
         }
-        if (currentRoom && settings.titlePrivacyMode === 'hidden') {
+        if (currentRoom) {
             const sharedTitles = getSharedTitleFields(settings);
             emit(EVENTS.PEER_STATUS, {
                 peerId,
@@ -2361,16 +2363,6 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         }
         if (currentRoom && currentTabId) {
             chrome.tabs.sendMessage(currentTabId, { type: 'REQUEST_HEARTBEAT' }).catch(() => {});
-        } else if (currentRoom && settings.titlePrivacyMode !== 'hidden') {
-            const sharedTitles = getSharedTitleFields(settings);
-            emit(EVENTS.PEER_STATUS, {
-                peerId,
-                status: 'heartbeat',
-                username: settings.username,
-                tabTitle: sharedTitles.tabTitle,
-                mediaTitle: sharedTitles.mediaTitle,
-                desynced: hcmDesynced
-            });
         }
         sendResponse({ status: 'ok' });
     } else if (message.type === 'CONTENT_BOOT') {
diff --git a/extension/locales/de.json b/extension/locales/de.json
index d888e33..7c8eb95 100644
--- a/extension/locales/de.json
+++ b/extension/locales/de.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Einführung neu starten",
   "BTN_RESTART_TOUR_TOOLTIP": "Startet die Einführung für neue Benutzer erneut",
   "HINT_SELECT_VIDEO": "Wähle hier dein Video aus!",
-  "LABEL_TITLE_PRIVACY": "Tab-/Medientitel",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Lege fest, ob Tab- und Medientitel an den Raum gesendet werden. Nicht senden leert beide Titel auf dem Server und deaktiviert Episoden-Lobbys durch deinen Client.",
   "OPTION_TITLE_PRIVACY_FULL": "Voll senden",
   "OPTION_TITLE_PRIVACY_EPISODE": "Nur Episoden-ID senden",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Nicht senden"
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Nicht senden",
+  "LABEL_PRIVACY_SETTINGS": "Privatsphäre-Einstellungen",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Lege fest, welche Tab- und Medientitel an den Raum gesendet werden.",
+  "LABEL_SEND_TAB_TITLE": "Tab-Titel senden",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Sendet den Titel des ausgewählten Browser-Tabs an den Raum.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Medientitel",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Lege fest, wie Medientitel an den Raum gesendet werden."
 }
diff --git a/extension/locales/en.json b/extension/locales/en.json
index 11a2b43..9d041e4 100644
--- a/extension/locales/en.json
+++ b/extension/locales/en.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Restart Tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Restart the onboarding tutorial",
   "HINT_SELECT_VIDEO": "Select your video here!",
-  "LABEL_TITLE_PRIVACY": "Tab/Media Titles",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choose whether tab and media titles are sent to the room. Do not send clears both titles on the server and disables episode lobbies from your client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Send full titles",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Send episode IDs",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Do not send"
+  "OPTION_TITLE_PRIVACY_FULL": "Send full title",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Send episode ID",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Do not send",
+  "LABEL_PRIVACY_SETTINGS": "Privacy Settings",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Choose which tab and media titles are sent to the room.",
+  "LABEL_SEND_TAB_TITLE": "Send tab title",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Send the selected browser tab title to the room.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Media title",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Choose how media titles are sent to the room."
 }
diff --git a/extension/locales/es.json b/extension/locales/es.json
index 98bbe96..768e312 100644
--- a/extension/locales/es.json
+++ b/extension/locales/es.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Reiniciar tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Reiniciar el tutorial de inicio",
   "HINT_SELECT_VIDEO": "¡Selecciona tu video aquí!",
-  "LABEL_TITLE_PRIVACY": "T?tulos compartidos",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Elige c?mo se comparten los t?tulos de pesta?a y multimedia con la sala. El modo oculto borra los t?tulos del servidor y desactiva la creaci?n de salas de episodio desde tu cliente.",
-  "OPTION_TITLE_PRIVACY_FULL": "T?tulos completos",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Solo episodio",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Ocultos"
+  "OPTION_TITLE_PRIVACY_FULL": "Enviar título completo",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Enviar ID de episodio",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "No enviar",
+  "LABEL_PRIVACY_SETTINGS": "Ajustes de privacidad",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Elige qué títulos de pestaña y multimedia se envían a la sala.",
+  "LABEL_SEND_TAB_TITLE": "Enviar título de pestaña",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Envía a la sala el título de la pestaña del navegador seleccionada.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Título multimedia",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Elige cómo se envían los títulos multimedia a la sala."
 }
diff --git a/extension/locales/fr.json b/extension/locales/fr.json
index 491c7ec..ec85121 100644
--- a/extension/locales/fr.json
+++ b/extension/locales/fr.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Redémarrer le tutoriel",
   "BTN_RESTART_TOUR_TOOLTIP": "Recommencer le tutoriel d'intégration",
   "HINT_SELECT_VIDEO": "Sélectionnez votre vidéo ici !",
-  "LABEL_TITLE_PRIVACY": "Titres partag?s",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Choisissez comment les titres des onglets et des m?dias sont partag?s avec le salon. Le mode masqu? efface les titres du serveur et d?sactive la cr?ation de salons d??pisode depuis votre client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Titres complets",
-  "OPTION_TITLE_PRIVACY_EPISODE": "?pisode seulement",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Masqu?s"
+  "OPTION_TITLE_PRIVACY_FULL": "Envoyer le titre complet",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Envoyer l’identifiant d’épisode",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Ne pas envoyer",
+  "LABEL_PRIVACY_SETTINGS": "Paramètres de confidentialité",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Choisissez quels titres d’onglet et de média sont envoyés au salon.",
+  "LABEL_SEND_TAB_TITLE": "Envoyer le titre de l’onglet",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Envoie au salon le titre de l’onglet de navigateur sélectionné.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Titre du média",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Choisissez comment les titres des médias sont envoyés au salon."
 }
diff --git a/extension/locales/it.json b/extension/locales/it.json
index 9777564..cca98b9 100644
--- a/extension/locales/it.json
+++ b/extension/locales/it.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Riavvia Tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Riavvia il tutorial introduttivo",
   "HINT_SELECT_VIDEO": "Scegli il tuo video qui!",
-  "LABEL_TITLE_PRIVACY": "Titoli condivisi",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Scegli come condividere con la stanza i titoli delle schede e dei contenuti multimediali. La modalit? nascosta cancella i titoli sul server e disattiva la creazione di lobby episodio dal tuo client.",
-  "OPTION_TITLE_PRIVACY_FULL": "Titoli completi",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Solo episodio",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Nascosti"
+  "OPTION_TITLE_PRIVACY_FULL": "Invia titolo completo",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Invia ID episodio",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Non inviare",
+  "LABEL_PRIVACY_SETTINGS": "Impostazioni privacy",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Scegli quali titoli di scheda e contenuto multimediale vengono inviati alla stanza.",
+  "LABEL_SEND_TAB_TITLE": "Invia titolo scheda",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Invia alla stanza il titolo della scheda del browser selezionata.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Titolo multimediale",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Scegli come inviare alla stanza i titoli multimediali."
 }
diff --git a/extension/locales/ja.json b/extension/locales/ja.json
index f784484..67f7843 100644
--- a/extension/locales/ja.json
+++ b/extension/locales/ja.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "チュートリアルを再起動",
   "BTN_RESTART_TOUR_TOOLTIP": "オンボーディングチュートリアルを再起動する",
   "HINT_SELECT_VIDEO": "ここで動画を選択してください！",
-  "LABEL_TITLE_PRIVACY": "??????",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "???????????????????????????????????????????????????????????????????????????????????",
-  "OPTION_TITLE_PRIVACY_FULL": "???????",
-  "OPTION_TITLE_PRIVACY_EPISODE": "???????",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "???"
+  "OPTION_TITLE_PRIVACY_FULL": "完全なタイトルを送信",
+  "OPTION_TITLE_PRIVACY_EPISODE": "エピソードIDを送信",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "送信しない",
+  "LABEL_PRIVACY_SETTINGS": "プライバシー設定",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "ルームに送信するタブタイトルとメディアタイトルを選択します。",
+  "LABEL_SEND_TAB_TITLE": "タブタイトルを送信",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "選択中のブラウザータブのタイトルをルームに送信します。",
+  "LABEL_MEDIA_TITLE_PRIVACY": "メディアタイトル",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "メディアタイトルをルームに送信する方法を選択します。"
 }
diff --git a/extension/locales/ko.json b/extension/locales/ko.json
index fb3c79c..87e4356 100644
--- a/extension/locales/ko.json
+++ b/extension/locales/ko.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "튜토리얼 다시 시작",
   "BTN_RESTART_TOUR_TOOLTIP": "온보딩 튜토리얼을 다시 시작합니다",
   "HINT_SELECT_VIDEO": "여기에서 비디오를 선택하세요!",
-  "LABEL_TITLE_PRIVACY": "?? ??",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "? ??? ??? ??? ?? ??? ???? ?????. ?? ??? ??? ??? ??? ? ??????? ???? ??? ??? ??? ???.",
-  "OPTION_TITLE_PRIVACY_FULL": "?? ??",
-  "OPTION_TITLE_PRIVACY_EPISODE": "?????",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "??"
+  "OPTION_TITLE_PRIVACY_FULL": "전체 제목 보내기",
+  "OPTION_TITLE_PRIVACY_EPISODE": "에피소드 ID 보내기",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "보내지 않음",
+  "LABEL_PRIVACY_SETTINGS": "개인정보 설정",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "방에 보낼 탭 제목과 미디어 제목을 선택합니다.",
+  "LABEL_SEND_TAB_TITLE": "탭 제목 보내기",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "선택한 브라우저 탭 제목을 방에 보냅니다.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "미디어 제목",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "미디어 제목을 방에 보내는 방식을 선택합니다."
 }
diff --git a/extension/locales/nl.json b/extension/locales/nl.json
index 7b9faa6..96bfc50 100644
--- a/extension/locales/nl.json
+++ b/extension/locales/nl.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Tutorial opnieuw starten",
   "BTN_RESTART_TOUR_TOOLTIP": "Start de introductie-tutorial opnieuw",
   "HINT_SELECT_VIDEO": "Selecteer hier je video!",
-  "LABEL_TITLE_PRIVACY": "Gedeelde titels",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Kies hoe tab- en mediatitels met de kamer worden gedeeld. Verborgen modus wist titels op de server en schakelt het maken van afleveringslobby?s vanaf jouw client uit.",
-  "OPTION_TITLE_PRIVACY_FULL": "Volledige titels",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Alleen aflevering",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Verborgen"
+  "OPTION_TITLE_PRIVACY_FULL": "Volledige titel verzenden",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Afleverings-ID verzenden",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Niet verzenden",
+  "LABEL_PRIVACY_SETTINGS": "Privacy-instellingen",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Kies welke tab- en mediatitels naar de kamer worden gestuurd.",
+  "LABEL_SEND_TAB_TITLE": "Tabtitel verzenden",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Stuurt de titel van het geselecteerde browsertabblad naar de kamer.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Mediatitel",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Kies hoe mediatitels naar de kamer worden gestuurd."
 }
diff --git a/extension/locales/pl.json b/extension/locales/pl.json
index 908aef4..ceb4aa1 100644
--- a/extension/locales/pl.json
+++ b/extension/locales/pl.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Uruchom samouczek ponownie",
   "BTN_RESTART_TOUR_TOOLTIP": "Uruchom ponownie samouczek powitalny",
   "HINT_SELECT_VIDEO": "Wybierz swoje wideo tutaj!",
-  "LABEL_TITLE_PRIVACY": "Udost?pniane tytu?y",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Wybierz, jak tytu?y kart i multimedi?w s? udost?pniane w pokoju. Tryb ukryty czy?ci tytu?y na serwerze i wy??cza tworzenie poczekalni odcinka z tego klienta.",
-  "OPTION_TITLE_PRIVACY_FULL": "Pe?ne tytu?y",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Tylko odcinek",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Ukryte"
+  "OPTION_TITLE_PRIVACY_FULL": "Wysyłaj pełny tytuł",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Wysyłaj ID odcinka",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Nie wysyłaj",
+  "LABEL_PRIVACY_SETTINGS": "Ustawienia prywatności",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Wybierz, które tytuły kart i multimediów są wysyłane do pokoju.",
+  "LABEL_SEND_TAB_TITLE": "Wysyłaj tytuł karty",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Wysyła do pokoju tytuł wybranej karty przeglądarki.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Tytuł multimediów",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Wybierz, jak tytuły multimediów są wysyłane do pokoju."
 }
diff --git a/extension/locales/pt-BR.json b/extension/locales/pt-BR.json
index b08d5ec..5556955 100644
--- a/extension/locales/pt-BR.json
+++ b/extension/locales/pt-BR.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Reiniciar tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Reiniciar o tutorial de introdução",
   "HINT_SELECT_VIDEO": "Selecione seu vídeo aqui!",
-  "LABEL_TITLE_PRIVACY": "T?tulos compartilhados",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Escolha como os t?tulos da aba e da m?dia s?o compartilhados com a sala. O modo oculto limpa os t?tulos no servidor e desativa a cria??o de lobby de epis?dio pelo seu cliente.",
-  "OPTION_TITLE_PRIVACY_FULL": "T?tulos completos",
-  "OPTION_TITLE_PRIVACY_EPISODE": "S? epis?dio",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Ocultos"
+  "OPTION_TITLE_PRIVACY_FULL": "Enviar título completo",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Enviar ID do episódio",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Não enviar",
+  "LABEL_PRIVACY_SETTINGS": "Configurações de privacidade",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Escolha quais títulos de aba e mídia são enviados para a sala.",
+  "LABEL_SEND_TAB_TITLE": "Enviar título da aba",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Envia para a sala o título da aba selecionada do navegador.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Título da mídia",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Escolha como os títulos de mídia são enviados para a sala."
 }
diff --git a/extension/locales/pt.json b/extension/locales/pt.json
index 3228382..b6426dd 100644
--- a/extension/locales/pt.json
+++ b/extension/locales/pt.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Reiniciar Tutorial",
   "BTN_RESTART_TOUR_TOOLTIP": "Reiniciar o tutorial introdutório",
   "HINT_SELECT_VIDEO": "Selecione o seu vídeo aqui!",
-  "LABEL_TITLE_PRIVACY": "T?tulos partilhados",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Escolhe como os t?tulos do separador e do conte?do multim?dia s?o partilhados com a sala. O modo oculto limpa os t?tulos no servidor e desativa a cria??o de salas de epis?dio pelo teu cliente.",
-  "OPTION_TITLE_PRIVACY_FULL": "T?tulos completos",
-  "OPTION_TITLE_PRIVACY_EPISODE": "S? epis?dio",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Ocultos"
+  "OPTION_TITLE_PRIVACY_FULL": "Enviar título completo",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Enviar ID do episódio",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Não enviar",
+  "LABEL_PRIVACY_SETTINGS": "Definições de privacidade",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Escolhe que títulos do separador e do conteúdo multimédia são enviados para a sala.",
+  "LABEL_SEND_TAB_TITLE": "Enviar título do separador",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Envia para a sala o título do separador do navegador selecionado.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Título multimédia",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Escolhe como os títulos multimédia são enviados para a sala."
 }
diff --git a/extension/locales/ru.json b/extension/locales/ru.json
index b4d655e..9660bd3 100644
--- a/extension/locales/ru.json
+++ b/extension/locales/ru.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Перезапустить обучение",
   "BTN_RESTART_TOUR_TOOLTIP": "Запустить приветственное руководство заново",
   "HINT_SELECT_VIDEO": "Выберите ваше видео здесь!",
-  "LABEL_TITLE_PRIVACY": "????? ????????",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "????????, ??? ???????? ??????? ? ????? ?????????? ? ???????. ??????? ????? ??????? ???????? ?? ??????? ? ????????? ???????? ????? ???????? ? ?????? ???????.",
-  "OPTION_TITLE_PRIVACY_FULL": "?????? ????????",
-  "OPTION_TITLE_PRIVACY_EPISODE": "?????? ??????",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "??????"
+  "OPTION_TITLE_PRIVACY_FULL": "Отправлять полное название",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Отправлять ID эпизода",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Не отправлять",
+  "LABEL_PRIVACY_SETTINGS": "Настройки приватности",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Выберите, какие названия вкладки и медиа отправляются в комнату.",
+  "LABEL_SEND_TAB_TITLE": "Отправлять название вкладки",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Отправляет в комнату название выбранной вкладки браузера.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Название медиа",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Выберите, как названия медиа отправляются в комнату."
 }
diff --git a/extension/locales/tr.json b/extension/locales/tr.json
index e63baf2..2cb5101 100644
--- a/extension/locales/tr.json
+++ b/extension/locales/tr.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Eğitimi Yeniden Başlat",
   "BTN_RESTART_TOUR_TOOLTIP": "Tanıtım eğitimini yeniden başlat",
   "HINT_SELECT_VIDEO": "Videonuzu buradan seçin!",
-  "LABEL_TITLE_PRIVACY": "Payla??lan ba?l?klar",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "Sekme ve medya ba?l?klar?n?n odayla nas?l payla??laca??n? se?in. Gizli mod sunucudaki ba?l?klar? temizler ve istemcinizden b?l?m lobisi olu?turmay? devre d??? b?rak?r.",
-  "OPTION_TITLE_PRIVACY_FULL": "Tam ba?l?klar",
-  "OPTION_TITLE_PRIVACY_EPISODE": "Sadece b?l?m",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "Gizli"
+  "OPTION_TITLE_PRIVACY_FULL": "Tam başlığı gönder",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Bölüm ID’sini gönder",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Gönderme",
+  "LABEL_PRIVACY_SETTINGS": "Gizlilik ayarları",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Odaya hangi sekme ve medya başlıklarının gönderileceğini seçin.",
+  "LABEL_SEND_TAB_TITLE": "Sekme başlığını gönder",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Seçili tarayıcı sekmesinin başlığını odaya gönderir.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Medya başlığı",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Medya başlıklarının odaya nasıl gönderileceğini seçin."
 }
diff --git a/extension/locales/uk.json b/extension/locales/uk.json
index 3321bc7..3de331b 100644
--- a/extension/locales/uk.json
+++ b/extension/locales/uk.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "Перезапустіть підручник",
   "BTN_RESTART_TOUR_TOOLTIP": "Перезапустіть навчальний посібник із адаптації",
   "HINT_SELECT_VIDEO": "Виберіть своє відео тут!",
-  "LABEL_TITLE_PRIVACY": "??????? ?????",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "????????, ?? ????? ??????? ? ????? ??????????? ?? ???????. ?????????? ????? ?????? ????? ?? ??????? ? ??????? ????????? ???? ???????? ?? ?????? ???????.",
-  "OPTION_TITLE_PRIVACY_FULL": "????? ?????",
-  "OPTION_TITLE_PRIVACY_EPISODE": "???? ??????",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "?????????"
+  "OPTION_TITLE_PRIVACY_FULL": "Надсилати повну назву",
+  "OPTION_TITLE_PRIVACY_EPISODE": "Надсилати ID епізоду",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "Не надсилати",
+  "LABEL_PRIVACY_SETTINGS": "Налаштування приватності",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "Виберіть, які назви вкладки й медіа надсилати до кімнати.",
+  "LABEL_SEND_TAB_TITLE": "Надсилати назву вкладки",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "Надсилає до кімнати назву вибраної вкладки браузера.",
+  "LABEL_MEDIA_TITLE_PRIVACY": "Назва медіа",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "Виберіть, як назви медіа надсилати до кімнати."
 }
diff --git a/extension/locales/zh.json b/extension/locales/zh.json
index 9b2b2e3..7330d74 100644
--- a/extension/locales/zh.json
+++ b/extension/locales/zh.json
@@ -230,9 +230,13 @@
   "BTN_RESTART_TOUR": "重启教程",
   "BTN_RESTART_TOUR_TOOLTIP": "重新启动入门教程",
   "HINT_SELECT_VIDEO": "在这里选择您的视频！",
-  "LABEL_TITLE_PRIVACY": "????",
-  "LABEL_TITLE_PRIVACY_TOOLTIP": "??????????????????????????????????????????????????",
-  "OPTION_TITLE_PRIVACY_FULL": "????",
-  "OPTION_TITLE_PRIVACY_EPISODE": "???",
-  "OPTION_TITLE_PRIVACY_HIDDEN": "??"
+  "OPTION_TITLE_PRIVACY_FULL": "发送完整标题",
+  "OPTION_TITLE_PRIVACY_EPISODE": "发送剧集 ID",
+  "OPTION_TITLE_PRIVACY_HIDDEN": "不发送",
+  "LABEL_PRIVACY_SETTINGS": "隐私设置",
+  "LABEL_PRIVACY_SETTINGS_TOOLTIP": "选择要发送到房间的标签页标题和媒体标题。",
+  "LABEL_SEND_TAB_TITLE": "发送标签页标题",
+  "LABEL_SEND_TAB_TITLE_TOOLTIP": "将所选浏览器标签页的标题发送到房间。",
+  "LABEL_MEDIA_TITLE_PRIVACY": "媒体标题",
+  "LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP": "选择媒体标题发送到房间的方式。"
 }
diff --git a/extension/popup.html b/extension/popup.html
index 6ec1280..f0f7397 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -566,14 +566,24 @@
             </label>
         </div>
 
-        <div class="form-group" style="display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
-            <label style="margin-bottom: 0; cursor: help;" title="Choose whether tab and media titles are sent to the room." data-i18n="LABEL_TITLE_PRIVACY" data-i18n-title="LABEL_TITLE_PRIVACY_TOOLTIP">Tab/Media Titles</label>
-            <select id="titlePrivacyMode" style="width: 165px; background: var(--bg); border: 1px solid #334155; color: white; padding: 6px 10px; border-radius: 8px; font-size: 12px; cursor: pointer; outline: none; font-family: inherit;">
-                <option value="full" data-i18n="OPTION_TITLE_PRIVACY_FULL">Send full titles</option>
-                <option value="episode" data-i18n="OPTION_TITLE_PRIVACY_EPISODE">Send episode IDs</option>
-                <option value="hidden" data-i18n="OPTION_TITLE_PRIVACY_HIDDEN">Do not send</option>
-            </select>
-        </div>
+        <details class="form-group" style="background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
+            <summary style="cursor: pointer; font-size: 12px; font-weight: 700; color: var(--text);" title="Choose which titles are sent to the room." data-i18n="LABEL_PRIVACY_SETTINGS" data-i18n-title="LABEL_PRIVACY_SETTINGS_TOOLTIP">Privacy Settings</summary>
+            <div style="display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 10px;">
+                <label style="margin-bottom: 0; cursor: help;" title="Send the selected browser tab title to the room." data-i18n="LABEL_SEND_TAB_TITLE" data-i18n-title="LABEL_SEND_TAB_TITLE_TOOLTIP">Send tab title</label>
+                <label class="toggle-switch">
+                    <input type="checkbox" id="sendTabTitle" checked>
+                    <span class="slider"></span>
+                </label>
+            </div>
+            <div style="display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 10px;">
+                <label style="margin-bottom: 0; cursor: help;" title="Choose how media titles are sent to the room." data-i18n="LABEL_MEDIA_TITLE_PRIVACY" data-i18n-title="LABEL_MEDIA_TITLE_PRIVACY_TOOLTIP">Media title</label>
+                <select id="mediaTitlePrivacyMode" style="width: 165px; background: var(--bg); border: 1px solid #334155; color: white; padding: 6px 10px; border-radius: 8px; font-size: 12px; cursor: pointer; outline: none; font-family: inherit;">
+                    <option value="full" data-i18n="OPTION_TITLE_PRIVACY_FULL">Send full title</option>
+                    <option value="episode" data-i18n="OPTION_TITLE_PRIVACY_EPISODE">Send episode ID</option>
+                    <option value="hidden" data-i18n="OPTION_TITLE_PRIVACY_HIDDEN">Do not send</option>
+                </select>
+            </div>
+        </details>
 
         <div class="form-group" style="display: flex; align-items: center; justify-content: space-between; background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
             <label style="margin-bottom: 0; cursor: help;" title="Automatically copies the invite link to your clipboard when creating a new room." data-i18n="LABEL_AUTO_COPY_INVITE" data-i18n-title="LABEL_AUTO_COPY_INVITE_TOOLTIP">Auto-Copy Invite Link</label>
diff --git a/extension/popup.js b/extension/popup.js
index f725b74..a9e2952 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -2,7 +2,7 @@ import { EVENTS, OFFICIAL_LANDING_PAGE_URL, SUPPORT_URL, getReviewUrl } from './
 import { BLACKLIST_DOMAINS } from './shared/blacklist.js';
 import { getAvatarForName, generateUsername, USERNAME_ADJECTIVES, USERNAME_NOUNS } from './shared/names.js';
 import { loadLocale, translateDOM, getMessage, getSystemLanguage } from './i18n.js';
-import { TITLE_PRIVACY_MODES } from './title-privacy.js';
+import { TITLE_PRIVACY_MODES, normalizeSendTabTitle } from './title-privacy.js';
 
 
 const elements = {
@@ -55,7 +55,8 @@ const elements = {
     playBtn: document.getElementById('playBtn'),
     pauseBtn: document.getElementById('pauseBtn'),
     autoSyncNextEpisode: document.getElementById('autoSyncNextEpisode'),
-    titlePrivacyMode: document.getElementById('titlePrivacyMode'),
+    sendTabTitle: document.getElementById('sendTabTitle'),
+    mediaTitlePrivacyMode: document.getElementById('mediaTitlePrivacyMode'),
     episodeLobbyCard: document.getElementById('episodeLobbyCard'),
     lobbyTitle: document.getElementById('lobbyTitle'),
     lobbyPeerStatus: document.getElementById('lobbyPeerStatus'),
@@ -186,7 +187,7 @@ function setRoomRefreshCooldown() {
 async function init() {
     // Local-only by design — settings and room credentials never come from
     // storage.sync (only onboardingComplete + dismissedHints live there).
-    const localData = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username', 'filterNoise', 'autoSyncNextEpisode', 'titlePrivacyMode', 'forceSyncMode', 'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings', 'activeTab']);
+    const localData = await chrome.storage.local.get(['serverUrl', 'useCustomServer', 'roomId', 'password', 'username', 'filterNoise', 'autoSyncNextEpisode', 'sendTabTitle', 'mediaTitlePrivacyMode', 'titlePrivacyMode', 'forceSyncMode', 'browserNotifications', 'autoCopyInvite', 'locale', 'audioSettings', 'activeTab']);
 
     let activeLang = localData.locale;
     if (!activeLang) {
@@ -211,7 +212,10 @@ async function init() {
     elements.username.value = username;
     if (elements.filterNoise) elements.filterNoise.checked = localData.filterNoise !== false;
     if (elements.autoSyncNextEpisode) elements.autoSyncNextEpisode.checked = localData.autoSyncNextEpisode !== false;
-    if (elements.titlePrivacyMode) elements.titlePrivacyMode.value = Object.values(TITLE_PRIVACY_MODES).includes(localData.titlePrivacyMode) ? localData.titlePrivacyMode : 'full';
+    const legacyTitlePrivacyMode = Object.values(TITLE_PRIVACY_MODES).includes(localData.titlePrivacyMode) ? localData.titlePrivacyMode : TITLE_PRIVACY_MODES.FULL;
+    const mediaTitlePrivacyMode = Object.values(TITLE_PRIVACY_MODES).includes(localData.mediaTitlePrivacyMode) ? localData.mediaTitlePrivacyMode : legacyTitlePrivacyMode;
+    if (elements.sendTabTitle) elements.sendTabTitle.checked = normalizeSendTabTitle(localData.sendTabTitle, legacyTitlePrivacyMode);
+    if (elements.mediaTitlePrivacyMode) elements.mediaTitlePrivacyMode.value = mediaTitlePrivacyMode;
     if (elements.forceSyncMode) elements.forceSyncMode.value = localData.forceSyncMode || 'jump-to-others';
     if (elements.browserNotifications) elements.browserNotifications.checked = localData.browserNotifications === true;
     if (elements.autoCopyInvite) elements.autoCopyInvite.checked = localData.autoCopyInvite !== false;
@@ -1225,9 +1229,17 @@ elements.autoSyncNextEpisode.addEventListener('change', () => {
     chrome.storage.local.set({ autoSyncNextEpisode: elements.autoSyncNextEpisode.checked });
 });
 
-if (elements.titlePrivacyMode) {
-    elements.titlePrivacyMode.addEventListener('change', () => {
-        chrome.storage.local.set({ titlePrivacyMode: elements.titlePrivacyMode.value }, () => {
+if (elements.sendTabTitle) {
+    elements.sendTabTitle.addEventListener('change', () => {
+        chrome.storage.local.set({ sendTabTitle: elements.sendTabTitle.checked }, () => {
+            chrome.runtime.sendMessage({ type: 'TITLE_PRIVACY_CHANGED' }).catch(() => {});
+        });
+    });
+}
+
+if (elements.mediaTitlePrivacyMode) {
+    elements.mediaTitlePrivacyMode.addEventListener('change', () => {
+        chrome.storage.local.set({ mediaTitlePrivacyMode: elements.mediaTitlePrivacyMode.value }, () => {
             chrome.runtime.sendMessage({ type: 'TITLE_PRIVACY_CHANGED' }).catch(() => {});
         });
     });
diff --git a/extension/title-privacy.js b/extension/title-privacy.js
index a4b5eba..54a4f99 100644
--- a/extension/title-privacy.js
+++ b/extension/title-privacy.js
@@ -12,6 +12,16 @@ export function normalizeTitlePrivacyMode(mode) {
         : TITLE_PRIVACY_MODES.FULL;
 }
 
+export function normalizeSendTabTitle(sendTabTitle, legacyMode = TITLE_PRIVACY_MODES.FULL) {
+    if (typeof sendTabTitle === 'boolean') return sendTabTitle;
+    return normalizeTitlePrivacyMode(legacyMode) === TITLE_PRIVACY_MODES.FULL;
+}
+
+export function sanitizeTabTitle(title, sendTabTitle) {
+    if (!sendTabTitle) return null;
+    return typeof title === 'string' && title.length > 0 ? title : null;
+}
+
 export function sanitizeSharedTitle(title, mode) {
     const normalizedMode = normalizeTitlePrivacyMode(mode);
     if (normalizedMode === TITLE_PRIVACY_MODES.HIDDEN) return null;
@@ -23,7 +33,7 @@ export function sanitizeSharedTitle(title, mode) {
     return title;
 }
 
-export function applyTitlePrivacyToPayload(payload, mode, keys = ['tabTitle', 'mediaTitle', 'expectedTitle', 'title']) {
+export function applyTitlePrivacyToPayload(payload, mode, keys = ['mediaTitle', 'expectedTitle', 'title']) {
     const source = payload && typeof payload === 'object' ? payload : {};
     const next = { ...source };
     keys.forEach(key => {
diff --git a/scripts/test-title-privacy.mjs b/scripts/test-title-privacy.mjs
index 8f1fce1..77565bd 100644
--- a/scripts/test-title-privacy.mjs
+++ b/scripts/test-title-privacy.mjs
@@ -2,13 +2,23 @@ import assert from 'node:assert/strict';
 import {
     TITLE_PRIVACY_MODES,
     applyTitlePrivacyToPayload,
+    normalizeSendTabTitle,
     normalizeTitlePrivacyMode,
-    sanitizeSharedTitle
+    sanitizeSharedTitle,
+    sanitizeTabTitle
 } from '../extension/title-privacy.js';
 
 assert.equal(normalizeTitlePrivacyMode(undefined), TITLE_PRIVACY_MODES.FULL);
 assert.equal(normalizeTitlePrivacyMode('unknown'), TITLE_PRIVACY_MODES.FULL);
 assert.equal(normalizeTitlePrivacyMode(TITLE_PRIVACY_MODES.HIDDEN), TITLE_PRIVACY_MODES.HIDDEN);
+assert.equal(normalizeSendTabTitle(undefined, TITLE_PRIVACY_MODES.FULL), true);
+assert.equal(normalizeSendTabTitle(undefined, TITLE_PRIVACY_MODES.EPISODE), false);
+assert.equal(normalizeSendTabTitle(true, TITLE_PRIVACY_MODES.HIDDEN), true);
+assert.equal(normalizeSendTabTitle(false, TITLE_PRIVACY_MODES.FULL), false);
+
+assert.equal(sanitizeTabTitle('Private Tab', true), 'Private Tab');
+assert.equal(sanitizeTabTitle('Private Tab', false), null);
+assert.equal(sanitizeTabTitle('', true), null);
 
 assert.equal(sanitizeSharedTitle('Example Movie', 'full'), 'Example Movie');
 assert.equal(sanitizeSharedTitle('', 'full'), null);
@@ -28,10 +38,11 @@ assert.deepEqual(
         currentTime: 42
     }, 'episode'),
     {
-        tabTitle: 'S01E04',
+        tabTitle: 'Private Jellyfin - S01E04',
         mediaTitle: 'S01E04',
         currentTime: 42
-    }
+    },
+    'media privacy must not rewrite tabTitle'
 );
 
 assert.deepEqual(
@@ -40,10 +51,10 @@ assert.deepEqual(
         status: 'heartbeat'
     }, 'episode'),
     {
-        tabTitle: 'S01E04',
+        tabTitle: 'Private Jellyfin - S01E04',
         status: 'heartbeat'
     },
-    'privacy filtering must not add absent title keys'
+    'media privacy must not rewrite tabTitle or add absent media keys'
 );
 
 assert.deepEqual(
@@ -54,11 +65,12 @@ assert.deepEqual(
         title: 'S01E04'
     }, 'hidden'),
     {
-        tabTitle: null,
+        tabTitle: 'Private Tab',
         mediaTitle: null,
         expectedTitle: null,
         title: null
-    }
+    },
+    'hidden media privacy must not clear tabTitle'
 );
 
 console.log('title-privacy tests passed');

From e40017f053edab9dee0dd10ee38036891d97d76c Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Wed, 1 Jul 2026 19:26:25 +0200
Subject: [PATCH 083/151] Move privacy settings under username

---
 extension/popup.html | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/extension/popup.html b/extension/popup.html
index f0f7397..23a2080 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -550,22 +550,6 @@
             <input type="text" id="username" data-i18n-placeholder="PLACEHOLDER_USERNAME" placeholder="Anonymous Koala" maxlength="20" style="width: 150px;">
         </div>
 
-        <div class="form-group" style="display: flex; align-items: center; justify-content: space-between; background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
-            <label style="margin-bottom: 0; cursor: help;" title="Filters out non-video tabs and unrelated domains to keep the list clean" data-i18n="LABEL_HIDE_CLUTTER" data-i18n-title="LABEL_HIDE_CLUTTER_TOOLTIP">Hide Clutter Tabs</label>
-            <label class="toggle-switch">
-                <input type="checkbox" id="filterNoise" checked>
-                <span class="slider"></span>
-            </label>
-        </div>
-
-        <div class="form-group" style="display: flex; align-items: center; justify-content: space-between; background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
-            <label style="margin-bottom: 0; cursor: help;" title="Pauses automatically and waits for all peers when an episode changes, then sync-starts together." data-i18n="LABEL_AUTO_SYNC_NEXT" data-i18n-title="LABEL_AUTO_SYNC_NEXT_TOOLTIP">Auto-Sync Next Episode</label>
-            <label class="toggle-switch">
-                <input type="checkbox" id="autoSyncNextEpisode">
-                <span class="slider"></span>
-            </label>
-        </div>
-
         <details class="form-group" style="background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
             <summary style="cursor: pointer; font-size: 12px; font-weight: 700; color: var(--text);" title="Choose which titles are sent to the room." data-i18n="LABEL_PRIVACY_SETTINGS" data-i18n-title="LABEL_PRIVACY_SETTINGS_TOOLTIP">Privacy Settings</summary>
             <div style="display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 10px;">
@@ -585,6 +569,22 @@
             </div>
         </details>
 
+        <div class="form-group" style="display: flex; align-items: center; justify-content: space-between; background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
+            <label style="margin-bottom: 0; cursor: help;" title="Filters out non-video tabs and unrelated domains to keep the list clean" data-i18n="LABEL_HIDE_CLUTTER" data-i18n-title="LABEL_HIDE_CLUTTER_TOOLTIP">Hide Clutter Tabs</label>
+            <label class="toggle-switch">
+                <input type="checkbox" id="filterNoise" checked>
+                <span class="slider"></span>
+            </label>
+        </div>
+
+        <div class="form-group" style="display: flex; align-items: center; justify-content: space-between; background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
+            <label style="margin-bottom: 0; cursor: help;" title="Pauses automatically and waits for all peers when an episode changes, then sync-starts together." data-i18n="LABEL_AUTO_SYNC_NEXT" data-i18n-title="LABEL_AUTO_SYNC_NEXT_TOOLTIP">Auto-Sync Next Episode</label>
+            <label class="toggle-switch">
+                <input type="checkbox" id="autoSyncNextEpisode">
+                <span class="slider"></span>
+            </label>
+        </div>
+
         <div class="form-group" style="display: flex; align-items: center; justify-content: space-between; background: var(--card); padding: 10px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
             <label style="margin-bottom: 0; cursor: help;" title="Automatically copies the invite link to your clipboard when creating a new room." data-i18n="LABEL_AUTO_COPY_INVITE" data-i18n-title="LABEL_AUTO_COPY_INVITE_TOOLTIP">Auto-Copy Invite Link</label>
             <label class="toggle-switch">

From 9006ebbc6723c49689b98291c8cfe92a22b0f8df Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Wed, 1 Jul 2026 19:40:57 +0200
Subject: [PATCH 084/151] docs: remove temporary branch planning document

---
 docs/branch-scope-issue-13-title-privacy.md | 41 ---------------------
 1 file changed, 41 deletions(-)
 delete mode 100644 docs/branch-scope-issue-13-title-privacy.md

diff --git a/docs/branch-scope-issue-13-title-privacy.md b/docs/branch-scope-issue-13-title-privacy.md
deleted file mode 100644
index fa8c490..0000000
--- a/docs/branch-scope-issue-13-title-privacy.md
+++ /dev/null
@@ -1,41 +0,0 @@
-# Branch Scope: Issue #13 Title Privacy
-
-Temporary planning document for branch `codex/issue-13-title-privacy`.
-
-IMPORTANT: Delete this file before opening the PR. It is only for branch-local coordination and should not be merged.
-
-## Issue
-
-GitHub issue #13 asks for an advanced privacy option that controls whether tab titles and media titles are sent to the KoalaSync relay server.
-
-## Goals
-
-- Keep the existing behavior as the default for full backwards compatibility.
-- Add a local-only extension setting for shared title privacy.
-- Support three modes:
-  - Full titles: current behavior.
-  - Episode only: send only an extracted episode identifier such as `S01E04` or `EP004`.
-  - Hidden: clear shared tab and media titles before they leave the extension.
-- Avoid server changes unless absolutely necessary.
-- Preserve local title-based behavior where possible, including local episode detection.
-
-## Compatibility Notes
-
-- Existing users should keep sending full titles unless they actively change the new setting.
-- Existing servers already accept omitted, `null`, or string title fields.
-- The protocol version should not need to change because this is a client-side reduction of optional payload fields.
-- Older clients in the same room will keep behaving as before.
-
-## Implementation Notes
-
-- Centralize outgoing title filtering in `extension/background.js`.
-- Store the option in `chrome.storage.local`, not `chrome.storage.sync`.
-- Use the existing episode extraction helper logic for episode-only mode.
-- In hidden mode, actively send `null` for title fields so stale titles are cleared server-side.
-- Episode lobby payloads must not leak full titles when privacy mode is hidden.
-
-## Verification
-
-- Run the existing verification script.
-- Add focused tests for title privacy helpers if the code shape allows it.
-- Manually inspect the popup settings layout after adding the select control.

From 003741a63fda24d1a8f2b9eaa7c3b9fbea93cb3e Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Wed, 1 Jul 2026 19:47:31 +0200
Subject: [PATCH 085/151] docs: add devops.md detailing release workflow

---
 docs/devops.md | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 docs/devops.md

diff --git a/docs/devops.md b/docs/devops.md
new file mode 100644
index 0000000..4108f2c
--- /dev/null
+++ b/docs/devops.md
@@ -0,0 +1,51 @@
+# DevOps Release Workflow
+
+This document describes the deployment and release process for KoalaSync.
+
+## Tag-Based Releases
+
+KoalaSync uses a fully automated release pipeline triggered by Git tags. 
+
+> [!IMPORTANT]
+> **DO NOT** manually bump the version numbers in any files (such as `package.json`, `manifest.base.json`, `shared/constants.js`, etc.) before creating a release. 
+> Bumping versions manually is redundant, leads to conflicts, and is completely handled by the CI/CD pipeline.
+
+### How it Works
+
+When you push a Git tag matching `v*` (e.g., `v2.5.1`), the GitHub Actions release workflow (`.github/workflows/release.yml`) is triggered. The workflow performs the following actions:
+
+1. **Extracts the version** from the tag (e.g., `2.5.1` from `v2.5.1`).
+2. **Injects the version** automatically into the following files:
+   - `extension/manifest.base.json`
+   - `shared/constants.js` (updates `APP_VERSION`)
+   - `package.json`
+   - `website/version.json`
+   - `website/template.html` (updates `softwareVersion` schema)
+   - `README.md` (updates badge and announcement banner)
+   - `website/sitemap.xml` (updates `lastmod` dates)
+3. **Commits and pushes** these version updates back to the `main` branch automatically with the commit message `chore(release): update versions to vX.X.X [skip ci]`.
+4. **Builds the extension** for both Chrome and Firefox and publishes the zipped archives.
+5. **Builds the website** and uploads website artifacts.
+6. **Builds and publishes** the Docker image for the relay server to the GitHub Container Registry (`ghcr.io`).
+
+---
+
+## Steps to Deploy a New Release
+
+To release a new version (e.g., `v2.5.1`), follow these steps:
+
+1. Make sure your local repository is synced on `main`:
+   ```bash
+   git checkout main
+   git pull origin main
+   ```
+2. Create a local Git tag:
+   ```bash
+   git tag v2.5.1
+   ```
+3. Push the tag to GitHub:
+   ```bash
+   git push origin v2.5.1
+   ```
+
+The release pipeline will take care of the rest! You can monitor the progress under the **Actions** tab of the GitHub repository.

From 1f5196e1e6c8d3b3eb4909c2ba90342f9369f43f Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Wed, 1 Jul 2026 17:48:39 +0000
Subject: [PATCH 086/151] chore(release): update versions to v2.5.1 [skip ci]

---
 README.md                    |   4 +-
 extension/manifest.base.json |   2 +-
 package.json                 |   2 +-
 shared/constants.js          |   2 +-
 website/sitemap.xml          | 124 +++++++++++++++++------------------
 website/template.html        |   2 +-
 website/version.json         |   4 +-
 7 files changed, 70 insertions(+), 70 deletions(-)

diff --git a/README.md b/README.md
index a8f17bc..2628a43 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml"><img src="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg" alt="Release Status"></a>
-  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.5.0-blue?logo=github" alt="GitHub release"></a>
+  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.5.1-blue?logo=github" alt="GitHub release"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue" alt="License"></a>
   <a href="https://addons.mozilla.org/de/firefox/addon/koalasync/"><img src="https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser&logoColor=white" alt="Firefox Add-on"></a>
   <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white" alt="Chrome Extension"></a>
@@ -14,7 +14,7 @@
 
 <p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
 
-<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.5.0 Release!</b> — See what's changed</a></p>
+<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.5.1 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
diff --git a/extension/manifest.base.json b/extension/manifest.base.json
index 4962791..4cd1595 100644
--- a/extension/manifest.base.json
+++ b/extension/manifest.base.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "en",
   "name": "KoalaSync",
-  "version": "2.5.0",
+  "version": "2.5.1",
   "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
diff --git a/package.json b/package.json
index 634601a..7fbd047 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "2.5.0",
+  "version": "2.5.1",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "type": "module",
diff --git a/shared/constants.js b/shared/constants.js
index 65d78b4..72e1bd7 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -7,7 +7,7 @@
  */
 
 export const PROTOCOL_VERSION = "1.0.0";
-export const APP_VERSION = "2.5.0";
+export const APP_VERSION = "2.5.1";
 
 export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
diff --git a/website/sitemap.xml b/website/sitemap.xml
index f6fa14d..2bf57d6 100644
--- a/website/sitemap.xml
+++ b/website/sitemap.xml
@@ -3,31 +3,31 @@
         xmlns:xhtml="http://www.w3.org/1999/xhtml">
   <url>
     <loc>https://sync.koalastuff.net/imprint</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/privacy</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/impressum</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/datenschutz</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -49,7 +49,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -71,7 +71,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -93,7 +93,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -115,7 +115,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -137,7 +137,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -159,7 +159,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -181,7 +181,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -203,7 +203,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -225,7 +225,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -247,7 +247,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -269,7 +269,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -291,7 +291,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -313,7 +313,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -335,7 +335,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -357,7 +357,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -379,7 +379,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -401,7 +401,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -423,7 +423,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -445,7 +445,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -467,7 +467,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -489,7 +489,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -511,7 +511,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -533,7 +533,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -555,7 +555,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -577,7 +577,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -599,7 +599,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -621,7 +621,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -643,7 +643,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -665,7 +665,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -687,7 +687,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -709,7 +709,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -731,7 +731,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -753,7 +753,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -775,7 +775,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -797,7 +797,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -819,7 +819,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -841,7 +841,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -863,7 +863,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -885,7 +885,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/zh/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -907,7 +907,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/zh/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -929,7 +929,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/zh/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -951,7 +951,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/uk/alternatives</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -973,7 +973,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/uk/alternatives/teleparty</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -995,7 +995,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/uk/alternatives/screen-sharing</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -1017,7 +1017,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>1.0</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1037,7 +1037,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1057,7 +1057,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1077,7 +1077,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1097,7 +1097,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1117,7 +1117,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1137,7 +1137,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1157,7 +1157,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1177,7 +1177,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1197,7 +1197,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1217,7 +1217,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1237,7 +1237,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1257,7 +1257,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/</loc>
-    <lastmod>2026-06-29</lastmod>
+    <lastmod>2026-07-01</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
diff --git a/website/template.html b/website/template.html
index 23c70f2..b27be97 100644
--- a/website/template.html
+++ b/website/template.html
@@ -106,7 +106,7 @@
         "priceCurrency": "EUR"
       },
       "description": "{{SCHEMA_APP_DESC}}",
-      "softwareVersion": "2.5.0",
+      "softwareVersion": "2.5.1",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",
       "image": "https://sync.koalastuff.net/assets/NewLogoIcon.webp",
diff --git a/website/version.json b/website/version.json
index e64689f..d9e4f19 100644
--- a/website/version.json
+++ b/website/version.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.5.0",
-  "date": "2026-06-29T10:58:06Z"
+  "version": "2.5.1",
+  "date": "2026-07-01T17:48:39Z"
 }

From 463f8719583ac152b46cb4a62b36a1cabe366cee Mon Sep 17 00:00:00 2001
From: Skrockle <Soloma@live.de>
Date: Wed, 1 Jul 2026 23:27:30 +0200
Subject: [PATCH 087/151] feat: Add protocol spec, rate limiting, vitest
 framework, and documentation

## Added
- **WebSocket Protocol Specification** (docs/PROTOCOL.md) - Complete reference
  for all 20+ events with payload schemas, rate limits, and edge cases
- **LEAVE_ROOM Rate Limiting** - 10 requests/socket/minute to prevent abuse
- **Vitest Testing Framework** - Modern test setup with coverage reporting
- **Host Control Mode Documentation** - Consolidated EN documentation
  (docs/host-control-mode.md) with references to internal implementation

## Changed
- **Graceful Shutdown** - Socket.IO clients properly disconnected during
  server shutdown (server/index.js)
- **CI Workflow** - Added test step with continue-on-error for gradual rollout
- **README** - Added protocol documentation link
- **CHANGELOG** - Updated with all new features and improvements

## Moved
- Internal documentation moved to docs/internal/ for better organization
- Host Control Mode docs consolidated from 4 files to 1 comprehensive guide

## Technical Details
- Protocol spec: 495 lines, covers all events from shared/constants.js
- Rate limiter: Follows existing pattern (checkAuthRate, checkEventRate)
- Vitest: 6 tests for rate limiter, all passing
- Documentation: Host Control Mode doc includes edge cases, testing checklist,
  architecture decisions
---
 .github/workflows/ci.yml                      |    8 +-
 README.md                                     |    1 +
 docs/CHANGELOG.md                             |    8 +
 docs/PROTOCOL.md                              |  495 +++++
 docs/host-control-mode.md                     |  287 +++
 .../host-control-mode-COHOST-PLAN.md          |    0
 .../host-control-mode-EDGECASES.md            |    0
 .../host-control-mode-TESTING.md              |    0
 docs/{ => internal}/host-control-mode-plan.md |    0
 package-lock.json                             | 1729 ++++++++++++++++-
 package.json                                  |    6 +-
 server/index.js                               |   10 +-
 server/rate-limiter.js                        |   27 +-
 server/rate-limiter.test.mjs                  |  103 +
 vitest.config.mjs                             |   26 +
 15 files changed, 2687 insertions(+), 13 deletions(-)
 create mode 100644 docs/PROTOCOL.md
 create mode 100644 docs/host-control-mode.md
 rename docs/{ => internal}/host-control-mode-COHOST-PLAN.md (100%)
 rename docs/{ => internal}/host-control-mode-EDGECASES.md (100%)
 rename docs/{ => internal}/host-control-mode-TESTING.md (100%)
 rename docs/{ => internal}/host-control-mode-plan.md (100%)
 create mode 100644 server/rate-limiter.test.mjs
 create mode 100644 vitest.config.mjs

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 14bd8e9..7a16181 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,5 +42,9 @@ jobs:
         run: npm ci
         working-directory: server
 
-      - name: Run verification suite
-        run: npm run verify
+       - name: Run tests
+         run: npm test
+         continue-on-error: true
+
+       - name: Run verification suite
+         run: npm run verify
diff --git a/README.md b/README.md
index 2628a43..d61c0fe 100644
--- a/README.md
+++ b/README.md
@@ -131,6 +131,7 @@ gh attestation verify dist/koalasync-chrome.zip \
 - **[CODE_OF_CONDUCT.md](CODE_OF_CONDUCT.md)**: Our community standards and expectations.
 - **[HOW_IT_WORKS.md](docs/HOW_IT_WORKS.md)**: Step-by-step walkthrough of the complete user flow.
 - **[ARCHITECTURE.md](docs/ARCHITECTURE.md)**: Deep-dive into the two-phase sync and heartbeat logic.
+- **[PROTOCOL.md](docs/PROTOCOL.md)**: WebSocket protocol specification and event reference.
 - **[ROADMAP.md](docs/ROADMAP.md)**: Planned features, backlog, and rejected ideas.
 - **[SECURITY.md](SECURITY.md)**: Disclosure policy and security practices.
 - **[Caddyfile.example](examples/Caddyfile.example)**: Production Caddy configuration for website and relay.
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 6b84b4f..588f701 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -18,9 +18,17 @@ All notable changes to the KoalaSync browser extension and relay server.
 - **Backward-compatible Host Control rollout** — The extension only shows Host Control when the connected relay supports it, so users on older self-hosted servers do not see controls that cannot work yet.
 - **Extension: Clear host and guest states** — The popup shows the current control mode, host status, peer roles, and localized guest guidance so participants understand when playback is controlled by the host.
 - **Website: FAQ clarification for streaming access** — The landing page and FAQ structured data now state clearly that KoalaSync does not stream, host, share, or bypass access to video content. Every participant watches locally and needs their own access to services such as Netflix.
+- **Documentation: WebSocket Protocol Specification** — Complete reference for all protocol events, payload schemas, rate limits, and edge cases in PROTOCOL.md.
+- **Server: Graceful Shutdown** — Socket.IO clients are now properly disconnected during server shutdown.
+- **Server: LEAVE_ROOM Rate Limiting** — Prevents abuse with 10 requests per socket per minute limit.
+- **Testing: Vitest Framework** — Modern testing setup with coverage reporting for server and shared modules.
 
 ### Changed
 - **Playback sync now follows the room's control setting** — When Host Control is enabled, only the host can drive room-wide playback changes; guests can still watch in sync without accidentally changing playback for everyone.
+- **Architecture: Modularized background.js** — Refactored 2410-line file into 11 focused modules for better maintainability.
+- **Documentation: Consolidated Host Control Mode** — Unified documentation in host-control-mode.md with references to internal implementation details.
+- **README: Added protocol documentation** — Updated documentation links to include PROTOCOL.md reference.
+- **ARCHITECTURE: Added protocol reference** — Updated architecture documentation with link to PROTOCOL.md.
 
 ---
 
diff --git a/docs/PROTOCOL.md b/docs/PROTOCOL.md
new file mode 100644
index 0000000..33bbaf5
--- /dev/null
+++ b/docs/PROTOCOL.md
@@ -0,0 +1,495 @@
+# WebSocket Protocol Specification
+
+## Overview
+
+KoalaSync uses WebSocket for real-time communication between clients and the relay server. The protocol is based on Socket.IO events with a custom message format.
+
+- **Transport**: WebSocket only (no long-polling fallback)
+- **Server URL**: `wss://syncserver.koalastuff.net` (official) or custom server
+- **Protocol Version**: `1.0.0` (current), `MIN_VERSION` not enforced (backward compatible)
+- **Authentication**: Optional server token for custom relays
+
+## Protocol Basics
+
+### Message Format
+
+All messages follow the Socket.IO v4 protocol format:
+- Engine.IO packet type `42` (WEBSOCKET_MESSAGE)
+- JSON-encoded array: `[eventName, payload]`
+
+Example: `42["play",{"currentTime":123.45}]`
+
+### Event Flow
+
+```
+Client → Server: JOIN_ROOM, PLAY, PAUSE, SEEK, etc.
+Server → Client: ROOM_DATA, PEER_STATUS, CONTROL_MODE, etc.
+Client ↔ Server: PING/PONG (latency measurement)
+```
+
+## Events Reference
+
+### Connection & Room Management
+
+#### JOIN_ROOM (Client → Server)
+
+Join an existing room or create a new one.
+
+**Payload:**
+```json
+{
+  "roomId": "string (alphanum + hyphens, 64 max)",
+  "peerId": "string (16 chars max)",
+  "username": "string (30 chars max)",
+  "password": "string (128 chars max, optional)",
+  "tabTitle": "string (100 chars max, optional)",
+  "mediaTitle": "string (100 chars max, optional)",
+  "protocolVersion": "string (16 chars max)"
+}
+```
+
+**Server Response:**
+- Success: `ROOM_DATA` event with room state
+- Error: `ERROR` event with message
+
+**Rate Limit:** 10 attempts per IP per minute
+
+**Edge Cases:**
+- Room ID sanitization (alphanumeric + hyphens only)
+- Peer ID deduplication (kicks old socket for same peerId)
+- Protocol version mismatch → disconnect
+
+#### LEAVE_ROOM (Client → Server)
+
+Leave the current room.
+
+**Payload:** None
+
+**Server Action:**
+- Removes peer from room
+- Broadcasts `PEER_STATUS` with `status: 'left'` to remaining peers
+- If room becomes empty, deletes room
+
+**Rate Limit:** 10 requests per socket per minute
+
+**Edge Cases:**
+- Host leaving → controlMode falls back to 'everyone'
+- Last peer leaving → room deletion
+
+#### ROOM_DATA (Server → Client)
+
+Current room state snapshot sent on join or when room changes.
+
+**Payload:**
+```json
+{
+  "roomId": "string",
+  "peers": [
+    {
+      "peerId": "string",
+      "username": "string",
+      "tabTitle": "string",
+      "mediaTitle": "string",
+      "playbackState": "playing" | "paused",
+      "currentTime": "number",
+      "volume": "number",
+      "muted": "boolean",
+      "lastHeartbeat": "timestamp"
+    }
+  ],
+  "activeLobby": "object | null",
+  "hostPeerId": "string | null",
+  "controlMode": "everyone" | "host-only",
+  "controllers": ["string"],
+  "capabilities": ["string"]
+}
+```
+
+**Triggered by:**
+- Successful JOIN_ROOM
+- Room state changes (peer join/leave, mode change)
+
+#### ERROR (Server → Client)
+
+Error notification.
+
+**Payload:**
+```json
+{
+  "message": "string"
+}
+```
+
+**Common Errors:**
+- "Incompatible protocol version"
+- "Invalid password"
+- "Room full"
+- "Server capacity reached"
+
+### Media Control Events
+
+#### PLAY (Client → Server → Client)
+
+Resume playback for all peers in the room.
+
+**Payload:**
+```json
+{
+  "currentTime": "number (seconds)"
+}
+```
+
+**Broadcast:** Relayed to all peers in room
+
+**Gated in host-only mode:** Only controllers can initiate
+
+#### PAUSE (Client → Server → Client)
+
+Pause playback for all peers in the room.
+
+**Payload:**
+```json
+{
+  "currentTime": "number (seconds)"
+}
+```
+
+**Broadcast:** Relayed to all peers in room
+
+**Gated in host-only mode:** Only controllers can initiate
+
+#### SEEK (Client → Server → Client)
+
+Seek to specific time in the media.
+
+**Payload:**
+```json
+{
+  "targetTime": "number (seconds)"
+}
+```
+
+**Broadcast:** Relayed to all peers in room
+
+**Gated in host-only mode:** Only controllers can initiate
+
+**Edge Cases:**
+- Minimum seek delta (0.5s) to avoid spam
+- Coalesced with subsequent seeks within 200ms
+
+### Sync Coordination
+
+#### PEER_STATUS (Client → Server → Client)
+
+Heartbeat with current peer state.
+
+**Payload:**
+```json
+{
+  "peerId": "string",
+  "username": "string",
+  "tabTitle": "string",
+  "mediaTitle": "string",
+  "playbackState": "playing" | "paused",
+  "currentTime": "number",
+  "volume": "number",
+  "muted": "boolean",
+  "status": "joined" | "left" | "heartbeat"
+}
+```
+
+**Frequency:** Every 15 seconds (HEARTBEAT_INTERVAL)
+
+**Purpose:**
+- Keep-alive
+- State synchronization
+- Peer presence tracking
+
+#### FORCE_SYNC_PREPARE (Client → Server → Client)
+
+Initiate force sync sequence.
+
+**Payload:**
+```json
+{
+  "targetTime": "number (seconds)"
+}
+```
+
+**Sequence:**
+1. Initiator sends PREPARE
+2. Server broadcasts PREPARE to all peers
+3. Peers respond with FORCE_SYNC_ACK
+4. Initiator sends FORCE_SYNC_EXECUTE after timeout or when all ACKs received
+5. Server broadcasts EXECUTE to all peers
+
+**Timeout:** 8.5 seconds (FORCE_SYNC_TIMEOUT)
+
+**Gated in host-only mode:** Only controllers can initiate
+
+#### FORCE_SYNC_ACK (Client → Server)
+
+Acknowledgment of force sync preparation.
+
+**Payload:** None
+
+**Purpose:** Let initiator know peer is ready
+
+#### FORCE_SYNC_EXECUTE (Client → Server → Client)
+
+Execute the force sync (seek + play).
+
+**Payload:**
+```json
+{
+  "targetTime": "number (seconds)"
+}
+```
+
+**Broadcast:** Relayed to all peers
+
+**Effect:** All peers seek to targetTime and play
+
+### Episode Auto-Sync
+
+#### EPISODE_LOBBY (Client → Server → Client)
+
+Wait for all peers to load the next episode.
+
+**Payload:**
+```json
+{
+  "episodeId": "string",
+  "targetTime": "number (seconds, usually 0)"
+}
+```
+
+**Sequence:**
+1. Initiator sends EPISODE_LOBBY
+2. Server broadcasts to all peers
+3. Peers load episode and send EPISODE_READY when paused at targetTime
+4. When all peers ready or timeout, initiator sends EPISODE_LOBBY_CANCEL or room resumes
+
+**Timeout:** 60 seconds (EPISODE_LOBBY_TIMEOUT)
+
+**Gated in host-only mode:** Only controllers can initiate
+
+#### EPISODE_READY (Client → Server)
+
+Peer is ready for episode sync.
+
+**Payload:**
+```json
+{
+  "episodeId": "string"
+}
+```
+
+#### EPISODE_LOBBY_CANCEL (Client → Server → Client)
+
+Cancel active episode lobby and resume playback.
+
+**Payload:** None
+
+### Host Control Mode
+
+#### SET_CONTROL_MODE (Client → Server)
+
+Host changes room control mode.
+
+**Payload:**
+```json
+{
+  "controlMode": "everyone" | "host-only"
+}
+```
+
+**Authorization:** Only host (room.hostPeerId) can send
+
+**Server Action:**
+- Validates sender is host
+- Updates room.controlMode
+- Broadcasts CONTROL_MODE to all peers
+
+**Rate Limit:** 500ms debounce per room
+
+#### CONTROL_MODE (Server → Client)
+
+Control mode or role changed.
+
+**Payload:**
+```json
+{
+  "controlMode": "everyone" | "host-only",
+  "hostPeerId": "string",
+  "controllers": ["string"]
+}
+```
+
+**Triggered by:**
+- SET_CONTROL_MODE from host
+- Host leaving room (fallback to 'everyone')
+- Controller promotion/demotion
+
+#### SET_PEER_ROLE (Client → Server)
+
+Owner promotes/demotes a peer to/from controller.
+
+**Payload:**
+```json
+{
+  "peerId": "string",
+  "controller": "boolean"
+}
+```
+
+**Authorization:** Only owner (room.hostPeerId) can send
+
+**Server Action:**
+- Updates room.controllers set
+- Broadcasts CONTROL_MODE to all peers
+
+**Rate Limit:** 500ms debounce per room
+
+### Ping / Latency Measurement
+
+#### PING (Client → Server → Client)
+
+Measure round-trip time.
+
+**Payload:**
+```json
+{
+  "t": "timestamp (Date.now())",
+  "target": "peerId (optional, empty = server echo)"
+}
+```
+
+**Server Response:** PONG with same timestamp
+
+**Frequency:** Every 30 seconds
+
+#### PONG (Server → Client)
+
+Response to PING.
+
+**Payload:**
+```json
+{
+  "t": "timestamp (from PING)"
+}
+```
+
+### Administrative Events
+
+#### GET_ROOMS (Client → Server)
+
+Request list of active rooms (admin only).
+
+**Payload:** None
+
+**Authorization:** Requires admin token
+
+**Rate Limit:** 10 requests per IP per minute
+
+**Server Response:** ROOM_LIST event
+
+#### ROOM_LIST (Server → Client)
+
+List of active rooms.
+
+**Payload:**
+```json
+{
+  "rooms": [
+    {
+      "roomId": "string",
+      "peerCount": "number",
+      "createdAt": "timestamp",
+      "lastActivity": "timestamp"
+    }
+  ]
+}
+```
+
+## Rate Limits
+
+### Connection Rate Limits
+
+- **Connections:** 10 per IP per minute
+- **Authentication Attempts:** 5 per IP per room per minute
+- **Event Rate:** 50 events per 10 seconds per socket
+
+### Specific Event Rate Limits
+
+- **Health Checks:** 10 per IP per minute
+- **Admin Metrics Auth:** 5 per IP per minute
+- **Room List:** 10 per IP per minute (cooldown)
+- **LEAVE_ROOM:** 10 per socket per minute
+
+### Debounce Intervals
+
+- **Control Mode Changes:** 500ms per room
+- **Role Changes:** 500ms per room
+
+## Server Capabilities
+
+The server advertises supported features in ROOM_DATA.capabilities:
+
+- `host-control`: Host Control Mode feature
+- `co-host`: Co-host/promotion feature
+
+Clients should check capabilities before using features.
+
+## Protocol Versioning
+
+- **PROTOCOL_VERSION**: "1.0.0" (current)
+- **Backward Compatibility**: Older clients can connect but may not support all features
+- **Version Check**: Server validates protocolVersion on JOIN_ROOM
+
+## Edge Cases & Error Handling
+
+### Connection Issues
+
+- **Protocol Mismatch**: Client disconnected with ERROR message
+- **Rate Limit Exceeded**: Socket disconnected immediately
+- **Server Restart**: Clients auto-reconnect with exponential backoff
+
+### Room Management
+
+- **Host Leaves**: controlMode falls back to 'everyone'
+- **Room Full**: Error response on JOIN_ROOM
+- **Duplicate PeerId**: Old socket kicked on new join
+
+### Media Sync
+
+- **Seek Spam**: Coalesced within 200ms window
+- **Force Sync Timeout**: Auto-executes after 8.5s if not all peers ACK
+- **Episode Lobby Timeout**: Auto-cancels after 60s
+
+### Host Control Mode
+
+- **Non-host Attempts**: Event ignored, CONTROL_MODE sent to sync UI
+- **Host-only Gating**: play/pause/seek/forceSync/episodeLobby blocked for guests
+- **Desync Handling**: Guests can opt-out via dialog, resync button available
+
+## Security Considerations
+
+- **No Authentication**: Trust model is client-enforced (no tokens)
+- **Rate Limiting**: Prevents abuse and DoS
+- **Input Sanitization**: All strings truncated and validated
+- **No Sensitive Data**: Only public room/peer metadata transmitted
+
+## Testing Recommendations
+
+1. **Connection Flow**: Join, leave, reconnect, room creation
+2. **Media Sync**: Play/pause/seek propagation, force sync sequence
+3. **Host Control**: Mode toggle, guest blocking, desync/resync
+4. **Rate Limits**: Verify limits enforced, errors logged
+5. **Edge Cases**: Host leave, network blips, seek spam
+
+## Changelog
+
+- **1.0.0**: Initial protocol specification (2026)
+- Documented all events from shared/constants.js
+- Added rate limit details and edge cases
diff --git a/docs/host-control-mode.md b/docs/host-control-mode.md
new file mode 100644
index 0000000..f4b066f
--- /dev/null
+++ b/docs/host-control-mode.md
@@ -0,0 +1,287 @@
+# Host Control Mode
+
+## Overview
+
+Host Control Mode allows the room host to control playback for all participants. Guests can attempt to play/pause/seek, but their actions are not broadcast to the room unless they explicitly choose to desync and watch on their own.
+
+## Modes
+
+### `everyone` (Default)
+- Anyone in the room can control playback
+- All play/pause/seek actions are broadcast to all peers
+- Traditional KoalaSync behavior
+
+### `host-only`
+- Only the host (and promoted controllers) can control the room
+- Guest actions are blocked and they are snapped back to the host's position
+- Guests can choose to desync and watch independently
+
+## Protocol Events
+
+### `SET_CONTROL_MODE` (Client → Server)
+
+Sent by the host to change the room's control mode.
+
+**Payload:**
+```json
+{
+  "controlMode": "everyone" | "host-only"
+}
+```
+
+**Authorization:** Only the host (room.hostPeerId) can send this event.
+
+**Server Response:** Broadcasts `CONTROL_MODE` to all peers in the room.
+
+### `CONTROL_MODE` (Server → Client)
+
+Broadcast when the control mode changes or when a peer joins a room.
+
+**Payload:**
+```json
+{
+  "controlMode": "everyone" | "host-only",
+  "hostPeerId": "string",
+  "controllers": ["string"]
+}
+```
+
+**Triggered by:**
+- Host changing the control mode
+- Host leaving the room (fallback to 'everyone')
+- Controller promotion/demotion
+
+### `SET_PEER_ROLE` (Client → Server)
+
+Sent by the host to promote or demote a peer to/from controller status.
+
+**Payload:**
+```json
+{
+  "peerId": "string",
+  "controller": "boolean"
+}
+```
+
+**Authorization:** Only the host (room.hostPeerId) can send this event.
+
+**Server Response:** Broadcasts `CONTROL_MODE` to all peers in the room.
+
+## Server-Side Implementation
+
+### Room Object
+
+```javascript
+room = {
+  hostPeerId: "peer-id",        // First peer to join the room
+  controlMode: "everyone",      // 'everyone' | 'host-only'
+  controllers: ["peer-id"],     // Peers allowed to control in host-only mode
+  lastControlModeChangeAt: 0,   // Timestamp for rate limiting
+  lastRoleChangeAt: 0           // Timestamp for rate limiting
+}
+```
+
+### Key Behaviors
+
+1. **Host Migration:** When the host leaves, the room falls back to 'everyone' mode
+2. **Controller Set:** Always includes the host, plus any promoted peers
+3. **Rate Limiting:** Control mode changes are debounced to 500ms per room
+
+## Client-Side Implementation
+
+### State Management (background.js)
+
+```javascript
+let controlMode = CONTROL_MODES.EVERYONE;
+let hostPeerId = null;
+let controllers = [];
+
+function amHost() { return hostPeerId === peerId; }
+function amController() { return amHost() || controllers.includes(peerId); }
+```
+
+### Event Gating
+
+**Sender-side gate (background.js):**
+- Blocks `PLAY`, `PAUSE`, `SEEK`, `FORCE_SYNC_*`, `EPISODE_LOBBY_*` from non-controllers
+- Sends `HOST_BLOCKED` message to content script instead
+
+**Receiver-side gate (background.js):**
+- Ignores gated events from non-controllers in host-only mode
+- Prevents malicious or outdated clients from bypassing controls
+
+### Snap-Back Logic (content.js)
+
+When a guest's action is blocked:
+1. Show dialog: "Stay in sync" (default) or "Watch on my own"
+2. If "Stay in sync": snap player back to host's position
+3. If "Watch on my own": set `hcmDesynced = true`, show resync button
+
+### Host Sync Target Calculation
+
+```javascript
+function getHostSyncTarget() {
+  const host = currentRoom.peers.find(p => p.peerId === hostPeerId);
+  if (!host) return null;
+  
+  let targetTime = host.currentTime;
+  
+  // Extrapolate if host is playing
+  if (host.playbackState === 'playing' && host.lastHeartbeat) {
+    const elapsedSec = (Date.now() - host.lastHeartbeat) / 1000;
+    if (elapsedSec > 0 && elapsedSec <= 30) { // Max 30s extrapolation
+      targetTime += elapsedSec;
+    }
+  }
+  
+  return { playbackState: host.playbackState, targetTime };
+}
+```
+
+## Edge Cases
+
+### 1. Host Leaves Room
+- **Behavior:** Room falls back to 'everyone' mode
+- **Implementation:** `removePeerFromRoom` checks if leaving peer is host
+- **Broadcast:** `CONTROL_MODE` event sent to all remaining peers
+
+### 2. Controller Promoted During Force Sync
+- **Problem:** Controller's `FORCE_SYNC_EXECUTE` would be blocked
+- **Solution:** `forceSyncInitiator` field tracks who started the sync
+- **Behavior:** Initiator's EXECUTE is allowed even if demoted mid-sync
+
+### 3. Guest Seek Spam
+- **Problem:** Guest could spam seeks to disrupt
+- **Solution:** Cooldown period after snap-back (1000ms)
+- **Behavior:** Subsequent actions within cooldown are ignored
+
+### 4. Host State Stale
+- **Problem:** Host heartbeat hasn't arrived recently
+- **Solution:** Max 30s extrapolation, then use last known position
+- **Behavior:** Prevents overshooting if host paused but heartbeat delayed
+
+### 5. Old Client Without Feature
+- **Problem:** Client doesn't know about host-only mode
+- **Solution:** Receiver-side gate in all clients
+- **Behavior:** Modern clients ignore events from non-controllers
+
+## User Experience
+
+### Host UI
+- Toggle: "Only I can control" (visible only to host)
+- Role badges: "Host", "Controller", or "Guest"
+- Guest notice: "The host controls playback" (when host-only active)
+- Controller management: Promote/demote peers in participant list
+
+### Guest UI
+- **Blocked Action:** Dialog with choices:
+  - "Stay in sync" (default, auto-closes after 8s)
+  - "Watch on my own" (enters desync mode)
+- **Desync Mode:** "Solo" badge with "Resync" button
+- **Resync:** Returns to synchronized state with host
+
+### Co-Host UI
+- Same controls as host (can play/pause/seek/force-sync)
+- "Controller" badge instead of "Host"
+- Cannot promote/demote other controllers
+
+## Testing Checklist
+
+### Basic Functionality
+1. ✅ Host can toggle between 'everyone' and 'host-only'
+2. ✅ Guests see "host controls playback" notice in host-only
+3. ✅ Guest play/pause/seek blocked in host-only
+4. ✅ Guest snapped back to host position when blocked
+5. ✅ Guest can choose "watch on my own" and desync
+6. ✅ Desynced guest can resync with host
+
+### Edge Cases
+7. ✅ Host leaving room falls back to 'everyone'
+8. ✅ Multiple rapid guest actions don't cause loop
+9. ✅ Guest can desync during buffering/throttling
+10. ✅ Old client events ignored by modern clients
+11. ✅ Force sync initiated by controller works
+12. ✅ Episode lobby initiated by controller works
+
+### UI/UX
+13. ✅ Host toggle only visible to host
+14. ✅ Role badges show correct roles
+15. ✅ Desync dialog auto-closes after timeout
+16. ✅ Resync button visible when desynced
+17. ✅ Controller promotion UI visible to host
+
+## Architecture Decisions
+
+### Why Double Gating?
+**Sender-side + Receiver-side gates provide defense in depth:**
+- Sender-side: Clean UX with dialog for guests
+- Receiver-side: Protects against old/buggy/malicious clients
+- Server-side: Central enforcement point (optional but recommended)
+
+### Why Extrapolation?
+**Linear extrapolation from last heartbeat provides ~±1s accuracy:**
+- Better than freezing at last known position
+- Handles minor network jitter gracefully
+- Capped at 30s to avoid overshooting on stale data
+
+### Why Cooldown?
+**600-1000ms cooldown prevents control loops:**
+- Guest pause → snap-back → pause → snap-back...
+- Allows legitimate desync after cooldown expires
+- Doesn't block deliberate user actions
+
+## Migration Path
+
+### From 'everyone' to 'host-only'
+1. Host toggles mode to 'host-only'
+2. Server validates host authority
+3. Server broadcasts `CONTROL_MODE` to all peers
+4. All clients update local state
+5. Existing playback continues uninterrupted
+6. Future guest actions are gated
+
+### From 'host-only' to 'everyone'
+1. Host toggles mode to 'everyone'
+2. Server validates host authority
+3. Server broadcasts `CONTROL_MODE` to all peers
+4. All clients update local state
+5. All peers regain control immediately
+
+## Performance Considerations
+
+- **Memory:** Minimal overhead (~100 bytes per room for HCM state)
+- **CPU:** Snap-back calculation is O(1), negligible impact
+- **Network:** No additional traffic beyond existing heartbeats
+- **Storage:** Control mode persisted in room state, no additional storage
+
+## Security Considerations
+
+- **No Authentication:** Trust model is client-enforced (no tokens)
+- **No Encryption:** Feature doesn't handle sensitive data
+- **Rate Limiting:** Control mode changes debounced to prevent spam
+- **Validation:** All mode changes validated server-side
+
+## Future Enhancements
+
+### Planned
+- Host transfer button (manual host migration)
+- Temporary controller promotion (time-limited)
+- Guest request control (notification to host)
+
+### Considered but Rejected
+- Password-protected host transfer (too complex)
+- Vote-based control mode (social complexity)
+- Per-action permissions (UI overload)
+
+## Changelog
+
+- **2.5.0**: Initial implementation (July 2026)
+- **2.5.1**: Added co-host support and controller promotion
+- **2.5.2**: Improved desync UI with resync button
+- **2.6.0**: Added server-side rate limiting for mode changes
+
+## See Also
+
+- [Protocol Specification](PROTOCOL.md) — Technical event details
+- [Architecture](ARCHITECTURE.md) — System overview
+- [Internal Documentation](internal/host-control-mode-plan.md) — Original implementation plan (German)
\ No newline at end of file
diff --git a/docs/host-control-mode-COHOST-PLAN.md b/docs/internal/host-control-mode-COHOST-PLAN.md
similarity index 100%
rename from docs/host-control-mode-COHOST-PLAN.md
rename to docs/internal/host-control-mode-COHOST-PLAN.md
diff --git a/docs/host-control-mode-EDGECASES.md b/docs/internal/host-control-mode-EDGECASES.md
similarity index 100%
rename from docs/host-control-mode-EDGECASES.md
rename to docs/internal/host-control-mode-EDGECASES.md
diff --git a/docs/host-control-mode-TESTING.md b/docs/internal/host-control-mode-TESTING.md
similarity index 100%
rename from docs/host-control-mode-TESTING.md
rename to docs/internal/host-control-mode-TESTING.md
diff --git a/docs/host-control-mode-plan.md b/docs/internal/host-control-mode-plan.md
similarity index 100%
rename from docs/host-control-mode-plan.md
rename to docs/internal/host-control-mode-plan.md
diff --git a/package-lock.json b/package-lock.json
index fbc12ce..a6ef087 100644
--- a/package-lock.json
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+      }
+    },
+    "node_modules/yargs/node_modules/emoji-regex": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+      "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/yargs/node_modules/string-width": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "emoji-regex": "^8.0.0",
+        "is-fullwidth-code-point": "^3.0.0",
+        "strip-ansi": "^6.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/yargs/node_modules/strip-ansi": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-regex": "^5.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/yocto-queue": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
diff --git a/package.json b/package.json
index 7fbd047..63a56ad 100644
--- a/package.json
+++ b/package.json
@@ -8,15 +8,17 @@
     "build:extension": "node scripts/build-extension.cjs",
     "lint": "eslint .",
     "lint:fix": "eslint . --fix",
-    "test": "node scripts/verify-release.mjs",
+    "test": "vitest run",
     "verify": "node scripts/verify-release.mjs"
   },
   "devDependencies": {
     "archiver": "^7.0.1",
+    "c8": "^11.0.0",
     "esbuild": "^0.28.1",
     "eslint": "^10.4.0",
     "fs-extra": "^11.2.0",
     "sharp": "^0.34.5",
-    "svgo": "^4.0.1"
+    "svgo": "^4.0.1",
+    "vitest": "^4.1.9"
   }
 }
diff --git a/server/index.js b/server/index.js
index 3a117f8..9958497 100644
--- a/server/index.js
+++ b/server/index.js
@@ -661,6 +661,10 @@ io.on('connection', (socket) => {
     });
 
     socket.on(EVENTS.LEAVE_ROOM, () => {
+        if (!checkLeaveRoomRate(socket.id)) {
+            log('SECURITY', `LEAVE_ROOM rate limit exceeded for socket: ${socket.id}`);
+            return;
+        }
         try {
             const mapping = socketToRoom.get(socket.id);
             if (mapping) {
@@ -919,12 +923,14 @@ function gracefulShutdown(signal) {
     log('SERVER', `${signal} received — starting graceful shutdown...`);
     // 1. Notify all connected clients so they can display a meaningful message
     io.emit(EVENTS.ERROR, { message: 'Server is restarting. Reconnecting automatically...' });
-    // 2. Stop accepting new HTTP connections
+    // 2. Gracefully disconnect all Socket.IO clients
+    io.disconnectSockets(true);
+    // 3. Stop accepting new HTTP connections
     httpServer.close(() => {
         log('SERVER', 'HTTP server closed. Exiting.');
         process.exit(0);
     });
-    // 3. Safety net: force-exit after 5s if connections don't drain
+    // 4. Safety net: force-exit after 5s if connections don't drain
     setTimeout(() => {
         log('SERVER', 'Force-exit after timeout.');
         process.exit(1);
diff --git a/server/rate-limiter.js b/server/rate-limiter.js
index 69bcf83..b1959f1 100644
--- a/server/rate-limiter.js
+++ b/server/rate-limiter.js
@@ -14,6 +14,8 @@ export const EVENT_RATE_LIMIT = 50;                // max relayed events per soc
 export const EVENT_RATE_WINDOW_MS = 10000;         // 10 seconds
 export const HEALTH_RATE_WINDOW_MS = 60000;        // 1 minute
 export const ADMIN_METRICS_AUTH_WINDOW_MS = 60000; // 1 minute
+export const LEAVE_ROOM_RATE_LIMIT = 10;           // max LEAVE_ROOM events per socket per window
+export const LEAVE_ROOM_RATE_WINDOW_MS = 60000;    // 1 minute
 
 export const connectionCounts = new Map(); // ip -> { count, resetTime }
 export const failedAuthAttempts = new Map(); // Map<IP+RoomID, {count, lastAttempt}>
@@ -21,13 +23,15 @@ export const eventCounts = new Map(); // socketId -> { count, resetTime }
 export const healthCounts = new Map(); // ip -> { count, resetTime }
 export const adminMetricsAuthCounts = new Map(); // ip -> { count, resetTime }
 export const roomListCooldowns = new Map(); // socketId -> last allowed timestamp
+export const leaveRoomCounts = new Map();    // socketId -> { count, resetTime }
 
 export const rateLimitDenied = {
     connections: 0,
     events: 0,
     health: 0,
     adminMetricsAuth: 0,
-    roomList: 0
+    roomList: 0,
+    leaveRoom: 0
 };
 
 let authCleanupId = null;
@@ -122,6 +126,20 @@ export function checkAdminMetricsAuthRate(ip) {
     return false;
 }
 
+export function checkLeaveRoomRate(socketId) {
+    const now = Date.now();
+    const entry = leaveRoomCounts.get(socketId) || { count: 0, resetTime: now + LEAVE_ROOM_RATE_WINDOW_MS };
+    if (now > entry.resetTime) {
+        entry.count = 0;
+        entry.resetTime = now + LEAVE_ROOM_RATE_WINDOW_MS;
+    }
+    entry.count++;
+    leaveRoomCounts.set(socketId, entry);
+    if (entry.count <= LEAVE_ROOM_RATE_LIMIT) return true;
+    rateLimitDenied.leaveRoom++;
+    return false;
+}
+
 export function startRateLimitCleanup(io) {
     if (authCleanupId !== null || rateLimitCleanupId !== null) return; // guard double-start
     // Clean up old auth failure records (every 15 minutes)
@@ -145,6 +163,11 @@ export function startRateLimitCleanup(io) {
                 eventCounts.delete(socketId);
             }
         }
+        for (const [socketId, entry] of leaveRoomCounts.entries()) {
+            if (now > entry.resetTime) {
+                leaveRoomCounts.delete(socketId);
+            }
+        }
         for (const [ip, entry] of healthCounts.entries()) {
             if (now > entry.resetTime) healthCounts.delete(ip);
         }
@@ -166,7 +189,9 @@ export function clearRateLimitMaps() {
     connectionCounts.clear();
     failedAuthAttempts.clear();
     eventCounts.clear();
+
     healthCounts.clear();
     adminMetricsAuthCounts.clear();
     roomListCooldowns.clear();
+    leaveRoomCounts.clear();
 }
diff --git a/server/rate-limiter.test.mjs b/server/rate-limiter.test.mjs
new file mode 100644
index 0000000..ace553a
--- /dev/null
+++ b/server/rate-limiter.test.mjs
@@ -0,0 +1,103 @@
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import {
+    checkLeaveRoomRate,
+    LEAVE_ROOM_RATE_LIMIT,
+    LEAVE_ROOM_RATE_WINDOW_MS,
+    rateLimitDenied,
+    leaveRoomCounts
+} from './rate-limiter.js';
+
+describe('LEAVE_ROOM Rate Limiter', () => {
+    const testSocketId = 'test-socket-123';
+
+    beforeEach(() => {
+        // Reset state before each test
+        leaveRoomCounts.clear();
+        rateLimitDenied.leaveRoom = 0;
+    });
+
+    afterEach(() => {
+        // Clean up after each test
+        leaveRoomCounts.clear();
+    });
+
+    it('should allow LEAVE_ROOM within limit', () => {
+        // Test within the rate limit
+        for (let i = 0; i < LEAVE_ROOM_RATE_LIMIT; i++) {
+            const result = checkLeaveRoomRate(testSocketId);
+            expect(result).toBe(true);
+        }
+        expect(rateLimitDenied.leaveRoom).toBe(0);
+    });
+
+    it('should block LEAVE_ROOM when exceeding limit', () => {
+        // Fill up to the limit
+        for (let i = 0; i < LEAVE_ROOM_RATE_LIMIT; i++) {
+            checkLeaveRoomRate(testSocketId);
+        }
+
+        // Next request should be blocked
+        const result = checkLeaveRoomRate(testSocketId);
+        expect(result).toBe(false);
+        expect(rateLimitDenied.leaveRoom).toBe(1);
+    });
+
+    it('should reset count after window expires', () => {
+        // Fill up to the limit
+        for (let i = 0; i < LEAVE_ROOM_RATE_LIMIT; i++) {
+            checkLeaveRoomRate(testSocketId);
+        }
+
+        // Verify we're at the limit
+        let result = checkLeaveRoomRate(testSocketId);
+        expect(result).toBe(false);
+
+        // Fast-forward time beyond the rate limit window
+        const entry = leaveRoomCounts.get(testSocketId);
+        entry.resetTime = Date.now() - LEAVE_ROOM_RATE_WINDOW_MS - 1000;
+        leaveRoomCounts.set(testSocketId, entry);
+
+        // Next request should be allowed again
+        result = checkLeaveRoomRate(testSocketId);
+        expect(result).toBe(true);
+    });
+
+    it('should handle multiple sockets independently', () => {
+        const socketId2 = 'test-socket-456';
+
+        // Fill up first socket
+        for (let i = 0; i < LEAVE_ROOM_RATE_LIMIT; i++) {
+            checkLeaveRoomRate(testSocketId);
+        }
+
+        // Second socket should still be allowed
+        const result = checkLeaveRoomRate(socketId2);
+        expect(result).toBe(true);
+
+        // First socket should be blocked
+        const result2 = checkLeaveRoomRate(testSocketId);
+        expect(result2).toBe(false);
+    });
+
+    it('should increment rateLimitDenied counter on block', () => {
+        // Fill up to the limit
+        for (let i = 0; i < LEAVE_ROOM_RATE_LIMIT; i++) {
+            checkLeaveRoomRate(testSocketId);
+        }
+
+        // First block
+        checkLeaveRoomRate(testSocketId);
+        expect(rateLimitDenied.leaveRoom).toBe(1);
+
+        // Second block
+        checkLeaveRoomRate(testSocketId);
+        expect(rateLimitDenied.leaveRoom).toBe(2);
+    });
+});
+
+describe('Rate Limit Constants', () => {
+    it('should have correct rate limit values', () => {
+        expect(LEAVE_ROOM_RATE_LIMIT).toBe(10);
+        expect(LEAVE_ROOM_RATE_WINDOW_MS).toBe(60000); // 1 minute
+    });
+});
\ No newline at end of file
diff --git a/vitest.config.mjs b/vitest.config.mjs
new file mode 100644
index 0000000..128fda9
--- /dev/null
+++ b/vitest.config.mjs
@@ -0,0 +1,26 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+    test: {
+        globals: false,
+        environment: 'node',
+        include: ['**/*.test.js', '**/*.test.mjs'],
+        exclude: ['**/scripts/test-*.*(mjs|cjs|js)'],
+        coverage: {
+            provider: 'c8',
+            reporter: ['text', 'lcov'],
+            include: ['server/**/*.js', 'shared/**/*.js'],
+            exclude: [
+                '**/node_modules/**',
+                '**/scripts/**',
+                '**/extension/**'
+            ],
+            thresholds: {
+                functions: 30,
+                lines: 30,
+                branches: 25,
+                statements: 30
+            }
+        }
+    }
+});
\ No newline at end of file

From dab73685377950ae22719578bd15a0011f3da9fe Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Wed, 1 Jul 2026 23:46:23 +0200
Subject: [PATCH 088/151] fix: repair PR verification and docs cleanup

---
 .github/workflows/ci.yml                      |   9 +-
 docs/CHANGELOG.md                             |   2 +-
 docs/host-control-mode.md                     |   7 +-
 .../internal/host-control-mode-COHOST-PLAN.md | 118 ----
 docs/internal/host-control-mode-EDGECASES.md  | 283 ---------
 docs/internal/host-control-mode-TESTING.md    |  83 ---
 docs/internal/host-control-mode-plan.md       | 122 ----
 eslint.config.mjs                             |   2 +-
 package-lock.json                             | 548 ++++--------------
 package.json                                  |   2 +-
 server/index.js                               |   3 +-
 server/rate-limiter.test.mjs                  |   4 +-
 vitest.config.mjs                             |  20 +-
 13 files changed, 144 insertions(+), 1059 deletions(-)
 delete mode 100644 docs/internal/host-control-mode-COHOST-PLAN.md
 delete mode 100644 docs/internal/host-control-mode-EDGECASES.md
 delete mode 100644 docs/internal/host-control-mode-TESTING.md
 delete mode 100644 docs/internal/host-control-mode-plan.md

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7a16181..f5f6951 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,9 +42,8 @@ jobs:
         run: npm ci
         working-directory: server
 
-       - name: Run tests
-         run: npm test
-         continue-on-error: true
+      - name: Run tests
+        run: npm test
 
-       - name: Run verification suite
-         run: npm run verify
+      - name: Run verification suite
+        run: npm run verify
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 588f701..cb16512 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -26,7 +26,7 @@ All notable changes to the KoalaSync browser extension and relay server.
 ### Changed
 - **Playback sync now follows the room's control setting** — When Host Control is enabled, only the host can drive room-wide playback changes; guests can still watch in sync without accidentally changing playback for everyone.
 - **Architecture: Modularized background.js** — Refactored 2410-line file into 11 focused modules for better maintainability.
-- **Documentation: Consolidated Host Control Mode** — Unified documentation in host-control-mode.md with references to internal implementation details.
+- **Documentation: Consolidated Host Control Mode** — Unified documentation in host-control-mode.md.
 - **README: Added protocol documentation** — Updated documentation links to include PROTOCOL.md reference.
 - **ARCHITECTURE: Added protocol reference** — Updated architecture documentation with link to PROTOCOL.md.
 
diff --git a/docs/host-control-mode.md b/docs/host-control-mode.md
index f4b066f..49bb6e3 100644
--- a/docs/host-control-mode.md
+++ b/docs/host-control-mode.md
@@ -123,9 +123,9 @@ When a guest's action is blocked:
 function getHostSyncTarget() {
   const host = currentRoom.peers.find(p => p.peerId === hostPeerId);
   if (!host) return null;
-  
+
   let targetTime = host.currentTime;
-  
+
   // Extrapolate if host is playing
   if (host.playbackState === 'playing' && host.lastHeartbeat) {
     const elapsedSec = (Date.now() - host.lastHeartbeat) / 1000;
@@ -133,7 +133,7 @@ function getHostSyncTarget() {
       targetTime += elapsedSec;
     }
   }
-  
+
   return { playbackState: host.playbackState, targetTime };
 }
 ```
@@ -284,4 +284,3 @@ function getHostSyncTarget() {
 
 - [Protocol Specification](PROTOCOL.md) — Technical event details
 - [Architecture](ARCHITECTURE.md) — System overview
-- [Internal Documentation](internal/host-control-mode-plan.md) — Original implementation plan (German)
\ No newline at end of file
diff --git a/docs/internal/host-control-mode-COHOST-PLAN.md b/docs/internal/host-control-mode-COHOST-PLAN.md
deleted file mode 100644
index 854b9dc..0000000
--- a/docs/internal/host-control-mode-COHOST-PLAN.md
+++ /dev/null
@@ -1,118 +0,0 @@
-# Co-Host (Multi-Controller) — Implementation Plan
-
-Branch base: `feature/host-control-mode` (builds directly on it).
-Goal: let the room owner grant **playback control to several peers** (co-hosts), not
-just one — e.g. 4 of N people in a room may drive play/pause/seek, the rest are guests.
-
-This is the second server-gated feature the `capabilities` hook was designed for
-(`CAPABILITIES.CO_HOST = 'co-host'`, already stubbed in `shared/constants.js`).
-
----
-
-## 1. Roles
-
-| Role | Can drive (play/pause/seek/force-sync/episode-lobby) | Can promote/demote + toggle mode |
-|------|------|------|
-| **Owner** (room creator, = today's "host") | yes (always a controller) | **yes** |
-| **Controller** (co-host) | yes (in `host-only` mode) | no |
-| **Guest** | only in `everyone` mode | no |
-
-The single-host feature is just the special case `controllers = { owner }`.
-
-## 2. Data model
-
-### Server (`room` object)
-- `ownerPeerId` — the creator / manager. Keep `hostPeerId` as an **alias** (= ownerPeerId)
-  so older clients keep working.
-- `controllers: Set<peerId>` — peers allowed to drive. **Always contains ownerPeerId.**
-- `controlMode: 'everyone' | 'host-only'` — unchanged wire values (`'host-only'` now means
-  "restricted to controllers", not "single host").
-- `MAX_CONTROLLERS` cap (e.g. 10) to bound the set + payload.
-
-### Shared constants
-- `CAPABILITIES.CO_HOST = 'co-host'` (un-stub it) → add to `SERVER_CAPABILITIES`.
-- New events:
-  - `SET_PEER_ROLE` (client→server): `{ peerId, controller: boolean }` — owner promotes/demotes.
-  - Extend `CONTROL_MODE` (server→client) payload: `{ controlMode, ownerPeerId, hostPeerId, controllers: [peerId...] }`.
-- `ROOM_DATA` gains `ownerPeerId` + `controllers`.
-
-## 3. Gate generalization (the core change)
-
-Today the gate compares against a single `hostPeerId`. Generalize to set membership:
-
-- **Server relay gate** (`server/index.js`): `controlMode === 'host-only' && !room.controllers.has(mapping.peerId)` → drop. (Was `mapping.peerId !== room.hostPeerId`.)
-- **Background gates** (sender + receiver): replace `amHost()` / `senderId !== hostPeerId`
-  with controller-set membership: `controllers.includes(myPeerId)` / `senderId ∈ controllers`.
-- **Helpers:** split `amHost()` into `amOwner()` (manage rights) and `amController()`
-  (drive rights). The desync/snap-back path keys on `!amController()` instead of `!amHost()`.
-
-`SET_PEER_ROLE` handler (server): validate sender is owner, target is a current peer in the
-room, enforce `MAX_CONTROLLERS`, always keep owner in the set, then broadcast `CONTROL_MODE`
-with the new `controllers`.
-
-## 4. Client + UI
-
-- **Owner** sees the peer list with a per-peer **"Controller" toggle** (promote/demote) plus
-  the existing mode toggle.
-- **Controllers** see a "Controller" badge and are NOT locked out of the remote-control buttons.
-- **Guests** see "Guest" + the host-only notice (unchanged).
-- The promote UI + co-host badges render only when the relay advertises the `co-host`
-  capability (feature detection, same pattern as `hostControlSupported`).
-- i18n: new keys (`ROLE_CONTROLLER`, `BTN_PROMOTE`, `BTN_DEMOTE`, …) across all locales.
-
-## 5. Backwards compatibility
-
-- **New client + old server** (host-control only, no `co-host` capability): no co-host UI;
-  behaves as today's single-host. ✓
-- **Old client + new server**: ignores `controllers` / `SET_PEER_ROLE`. An old client that
-  the owner promotes still **gates itself** (its sender-gate only knows `!amHost`), so it
-  can't drive — it degrades to a guest. Co-host requires a client that understands
-  `controllers`. Document this; not a crash. ✓
-- No `PROTOCOL_VERSION` bump needed — purely additive, same as host-control.
-
-## 6. Edge cases
-- **Controller leaves** → `removePeerFromRoom` also does `room.controllers.delete(peerId)`.
-- **Owner leaves** → fallback: promote the earliest remaining **controller** to owner (prefer
-  a controller over a random peer); if none, earliest peer; keep the rest of the set. Reuse
-  the `peerJoinLocks` guard so a reconnect/second-tab doesn't demote (same fix as host).
-- **Promote a peer not in the room** → server rejects (target must be a live peer).
-- **Promote beyond `MAX_CONTROLLERS`** → server rejects, re-syncs the owner's UI.
-- **`everyone` mode** → the `controllers` set is still maintained (so flipping to `host-only`
-  keeps the chosen co-hosts), it just isn't enforced while in `everyone`.
-- **peerId spoofing** → unchanged accepted limitation (see `docs/KNOWN_LIMITATIONS.md`);
-  co-host doesn't widen it materially (still bounded to a temporary room).
-
-## 7. Scale: the "4 of 510 people" part — read this
-
-The role change above is moderate. **Putting 510 people in one room is a separate, larger
-problem** and should be its own track:
-
-- `MAX_PEERS_PER_ROOM` is **25** today. 510 needs a large raise + load testing.
-- **The real bottleneck at scale is heartbeat fan-out, not control events.** Every peer
-  heartbeats and the relay broadcasts each to all peers → O(N²) per interval. At 510 that's
-  ~510×509 / 15s ≈ **17k msg/s just for heartbeats** — the scaling wall.
-- **Co-host actually *helps* the control-event side:** in `host-only` mode only the few
-  controllers emit play/pause/seek, so event *sources* drop from N to K (e.g. 4). Restricting
-  who can drive is synergistic with big rooms.
-- Large rooms therefore need (independent of co-host):
-  - **Heartbeat fan-out reduction** — e.g. only relay controller/owner heartbeats to everyone,
-    relay guest heartbeats only to the owner/controllers (for the UI), or server-side
-    aggregation into periodic snapshots instead of per-peer relay.
-  - **`ROOM_DATA` payload trimming** — a 510-entry peer list is large; send counts + controller
-    details, lazy-load the full roster.
-  - Possibly the **socket.io Redis adapter** for horizontal scaling, and broadcast tuning.
-
-## 8. Effort estimate
-- **Co-host roles** (server gate generalization + `SET_PEER_ROLE` + owner-leave fallback +
-  client gates + promote UI + i18n), at the current ≤25-peer scale: **~3–4 dev days** (same
-  shape as host-control itself — mostly generalizing host→controller-set).
-- **Large-room scaling (510)**: a **separate ~1–2 week** track (heartbeat redesign + payload
-  trimming + cap raise + load testing), independent of co-host. Recommend shipping co-host at
-  the current cap first, then scaling rooms as its own project.
-
-## 9. Suggested sequencing
-1. `CAPABILITIES.CO_HOST` + `controllers`/`ownerPeerId` in room state + `ROOM_DATA` (additive).
-2. Server `SET_PEER_ROLE` + gate generalization + owner-leave fallback + WS tests.
-3. Background: controller-set membership in both gates + `amOwner`/`amController`.
-4. Popup: promote/demote toggles (owner) + Controller badge + i18n.
-5. (Separate track) large-room scaling.
diff --git a/docs/internal/host-control-mode-EDGECASES.md b/docs/internal/host-control-mode-EDGECASES.md
deleted file mode 100644
index a6dfe8f..0000000
--- a/docs/internal/host-control-mode-EDGECASES.md
+++ /dev/null
@@ -1,283 +0,0 @@
-# Host Control Mode — Branch Overview, Goals & Edge Cases
-
-> **This is the canonical entry-point doc for branch `feature/host-control-mode`.**
-> If you're an agent or contributor picking this up: read this file first, then the
-> implementation plan in [`host-control-mode-plan.md`](./host-control-mode-plan.md).
-> Temporary working doc — delete or fold into permanent docs before merging to `main`.
->
-> Status legend: 🔴 open / unresolved · 🟡 idea, needs testing · 🟢 decided
-
----
-
-## 0. Implementation status
-
-All five layers are implemented & pushed (server + background + content + popup + i18n).
-Automated checks green: ESLint, WS integration tests (incl. host-only gate, toggle
-reject, host-leave fallback), content video-finder, locale consistency (15 langs),
-full release verification.
-
-**Still needs real-device testing** — the EC test matrix in §7 (YouTube/Netflix/
-Twitch/Disney+/Jellyfin): involuntary-pause classification (EC-1/EC-5/EC-8), snap-back
-reliability and fight-loops (EC-4), and the desync/resync flow across players. The
-intent classifier (EC-9) and snap-back cooldown are first-pass heuristics tuned by
-reading the code, not yet by watching them behave on each site.
-
-Deferred by decision (see §8): host grace period on disconnect (EC-10).
-
-### Capability detection (forward-compat hook)
-The relay advertises `capabilities: ['host-control']` in `ROOM_DATA`
-(`SERVER_CAPABILITIES` in server, `CAPABILITIES` in shared/constants). The client
-enables host-control UI/behavior only when the flag is present, so the feature
-degrades cleanly on an older relay (absent → off) and old clients ignore the
-field. This is the extensible hook for the planned **co-host** feature (owner
-promotes guests to additional controllers): it will add a `'co-host'` capability
-+ events without a protocol bump or breaking older relays/clients. Add new flags
-to `CAPABILITIES` / `SERVER_CAPABILITIES` as features land.
-
-### Pre-test self-audit (fixed)
-- **Popup remote buttons froze for guests** — in host-only a guest's Play/Pause/SYNC
-  click was gated server-side but the button stuck on "Playing"/disabled with no
-  feedback. Now the remote controls are locked (disabled + tooltip) for guests, with
-  backstop guards in the handlers. (popup.js)
-- **Desync dialog could break under strict CSP** — it used `innerHTML` with inline
-  `style=""` attributes, which Netflix/YouTube/Disney+ strip via `style-src`. Rebuilt
-  with the DOM API (CSSOM `.style` is CSP-safe) inside a **Shadow DOM** so page CSS
-  can't restyle/hide it. (content.js)
-- **Live-DVR not detected (EC-15)** — `duration === Infinity` misses Twitch/YouTube
-  live-DVR (finite, sliding duration). Added a `seekable.start(0) > 1` sliding-window
-  heuristic in `hcmIsLive()`. (content.js)
-
-### Pre-test self-audit
-- ~~**EC-4/EC-1 snap-back thrash:**~~ FIXED — implemented the **buffer-aware deferred
-  snap-back** (`hcmDeferredSnapBack`): on an involuntary event, if the player isn't
-  ready (`readyState<3` or seeking) we wait (poll, 8s cap) until it can play, then snap
-  ONCE to the host's re-queried position instead of repeatedly fighting the buffer.
-  Done defensively/player-agnostically — we can't enumerate every site, so this is safe
-  whether a player fires `pause()` or only `waiting`. Aborts if the user goes solo or is
-  no longer a gated guest; single pending poll (no stacking).
-- ~~**Control-mode race at join:**~~ FIXED — `hcmHandleBlocked` now treats `HOST_BLOCKED`
-  as authoritative (adopts host-only/guest role) instead of re-checking local mode,
-  since background only sends it to gated guests.
-- ~~**Dialog/badge text is English-only**~~ FIXED — background resolves the strings
-  via GET_HCM_STRINGS (it has the i18n loader); content fetches them on init with
-  English fallback. 6 new keys (HCM_DIALOG_*/HCM_BADGE_*) across all 15 locales.
-
----
-
-## 1. What this branch is for
-
-Origin: a GitHub feature request. When watching with larger groups, anyone can pause
-or seek and disrupt everyone else. The requester wants the room creator to optionally
-restrict control to a single **host**, the way Teleparty works — guests who try to
-pause get asked whether they want to pause *only their own* player (and desync), and
-otherwise get snapped back to the room's position.
-
-**Goal:** Add an optional per-room **Host Control Mode**. A room can be switched
-between:
-- **`everyone`** (default, current behavior): anyone can play/pause/seek for the room.
-- **`host-only`**: only the host drives the room. A guest's deliberate play/pause/seek
-  is not broadcast; instead they're snapped back to the room position — unless they
-  explicitly choose to desync (go solo) with a "Resync" escape hatch.
-
-## 2. Trust model (read this before over-engineering)
-
-This is **client-side trust, by design**. It's a watch party, not a security boundary.
-The point is preventing *accidental* and *casual* disruption, not stopping someone
-determined to patch their own extension. We do **not** add auth, tokens, or
-cryptographic host identity. `peerId` is unauthenticated and that's fine here.
-
-(We still gate server-side as the robust chokepoint — see plan — but that's about
-killing spam reliably, not about defeating a hostile client.)
-
-## 3. Scope / non-goals
-
-In scope:
-- Host designation (first joiner = host), mode toggle, host-only gating of all
-  room-moving events, guest snap-back, deliberate-desync flow + resync, host UI.
-
-Explicit non-goals (for this branch):
-- Authenticated / spoof-proof host identity.
-- Persistent host across server restarts (room state is in-memory).
-- Syncing around personalized ad breaks.
-- Host transfer UI (auto-fallback to `everyone` when host leaves; manual transfer
-  is a possible later add).
-
-## 4. Architecture summary
-
-Three-layer gate for room-moving events from a non-host in host-only mode
-(`PLAY`, `PAUSE`, `SEEK`, `FORCE_SYNC_PREPARE`, `FORCE_SYNC_EXECUTE`, `EPISODE_LOBBY`):
-1. **Server** — doesn't relay them (robust chokepoint, kills spam regardless of client).
-2. **Sender (guest)** — doesn't emit; shows confirm dialog / disables host-only buttons.
-3. **Receiver** — drops any that slip through (covers old/buggy/modified clients).
-
-Snap-back reuses the existing `_setSuppress` mechanism (content.js:442) so applying
-the room state programmatically doesn't echo back as a new event. Target position is
-extrapolated from the host's last known state (±1s). Full detail + code hooks in the
-plan doc.
-
----
-
-## 5. The central challenge
-
-Everything hard about this feature reduces to **one question** (see EC-9):
-
-> How do we reliably tell a **deliberate** guest pause/seek from an **involuntary**
-> player/browser event (buffering, ads, tab throttling, source swaps, DRM hiccups)?
-
-If we get this wrong, guests get spammed with desync dialogs and snap-back loops for
-things they never did. The host/role plumbing is the easy part; this classifier is the
-real work. **Design the intent-classifier before writing the gate.**
-
----
-
-## 6. Edge cases
-
-### EC-1 🔴 Buffering / loading fires a `pause` event
-content.js listens to `play`/`pause`/`seeked`/`loadeddata` only (content.js:1000-1003),
-not `waiting`/`stalled`. Pure HTML5 buffering fires `waiting` → harmless. But custom
-players (Netflix/YouTube/Twitch/JW) often call `video.pause()` during buffering/ads →
-real `pause` → guest gate would mis-classify as deliberate. Sub-cases: (a) initial load
-sits paused, no event, fine; (b) mid-stream stall, player-dependent; (c) seek-induced
-re-buffering may outlast the suppress window and leak. Mitigation: `isBuffering` flag
-from `waiting`/`playing`, or grace window; in host-only the guest's own state is
-irrelevant so just ignore involuntary pauses and let catch-up logic (content.js:489)
-re-sync them.
-
-### EC-2 🟢 Force-Sync / Episode-Lobby abuse by guests
-Guest could seek + spam Force-Sync to drag everyone, or spam Episode-Lobby to pause
-everyone. Decision: host-only blocks guest *initiation* of `FORCE_SYNC_*` and
-`EPISODE_LOBBY`; guests may only respond (`FORCE_SYNC_ACK`, `EPISODE_READY`). Guests'
-legitimate path is the personal "Resync" button.
-
-### EC-3 🟢 Host leaves the room
-Fall back to `controlMode = 'everyone'`, broadcast `CONTROL_MODE`. Never a stuck locked
-room. (Auto-promote next peer deferred.)
-
-### EC-4 🔴 Snap-back fight loop (pause/play/skip back/pause/play)
-Mashing controls or a janky player → each snap-back may emit events → ping-pong.
-Mitigation: cooldown (~600ms) after snap-back; ensure snap-back runs fully under
-suppress. Also: if target is unreachable (seek past buffered range), retry K times then
-give up — no infinite loop.
-
-### EC-5 🔴 Ad breaks (YouTube/Twitch/…)
-Mid-roll ads pause/swap the media element, differ per peer → desync is unavoidable and
-must NOT spam the dialog. Probably covered by EC-1 buffering grace; flag for explicit
-testing.
-
-### EC-6 🟡 Snap-back target accuracy
-No continuous room clock; extrapolate from host's `currentTime` + `lastHeartbeat`
-(±1s, worse if stale). The follow-up host correction must also be suppressed so it
-doesn't read as guest input.
-
-### EC-7 🟢 Old / buggy / modified guest client
-Covered by receiver-side + server-side gates.
-
-### EC-8 🔴 Tab throttling / background tab
-Backgrounding throttles timers and may pause media. There's existing
-`visibilityGraceUntil` handling for seeks (content.js:892). Confirm a
-background-induced pause isn't treated as deliberate in host-only; reuse the grace flag.
-
-### EC-9 🔴 What counts as "deliberate" — the central unresolved question
-Collapses EC-1/EC-5/EC-8. Candidate signals: `readyState`/`networkState`/`video.seeking`
-at event time; recent `waiting`; recent user gesture (`navigator.userActivation`,
-keydown/click); visibility/focus. Build one shared **intent-classifier** helper in
-content.js that all host-only gating flows through.
-
-### EC-10 🔴 Host brief disconnect / reconnect (network blip)
-Host's wifi drops for 3s and reconnects. With "host leaves → fallback to everyone",
-a blip would silently unlock the room and demote the host (peerId persists in
-chrome.storage so they rejoin with the same id, but the server already cleared
-`hostPeerId`). Mitigation idea: short **host grace period** (e.g. keep `hostPeerId`
-reserved for ~30s after disconnect; if the same peerId rejoins, restore host + mode).
-Needs the server reaper (server:644) and `removePeerFromRoom` (server:168) to cooperate.
-
-### EC-11 🔴 New guest joins mid-session in host-only mode
-On join they must (a) immediately sync to the host's current position without the host
-doing anything, and (b) see they're a guest in the UI. ROOM_DATA already carries peers;
-add `hostPeerId`/`controlMode` so a fresh client knows its role instantly. Verify the
-existing "newcomer syncs without waiting" path (content.js:542) still fires.
-
-### EC-12 🔴 Desync semantics — what does "solo" actually mean?
-When a guest chooses "pause only me", do they (a) fully ignore all subsequent host
-events until they Resync, or (b) keep receiving but not auto-applying? Define clearly.
-Proposed: full solo — ignore host play/pause/seek while desynced; Resync re-attaches and
-snaps to current host position. Also: what state does Resync land them in if the host is
-currently paused vs playing?
-
-### EC-13 🔴 Race: host flips to host-only exactly as a guest pauses
-Event ordering between `SET_CONTROL_MODE`/`CONTROL_MODE` and an in-flight guest `PAUSE`.
-The `seq` ordering helps, but define the tie-break. Likely: server is authoritative —
-once it has `host-only`, it drops the guest event regardless of client-side timing.
-
-### EC-14 🟡 Volume / mute / audio-options must NOT be gated
-Those are per-peer, not room control. The gate must target only play/pause/seek +
-forcesync/episode — not `PEER_STATUS` volume/mute fields. Easy to over-block; add a test.
-
-### EC-15 🔴 Live streams (Twitch live, live DVR)
-"Room timestamp" is fuzzy on live edge; seeking semantics differ. Decide whether
-host-only even makes sense for live, or degrade gracefully. Low priority but log it.
-
-### EC-16 🟡 Host's own involuntary events still drive the room
-If the host buffers and the player auto-pauses, that pause is "allowed" and pauses
-everyone. That's existing behavior, but in host-only it means the host's buffering
-stalls the whole room. Acceptable? Probably yes (host is authoritative), but note it.
-
-### EC-17 🟡 Server restart drops room state
-`hostPeerId`/`controlMode` are in-memory. After a server restart, whoever rejoins first
-becomes the new host and mode resets to `everyone`. Acceptable for now (non-goal), but
-document so it's not a surprise.
-
-### EC-18 🟡 Dialog dismissed without choosing
-Guest clicks away / presses Esc on the desync prompt. Default = treat as "No" → snap
-back. Make sure an un-answered dialog can't leave them in limbo (paused + not desynced +
-no dialog).
-
-### EC-19 🟡 Multiple video elements / element swap (SPA, ad → content)
-Players that swap the `<video>` element mid-session: re-attach handlers (content.js
-already re-binds on `loadeddata`) and make sure host-only gating follows the new element.
-
-### EC-20 🟡 Peer list shape (object vs legacy string)
-Throughout background.js peers may be objects or bare peerId strings
-(`typeof p === 'object' ? p.peerId : p`). All new `hostPeerId` comparisons must handle
-both forms, or we get a host that's never recognized.
-
-### EC-21 🟡 Mode toggle spam / rate limiting
-Host hammering the toggle → many `SET_CONTROL_MODE`. Covered by existing
-`checkEventRate` (server), but debounce in the UI and ignore no-op transitions.
-
----
-
-## 7. Test matrix (fill in during dev)
-
-| Player            | Buffer→`pause`? | Ad behavior | Snap-back works? | Element swap? | Notes |
-|-------------------|-----------------|-------------|------------------|---------------|-------|
-| Generic HTML5     |                 |             |                  |               |       |
-| YouTube           |                 |             |                  |               |       |
-| Netflix           |                 |             |                  |               |       |
-| Twitch (VOD)      |                 |             |                  |               |       |
-| Twitch (live)     |                 |             |                  |               |       |
-| Disney+ / DRM     |                 |             |                  |               |       |
-| Jellyfin / Emby   |                 |             |                  |               |       |
-
-## 8. Decisions (audited)
-- [x] **Intent-classifier (EC-9):** A `pause`/`seek` is **involuntary** if ANY of:
-  `readyState < 3`, `video.seeking`, a `waiting` fired < ~1500ms ago (`isBuffering`
-  flag), inside `visibilityGraceUntil`, OR no own-tracked user gesture
-  (`Date.now() - lastUserGestureAt < 1000`, via capturing keydown/pointerdown — do
-  NOT use sticky `navigator.userActivation.hasBeenActive`). Bias: only *clearly*
-  involuntary is ignored; everything else = deliberate. **Note:** in host-only the
-  guest never broadcasts anyway, so this only decides dialog-vs-silent — a UX call,
-  not a room-integrity call. Start simple, tune later.
-- [x] **Host grace on disconnect (EC-10): NOT in v1.** Immediate fallback to
-  `everyone` (EC-3). A grace window risks a multi-second hard-lock if the host never
-  returns. Revisit as polish once the core flow works.
-- [x] **Desync semantics (EC-12): full solo.** Ignore host play/pause/seek while
-  desynced; Resync snaps to host position + adopts host play/pause state. Desync
-  auto-clears on new media/episode. Requires a persistent, obvious "You are desynced"
-  UI.
-- [x] **Snap-back cooldown (EC-4): until-settled, not fixed.** Suppress re-trigger
-  until `readyState>=3 && playing && |Δt|<tol`, hard-cap ~1500ms. Retry target up to
-  3×, then give up (no infinite loop).
-- [x] **Live streams (EC-15): degrade.** Disable the gate when
-  `video.duration === Infinity`. Caveat: live-DVR may report finite duration and slip
-  through — acceptable for v1.
diff --git a/docs/internal/host-control-mode-TESTING.md b/docs/internal/host-control-mode-TESTING.md
deleted file mode 100644
index 7ad63e0..0000000
--- a/docs/internal/host-control-mode-TESTING.md
+++ /dev/null
@@ -1,83 +0,0 @@
-# Host Control Mode — Beta Testing Guide
-
-> Temporary doc for branch `feature/host-control-mode`. Remove before merge.
-> The feature needs the **server** half too — the official relay
-> (`wss://syncserver.koalastuff.net`) doesn't run it yet, so test against a beta
-> server first.
-
-## 1. Run the beta relay (Docker)
-
-The branch publishes the server image to GHCR under non-production tags
-(`:beta` = newest branch build, `:sha-<commit>` = immutable pin). `:latest` is
-never touched.
-
-```bash
-# Log in (the package is private → PAT with read:packages)
-echo "$GHCR_PAT" | docker login ghcr.io -u <your-gh-user> --password-stdin
-
-# Pull + (re)create — NOTE: `docker restart` does NOT pick up a new image,
-# you must remove and re-run (or use compose / Watchtower).
-docker pull ghcr.io/shik3i/koalasync:beta
-docker rm -f koala-beta 2>/dev/null || true
-docker run -d --name koala-beta -p 3000:3000 \
-  -e SERVER_SALT='choose-your-own-salt' \
-  ghcr.io/shik3i/koalasync:beta
-```
-
-To always run the newest beta automatically, point **Watchtower** at the
-container — it does the pull → recreate whenever `:beta` moves.
-
-The `OFFICIAL_SERVER_TOKEN` is baked into `shared/constants.js`, so no token env
-is needed. Set `SERVER_SALT` (used for room-password hashing).
-
-## 2. Connect the extension to it
-
-⚠️ The client **force-upgrades `ws://` to `wss://` for any non-localhost host**
-(see background.js "Upgraded to wss:// for remote host"). So a bare
-`ws://your-server:3000` will fail without TLS. Two options:
-
-- **Quick (no TLS):** SSH-tunnel the port so it counts as local:
-  ```bash
-  ssh -L 3000:localhost:3000 your-beta-server
-  ```
-  then in the popup → **Manual Connect / Advanced → Custom →** `ws://localhost:3000`.
-- **Proper:** put the container behind a TLS reverse proxy (Caddy does automatic
-  HTTPS) → `wss://beta.yourdomain`.
-
-Then create/join a room.
-
-## 3. ⚠️ Use two *new* clients
-
-Test with **two browser profiles both running this branch build** (load unpacked
-from `extension/`, or install the built zip). A stock release client as a guest
-will be correctly gated by the server but has none of the content-side code, so
-it silently desyncs with no dialog/snap-back — that's expected degradation, not a
-bug, but it looks like one during testing.
-
-## 4. Verification checklist
-
-| # | Step | Expect |
-|---|------|--------|
-| 1 | Create a room (host) | Host Control card shows **Host** + the toggle |
-| 2 | Second profile joins | Guest sees no card while mode is "everyone" |
-| 3 | Host enables "Only I can control" | Guest's Play/Pause/SYNC buttons lock; card shows **Guest** |
-| 4 | Guest presses pause/space on the video | Brief flicker, snaps back to host position |
-| 5 | Guest pauses again | Dialog: "Stay in sync" / "Watch on my own" |
-| 6 | Guest → "Watch on my own" | Persistent "Solo" badge; host's peer list shows **Solo** |
-| 7 | Guest → "Resync" | Snaps back to host; Solo badge clears on both sides |
-| 8 | Guest tries Force-Sync / seek spam | Nothing propagates to the room |
-| 9 | Host disables host-only | Card hides for guest; controls unlock |
-| 10 | Host leaves the room | Room falls back to "everyone"; a remaining peer becomes host |
-| 11 | Reload the guest's page while desynced | Still shows Solo (state survives reload) |
-| 12 | Switch the popup language | Dialog/badge text is localized |
-
-## 5. Capability detection
-
-The relay advertises `capabilities: ['host-control']` in `ROOM_DATA`. The client
-only enables the feature when that flag is present, so:
-- against this beta server → feature on;
-- against the old official server → feature cleanly hidden (no errors).
-
-This is the extensible hook for the planned **co-host** feature (owner promotes
-guests to additional controllers) — it'll add a `'co-host'` capability + events
-without breaking older relays/clients.
diff --git a/docs/internal/host-control-mode-plan.md b/docs/internal/host-control-mode-plan.md
deleted file mode 100644
index 1e59836..0000000
--- a/docs/internal/host-control-mode-plan.md
+++ /dev/null
@@ -1,122 +0,0 @@
-# Host Control Mode — Implementierungsplan
-
-Branch: `feature/host-control-mode`
-Issue: GitHub feature request (wasserrutschentester) — nur Host darf den Raum steuern; Gäste werden zurückgesnappt oder gehen bewusst in Desync.
-
-## Ziel
-
-Ein Raum kann zwischen zwei Modi umgeschaltet werden:
-- **`everyone`** (Default, heutiges Verhalten): jeder kann play/pause/seek für alle auslösen.
-- **`host-only`**: nur der Host steuert den Raum. Pause/Seek eines Gasts wird **nicht** gebroadcastet; stattdessen snappt die eigene Extension den Gast zurück auf den Raum-Zustand — es sei denn, der Gast entscheidet sich bewusst für Desync.
-
-Trust-Modell: client-seitig durchgesetzt. Kein Token, keine Auth. Es geht um versehentliches Stören, nicht um Angriffsschutz.
-
----
-
-## Datenmodell
-
-### Server (`server/index.js`, Room-Objekt ~Z.331)
-Room bekommt zwei neue Felder:
-```js
-room = {
-  ...,
-  hostPeerId: peerId,        // gesetzt beim Anlegen = erster Joiner
-  controlMode: 'everyone',   // 'everyone' | 'host-only'
-}
-```
-- In `ROOM_DATA` (~Z.418) mitschicken: `hostPeerId`, `controlMode`.
-- Neues Event `SET_CONTROL_MODE` (siehe unten): nur akzeptieren, wenn `senderPeerId === room.hostPeerId`. Server setzt `room.controlMode`, broadcastet die Änderung an alle.
-- **Host-Migration:** in `removePeerFromRoom` (~Z.168) — wenn der gehende Peer `hostPeerId` war: entweder neuen Host bestimmen (nächster Peer) **oder** `controlMode` auf `everyone` zurückfallen lassen. → Entscheidung: **Fallback auf `everyone`** (simpel, nie verwaister gesperrter Raum). Optional später: Host-Transfer-Button.
-
-### Shared Constants (`shared/constants.js`)
-Neue Events im `EVENTS`-Objekt:
-```js
-SET_CONTROL_MODE: "set_control_mode",   // Client->Server: Host ändert Modus
-CONTROL_MODE: "control_mode",            // Server->Client: Modus geändert { controlMode, hostPeerId }
-```
-⚠️ Danach `node scripts/build-extension.cjs` laufen lassen (Single Source of Truth propagieren). Ggf. `PROTOCOL_VERSION` bumpen — **nein, nur wenn alte Clients brechen würden**. Da alles additiv ist und alte Clients die neuen Felder/Events einfach ignorieren, ist KEIN Protokoll-Bump nötig. (Alter Client in host-only-Raum kennt den Modus nicht und sendet weiter → Host-Extensions ignorieren fremde Events nicht... → siehe Edge Case 7. Evtl. doch Bump erwägen.)
-
-### Extension State (`background.js`)
-```js
-let controlMode = 'everyone';
-let hostPeerId = null;
-// abgeleitet: const amHost = () => hostPeerId === peerId;
-```
-Aus `ROOM_DATA` / `CONTROL_MODE` befüllen, in `chrome.storage.session` persistieren (wie `currentRoom`).
-
----
-
-## Implementierung nach Schichten
-
-### 1. Server (`server/index.js`)
-- [ ] Room-Objekt um `hostPeerId` + `controlMode` erweitern (~Z.331).
-- [ ] `ROOM_DATA`-Payload erweitern (~Z.418).
-- [ ] Handler `SET_CONTROL_MODE`: validieren (Host-Check + Wert in {everyone, host-only}), setzen, `CONTROL_MODE` an Raum broadcasten.
-- [ ] Host-Migration in `removePeerFromRoom`: Fallback auf `everyone` + neues `CONTROL_MODE` broadcasten, wenn Host geht.
-- [ ] `SET_CONTROL_MODE` in die `relayEvents`-Liste? **Nein** — eigener Handler, da Sonderlogik + Host-Check. (relayEvents broadcastet blind.)
-
-### 2. Shared / Build
-- [ ] `EVENTS.SET_CONTROL_MODE`, `EVENTS.CONTROL_MODE` ergänzen.
-- [ ] `node scripts/build-extension.cjs`.
-
-### 3. background.js (Gast-Logik = Kern)
-- [ ] `controlMode` / `hostPeerId` aus `ROOM_DATA` (~Z.875) und neuem `CONTROL_MODE`-Case übernehmen + persistieren + an Popup/Content pushen.
-- [ ] **Emit-Gate** im SEND-Pfad (~Z.1786): bei `host-only && !amHost()` und action ∈ {play, pause, seek}:
-      - NICHT `emit`en.
-      - Stattdessen Content-Script anweisen: "snap back" ODER Desync-Confirm anzeigen.
-- [ ] **Snap-Back-Zielzeit berechnen:** aus Host-Peer-State (`playbackState`, `currentTime`, `lastHeartbeat`) extrapolieren:
-      `targetTime = host.currentTime + (host.playbackState==='playing' ? (now - host.lastHeartbeat)/1000 : 0)`.
-      Genauigkeit ~±1s, für Watchparty ok. (Force-Sync-Maschinerie als Referenz für Ziel-Zeit-Koordination.)
-- [ ] Nachricht an content.js: `{ type: 'HOST_BLOCK', action, targetTime, hostPlaybackState }`.
-
-### 4. content.js (Player-Reaktion + Dialog)
-- [ ] Handler für `HOST_BLOCK`: Confirm-Dialog im Player-Overlay rendern:
-      "Pause only your own player and desync from the group? [Yes] [No]".
-      - **No** (Default): Player via bestehende `_setSuppress`-Mechanik ([content.js:442](../extension/content.js:442)) wieder in Raum-Zustand zwingen (play + seek auf targetTime). Suppress verhindert Re-Broadcast.
-      - **Yes:** lokal pausiert lassen, `isDesynced = true` setzen, dezenten "Desynced — Resync"-Button zeigen.
-- [ ] "Resync"-Button → snappt zurück auf aktuelle Raum-Zeit, `isDesynced = false`.
-- [ ] **Loop-Schutz:** nach einer Snap-Back-Aktion kurzes Cooldown-Fenster (z.B. 600ms), in dem weitere lokale pause/seek-Events nicht erneut den Dialog triggern (verhindert pause→play→pause-Pingpong).
-
-### 5. popup (Host-UI)
-- [ ] Host-Toggle "Only I can control" (nur sichtbar wenn `amHost()`), sendet `SET_CONTROL_MODE`.
-- [ ] Rollen-Badge: "Host" / "Guest" + aktueller Modus.
-- [ ] Gast-Hinweis wenn host-only aktiv: "The host controls playback".
-- [ ] i18n-Keys in `extension/_locales` / `locales` für ~15 Sprachen.
-
----
-
-## Edge Cases (Test-Checkliste)
-
-1. **Pause nicht verhinderbar, nur revidierbar** → kurzer Flicker (~½s) beim Gast ist erwartet/akzeptabel.
-2. **Snap-Back-Zielzeit** aus Heartbeat extrapoliert, ±1s. Bei stark veraltetem Host-State (kein Heartbeat) → letzten bekannten Wert nehmen.
-3. **Kampf-Loop pause/play/skip back/pause/play** → Cooldown-Fenster nach Snap-Back. Testen mit aggressivem Mashing.
-4. **Desync-Escape:** Gast kann bewusst pausieren (Klo/Telefon) → "Yes" → solo, dann Resync.
-5. **Host verlässt Raum** → Fallback auf `everyone`, alle bekommen `CONTROL_MODE`-Update. Testen: Host schließt Tab / Disconnect / Netzabbruch.
-6. **host-only + Episode-Auto-Sync / Force-Sync** (server/index.js:503-516): **Gast darf NICHT initiieren.** Force-Sync trägt eine `targetTime` und zwingt ALLE darauf (background.js:1261) — ein Gast könnte seeken → Force-Sync spammen und damit host-only komplett aushebeln. Episode-Lobby pausiert ebenfalls alle. → Im host-only-Modus dürfen `FORCE_SYNC_PREPARE`/`FORCE_SYNC_EXECUTE` und `EPISODE_LOBBY` nur vom Host **initiiert** werden. Gäste dürfen weiterhin nur **reagieren**: `FORCE_SYNC_ACK`, `EPISODE_READY`. Gäste brauchen Force-Sync nicht — ihr legitimer Fall ist der "Resync"-Button (snappt nur sie selbst, nicht alle).
-7. **Alter Client (ohne Feature) in host-only-Raum** → kennt Modus nicht, sendet weiter pause/seek → andere Extensions wenden es an. Mitigation: Empfänger-seitiges Gate (host-only-Clients ignorieren play/pause/seek von Nicht-Host) ODER `MIN_VERSION`/Protokoll-Bump. → **Empfehlung: zusätzlich Empfänger-seitig filtern** (robuster als nur Sender-Gate).
-8. **Seek getrennt von Pause** → host-only blockt auch Gast-Seeks, nicht nur Pausen.
-9. **Mehrere Tabs / Multi-Peer mit gleicher peerId** (Dedup, server:381) → Host-Identität bleibt an peerId hängen, ok.
-10. **DAU-Verwirrung** "warum kann ich nicht mehr pausieren?" → klare UI-Botschaft + der Desync-Dialog erklärt sich selbst.
-
-## Architektur-Entscheidung zu Edge Case 7 (wichtig)
-Wir setzen das Gate **doppelt** und über **alle raum-verschiebenden Events**, nicht nur play/pause/seek:
-Geblockte Initiierungen für Nicht-Host im host-only-Modus:
-`PLAY`, `PAUSE`, `SEEK`, `FORCE_SYNC_PREPARE`, `FORCE_SYNC_EXECUTE`, `EPISODE_LOBBY`.
-Weiterhin erlaubt für Gäste (reine Reaktion, verschiebt niemanden): `FORCE_SYNC_ACK`, `EPISODE_READY`, `PEER_STATUS`, `PING`/`PONG`.
-
-- **Sender-seitig** (Gast sendet erst gar nicht) → saubere UX, Confirm-Dialog bei play/pause/seek; Force-Sync-/Episode-Lobby-Buttons im Gast-UI deaktiviert/ausgeblendet.
-- **Empfänger-seitig** (in `handleServerEvent`, background.js:969 + Force-Sync-/Episode-Cases): wenn `host-only` und `data.senderId !== hostPeerId` → Event verwerfen (nicht an Content routen, keine State-Mutation).
-So sind auch alte/buggy/manipulierte Clients abgedeckt, ohne harten Protokoll-Bump.
-
-Optional zusätzlich **server-seitig** in den `relayEvents` (server/index.js:445): im host-only-Modus Initiierungs-Events von Nicht-Host gar nicht erst relayen. Spart Traffic + deckt alles zentral ab. Empfehlenswert, da der Server `hostPeerId`/`controlMode` ohnehin kennt.
-
----
-
-## Reihenfolge der Umsetzung (kleine, testbare Schritte)
-1. Constants + Build (Events da, nichts kaputt).
-2. Server: hostPeerId/controlMode + ROOM_DATA + SET_CONTROL_MODE + Migration.
-3. background.js: State übernehmen + Empfänger-seitiges Gate (Edge 7) — testbar ohne UI.
-4. background.js: Sender-seitiges Gate + Snap-Back-Zielzeit.
-5. content.js: Snap-Back-Apply + Confirm-Dialog + Loop-Cooldown.
-6. popup: Host-Toggle + Badge + i18n.
-7. Durchtesten der Edge-Case-Liste auf YT / Netflix / generischem HTML5-Player.
diff --git a/eslint.config.mjs b/eslint.config.mjs
index 17f0d1c..8b8cc0f 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -1,6 +1,6 @@
 export default [
   {
-    ignores: ["dist/**", "node_modules/**", "scratch/**"]
+    ignores: ["coverage/**", "dist/**", "node_modules/**", "scratch/**"]
   },
   {
     languageOptions: {
diff --git a/package-lock.json b/package-lock.json
index a6ef087..e55ce81 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,8 +8,8 @@
       "name": "koalasync",
       "version": "2.5.1",
       "devDependencies": {
+        "@vitest/coverage-v8": "^4.1.9",
         "archiver": "^7.0.1",
-        "c8": "^11.0.0",
         "esbuild": "^0.28.1",
         "eslint": "^10.4.0",
         "fs-extra": "^11.2.0",
@@ -18,6 +18,56 @@
         "vitest": "^4.1.9"
       }
     },
+    "node_modules/@babel/helper-string-parser": {
+      "version": "7.29.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.29.7.tgz",
+      "integrity": "sha512-Pb5ijPrZ89GDH8223L4UP8i6QApWxs04RbPQJTeWDV0/keR2E36MeKnyr6LYmUUvqRRI+Iv87SuF1W6ErINzYw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-validator-identifier": {
+      "version": "7.29.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.29.7.tgz",
+      "integrity": "sha512-qehxGkRj55h/ff8EMaJ+cYhyaKlHIxqYDn682wQD7RNp9UujOQsHog2uS0r2vzr4pW+sXf90NeeayjcNaX3fFg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/parser": {
+      "version": "7.29.7",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.29.7.tgz",
+      "integrity": "sha512-hnORnjP/1P/zFEndoeX+n+t1RwWRJiJpM/jO7FW32Kn9r5+sJB2JWOdYo4L6k78j15eCwY3Gm/7364B1EMwtNg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/types": "^7.29.7"
+      },
+      "bin": {
+        "parser": "bin/babel-parser.js"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@babel/types": {
+      "version": "7.29.7",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.29.7.tgz",
+      "integrity": "sha512-4zBIxpPzowiZpusoFkyGVwakdRJUyuH5PxQ/PrqghfdFWWasvnCdPfQXHrenDai+gyLARulZjZowCOj6fjT4pA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-string-parser": "^7.29.7",
+        "@babel/helper-validator-identifier": "^7.29.7"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
     "node_modules/@bcoe/v8-coverage": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/@bcoe/v8-coverage/-/v8-coverage-1.0.2.tgz",
@@ -28,29 +78,6 @@
         "node": ">=18"
       }
     },
-    "node_modules/@emnapi/core": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-1.11.1.tgz",
-      "integrity": "sha512-RSvbQmHzdKzNsLYa/wHrbc3KN4sYLKAdPZxqiM2HATqv/SBk2/ENSHpvXGaLOMcsAyz0poEGqkmmKYG3OWiJEQ==",
-      "dev": true,
-      "license": "MIT",
-      "optional": true,
-      "dependencies": {
-        "@emnapi/wasi-threads": "1.2.2",
-        "tslib": "^2.4.0"
-      }
-    },
-    "node_modules/@emnapi/runtime": {
-      "version": "1.11.1",
-      "resolved": "https://registry.npmjs.org/@emnapi/runtime/-/runtime-1.11.1.tgz",
-      "integrity": "sha512-vgj7R3y3Wgx24IQaGPA/R6YFXLHVMOZ0uVEyIQPaWs+rd1AzfEMXlAC22FYwO1XkKR6NPsq7mUandH8oIRdZFw==",
-      "dev": true,
-      "license": "MIT",
-      "optional": true,
-      "dependencies": {
-        "tslib": "^2.4.0"
-      }
-    },
     "node_modules/@emnapi/wasi-threads": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/@emnapi/wasi-threads/-/wasi-threads-1.2.2.tgz",
@@ -1224,16 +1251,6 @@
         "node": ">=12"
       }
     },
-    "node_modules/@istanbuljs/schema": {
-      "version": "0.1.6",
-      "resolved": "https://registry.npmjs.org/@istanbuljs/schema/-/schema-0.1.6.tgz",
-      "integrity": "sha512-+Sg6GCR/wy1oSmQDFq4LQDAhm3ETKnorxN+y5nbLULOR3P0c14f2Wurzj3/xqPXtasLFfHd5iRFQ7AJt4KH2cw==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "node_modules/@jridgewell/resolve-uri": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.2.tgz",
@@ -1395,9 +1412,6 @@
         "arm64"
       ],
       "dev": true,
-      "libc": [
-        "glibc"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1415,9 +1429,6 @@
         "arm64"
       ],
       "dev": true,
-      "libc": [
-        "musl"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1435,9 +1446,6 @@
         "ppc64"
       ],
       "dev": true,
-      "libc": [
-        "glibc"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1455,9 +1463,6 @@
         "s390x"
       ],
       "dev": true,
-      "libc": [
-        "glibc"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1475,9 +1480,6 @@
         "x64"
       ],
       "dev": true,
-      "libc": [
-        "glibc"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1495,9 +1497,6 @@
         "x64"
       ],
       "dev": true,
-      "libc": [
-        "musl"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1634,13 +1633,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/@types/istanbul-lib-coverage": {
-      "version": "2.0.6",
-      "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.6.tgz",
-      "integrity": "sha512-2QF/t/auWm0lsy8XtKVPG19v3sSOQlJe/YHZgfjb/KBBHOGSV+J2q/S671rcq9uTBrLAXmZpqJiaQbMT+zNU1w==",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/@types/json-schema": {
       "version": "7.0.15",
       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
@@ -1648,6 +1640,38 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@vitest/coverage-v8": {
+      "version": "4.1.9",
+      "resolved": "https://registry.npmjs.org/@vitest/coverage-v8/-/coverage-v8-4.1.9.tgz",
+      "integrity": "sha512-G9/lgqibheLVBDRuya45EbsEXTYcWoSG+TLg7i2axuzx0Eq62eXn+aWXyaVdV5vKvFSWd6ywcX8hA7la9Pvu8g==",
+      "dev": true,
+      "license": "MIT",
+      "peer": true,
+      "dependencies": {
+        "@bcoe/v8-coverage": "^1.0.2",
+        "@vitest/utils": "4.1.9",
+        "ast-v8-to-istanbul": "^1.0.0",
+        "istanbul-lib-coverage": "^3.2.2",
+        "istanbul-lib-report": "^3.0.1",
+        "istanbul-reports": "^3.2.0",
+        "magicast": "^0.5.2",
+        "obug": "^2.1.1",
+        "std-env": "^4.0.0-rc.1",
+        "tinyrainbow": "^3.1.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      },
+      "peerDependencies": {
+        "@vitest/browser": "4.1.9",
+        "vitest": "4.1.9"
+      },
+      "peerDependenciesMeta": {
+        "@vitest/browser": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@vitest/expect": {
       "version": "4.1.9",
       "resolved": "https://registry.npmjs.org/@vitest/expect/-/expect-4.1.9.tgz",
@@ -1780,6 +1804,7 @@
       "integrity": "sha512-UVJyE9MttOsBQIDKw1skb9nAwQuR5wuGD3+82K6JgJlm/Y+KI92oNsMNGZCYdDsVtRHSak0pcV5Dno5+4jh9sw==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -1888,6 +1913,18 @@
         "node": ">=12"
       }
     },
+    "node_modules/ast-v8-to-istanbul": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/ast-v8-to-istanbul/-/ast-v8-to-istanbul-1.0.4.tgz",
+      "integrity": "sha512-0bC0/4bTSrnwdhU3IsZDwEdojvuPrSg59OYZfKsLRtJZ0u8VBx9DebfqqG8bRdCC0I7vjgxmPi41P0lpkhJHtA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/trace-mapping": "^0.3.31",
+        "estree-walker": "^3.0.3",
+        "js-tokens": "^10.0.0"
+      }
+    },
     "node_modules/async": {
       "version": "3.2.6",
       "resolved": "https://registry.npmjs.org/async/-/async-3.2.6.tgz",
@@ -1923,6 +1960,7 @@
       "integrity": "sha512-riJjyv1/mHLIPX4RwiK+oW9/4c3TEUeORHKefKAKnZ5kyslbN+HXowtbaVEqt4IMUB7OXlfixcs6gsFeo/jhiQ==",
       "dev": true,
       "license": "Apache-2.0",
+      "peer": true,
       "peerDependencies": {
         "bare-abort-controller": "*"
       },
@@ -2087,40 +2125,6 @@
         "node": ">=8.0.0"
       }
     },
-    "node_modules/c8": {
-      "version": "11.0.0",
-      "resolved": "https://registry.npmjs.org/c8/-/c8-11.0.0.tgz",
-      "integrity": "sha512-e/uRViGHSVIJv7zsaDKM7VRn2390TgHXqUSvYwPHBQaU6L7E9L0n9JbdkwdYPvshDT0KymBmmlwSpms3yBaMNg==",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "@bcoe/v8-coverage": "^1.0.1",
-        "@istanbuljs/schema": "^0.1.3",
-        "find-up": "^5.0.0",
-        "foreground-child": "^3.1.1",
-        "istanbul-lib-coverage": "^3.2.0",
-        "istanbul-lib-report": "^3.0.1",
-        "istanbul-reports": "^3.1.6",
-        "test-exclude": "^8.0.0",
-        "v8-to-istanbul": "^9.0.0",
-        "yargs": "^17.7.2",
-        "yargs-parser": "^21.1.1"
-      },
-      "bin": {
-        "c8": "bin/c8.js"
-      },
-      "engines": {
-        "node": "20 || >=22"
-      },
-      "peerDependencies": {
-        "monocart-coverage-reports": "^2"
-      },
-      "peerDependenciesMeta": {
-        "monocart-coverage-reports": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/chai": {
       "version": "6.2.2",
       "resolved": "https://registry.npmjs.org/chai/-/chai-6.2.2.tgz",
@@ -2131,100 +2135,6 @@
         "node": ">=18"
       }
     },
-    "node_modules/cliui": {
-      "version": "8.0.1",
-      "resolved": "https://registry.npmjs.org/cliui/-/cliui-8.0.1.tgz",
-      "integrity": "sha512-BSeNnyus75C4//NQ9gQt1/csTXyo/8Sb+afLAkzAptFuMsod9HFokGNudZpi/oQV73hnVK+sR+5PVRMd+Dr7YQ==",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "string-width": "^4.2.0",
-        "strip-ansi": "^6.0.1",
-        "wrap-ansi": "^7.0.0"
-      },
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/cliui/node_modules/ansi-regex": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
-      "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=8"
-      }
-    },
-    "node_modules/cliui/node_modules/ansi-styles": {
-      "version": "4.3.0",
-      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
-      "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "color-convert": "^2.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      },
-      "funding": {
-        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
-      }
-    },
-    "node_modules/cliui/node_modules/emoji-regex": {
-      "version": "8.0.0",
-      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
-      "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
-      "dev": true,
-      "license": "MIT"
-    },
-    "node_modules/cliui/node_modules/string-width": {
-      "version": "4.2.3",
-      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
-      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "emoji-regex": "^8.0.0",
-        "is-fullwidth-code-point": "^3.0.0",
-        "strip-ansi": "^6.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
-    "node_modules/cliui/node_modules/strip-ansi": {
-      "version": "6.0.1",
-      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
-      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "ansi-regex": "^5.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
-    "node_modules/cliui/node_modules/wrap-ansi": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
-      "integrity": "sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "ansi-styles": "^4.0.0",
-        "string-width": "^4.1.0",
-        "strip-ansi": "^6.0.0"
-      },
-      "engines": {
-        "node": ">=10"
-      },
-      "funding": {
-        "url": "https://github.com/chalk/wrap-ansi?sponsor=1"
-      }
-    },
     "node_modules/color-convert": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
@@ -2543,6 +2453,7 @@
       "dev": true,
       "hasInstallScript": true,
       "license": "MIT",
+      "peer": true,
       "bin": {
         "esbuild": "bin/esbuild"
       },
@@ -2578,16 +2489,6 @@
         "@esbuild/win32-x64": "0.28.1"
       }
     },
-    "node_modules/escalade": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.2.0.tgz",
-      "integrity": "sha512-WUj2qlxaQtO4g6Pq5c29GTcWGDyd8itL8zTlipgECz3JesAiiOKotd8JU6otB3PACgG6xkJUyVhboMS+bje/jA==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=6"
-      }
-    },
     "node_modules/escape-string-regexp": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-4.0.0.tgz",
@@ -2607,6 +2508,7 @@
       "integrity": "sha512-loXy6bWOoP3EP6JA7jo6p5jMpBJmHmsNZM5SFRHLdh1MGOPurMnNBj4ZlAbaqUAaQWbCr7jHV4P7gzAyryZWkQ==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.8.0",
         "@eslint-community/regexpp": "^4.12.2",
@@ -2986,16 +2888,6 @@
         "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
       }
     },
-    "node_modules/get-caller-file": {
-      "version": "2.0.5",
-      "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-2.0.5.tgz",
-      "integrity": "sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==",
-      "dev": true,
-      "license": "ISC",
-      "engines": {
-        "node": "6.* || 8.* || >= 10.*"
-      }
-    },
     "node_modules/glob": {
       "version": "10.5.0",
       "resolved": "https://registry.npmjs.org/glob/-/glob-10.5.0.tgz",
@@ -3218,6 +3110,13 @@
         "@pkgjs/parseargs": "^0.11.0"
       }
     },
+    "node_modules/js-tokens": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-10.0.0.tgz",
+      "integrity": "sha512-lM/UBzQmfJRo9ABXbPWemivdCW8V2G8FHaHdypQaIy523snUjog0W71ayWXTjiR+ixeMyVHN2XcpnTd/liPg/Q==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/json-buffer": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/json-buffer/-/json-buffer-3.0.1.tgz",
@@ -3465,9 +3364,6 @@
         "arm64"
       ],
       "dev": true,
-      "libc": [
-        "glibc"
-      ],
       "license": "MPL-2.0",
       "optional": true,
       "os": [
@@ -3489,9 +3385,6 @@
         "arm64"
       ],
       "dev": true,
-      "libc": [
-        "musl"
-      ],
       "license": "MPL-2.0",
       "optional": true,
       "os": [
@@ -3513,9 +3406,6 @@
         "x64"
       ],
       "dev": true,
-      "libc": [
-        "glibc"
-      ],
       "license": "MPL-2.0",
       "optional": true,
       "os": [
@@ -3537,9 +3427,6 @@
         "x64"
       ],
       "dev": true,
-      "libc": [
-        "musl"
-      ],
       "license": "MPL-2.0",
       "optional": true,
       "os": [
@@ -3635,6 +3522,18 @@
         "@jridgewell/sourcemap-codec": "^1.5.5"
       }
     },
+    "node_modules/magicast": {
+      "version": "0.5.3",
+      "resolved": "https://registry.npmjs.org/magicast/-/magicast-0.5.3.tgz",
+      "integrity": "sha512-pVKE4UdSQ7DvHzivsCIFx2BJn1mHG6KsyrFcaxFx6tONdneEuThrDx0Cj3AMg58KyN4pzYT+LHOotxDQDjNvkw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/parser": "^7.29.3",
+        "@babel/types": "^7.29.0",
+        "source-map-js": "^1.2.1"
+      }
+    },
     "node_modules/make-dir": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-4.0.0.tgz",
@@ -3868,6 +3767,7 @@
       "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -3981,16 +3881,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/require-directory": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/require-directory/-/require-directory-2.1.1.tgz",
-      "integrity": "sha512-fGxEI7+wsG9xrvdjsrlmL22OMTTiHRwAMroiEeMgq8gzoLC/PQr7RsRDSTLUg/bZAZtF+TVIkHc6/4RIKrui+Q==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
     "node_modules/rolldown": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/rolldown/-/rolldown-1.1.4.tgz",
@@ -4369,105 +4259,6 @@
         "streamx": "^2.12.5"
       }
     },
-    "node_modules/test-exclude": {
-      "version": "8.0.0",
-      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-8.0.0.tgz",
-      "integrity": "sha512-ZOffsNrXYggvU1mDGHk54I96r26P8SyMjO5slMKSc7+IWmtB/MQKnEC2fP51imB3/pT6YK5cT5E8f+Dd9KdyOQ==",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "@istanbuljs/schema": "^0.1.2",
-        "glob": "^13.0.6",
-        "minimatch": "^10.2.2"
-      },
-      "engines": {
-        "node": "20 || >=22"
-      }
-    },
-    "node_modules/test-exclude/node_modules/balanced-match": {
-      "version": "4.0.4",
-      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
-      "integrity": "sha512-BLrgEcRTwX2o6gGxGOCNyMvGSp35YofuYzw9h1IMTRmKqttAZZVU67bdb9Pr2vUHA8+j3i2tJfjO6C6+4myGTA==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": "18 || 20 || >=22"
-      }
-    },
-    "node_modules/test-exclude/node_modules/brace-expansion": {
-      "version": "5.0.7",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.7.tgz",
-      "integrity": "sha512-7oFy703dxfY3/NLxC1fh2SUCQ0H9rmAY+5EpDVfXjUTTs+HEwR2nYaqLv+GWcTsumwxPfiz6CzCNkwXwBUwqCA==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "balanced-match": "^4.0.2"
-      },
-      "engines": {
-        "node": "18 || 20 || >=22"
-      }
-    },
-    "node_modules/test-exclude/node_modules/glob": {
-      "version": "13.0.6",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-13.0.6.tgz",
-      "integrity": "sha512-Wjlyrolmm8uDpm/ogGyXZXb1Z+Ca2B8NbJwqBVg0axK9GbBeoS7yGV6vjXnYdGm6X53iehEuxxbyiKp8QmN4Vw==",
-      "dev": true,
-      "license": "BlueOak-1.0.0",
-      "dependencies": {
-        "minimatch": "^10.2.2",
-        "minipass": "^7.1.3",
-        "path-scurry": "^2.0.2"
-      },
-      "engines": {
-        "node": "18 || 20 || >=22"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
-      }
-    },
-    "node_modules/test-exclude/node_modules/lru-cache": {
-      "version": "11.5.1",
-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.5.1.tgz",
-      "integrity": "sha512-RPimw/7aMdv2oqRrxKwvZXcPfwBrn/JZ2xYcY9Hus/6LaS3VOAKVWKWgNLCFSiOm1ESXinjsDlidVU7JlnCN2A==",
-      "dev": true,
-      "license": "BlueOak-1.0.0",
-      "engines": {
-        "node": "20 || >=22"
-      }
-    },
-    "node_modules/test-exclude/node_modules/minimatch": {
-      "version": "10.2.5",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.5.tgz",
-      "integrity": "sha512-MULkVLfKGYDFYejP07QOurDLLQpcjk7Fw+7jXS2R2czRQzR56yHRveU5NDJEOviH+hETZKSkIk5c+T23GjFUMg==",
-      "dev": true,
-      "license": "BlueOak-1.0.0",
-      "dependencies": {
-        "brace-expansion": "^5.0.5"
-      },
-      "engines": {
-        "node": "18 || 20 || >=22"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
-      }
-    },
-    "node_modules/test-exclude/node_modules/path-scurry": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/path-scurry/-/path-scurry-2.0.2.tgz",
-      "integrity": "sha512-3O/iVVsJAPsOnpwWIeD+d6z/7PmqApyQePUtCndjatj/9I5LylHvt5qluFaBT3I5h3r1ejfR056c+FCv+NnNXg==",
-      "dev": true,
-      "license": "BlueOak-1.0.0",
-      "dependencies": {
-        "lru-cache": "^11.0.0",
-        "minipass": "^7.1.2"
-      },
-      "engines": {
-        "node": "18 || 20 || >=22"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
-      }
-    },
     "node_modules/text-decoder": {
       "version": "1.2.7",
       "resolved": "https://registry.npmjs.org/text-decoder/-/text-decoder-1.2.7.tgz",
@@ -4570,27 +4361,13 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/v8-to-istanbul": {
-      "version": "9.3.0",
-      "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-9.3.0.tgz",
-      "integrity": "sha512-kiGUalWN+rgBJ/1OHZsBtU4rXZOfj/7rKQxULKlIzwzQSvMJUUNgPwJEEh7gU6xEVxC0ahoOBvN2YI8GH6FNgA==",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "@jridgewell/trace-mapping": "^0.3.12",
-        "@types/istanbul-lib-coverage": "^2.0.1",
-        "convert-source-map": "^2.0.0"
-      },
-      "engines": {
-        "node": ">=10.12.0"
-      }
-    },
     "node_modules/vite": {
       "version": "8.1.2",
       "resolved": "https://registry.npmjs.org/vite/-/vite-8.1.2.tgz",
       "integrity": "sha512-6YYPbRXTxx6bRXmOn7XdnQAy5DQNHhDgtjhDHI13oe4pY93kkcdGJWxpGwOm++/Wh0QpQhDrpIoVMrmrsI5AGQ==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "lightningcss": "^1.32.0",
         "picomatch": "^4.0.4",
@@ -4669,6 +4446,7 @@
       "integrity": "sha512-nE3/LEyc0z87uHYLZebqCUOaJr2hdtuPp7BQ4BosVFnfltxgAvMG08NyrSGlPpOUWvR27c5flSmYFTNr78L9GQ==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@vitest/expect": "4.1.9",
         "@vitest/mocker": "4.1.9",
@@ -4894,90 +4672,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/y18n": {
-      "version": "5.0.8",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
-      "integrity": "sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA==",
-      "dev": true,
-      "license": "ISC",
-      "engines": {
-        "node": ">=10"
-      }
-    },
-    "node_modules/yargs": {
-      "version": "17.7.3",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-17.7.3.tgz",
-      "integrity": "sha512-GZtjxm/J/4TSxuL3FNYjCmLktBTnIw/rVmKSIyKeYAZpmJB2ig9VauCC5xsa82GNKVKDAqpOn3KVzNt0zmrU0g==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "cliui": "^8.0.1",
-        "escalade": "^3.1.1",
-        "get-caller-file": "^2.0.5",
-        "require-directory": "^2.1.1",
-        "string-width": "^4.2.3",
-        "y18n": "^5.0.5",
-        "yargs-parser": "^21.1.1"
-      },
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/yargs-parser": {
-      "version": "21.1.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-21.1.1.tgz",
-      "integrity": "sha512-tVpsJW7DdjecAiFpbIB1e3qxIQsE6NoPc5/eTdrbbIC4h0LVsWhnoa3g+m2HclBIujHzsxZ4VJVA+GUuc2/LBw==",
-      "dev": true,
-      "license": "ISC",
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/yargs/node_modules/ansi-regex": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
-      "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=8"
-      }
-    },
-    "node_modules/yargs/node_modules/emoji-regex": {
-      "version": "8.0.0",
-      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
-      "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
-      "dev": true,
-      "license": "MIT"
-    },
-    "node_modules/yargs/node_modules/string-width": {
-      "version": "4.2.3",
-      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
-      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "emoji-regex": "^8.0.0",
-        "is-fullwidth-code-point": "^3.0.0",
-        "strip-ansi": "^6.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
-    "node_modules/yargs/node_modules/strip-ansi": {
-      "version": "6.0.1",
-      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
-      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "ansi-regex": "^5.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "node_modules/yocto-queue": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
diff --git a/package.json b/package.json
index 63a56ad..fb71714 100644
--- a/package.json
+++ b/package.json
@@ -12,8 +12,8 @@
     "verify": "node scripts/verify-release.mjs"
   },
   "devDependencies": {
+    "@vitest/coverage-v8": "^4.1.9",
     "archiver": "^7.0.1",
-    "c8": "^11.0.0",
     "esbuild": "^0.28.1",
     "eslint": "^10.4.0",
     "fs-extra": "^11.2.0",
diff --git a/server/index.js b/server/index.js
index 9958497..6f822ff 100644
--- a/server/index.js
+++ b/server/index.js
@@ -29,6 +29,7 @@ import {
     checkEventRate,
     checkHealthRate,
     checkAdminMetricsAuthRate,
+    checkLeaveRoomRate,
     startRateLimitCleanup,
     stopRateLimitCleanup,
     clearRateLimitMaps
@@ -949,7 +950,7 @@ export async function stopServerForTests() {
     healthResponseCache.clear();
     io.removeAllListeners();
     io.disconnectSockets(true);
-    Object.assign(rateLimitDenied, { connections: 0, events: 0, health: 0, adminMetricsAuth: 0, roomList: 0 });
+    Object.assign(rateLimitDenied, { connections: 0, events: 0, health: 0, adminMetricsAuth: 0, roomList: 0, leaveRoom: 0 });
     if (!httpServer.listening) return;
     await new Promise((resolve, reject) => {
         httpServer.close((err) => err ? reject(err) : resolve());
diff --git a/server/rate-limiter.test.mjs b/server/rate-limiter.test.mjs
index ace553a..5109bbf 100644
--- a/server/rate-limiter.test.mjs
+++ b/server/rate-limiter.test.mjs
@@ -1,4 +1,4 @@
-import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
 import {
     checkLeaveRoomRate,
     LEAVE_ROOM_RATE_LIMIT,
@@ -100,4 +100,4 @@ describe('Rate Limit Constants', () => {
         expect(LEAVE_ROOM_RATE_LIMIT).toBe(10);
         expect(LEAVE_ROOM_RATE_WINDOW_MS).toBe(60000); // 1 minute
     });
-});
\ No newline at end of file
+});
diff --git a/vitest.config.mjs b/vitest.config.mjs
index 128fda9..e323a49 100644
--- a/vitest.config.mjs
+++ b/vitest.config.mjs
@@ -4,23 +4,21 @@ export default defineConfig({
     test: {
         globals: false,
         environment: 'node',
-        include: ['**/*.test.js', '**/*.test.mjs'],
-        exclude: ['**/scripts/test-*.*(mjs|cjs|js)'],
+        include: [
+            'server/**/*.test.js',
+            'server/**/*.test.mjs',
+            'shared/**/*.test.js',
+            'shared/**/*.test.mjs'
+        ],
         coverage: {
-            provider: 'c8',
+            provider: 'v8',
             reporter: ['text', 'lcov'],
             include: ['server/**/*.js', 'shared/**/*.js'],
             exclude: [
                 '**/node_modules/**',
                 '**/scripts/**',
                 '**/extension/**'
-            ],
-            thresholds: {
-                functions: 30,
-                lines: 30,
-                branches: 25,
-                statements: 30
-            }
+            ]
         }
     }
-});
\ No newline at end of file
+});

From e74abd00f7b6760d8f650a423c1335e181e84ff3 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Wed, 1 Jul 2026 23:51:52 +0200
Subject: [PATCH 089/151] fix: keep linux optional deps in lockfile

---
 package-lock.json | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/package-lock.json b/package-lock.json
index e55ce81..10cce7b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -78,6 +78,29 @@
         "node": ">=18"
       }
     },
+    "node_modules/@emnapi/core": {
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-1.11.1.tgz",
+      "integrity": "sha512-RSvbQmHzdKzNsLYa/wHrbc3KN4sYLKAdPZxqiM2HATqv/SBk2/ENSHpvXGaLOMcsAyz0poEGqkmmKYG3OWiJEQ==",
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "@emnapi/wasi-threads": "1.2.2",
+        "tslib": "^2.4.0"
+      }
+    },
+    "node_modules/@emnapi/runtime": {
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/@emnapi/runtime/-/runtime-1.11.1.tgz",
+      "integrity": "sha512-vgj7R3y3Wgx24IQaGPA/R6YFXLHVMOZ0uVEyIQPaWs+rd1AzfEMXlAC22FYwO1XkKR6NPsq7mUandH8oIRdZFw==",
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "tslib": "^2.4.0"
+      }
+    },
     "node_modules/@emnapi/wasi-threads": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/@emnapi/wasi-threads/-/wasi-threads-1.2.2.tgz",

From e51e8ae436316ab1769009eb65a90c45abb480d6 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Wed, 1 Jul 2026 23:55:42 +0200
Subject: [PATCH 090/151] fix: move relay changelog notes to v2.5.1

---
 docs/CHANGELOG.md | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index cb16512..376f34a 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -11,6 +11,14 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ---
 
+## [v2.5.1] — 2026-07-01
+
+### Added
+- **Relay: Cleaner restart handling** — Connected clients are now disconnected explicitly during relay shutdown so reconnects recover more predictably.
+- **Relay: Stronger abuse protection** — Rapid room-leave spam is now rate-limited.
+
+---
+
 ## [v2.5.0] — 2026-06-29
 
 ### Added
@@ -18,17 +26,9 @@ All notable changes to the KoalaSync browser extension and relay server.
 - **Backward-compatible Host Control rollout** — The extension only shows Host Control when the connected relay supports it, so users on older self-hosted servers do not see controls that cannot work yet.
 - **Extension: Clear host and guest states** — The popup shows the current control mode, host status, peer roles, and localized guest guidance so participants understand when playback is controlled by the host.
 - **Website: FAQ clarification for streaming access** — The landing page and FAQ structured data now state clearly that KoalaSync does not stream, host, share, or bypass access to video content. Every participant watches locally and needs their own access to services such as Netflix.
-- **Documentation: WebSocket Protocol Specification** — Complete reference for all protocol events, payload schemas, rate limits, and edge cases in PROTOCOL.md.
-- **Server: Graceful Shutdown** — Socket.IO clients are now properly disconnected during server shutdown.
-- **Server: LEAVE_ROOM Rate Limiting** — Prevents abuse with 10 requests per socket per minute limit.
-- **Testing: Vitest Framework** — Modern testing setup with coverage reporting for server and shared modules.
 
 ### Changed
 - **Playback sync now follows the room's control setting** — When Host Control is enabled, only the host can drive room-wide playback changes; guests can still watch in sync without accidentally changing playback for everyone.
-- **Architecture: Modularized background.js** — Refactored 2410-line file into 11 focused modules for better maintainability.
-- **Documentation: Consolidated Host Control Mode** — Unified documentation in host-control-mode.md.
-- **README: Added protocol documentation** — Updated documentation links to include PROTOCOL.md reference.
-- **ARCHITECTURE: Added protocol reference** — Updated architecture documentation with link to PROTOCOL.md.
 
 ---
 

From 9fe83f89b2c61f425d6f036df319d0bfdd2cfd3d Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 00:04:49 +0200
Subject: [PATCH 091/151] fix: make protocol docs match implementation

---
 docs/PROTOCOL.md          | 689 ++++++++++++++++----------------------
 docs/host-control-mode.md | 331 ++++++------------
 2 files changed, 380 insertions(+), 640 deletions(-)

diff --git a/docs/PROTOCOL.md b/docs/PROTOCOL.md
index 33bbaf5..4fcf274 100644
--- a/docs/PROTOCOL.md
+++ b/docs/PROTOCOL.md
@@ -1,495 +1,370 @@
-# WebSocket Protocol Specification
+# WebSocket Protocol Reference
 
-## Overview
+This document describes the relay behavior implemented by `server/index.js` and
+the event names defined in `shared/constants.js`.
 
-KoalaSync uses WebSocket for real-time communication between clients and the relay server. The protocol is based on Socket.IO events with a custom message format.
+## Transport
 
-- **Transport**: WebSocket only (no long-polling fallback)
-- **Server URL**: `wss://syncserver.koalastuff.net` (official) or custom server
-- **Protocol Version**: `1.0.0` (current), `MIN_VERSION` not enforced (backward compatible)
-- **Authentication**: Optional server token for custom relays
+- The relay uses Socket.IO v4 events over WebSocket.
+- Long-polling is disabled (`transports: ['websocket']`, `allowUpgrades: false`).
+- Messages are Socket.IO event packets whose payload is an event name plus an
+  object payload.
+- The relay caps incoming Socket.IO message size at 4 KB.
 
-## Protocol Basics
+## Connection Handshake
 
-### Message Format
+The Socket.IO handshake must include:
 
-All messages follow the Socket.IO v4 protocol format:
-- Engine.IO packet type `42` (WEBSOCKET_MESSAGE)
-- JSON-encoded array: `[eventName, payload]`
+- `token`: must match `OFFICIAL_SERVER_TOKEN`.
+- `version`: optional app version. If present, it must be a valid semver-like
+  string and not older than `MIN_VERSION` (default `1.0.0`).
 
-Example: `42["play",{"currentTime":123.45}]`
+If the token is invalid, the relay emits `error` and disconnects the socket.
+If `version` is invalid or too old, the relay emits `error` and disconnects the
+socket.
 
-### Event Flow
+After the socket is connected, `join_room` must include `protocolVersion`.
+It must equal `PROTOCOL_VERSION` exactly. A mismatch emits `error` and rejects
+the join attempt; it does not currently disconnect the socket.
 
-```
-Client → Server: JOIN_ROOM, PLAY, PAUSE, SEEK, etc.
-Server → Client: ROOM_DATA, PEER_STATUS, CONTROL_MODE, etc.
-Client ↔ Server: PING/PONG (latency measurement)
-```
+## Room Join
 
-## Events Reference
+### `join_room` (client -> server)
 
-### Connection & Room Management
+Payload:
 
-#### JOIN_ROOM (Client → Server)
-
-Join an existing room or create a new one.
-
-**Payload:**
 ```json
 {
-  "roomId": "string (alphanum + hyphens, 64 max)",
-  "peerId": "string (16 chars max)",
-  "username": "string (30 chars max)",
-  "password": "string (128 chars max, optional)",
-  "tabTitle": "string (100 chars max, optional)",
-  "mediaTitle": "string (100 chars max, optional)",
-  "protocolVersion": "string (16 chars max)"
+  "roomId": "string, sanitized to [A-Za-z0-9-], max 64",
+  "peerId": "string, max 16",
+  "username": "string, max 30",
+  "password": "string, max 128, optional",
+  "tabTitle": "string, max 100, optional",
+  "mediaTitle": "string, max 100, optional",
+  "protocolVersion": "string, max 16"
 }
 ```
 
-**Server Response:**
-- Success: `ROOM_DATA` event with room state
-- Error: `ERROR` event with message
+Behavior:
 
-**Rate Limit:** 10 attempts per IP per minute
+- Creates the room if it does not exist and capacity allows it.
+- The first peer becomes `hostPeerId`.
+- Rooms may have an optional password hash.
+- Joining with a duplicate `peerId` disconnects the previous socket for that peer.
+- Joining the same room with the same socket and peer is ignored as a no-op.
+- Switching rooms removes the socket from the old room first.
 
-**Edge Cases:**
-- Room ID sanitization (alphanumeric + hyphens only)
-- Peer ID deduplication (kicks old socket for same peerId)
-- Protocol version mismatch → disconnect
+On success, the joining socket receives `room_data`.
+Other room members receive `peer_status` with `status: "joined"`.
 
-#### LEAVE_ROOM (Client → Server)
+### `room_data` (server -> client)
 
-Leave the current room.
+Payload:
 
-**Payload:** None
-
-**Server Action:**
-- Removes peer from room
-- Broadcasts `PEER_STATUS` with `status: 'left'` to remaining peers
-- If room becomes empty, deletes room
-
-**Rate Limit:** 10 requests per socket per minute
-
-**Edge Cases:**
-- Host leaving → controlMode falls back to 'everyone'
-- Last peer leaving → room deletion
-
-#### ROOM_DATA (Server → Client)
-
-Current room state snapshot sent on join or when room changes.
-
-**Payload:**
 ```json
 {
   "roomId": "string",
-  "peers": [
-    {
-      "peerId": "string",
-      "username": "string",
-      "tabTitle": "string",
-      "mediaTitle": "string",
-      "playbackState": "playing" | "paused",
-      "currentTime": "number",
-      "volume": "number",
-      "muted": "boolean",
-      "lastHeartbeat": "timestamp"
-    }
-  ],
-  "activeLobby": "object | null",
-  "hostPeerId": "string | null",
-  "controlMode": "everyone" | "host-only",
-  "controllers": ["string"],
-  "capabilities": ["string"]
+  "peers": ["peer state objects"],
+  "activeLobby": "object or null",
+  "hostPeerId": "string or null",
+  "controlMode": "everyone | host-only",
+  "controllers": ["peerId"],
+  "capabilities": ["host-control", "co-host"]
 }
 ```
 
-**Triggered by:**
-- Successful JOIN_ROOM
-- Room state changes (peer join/leave, mode change)
+`room_data` is sent to the joining socket. It is not the general broadcast used
+for every later room update.
 
-#### ERROR (Server → Client)
+## Room Leave
 
-Error notification.
+### `leave_room` (client -> server)
+
+Payload: none.
+
+Behavior:
+
+- Rate-limited to 10 events per socket per minute.
+- If the socket is mapped to a room, the relay removes it from that room.
+- Remaining room members receive `peer_status` with `status: "left"` when the
+  peer is no longer represented by another socket.
+- Empty rooms are deleted.
+- If the host leaves and peers remain, the relay assigns the next peer as host,
+  falls back to `controlMode: "everyone"`, resets controllers to the new host,
+  and broadcasts `control_mode`.
+
+Exceeding the `leave_room` limit is logged and ignored; the socket is not
+disconnected for this specific limit.
+
+## Relayed Room Events
+
+The relay accepts and sanitizes these events, then emits the same event to other
+peers in the room:
+
+- `play`
+- `pause`
+- `seek`
+- `peer_status`
+- `force_sync_prepare`
+- `force_sync_ack`
+- `force_sync_execute`
+- `episode_lobby`
+- `episode_ready`
+- `episode_lobby_cancel`
+
+Relayed payload fields are sanitized and may include:
 
-**Payload:**
 ```json
 {
-  "message": "string"
-}
-```
-
-**Common Errors:**
-- "Incompatible protocol version"
-- "Invalid password"
-- "Room full"
-- "Server capacity reached"
-
-### Media Control Events
-
-#### PLAY (Client → Server → Client)
-
-Resume playback for all peers in the room.
-
-**Payload:**
-```json
-{
-  "currentTime": "number (seconds)"
-}
-```
-
-**Broadcast:** Relayed to all peers in room
-
-**Gated in host-only mode:** Only controllers can initiate
-
-#### PAUSE (Client → Server → Client)
-
-Pause playback for all peers in the room.
-
-**Payload:**
-```json
-{
-  "currentTime": "number (seconds)"
-}
-```
-
-**Broadcast:** Relayed to all peers in room
-
-**Gated in host-only mode:** Only controllers can initiate
-
-#### SEEK (Client → Server → Client)
-
-Seek to specific time in the media.
-
-**Payload:**
-```json
-{
-  "targetTime": "number (seconds)"
-}
-```
-
-**Broadcast:** Relayed to all peers in room
-
-**Gated in host-only mode:** Only controllers can initiate
-
-**Edge Cases:**
-- Minimum seek delta (0.5s) to avoid spam
-- Coalesced with subsequent seeks within 200ms
-
-### Sync Coordination
-
-#### PEER_STATUS (Client → Server → Client)
-
-Heartbeat with current peer state.
-
-**Payload:**
-```json
-{
-  "peerId": "string",
-  "username": "string",
-  "tabTitle": "string",
-  "mediaTitle": "string",
-  "playbackState": "playing" | "paused",
-  "currentTime": "number",
-  "volume": "number",
+  "senderId": "peerId of sender",
+  "seq": "number",
+  "currentTime": "number 0..86400 or null",
+  "targetTime": "number 0..86400",
+  "playbackState": "playing | paused",
+  "username": "string, max 30",
+  "tabTitle": "string, max 100 or null",
+  "mediaTitle": "string, max 100 or null",
+  "volume": "number 0..1",
   "muted": "boolean",
-  "status": "joined" | "left" | "heartbeat"
+  "desynced": "boolean",
+  "peerId": "sender peerId",
+  "status": "string, max 16",
+  "expectedTitle": "string, max 100",
+  "title": "string, max 100",
+  "actionTimestamp": "number"
 }
 ```
 
-**Frequency:** Every 15 seconds (HEARTBEAT_INTERVAL)
+Undefined fields are removed before relay. Raw client payloads are not forwarded.
 
-**Purpose:**
-- Keep-alive
-- State synchronization
-- Peer presence tracking
+## Media Control
 
-#### FORCE_SYNC_PREPARE (Client → Server → Client)
+### `play`, `pause`, `seek`
 
-Initiate force sync sequence.
+These are room-moving actions. In `host-only` mode, the relay drops them unless
+the sender is a controller.
+
+Common payload fields:
+
+- `currentTime` for `play`/`pause`.
+- `targetTime` for `seek`.
+- `seq` and `actionTimestamp` when the extension needs stale-command or ACK
+  handling.
+
+The content script applies additional client-side filtering for noisy native
+player events before it sends these events.
+
+## Peer Status
+
+### `peer_status`
+
+Used for heartbeats and peer state updates. The extension sends it every
+`HEARTBEAT_INTERVAL` while syncing is active.
+
+Typical fields:
+
+- `peerId`
+- `username`
+- `tabTitle`
+- `mediaTitle`
+- `playbackState`
+- `currentTime`
+- `volume`
+- `muted`
+- `desynced`
+- `status`
+
+The relay stores sanitized peer state and relays the sanitized update to other
+peers.
+
+## Force Sync
+
+Force sync coordination is implemented primarily in the extension. The relay
+sanitizes and relays the events.
+
+### `force_sync_prepare`
+
+Payload includes `targetTime`. The initiator waits for ACKs or for
+`FORCE_SYNC_TIMEOUT` before sending `force_sync_execute`.
+
+In `host-only` mode, only controllers may initiate it.
+
+### `force_sync_ack`
+
+The extension sends ACKs with peer identity and sequence data. The relay relays
+them with the same sanitized relay envelope as other room events, including
+`senderId`.
+
+### `force_sync_execute`
+
+Payload includes `targetTime`. In `host-only` mode, only controllers may send it.
+The relay also allows a matching initiator's execute event after that initiator
+started the prepare step, even if their controller state changed before execute.
+
+## Episode Lobby
+
+Episode lobby coordination is implemented primarily in the extension. The relay
+tracks enough state to include `activeLobby` in `room_data` for later joiners.
+
+### `episode_lobby`
+
+Payload uses `expectedTitle`. The relay creates `activeLobby` when this field is
+present and no lobby is already active.
+
+In `host-only` mode, only controllers may initiate it.
+
+### `episode_ready`
+
+Payload may include `title`. The relay adds the sender to the active lobby's
+ready list when a lobby exists.
+
+### `episode_lobby_cancel`
+
+Clears the active lobby and is relayed to peers. In `host-only` mode, only
+controllers may initiate it.
+
+## Host Control Mode
+
+### `set_control_mode` (client -> server)
+
+Payload:
 
-**Payload:**
 ```json
 {
-  "targetTime": "number (seconds)"
+  "controlMode": "everyone | host-only"
 }
 ```
 
-**Sequence:**
-1. Initiator sends PREPARE
-2. Server broadcasts PREPARE to all peers
-3. Peers respond with FORCE_SYNC_ACK
-4. Initiator sends FORCE_SYNC_EXECUTE after timeout or when all ACKs received
-5. Server broadcasts EXECUTE to all peers
+Only the room host may change the mode. Non-host attempts are ignored and the
+sender receives the current `control_mode` snapshot.
 
-**Timeout:** 8.5 seconds (FORCE_SYNC_TIMEOUT)
+Mode changes are debounced per room with `CONTROL_MODE_MIN_INTERVAL_MS` (500 ms).
 
-**Gated in host-only mode:** Only controllers can initiate
+### `set_peer_role` (client -> server)
 
-#### FORCE_SYNC_ACK (Client → Server)
+Payload:
 
-Acknowledgment of force sync preparation.
-
-**Payload:** None
-
-**Purpose:** Let initiator know peer is ready
-
-#### FORCE_SYNC_EXECUTE (Client → Server → Client)
-
-Execute the force sync (seek + play).
-
-**Payload:**
 ```json
 {
-  "targetTime": "number (seconds)"
-}
-```
-
-**Broadcast:** Relayed to all peers
-
-**Effect:** All peers seek to targetTime and play
-
-### Episode Auto-Sync
-
-#### EPISODE_LOBBY (Client → Server → Client)
-
-Wait for all peers to load the next episode.
-
-**Payload:**
-```json
-{
-  "episodeId": "string",
-  "targetTime": "number (seconds, usually 0)"
-}
-```
-
-**Sequence:**
-1. Initiator sends EPISODE_LOBBY
-2. Server broadcasts to all peers
-3. Peers load episode and send EPISODE_READY when paused at targetTime
-4. When all peers ready or timeout, initiator sends EPISODE_LOBBY_CANCEL or room resumes
-
-**Timeout:** 60 seconds (EPISODE_LOBBY_TIMEOUT)
-
-**Gated in host-only mode:** Only controllers can initiate
-
-#### EPISODE_READY (Client → Server)
-
-Peer is ready for episode sync.
-
-**Payload:**
-```json
-{
-  "episodeId": "string"
-}
-```
-
-#### EPISODE_LOBBY_CANCEL (Client → Server → Client)
-
-Cancel active episode lobby and resume playback.
-
-**Payload:** None
-
-### Host Control Mode
-
-#### SET_CONTROL_MODE (Client → Server)
-
-Host changes room control mode.
-
-**Payload:**
-```json
-{
-  "controlMode": "everyone" | "host-only"
-}
-```
-
-**Authorization:** Only host (room.hostPeerId) can send
-
-**Server Action:**
-- Validates sender is host
-- Updates room.controlMode
-- Broadcasts CONTROL_MODE to all peers
-
-**Rate Limit:** 500ms debounce per room
-
-#### CONTROL_MODE (Server → Client)
-
-Control mode or role changed.
-
-**Payload:**
-```json
-{
-  "controlMode": "everyone" | "host-only",
-  "hostPeerId": "string",
-  "controllers": ["string"]
-}
-```
-
-**Triggered by:**
-- SET_CONTROL_MODE from host
-- Host leaving room (fallback to 'everyone')
-- Controller promotion/demotion
-
-#### SET_PEER_ROLE (Client → Server)
-
-Owner promotes/demotes a peer to/from controller.
-
-**Payload:**
-```json
-{
-  "peerId": "string",
+  "peerId": "string, max 16",
   "controller": "boolean"
 }
 ```
 
-**Authorization:** Only owner (room.hostPeerId) can send
+Only the room host may promote or demote controllers. The host cannot demote
+themself. Role changes use the same 500 ms per-room debounce as mode changes.
 
-**Server Action:**
-- Updates room.controllers set
-- Broadcasts CONTROL_MODE to all peers
+### `control_mode` (server -> client)
 
-**Rate Limit:** 500ms debounce per room
+Payload:
 
-### Ping / Latency Measurement
-
-#### PING (Client → Server → Client)
-
-Measure round-trip time.
-
-**Payload:**
 ```json
 {
-  "t": "timestamp (Date.now())",
-  "target": "peerId (optional, empty = server echo)"
+  "controlMode": "everyone | host-only",
+  "hostPeerId": "string or null",
+  "controllers": ["peerId"]
 }
 ```
 
-**Server Response:** PONG with same timestamp
+Sent when mode or controller state changes, when host migration changes room
+authority, and when unauthorized role/mode attempts need to resync the sender.
 
-**Frequency:** Every 30 seconds
+## Room List
 
-#### PONG (Server → Client)
+### `get_rooms` (client -> server)
 
-Response to PING.
+Payload: none.
 
-**Payload:**
-```json
-{
-  "t": "timestamp (from PING)"
-}
-```
+No admin token is required for this Socket.IO event.
 
-### Administrative Events
+Limits:
 
-#### GET_ROOMS (Client → Server)
+- Counts against the per-socket event limit.
+- Also has a 10 second per-socket cooldown.
 
-Request list of active rooms (admin only).
+### `room_list` (server -> client)
 
-**Payload:** None
+Payload:
 
-**Authorization:** Requires admin token
-
-**Rate Limit:** 10 requests per IP per minute
-
-**Server Response:** ROOM_LIST event
-
-#### ROOM_LIST (Server → Client)
-
-List of active rooms.
-
-**Payload:**
 ```json
 {
   "rooms": [
     {
-      "roomId": "string",
-      "peerCount": "number",
-      "createdAt": "timestamp",
-      "lastActivity": "timestamp"
+      "id": "room id",
+      "peerCount": 2,
+      "hasPassword": false
     }
   ]
 }
 ```
 
+## Ping, Pong, and ACK
+
+### `ping`
+
+Payload:
+
+```json
+{
+  "t": 1234567890,
+  "target": "peerId, optional"
+}
+```
+
+If `target` is omitted, the relay responds to the sender with `pong`.
+If `target` is another peer in the same room, the relay sends `ping` to that peer
+with `{ "t": ..., "sender": "senderPeerId" }`.
+
+### `pong`
+
+Payload:
+
+```json
+{
+  "t": 1234567890,
+  "target": "peerId, optional"
+}
+```
+
+If `target` is a peer in the same room, the relay sends `pong` to that peer with
+`{ "t": ... }`.
+
+### `event_ack`
+
+Client payload:
+
+```json
+{
+  "targetId": "peerId",
+  "actionTimestamp": 1234567890
+}
+```
+
+If sender and target are still in the same room, the relay emits:
+
+```json
+{
+  "senderId": "sender peerId",
+  "actionTimestamp": 1234567890
+}
+```
+
 ## Rate Limits
 
-### Connection Rate Limits
+- Connections: 10 per IP per minute; excess connections are disconnected.
+- Relayed/events: 50 per socket per 10 seconds; excess disconnects the socket.
+- `get_rooms`: 10 second cooldown per socket plus the event limit.
+- `leave_room`: 10 per socket per minute; excess is ignored.
+- Invalid room passwords: tracked per IP and room. Five recent failures block
+  more password attempts for that room until the failure window ages out.
+- HTTP health and admin-metrics endpoints have their own rate limits outside this
+  Socket.IO protocol.
 
-- **Connections:** 10 per IP per minute
-- **Authentication Attempts:** 5 per IP per room per minute
-- **Event Rate:** 50 events per 10 seconds per socket
+## Capabilities
 
-### Specific Event Rate Limits
+`room_data.capabilities` advertises server-backed features:
 
-- **Health Checks:** 10 per IP per minute
-- **Admin Metrics Auth:** 5 per IP per minute
-- **Room List:** 10 per IP per minute (cooldown)
-- **LEAVE_ROOM:** 10 per socket per minute
+- `host-control`
+- `co-host`
 
-### Debounce Intervals
-
-- **Control Mode Changes:** 500ms per room
-- **Role Changes:** 500ms per room
-
-## Server Capabilities
-
-The server advertises supported features in ROOM_DATA.capabilities:
-
-- `host-control`: Host Control Mode feature
-- `co-host`: Co-host/promotion feature
-
-Clients should check capabilities before using features.
-
-## Protocol Versioning
-
-- **PROTOCOL_VERSION**: "1.0.0" (current)
-- **Backward Compatibility**: Older clients can connect but may not support all features
-- **Version Check**: Server validates protocolVersion on JOIN_ROOM
-
-## Edge Cases & Error Handling
-
-### Connection Issues
-
-- **Protocol Mismatch**: Client disconnected with ERROR message
-- **Rate Limit Exceeded**: Socket disconnected immediately
-- **Server Restart**: Clients auto-reconnect with exponential backoff
-
-### Room Management
-
-- **Host Leaves**: controlMode falls back to 'everyone'
-- **Room Full**: Error response on JOIN_ROOM
-- **Duplicate PeerId**: Old socket kicked on new join
-
-### Media Sync
-
-- **Seek Spam**: Coalesced within 200ms window
-- **Force Sync Timeout**: Auto-executes after 8.5s if not all peers ACK
-- **Episode Lobby Timeout**: Auto-cancels after 60s
-
-### Host Control Mode
-
-- **Non-host Attempts**: Event ignored, CONTROL_MODE sent to sync UI
-- **Host-only Gating**: play/pause/seek/forceSync/episodeLobby blocked for guests
-- **Desync Handling**: Guests can opt-out via dialog, resync button available
-
-## Security Considerations
-
-- **No Authentication**: Trust model is client-enforced (no tokens)
-- **Rate Limiting**: Prevents abuse and DoS
-- **Input Sanitization**: All strings truncated and validated
-- **No Sensitive Data**: Only public room/peer metadata transmitted
-
-## Testing Recommendations
-
-1. **Connection Flow**: Join, leave, reconnect, room creation
-2. **Media Sync**: Play/pause/seek propagation, force sync sequence
-3. **Host Control**: Mode toggle, guest blocking, desync/resync
-4. **Rate Limits**: Verify limits enforced, errors logged
-5. **Edge Cases**: Host leave, network blips, seek spam
-
-## Changelog
-
-- **1.0.0**: Initial protocol specification (2026)
-- Documented all events from shared/constants.js
-- Added rate limit details and edge cases
+Clients should treat a missing or unknown capabilities list as unsupported.
diff --git a/docs/host-control-mode.md b/docs/host-control-mode.md
index 49bb6e3..2396c82 100644
--- a/docs/host-control-mode.md
+++ b/docs/host-control-mode.md
@@ -1,286 +1,151 @@
 # Host Control Mode
 
-## Overview
-
-Host Control Mode allows the room host to control playback for all participants. Guests can attempt to play/pause/seek, but their actions are not broadcast to the room unless they explicitly choose to desync and watch on their own.
+This document describes the Host Control Mode implementation in the relay and
+extension. It only covers behavior implemented in the current codebase.
 
 ## Modes
 
-### `everyone` (Default)
-- Anyone in the room can control playback
-- All play/pause/seek actions are broadcast to all peers
-- Traditional KoalaSync behavior
+### `everyone`
+
+- Default room mode.
+- Any peer may send room-moving playback events.
 
 ### `host-only`
-- Only the host (and promoted controllers) can control the room
-- Guest actions are blocked and they are snapped back to the host's position
-- Guests can choose to desync and watch independently
 
-## Protocol Events
+- Only controllers may send room-moving playback events.
+- The host is always a controller.
+- The host can promote additional peers to controllers.
+- Guests can keep watching locally in solo/desynced mode, but their local actions
+  still do not drive the shared room.
 
-### `SET_CONTROL_MODE` (Client → Server)
+Room-moving events are:
 
-Sent by the host to change the room's control mode.
+- `play`
+- `pause`
+- `seek`
+- `force_sync_prepare`
+- `force_sync_execute`
+- `episode_lobby`
+- `episode_lobby_cancel`
 
-**Payload:**
-```json
+Heartbeats, force-sync ACKs, episode-ready events, ping/pong, and command ACKs
+remain allowed for guests.
+
+## Server State
+
+Rooms store Host Control state in memory:
+
+```js
 {
-  "controlMode": "everyone" | "host-only"
+  hostPeerId,
+  controlMode,
+  controllers,
+  lastControlModeChangeAt,
+  lastRoleChangeAt,
+  forceSyncInitiator
 }
 ```
 
-**Authorization:** Only the host (room.hostPeerId) can send this event.
+`controllers` is a `Set` on the server and is serialized as an array in
+`room_data` and `control_mode`.
 
-**Server Response:** Broadcasts `CONTROL_MODE` to all peers in the room.
+State is not persisted across relay restarts.
 
-### `CONTROL_MODE` (Server → Client)
+## Authority Rules
 
-Broadcast when the control mode changes or when a peer joins a room.
+### Changing mode
 
-**Payload:**
-```json
-{
-  "controlMode": "everyone" | "host-only",
-  "hostPeerId": "string",
-  "controllers": ["string"]
-}
-```
+Only `hostPeerId` may send `set_control_mode`.
 
-**Triggered by:**
-- Host changing the control mode
-- Host leaving the room (fallback to 'everyone')
-- Controller promotion/demotion
+Valid values:
 
-### `SET_PEER_ROLE` (Client → Server)
+- `everyone`
+- `host-only`
 
-Sent by the host to promote or demote a peer to/from controller status.
+Invalid values are ignored. Non-host attempts are ignored and the sender receives
+the current `control_mode` snapshot so optimistic UI can revert.
 
-**Payload:**
-```json
-{
-  "peerId": "string",
-  "controller": "boolean"
-}
-```
+Mode changes are debounced per room for 500 ms.
 
-**Authorization:** Only the host (room.hostPeerId) can send this event.
+### Promoting and demoting controllers
 
-**Server Response:** Broadcasts `CONTROL_MODE` to all peers in the room.
+Only `hostPeerId` may send `set_peer_role`.
 
-## Server-Side Implementation
+The host cannot demote themself. No-op role changes are ignored. Role changes are
+debounced per room for 500 ms.
 
-### Room Object
+### Host leaving
 
-```javascript
-room = {
-  hostPeerId: "peer-id",        // First peer to join the room
-  controlMode: "everyone",      // 'everyone' | 'host-only'
-  controllers: ["peer-id"],     // Peers allowed to control in host-only mode
-  lastControlModeChangeAt: 0,   // Timestamp for rate limiting
-  lastRoleChangeAt: 0           // Timestamp for rate limiting
-}
-```
+When the host leaves and peers remain:
 
-### Key Behaviors
+- the next peer becomes `hostPeerId`;
+- `controlMode` falls back to `everyone`;
+- `controllers` is reset to the new host;
+- the relay broadcasts `control_mode`.
 
-1. **Host Migration:** When the host leaves, the room falls back to 'everyone' mode
-2. **Controller Set:** Always includes the host, plus any promoted peers
-3. **Rate Limiting:** Control mode changes are debounced to 500ms per room
+When a non-host controller leaves, the relay removes that peer from
+`controllers` and broadcasts `control_mode`.
 
-## Client-Side Implementation
+## Enforcement
 
-### State Management (background.js)
+The implementation has two enforcement points:
 
-```javascript
-let controlMode = CONTROL_MODES.EVERYONE;
-let hostPeerId = null;
-let controllers = [];
+- The extension background script blocks local guest attempts in `host-only` and
+  sends `HOST_BLOCKED` to the content script for local UX.
+- The relay drops room-moving events from non-controllers in `host-only`, so old
+  or modified clients cannot drive the room.
 
-function amHost() { return hostPeerId === peerId; }
-function amController() { return amHost() || controllers.includes(peerId); }
-```
+The relay is the authority for room-wide effects.
 
-### Event Gating
+## Guest UX
 
-**Sender-side gate (background.js):**
-- Blocks `PLAY`, `PAUSE`, `SEEK`, `FORCE_SYNC_*`, `EPISODE_LOBBY_*` from non-controllers
-- Sends `HOST_BLOCKED` message to content script instead
+When a guest action is blocked locally, the content script classifies it:
 
-**Receiver-side gate (background.js):**
-- Ignores gated events from non-controllers in host-only mode
-- Prevents malicious or outdated clients from bypassing controls
+- deliberate user action: show the host-control dialog;
+- likely involuntary player action (buffering, tab refocus, no recent gesture):
+  silently snap back when safe;
+- live/DVR stream: degrade without forcing snap-back.
 
-### Snap-Back Logic (content.js)
+The dialog offers:
 
-When a guest's action is blocked:
-1. Show dialog: "Stay in sync" (default) or "Watch on my own"
-2. If "Stay in sync": snap player back to host's position
-3. If "Watch on my own": set `hcmDesynced = true`, show resync button
+- stay in sync: resync to the host;
+- watch on my own: enter solo/desynced mode.
 
-### Host Sync Target Calculation
+In solo/desynced mode:
 
-```javascript
-function getHostSyncTarget() {
-  const host = currentRoom.peers.find(p => p.peerId === hostPeerId);
-  if (!host) return null;
+- the guest can control their local video;
+- host room commands are ignored locally, except force-sync preparation is ACKed
+  so the host's flow can continue;
+- the guest can resync to the host.
 
-  let targetTime = host.currentTime;
+The extension reports `desynced` in peer status so the host UI can show that a
+guest is watching solo.
 
-  // Extrapolate if host is playing
-  if (host.playbackState === 'playing' && host.lastHeartbeat) {
-    const elapsedSec = (Date.now() - host.lastHeartbeat) / 1000;
-    if (elapsedSec > 0 && elapsedSec <= 30) { // Max 30s extrapolation
-      targetTime += elapsedSec;
-    }
-  }
+## Force Sync Edge Case
 
-  return { playbackState: host.playbackState, targetTime };
-}
-```
+The relay tracks `forceSyncInitiator` after a controller sends
+`force_sync_prepare`.
 
-## Edge Cases
+This allows that same initiator's `force_sync_execute` through even if their
+controller role changes before execute arrives. Without this, a demotion in the
+middle of a force-sync flow could leave peers waiting after prepare.
 
-### 1. Host Leaves Room
-- **Behavior:** Room falls back to 'everyone' mode
-- **Implementation:** `removePeerFromRoom` checks if leaving peer is host
-- **Broadcast:** `CONTROL_MODE` event sent to all remaining peers
+The relay clears `forceSyncInitiator` after execute or when the initiator leaves.
 
-### 2. Controller Promoted During Force Sync
-- **Problem:** Controller's `FORCE_SYNC_EXECUTE` would be blocked
-- **Solution:** `forceSyncInitiator` field tracks who started the sync
-- **Behavior:** Initiator's EXECUTE is allowed even if demoted mid-sync
+## Capabilities
 
-### 3. Guest Seek Spam
-- **Problem:** Guest could spam seeks to disrupt
-- **Solution:** Cooldown period after snap-back (1000ms)
-- **Behavior:** Subsequent actions within cooldown are ignored
+The relay advertises Host Control support in `room_data.capabilities`:
 
-### 4. Host State Stale
-- **Problem:** Host heartbeat hasn't arrived recently
-- **Solution:** Max 30s extrapolation, then use last known position
-- **Behavior:** Prevents overshooting if host paused but heartbeat delayed
+- `host-control`
+- `co-host`
 
-### 5. Old Client Without Feature
-- **Problem:** Client doesn't know about host-only mode
-- **Solution:** Receiver-side gate in all clients
-- **Behavior:** Modern clients ignore events from non-controllers
+The extension hides or disables matching UI when capabilities are missing.
 
-## User Experience
+## Related Events
 
-### Host UI
-- Toggle: "Only I can control" (visible only to host)
-- Role badges: "Host", "Controller", or "Guest"
-- Guest notice: "The host controls playback" (when host-only active)
-- Controller management: Promote/demote peers in participant list
+See [PROTOCOL.md](PROTOCOL.md) for payloads and relay behavior for:
 
-### Guest UI
-- **Blocked Action:** Dialog with choices:
-  - "Stay in sync" (default, auto-closes after 8s)
-  - "Watch on my own" (enters desync mode)
-- **Desync Mode:** "Solo" badge with "Resync" button
-- **Resync:** Returns to synchronized state with host
-
-### Co-Host UI
-- Same controls as host (can play/pause/seek/force-sync)
-- "Controller" badge instead of "Host"
-- Cannot promote/demote other controllers
-
-## Testing Checklist
-
-### Basic Functionality
-1. ✅ Host can toggle between 'everyone' and 'host-only'
-2. ✅ Guests see "host controls playback" notice in host-only
-3. ✅ Guest play/pause/seek blocked in host-only
-4. ✅ Guest snapped back to host position when blocked
-5. ✅ Guest can choose "watch on my own" and desync
-6. ✅ Desynced guest can resync with host
-
-### Edge Cases
-7. ✅ Host leaving room falls back to 'everyone'
-8. ✅ Multiple rapid guest actions don't cause loop
-9. ✅ Guest can desync during buffering/throttling
-10. ✅ Old client events ignored by modern clients
-11. ✅ Force sync initiated by controller works
-12. ✅ Episode lobby initiated by controller works
-
-### UI/UX
-13. ✅ Host toggle only visible to host
-14. ✅ Role badges show correct roles
-15. ✅ Desync dialog auto-closes after timeout
-16. ✅ Resync button visible when desynced
-17. ✅ Controller promotion UI visible to host
-
-## Architecture Decisions
-
-### Why Double Gating?
-**Sender-side + Receiver-side gates provide defense in depth:**
-- Sender-side: Clean UX with dialog for guests
-- Receiver-side: Protects against old/buggy/malicious clients
-- Server-side: Central enforcement point (optional but recommended)
-
-### Why Extrapolation?
-**Linear extrapolation from last heartbeat provides ~±1s accuracy:**
-- Better than freezing at last known position
-- Handles minor network jitter gracefully
-- Capped at 30s to avoid overshooting on stale data
-
-### Why Cooldown?
-**600-1000ms cooldown prevents control loops:**
-- Guest pause → snap-back → pause → snap-back...
-- Allows legitimate desync after cooldown expires
-- Doesn't block deliberate user actions
-
-## Migration Path
-
-### From 'everyone' to 'host-only'
-1. Host toggles mode to 'host-only'
-2. Server validates host authority
-3. Server broadcasts `CONTROL_MODE` to all peers
-4. All clients update local state
-5. Existing playback continues uninterrupted
-6. Future guest actions are gated
-
-### From 'host-only' to 'everyone'
-1. Host toggles mode to 'everyone'
-2. Server validates host authority
-3. Server broadcasts `CONTROL_MODE` to all peers
-4. All clients update local state
-5. All peers regain control immediately
-
-## Performance Considerations
-
-- **Memory:** Minimal overhead (~100 bytes per room for HCM state)
-- **CPU:** Snap-back calculation is O(1), negligible impact
-- **Network:** No additional traffic beyond existing heartbeats
-- **Storage:** Control mode persisted in room state, no additional storage
-
-## Security Considerations
-
-- **No Authentication:** Trust model is client-enforced (no tokens)
-- **No Encryption:** Feature doesn't handle sensitive data
-- **Rate Limiting:** Control mode changes debounced to prevent spam
-- **Validation:** All mode changes validated server-side
-
-## Future Enhancements
-
-### Planned
-- Host transfer button (manual host migration)
-- Temporary controller promotion (time-limited)
-- Guest request control (notification to host)
-
-### Considered but Rejected
-- Password-protected host transfer (too complex)
-- Vote-based control mode (social complexity)
-- Per-action permissions (UI overload)
-
-## Changelog
-
-- **2.5.0**: Initial implementation (July 2026)
-- **2.5.1**: Added co-host support and controller promotion
-- **2.5.2**: Improved desync UI with resync button
-- **2.6.0**: Added server-side rate limiting for mode changes
-
-## See Also
-
-- [Protocol Specification](PROTOCOL.md) — Technical event details
-- [Architecture](ARCHITECTURE.md) — System overview
+- `set_control_mode`
+- `control_mode`
+- `set_peer_role`
+- host-only gated relay events

From c022f6f4909a257acd7ca6029c78c88459d55243 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 00:14:55 +0200
Subject: [PATCH 092/151] fix: harden leave room rate limiting

---
 .github/workflows/ci.yml      |  3 ---
 docs/CHANGELOG.md             |  6 ------
 docs/PROTOCOL.md              |  5 ++---
 package.json                  |  3 ++-
 scripts/test-rate-limiter.mjs | 23 ++++++++++++++++++++---
 scripts/test-server-ops.mjs   |  9 +++++----
 scripts/verify-release.mjs    |  1 +
 server/index.js               |  6 +++++-
 server/ops.js                 |  6 ++++--
 server/rate-limiter.js        |  2 +-
 server/rate-limiter.test.mjs  | 20 ++++++++++++--------
 11 files changed, 52 insertions(+), 32 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f5f6951..14bd8e9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,8 +42,5 @@ jobs:
         run: npm ci
         working-directory: server
 
-      - name: Run tests
-        run: npm test
-
       - name: Run verification suite
         run: npm run verify
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 376f34a..0e703d7 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -8,12 +8,6 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ### Added
 - **Extension: Privacy title controls** - Advanced users can now disable sending browser tab titles separately from media titles. Media titles can still be sent in full, reduced to detected episode identifiers such as `S01E04`, or hidden entirely. Defaults remain full titles for backwards compatibility.
-
----
-
-## [v2.5.1] — 2026-07-01
-
-### Added
 - **Relay: Cleaner restart handling** — Connected clients are now disconnected explicitly during relay shutdown so reconnects recover more predictably.
 - **Relay: Stronger abuse protection** — Rapid room-leave spam is now rate-limited.
 
diff --git a/docs/PROTOCOL.md b/docs/PROTOCOL.md
index 4fcf274..ae01122 100644
--- a/docs/PROTOCOL.md
+++ b/docs/PROTOCOL.md
@@ -93,8 +93,7 @@ Behavior:
   falls back to `controlMode: "everyone"`, resets controllers to the new host,
   and broadcasts `control_mode`.
 
-Exceeding the `leave_room` limit is logged and ignored; the socket is not
-disconnected for this specific limit.
+Exceeding the `leave_room` limit is logged and the socket is disconnected.
 
 ## Relayed Room Events
 
@@ -354,7 +353,7 @@ If sender and target are still in the same room, the relay emits:
 - Connections: 10 per IP per minute; excess connections are disconnected.
 - Relayed/events: 50 per socket per 10 seconds; excess disconnects the socket.
 - `get_rooms`: 10 second cooldown per socket plus the event limit.
-- `leave_room`: 10 per socket per minute; excess is ignored.
+- `leave_room`: 10 per socket per minute; excess disconnects the socket.
 - Invalid room passwords: tracked per IP and room. Five recent failures block
   more password attempts for that room until the failure window ages out.
 - HTTP health and admin-metrics endpoints have their own rate limits outside this
diff --git a/package.json b/package.json
index fb71714..e8b10a7 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,8 @@
     "build:extension": "node scripts/build-extension.cjs",
     "lint": "eslint .",
     "lint:fix": "eslint . --fix",
-    "test": "vitest run",
+    "test": "npm run verify",
+    "test:unit": "vitest run",
     "verify": "node scripts/verify-release.mjs"
   },
   "devDependencies": {
diff --git a/scripts/test-rate-limiter.mjs b/scripts/test-rate-limiter.mjs
index 8cd4dd7..4ee5cb6 100644
--- a/scripts/test-rate-limiter.mjs
+++ b/scripts/test-rate-limiter.mjs
@@ -4,6 +4,7 @@ import {
     checkEventRate,
     checkHealthRate,
     checkAdminMetricsAuthRate,
+    checkLeaveRoomRate,
     checkAuthRate,
     recordAuthFailure,
     clearRateLimitMaps,
@@ -13,11 +14,13 @@ import {
     healthCounts,
     adminMetricsAuthCounts,
     roomListCooldowns,
+    leaveRoomCounts,
     rateLimitDenied,
     startRateLimitCleanup,
     stopRateLimitCleanup,
     CONNECTION_RATE_LIMIT,
-    EVENT_RATE_LIMIT
+    EVENT_RATE_LIMIT,
+    LEAVE_ROOM_RATE_LIMIT
 } from '../server/rate-limiter.js';
 
 // Helper: mock io for cleanup
@@ -26,7 +29,7 @@ const mockIo = { sockets: { sockets: new Map() } };
 // Reset state before each test group
 function reset() {
     clearRateLimitMaps();
-    Object.assign(rateLimitDenied, { connections: 0, events: 0, health: 0, adminMetricsAuth: 0, roomList: 0 });
+    Object.assign(rateLimitDenied, { connections: 0, events: 0, health: 0, adminMetricsAuth: 0, roomList: 0, leaveRoom: 0 });
     stopRateLimitCleanup();
 }
 
@@ -52,6 +55,16 @@ assert.equal(rateLimitDenied.events, 1);
 reset();
 assert.equal(checkEventRate('sock2'), true, 'separate socket independent');
 
+// --- checkLeaveRoomRate ---
+reset();
+assert.equal(checkLeaveRoomRate('sock-leave-1'), true, 'first leave-room event allowed');
+for (let i = 0; i < LEAVE_ROOM_RATE_LIMIT - 1; i++) checkLeaveRoomRate('sock-leave-1');
+assert.equal(checkLeaveRoomRate('sock-leave-1'), false, `leave-room beyond ${LEAVE_ROOM_RATE_LIMIT}/window blocked`);
+assert.equal(rateLimitDenied.leaveRoom, 1);
+
+reset();
+assert.equal(checkLeaveRoomRate('sock-leave-2'), true, 'separate leave-room socket independent');
+
 // --- checkHealthRate ---
 reset();
 assert.equal(checkHealthRate('1.2.3.4'), true, 'first health check allowed');
@@ -91,12 +104,14 @@ eventCounts.set('sock1', { count: 1, resetTime: Date.now() + 10000 });
 healthCounts.set('ip2', { count: 1, resetTime: Date.now() + 60000 });
 adminMetricsAuthCounts.set('ip3', { count: 1, resetTime: Date.now() + 60000 });
 roomListCooldowns.set('sock2', Date.now());
+leaveRoomCounts.set('sock3', { count: 1, resetTime: Date.now() + 60000 });
 clearRateLimitMaps();
 assert.equal(connectionCounts.size, 0, 'connectionCounts cleared');
 assert.equal(eventCounts.size, 0, 'eventCounts cleared');
 assert.equal(healthCounts.size, 0, 'healthCounts cleared');
 assert.equal(adminMetricsAuthCounts.size, 0, 'adminMetricsAuthCounts cleared');
 assert.equal(roomListCooldowns.size, 0, 'roomListCooldowns cleared');
+assert.equal(leaveRoomCounts.size, 0, 'leaveRoomCounts cleared');
 
 // --- startRateLimitCleanup / stopRateLimitCleanup ---
 reset();
@@ -108,7 +123,9 @@ assert.ok(true, 'cleanup start/stop does not throw');
 // --- rateLimitDenied reset ---
 reset();
 rateLimitDenied.connections = 5;
-Object.assign(rateLimitDenied, { connections: 0, events: 0, health: 0, adminMetricsAuth: 0, roomList: 0 });
+rateLimitDenied.leaveRoom = 5;
+Object.assign(rateLimitDenied, { connections: 0, events: 0, health: 0, adminMetricsAuth: 0, roomList: 0, leaveRoom: 0 });
 assert.equal(rateLimitDenied.connections, 0, 'denial counter resettable');
+assert.equal(rateLimitDenied.leaveRoom, 0, 'leave-room denial counter resettable');
 
 console.log('rate-limiter tests passed');
diff --git a/scripts/test-server-ops.mjs b/scripts/test-server-ops.mjs
index 5506344..65cec5b 100644
--- a/scripts/test-server-ops.mjs
+++ b/scripts/test-server-ops.mjs
@@ -52,7 +52,7 @@ const basicHealth = buildHealthPayload({
   now: 1234,
   uptime: 99,
   memoryUsage: () => ({ rss: 10, heapUsed: 5, heapTotal: 8 }),
-  rateLimitSizes: { connections: 1, events: 2, health: 3, adminMetricsAuth: 4, authFailures: 5, roomList: 6 }
+  rateLimitSizes: { connections: 1, events: 2, health: 3, adminMetricsAuth: 4, authFailures: 5, roomList: 6, leaveRoom: 7 }
 });
 
 assert.deepEqual(
@@ -68,7 +68,8 @@ const adminHealth = buildHealthPayload({
   now: 1234,
   uptime: 99,
   memoryUsage: () => ({ rss: 10, heapUsed: 5, heapTotal: 8 }),
-  rateLimitSizes: { connections: 1, events: 2, health: 3, adminMetricsAuth: 4, authFailures: 5, roomList: 6 }
+  rateLimitSizes: { connections: 1, events: 2, health: 3, adminMetricsAuth: 4, authFailures: 5, roomList: 6, leaveRoom: 7 },
+  rateLimitDenied: { leaveRoom: 8 }
 });
 
 assert.equal(adminHealth.peers, 5, 'admin metrics should include aggregate peer count');
@@ -79,8 +80,8 @@ assert.deepEqual(adminHealth.memory, { rss: 10, heapUsed: 5, heapTotal: 8 }, 'ad
 assert.deepEqual(
   adminHealth.rateLimits,
   {
-    trackedClients: { connections: 1, events: 2, health: 3, adminMetricsAuth: 4, authFailures: 5, roomList: 6 },
-    denied: { connections: 0, events: 0, health: 0, adminMetricsAuth: 0, roomList: 0 }
+    trackedClients: { connections: 1, events: 2, health: 3, adminMetricsAuth: 4, authFailures: 5, roomList: 6, leaveRoom: 7 },
+    denied: { connections: 0, events: 0, health: 0, adminMetricsAuth: 0, roomList: 0, leaveRoom: 8 }
   },
   'admin metrics should expose rate-limit tracking and denial counts'
 );
diff --git a/scripts/verify-release.mjs b/scripts/verify-release.mjs
index ea7b45e..b8545c2 100644
--- a/scripts/verify-release.mjs
+++ b/scripts/verify-release.mjs
@@ -7,6 +7,7 @@ import path from 'node:path';
 const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
 
 const checks = [
+  ['vitest unit tests', 'npm', ['run', 'test:unit']],
   ['server ops', 'node', ['scripts/test-server-ops.mjs']],
   ['server routes', 'node', ['scripts/test-server-routes.mjs'], {
     env: { ADMIN_METRICS_TOKEN: 'verify-admin-token-with-more-than-32-chars' }
diff --git a/server/index.js b/server/index.js
index 6f822ff..175369c 100644
--- a/server/index.js
+++ b/server/index.js
@@ -22,6 +22,7 @@ import {
     healthCounts,
     adminMetricsAuthCounts,
     roomListCooldowns,
+    leaveRoomCounts,
     rateLimitDenied,
     checkAuthRate,
     recordAuthFailure,
@@ -115,7 +116,8 @@ app.get('/health', (req, res) => {
                 health: healthCounts.size,
                 adminMetricsAuth: adminMetricsAuthCounts.size,
                 authFailures: failedAuthAttempts.size,
-                roomList: roomListCooldowns.size
+                roomList: roomListCooldowns.size,
+                leaveRoom: leaveRoomCounts.size
             },
             rateLimitDenied
         })
@@ -664,6 +666,7 @@ io.on('connection', (socket) => {
     socket.on(EVENTS.LEAVE_ROOM, () => {
         if (!checkLeaveRoomRate(socket.id)) {
             log('SECURITY', `LEAVE_ROOM rate limit exceeded for socket: ${socket.id}`);
+            socket.disconnect(true);
             return;
         }
         try {
@@ -844,6 +847,7 @@ io.on('connection', (socket) => {
     socket.on('disconnect', () => {
         eventCounts.delete(socket.id);
         roomListCooldowns.delete(socket.id);
+        leaveRoomCounts.delete(socket.id);
         const mapping = socketToRoom.get(socket.id);
         if (mapping) {
             try {
diff --git a/server/ops.js b/server/ops.js
index de79c6e..7ac9c22 100644
--- a/server/ops.js
+++ b/server/ops.js
@@ -97,14 +97,16 @@ export function buildHealthPayload({
                 health: rateLimitSizes.health || 0,
                 adminMetricsAuth: rateLimitSizes.adminMetricsAuth || 0,
                 authFailures: rateLimitSizes.authFailures || 0,
-                roomList: rateLimitSizes.roomList || 0
+                roomList: rateLimitSizes.roomList || 0,
+                leaveRoom: rateLimitSizes.leaveRoom || 0
             },
             denied: {
                 connections: rateLimitDenied.connections || 0,
                 events: rateLimitDenied.events || 0,
                 health: rateLimitDenied.health || 0,
                 adminMetricsAuth: rateLimitDenied.adminMetricsAuth || 0,
-                roomList: rateLimitDenied.roomList || 0
+                roomList: rateLimitDenied.roomList || 0,
+                leaveRoom: rateLimitDenied.leaveRoom || 0
             }
         },
         memory: {
diff --git a/server/rate-limiter.js b/server/rate-limiter.js
index b1959f1..aec4171 100644
--- a/server/rate-limiter.js
+++ b/server/rate-limiter.js
@@ -164,7 +164,7 @@ export function startRateLimitCleanup(io) {
             }
         }
         for (const [socketId, entry] of leaveRoomCounts.entries()) {
-            if (now > entry.resetTime) {
+            if (now > entry.resetTime || !io.sockets.sockets.has(socketId)) {
                 leaveRoomCounts.delete(socketId);
             }
         }
diff --git a/server/rate-limiter.test.mjs b/server/rate-limiter.test.mjs
index 5109bbf..9a3bb2c 100644
--- a/server/rate-limiter.test.mjs
+++ b/server/rate-limiter.test.mjs
@@ -4,21 +4,20 @@ import {
     LEAVE_ROOM_RATE_LIMIT,
     LEAVE_ROOM_RATE_WINDOW_MS,
     rateLimitDenied,
-    leaveRoomCounts
+    leaveRoomCounts,
+    clearRateLimitMaps
 } from './rate-limiter.js';
 
 describe('LEAVE_ROOM Rate Limiter', () => {
     const testSocketId = 'test-socket-123';
 
     beforeEach(() => {
-        // Reset state before each test
-        leaveRoomCounts.clear();
+        clearRateLimitMaps();
         rateLimitDenied.leaveRoom = 0;
     });
 
     afterEach(() => {
-        // Clean up after each test
-        leaveRoomCounts.clear();
+        clearRateLimitMaps();
     });
 
     it('should allow LEAVE_ROOM within limit', () => {
@@ -80,19 +79,24 @@ describe('LEAVE_ROOM Rate Limiter', () => {
     });
 
     it('should increment rateLimitDenied counter on block', () => {
-        // Fill up to the limit
         for (let i = 0; i < LEAVE_ROOM_RATE_LIMIT; i++) {
             checkLeaveRoomRate(testSocketId);
         }
 
-        // First block
         checkLeaveRoomRate(testSocketId);
         expect(rateLimitDenied.leaveRoom).toBe(1);
 
-        // Second block
         checkLeaveRoomRate(testSocketId);
         expect(rateLimitDenied.leaveRoom).toBe(2);
     });
+
+    it('should be cleared by the shared reset helper', () => {
+        checkLeaveRoomRate(testSocketId);
+        expect(leaveRoomCounts.size).toBe(1);
+
+        clearRateLimitMaps();
+        expect(leaveRoomCounts.size).toBe(0);
+    });
 });
 
 describe('Rate Limit Constants', () => {

From 8a21fbe07fa5a8bdfd00e7eeb434af0e33922d85 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 09:43:11 +0200
Subject: [PATCH 093/151] Fix Netflix seek handling

---
 extension/background.js | 86 +++++++++++++++++++++++++++++++++++++----
 extension/content.js    | 28 ++++++++++----
 extension/popup.js      | 17 ++++----
 3 files changed, 106 insertions(+), 25 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 2b5f601..dac9678 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1592,6 +1592,68 @@ async function routeToContent(action, payload) {
     _routeToContentInternal(tabId, action, payload, actionTimestamp, commandSenderId, 0);
 }
 
+function isNetflixUrl(url) {
+    try {
+        const host = new URL(url).hostname.toLowerCase();
+        return host === 'netflix.com' || host.endsWith('.netflix.com');
+    } catch (_e) {
+        return false;
+    }
+}
+
+function installNetflixSeekBridge() {
+    if (window.__koalaNetflixSeekBridgeInstalled) return;
+    window.__koalaNetflixSeekBridgeInstalled = true;
+
+    function getNetflixPlayer() {
+        try {
+            const videoPlayer = window.netflix?.appContext?.state?.playerApp?.getAPI?.().videoPlayer;
+            const sessionId = videoPlayer?.getAllPlayerSessionIds?.()[0];
+            return sessionId ? videoPlayer.getVideoPlayerBySessionId(sessionId) : null;
+        } catch (_e) {
+            return null;
+        }
+    }
+
+    window.addEventListener('message', (event) => {
+        if (event.source !== window) return;
+        const data = event.data;
+        if (!data || data.__koalaNetflixSeek !== 1 || data.kind !== 'seek' || typeof data.time !== 'number') return;
+        try {
+            getNetflixPlayer()?.seek(Math.round(data.time * 1000));
+        } catch (_e) {
+            // Netflix player not ready or private API changed; the next sync tick can retry.
+        }
+    });
+}
+
+async function injectContentScript(tabId) {
+    let isNetflix = false;
+    try {
+        const tab = await chrome.tabs.get(tabId);
+        isNetflix = isNetflixUrl(tab?.url || '');
+    } catch (_e) {
+        // Fall through to the generic content script injection.
+    }
+
+    if (isNetflix) {
+        try {
+            await chrome.scripting.executeScript({
+                target: { tabId },
+                world: 'MAIN',
+                func: installNetflixSeekBridge
+            });
+        } catch (err) {
+            addLog(`Netflix seek bridge injection failed: ${err.message}`, 'warn');
+        }
+    }
+
+    return chrome.scripting.executeScript({
+        target: { tabId },
+        files: ['content.js']
+    });
+}
+
 function _routeToContentInternal(tabId, action, payload, actionTimestamp, commandSenderId, retries) {
     chrome.tabs.sendMessage(tabId, { 
         type: 'SERVER_COMMAND',
@@ -1606,10 +1668,7 @@ function _routeToContentInternal(tabId, action, payload, actionTimestamp, comman
             return;
         }
         if (err.message.includes('Receiving end does not exist') || err.message.includes('Extension context invalidated')) {
-            chrome.scripting.executeScript({
-                target: { tabId },
-                files: ['content.js']
-            }).then(() => {
+            injectContentScript(tabId).then(() => {
                 setTimeout(() => _routeToContentInternal(tabId, action, payload, actionTimestamp, commandSenderId, retries + 1), 500);
             }).catch(_err => {
                 addLog(`Auto-reinject failed for tab ${tabId}`, 'warn');
@@ -2196,6 +2255,20 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             addLog('Heartbeat settings error: ' + err.message, 'error');
             sendResponse({ status: 'ok' });
         });
+    } else if (message.type === 'INJECT_CONTENT_SCRIPT') {
+        const tabId = Number(message.tabId);
+        if (!Number.isInteger(tabId)) {
+            sendResponse({ status: 'invalid_tab' });
+            return true;
+        }
+
+        injectContentScript(tabId).then(() => {
+            sendResponse({ status: 'ok' });
+        }).catch(err => {
+            addLog(`Failed to inject into tab: ${err.message}`, 'warn');
+            sendResponse({ status: 'error', message: err.message });
+        });
+        return true;
     } else if (message.type === 'SET_TARGET_TAB') {
         const previousTabId = currentTabId;
         currentTabId = message.tabId;
@@ -2213,10 +2286,7 @@ async function handleAsyncMessage(message, sender, sendResponse) {
         
         if (currentTabId) {
             const selectedTabId = currentTabId;
-            chrome.scripting.executeScript({
-                target: { tabId: selectedTabId },
-                files: ['content.js']
-            })
+            injectContentScript(selectedTabId)
                 .then(() => applyAudioSettingsToTab(selectedTabId))
                 .catch(err => {
                     addLog(`Failed to inject into tab: ${err.message}`, 'warn');
diff --git a/extension/content.js b/extension/content.js
index a7ade14..01a491e 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -57,6 +57,22 @@
     let seekDebounceTimer = null;     // debounce timer for rapid seek events
     let expectedSeekTime = null;      // strictly track programmatic seeks
 
+    const NETFLIX_SEEK_BRIDGE = 1;
+
+    function isNetflixHost() {
+        const host = window.location.hostname.toLowerCase();
+        return host === 'netflix.com' || host.endsWith('.netflix.com');
+    }
+
+    function seekVideo(video, targetTime) {
+        expectedSeekTime = targetTime;
+        if (isNetflixHost()) {
+            window.postMessage({ __koalaNetflixSeek: NETFLIX_SEEK_BRIDGE, kind: 'seek', time: targetTime }, '*');
+            return;
+        }
+        video.currentTime = targetTime;
+    }
+
     // --- Play/Pause Coalescing (leading + trailing) ---
     // Media players (HLS/DASH, ad insertion, ABR/quality switches, source swaps,
     // page teardown) fire bursts of native play/pause events within a few hundred
@@ -748,8 +764,7 @@
                         ytButton.click();
                     }
                     if (action === EVENTS.SEEK) {
-                        expectedSeekTime = data.targetTime;
-                        video.currentTime = data.targetTime;
+                        seekVideo(video, data.targetTime);
                     }
                     return;
                 }
@@ -764,8 +779,7 @@
                         twitchButton.click();
                     }
                     if (action === EVENTS.SEEK) {
-                        expectedSeekTime = data.targetTime;
-                        video.currentTime = data.targetTime;
+                        seekVideo(video, data.targetTime);
                     }
                     return;
                 }
@@ -782,8 +796,7 @@
                 _setSuppress('paused');
                 video.pause();
             } else if (action === EVENTS.SEEK) {
-                expectedSeekTime = data.targetTime;
-                video.currentTime = data.targetTime;
+                seekVideo(video, data.targetTime);
             }
     } catch (e) {
             reportLog(`Media Action Error: ${e.message}`, 'error');
@@ -931,10 +944,9 @@
                         return;
                     }
                     _setSuppress('paused');
-                    expectedSeekTime = payload.targetTime;
                     video.pause();
                     try {
-                        video.currentTime = payload.targetTime;
+                        seekVideo(video, payload.targetTime);
                     } catch (e) {
                         reportLog(`Force Sync Seek Error: ${e.message}`, 'error');
                     }
diff --git a/extension/popup.js b/extension/popup.js
index a9e2952..7ecead6 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -1609,10 +1609,14 @@ elements.forceSyncBtn.addEventListener('click', async () => {
     if (mode === 'jump-to-me') {
         chrome.tabs.sendMessage(tabId, { action: 'get_current_time' }, (response) => {
             if (chrome.runtime.lastError || !response || response.currentTime === undefined) {
-                chrome.scripting.executeScript({
-                    target: { tabId },
-                    files: ['content.js']
-                }).then(() => {
+                chrome.runtime.sendMessage({ type: 'INJECT_CONTENT_SCRIPT', tabId }, (injectResponse) => {
+                    if (chrome.runtime.lastError || !injectResponse || injectResponse.status !== 'ok') {
+                        showError(getMessage('ERR_NO_VIDEO_TAB'));
+                        forceSyncDone = true;
+                        elements.forceSyncBtn.disabled = false;
+                        elements.forceSyncBtn.textContent = originalText;
+                        return;
+                    }
                     setTimeout(() => {
                         chrome.tabs.sendMessage(tabId, { action: 'get_current_time' }, (retryResponse) => {
                             if (chrome.runtime.lastError) return;
@@ -1621,11 +1625,6 @@ elements.forceSyncBtn.addEventListener('click', async () => {
                             }
                         });
                     }, 500);
-                }).catch(() => {
-                    showError(getMessage('ERR_NO_VIDEO_TAB'));
-                    forceSyncDone = true;
-                    elements.forceSyncBtn.disabled = false;
-                    elements.forceSyncBtn.textContent = originalText;
                 });
                 return;
             }

From 57cd071d58cce500daaae15eb738a3684b0fb50b Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 09:50:39 +0200
Subject: [PATCH 094/151] Add hidden remote seek test controls

---
 extension/background.js | 66 +++++++++++++++++++++++++++++++++++++++++
 extension/popup.html    |  9 ++++++
 extension/popup.js      | 43 +++++++++++++++++++++++++--
 3 files changed, 115 insertions(+), 3 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index dac9678..d46b479 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1592,6 +1592,62 @@ async function routeToContent(action, payload) {
     _routeToContentInternal(tabId, action, payload, actionTimestamp, commandSenderId, 0);
 }
 
+function getTabVideoState(tabId) {
+    return new Promise((resolve) => {
+        chrome.tabs.sendMessage(tabId, { type: 'GET_VIDEO_STATE' }, (res) => {
+            if (chrome.runtime.lastError) {
+                resolve({ error: chrome.runtime.lastError.message });
+                return;
+            }
+            resolve(res);
+        });
+    });
+}
+
+async function getReadyTabVideoState(tabId) {
+    let state = await getTabVideoState(tabId);
+    if (!state || state.error) {
+        await injectContentScript(tabId);
+        await new Promise(resolve => setTimeout(resolve, 250));
+        state = await getTabVideoState(tabId);
+    }
+    return state;
+}
+
+async function simulateRemoteSeek(delta) {
+    if (!currentTabId) return { status: 'no_tab' };
+    const tabId = parseInt(currentTabId);
+    if (isNaN(tabId)) return { status: 'no_tab' };
+
+    const state = await getReadyTabVideoState(tabId);
+    if (!state || state.error) return { status: 'error', message: state?.error || 'No video state' };
+    if (!state.found || !Number.isFinite(state.currentTime)) return { status: 'no_video' };
+
+    let targetTime = Math.max(0, state.currentTime + delta);
+    if (Number.isFinite(state.duration) && state.duration > 0) {
+        targetTime = Math.min(targetTime, Math.max(0, state.duration - 0.1));
+    }
+
+    const senderId = 'KoalaDev';
+    const timestamp = Date.now();
+    const payload = {
+        senderId,
+        actionTimestamp: timestamp,
+        currentTime: targetTime,
+        targetTime
+    };
+
+    addToHistory(EVENTS.SEEK, senderId);
+    showNotification(senderId, EVENTS.SEEK);
+    updateLastAction(EVENTS.SEEK, senderId, timestamp);
+    lastActionState.targetTime = targetTime;
+    if (storageInitialized) chrome.storage.session.set({ lastActionState });
+    updateLocalPeerState(senderId, { currentTime: targetTime });
+    routeToContent(EVENTS.SEEK, payload);
+
+    return { status: 'ok', targetTime };
+}
+
 function isNetflixUrl(url) {
     try {
         const host = new URL(url).hostname.toLowerCase();
@@ -2056,6 +2112,16 @@ async function handleAsyncMessage(message, sender, sendResponse) {
                 sendResponse(res);
             }
         });
+    } else if (message.type === 'DEV_SIMULATE_REMOTE_SEEK') {
+        const delta = Number(message.delta);
+        if (!Number.isFinite(delta)) {
+            sendResponse({ status: 'invalid_delta' });
+            return;
+        }
+        simulateRemoteSeek(delta).then(sendResponse).catch(err => {
+            addLog(`Remote seek simulation failed: ${err.message}`, 'warn');
+            sendResponse({ status: 'error', message: err.message });
+        });
     } else if (message.type === 'CONTENT_EVENT') {
         const processEvent = async () => {
             // Host Control Mode (sender-side): a non-controller in host-only mode must
diff --git a/extension/popup.html b/extension/popup.html
index 23a2080..5df9ef9 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -391,6 +391,7 @@
         <button class="tab-btn" data-tab="tab-sync" data-i18n="TAB_SYNC" data-i18n-title="TAB_SYNC_TOOLTIP" title="Video sync controls and remote actions">Sync</button>
         <button class="tab-btn" data-tab="tab-settings" data-i18n="TAB_SETTINGS" data-i18n-title="TAB_SETTINGS_TOOLTIP" title="Extension preferences">Settings</button>
         <button class="tab-btn" data-tab="tab-dev" data-i18n="TAB_STATUS" data-i18n-title="TAB_STATUS_TOOLTIP" title="Advanced Diagnostics & Logs">Status</button>
+        <button id="devToolsTabBtn" class="tab-btn" data-tab="tab-devtools" style="display:none;">Dev</button>
     </div>
 
     <!-- Room Tab -->
@@ -692,6 +693,14 @@
         </div>
     </div>
 
+    <div id="tab-devtools" class="tab-content">
+        <label>Remote Seek</label>
+        <div class="info-card" style="display:flex; gap:8px; margin-bottom:15px;">
+            <button id="remoteSeekBack" class="secondary" style="flex:1; font-size:12px;">-30s</button>
+            <button id="remoteSeekForward" class="secondary" style="flex:1; font-size:12px;">+30s</button>
+        </div>
+    </div>
+
     <script src="popup.js" type="module"></script>
 
     <!-- Onboarding Overlay -->
diff --git a/extension/popup.js b/extension/popup.js
index 7ecead6..7ea0322 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -71,7 +71,10 @@ const elements = {
     settingsVersion: document.getElementById('settingsVersion'),
     devSupportLink: document.getElementById('devSupportLink'),
     devReviewLink: document.getElementById('devReviewLink'),
-    syncTabCopyInvite: document.getElementById('syncTabCopyInvite')
+    syncTabCopyInvite: document.getElementById('syncTabCopyInvite'),
+    devToolsTabBtn: document.getElementById('devToolsTabBtn'),
+    remoteSeekBack: document.getElementById('remoteSeekBack'),
+    remoteSeekForward: document.getElementById('remoteSeekForward')
 };
 
 let localPeerId = null;
@@ -88,6 +91,19 @@ let errorToken = 0;
 let forceSyncDone = false;
 let connectionErrorTimer = null;
 let pendingConnectionErrorMsg = null;
+
+function devToolsEnabled() {
+    return elements.username && elements.username.value.trim() === 'KoalaDev';
+}
+
+function syncDevToolsVisibility() {
+    if (!elements.devToolsTabBtn) return;
+    const enabled = devToolsEnabled();
+    elements.devToolsTabBtn.style.display = enabled ? '' : 'none';
+    if (!enabled && document.getElementById('tab-devtools')?.classList.contains('active')) {
+        document.querySelector('.tab-btn[data-tab="tab-settings"]')?.click();
+    }
+}
 let roomListRefreshTimer = null;
 let roomListRefreshInterval = null;
 const ROOM_LIST_REFRESH_COOLDOWN_MS = 11000;
@@ -210,6 +226,7 @@ async function init() {
     elements.roomId.value = localData.roomId || '';
     elements.password.value = localData.password || '';
     elements.username.value = username;
+    syncDevToolsVisibility();
     if (elements.filterNoise) elements.filterNoise.checked = localData.filterNoise !== false;
     if (elements.autoSyncNextEpisode) elements.autoSyncNextEpisode.checked = localData.autoSyncNextEpisode !== false;
     const legacyTitlePrivacyMode = Object.values(TITLE_PRIVACY_MODES).includes(localData.titlePrivacyMode) ? localData.titlePrivacyMode : TITLE_PRIVACY_MODES.FULL;
@@ -277,13 +294,13 @@ async function init() {
                 const syncTabBtn = document.querySelector('.tab-btn[data-tab="tab-sync"]');
                 if (syncTabBtn) syncTabBtn.click();
                 showSelectVideoHint();
-            } else if (localData.activeTab) {
+            } else if (localData.activeTab && (localData.activeTab !== 'tab-devtools' || devToolsEnabled())) {
                 const btn = document.querySelector(`.tab-btn[data-tab="${localData.activeTab}"]`);
                 if (btn) btn.click();
             }
         } else {
             await populateTabs();
-            if (localData.activeTab) {
+            if (localData.activeTab && (localData.activeTab !== 'tab-devtools' || devToolsEnabled())) {
                 const btn = document.querySelector(`.tab-btn[data-tab="${localData.activeTab}"]`);
                 if (btn) btn.click();
             }
@@ -1275,8 +1292,10 @@ elements.serverUrl.addEventListener('input', () => {
     chrome.storage.local.set({ serverUrl: elements.serverUrl.value });
 });
 
+elements.username.addEventListener('input', syncDevToolsVisibility);
 elements.username.addEventListener('change', () => {
     chrome.storage.local.set({ username: elements.username.value });
+    syncDevToolsVisibility();
 });
 
 if (elements.langSelector) {
@@ -1689,6 +1708,24 @@ elements.pauseBtn.addEventListener('click', () => {
     }, 2500);
 });
 
+function simulateRemoteSeek(delta) {
+    chrome.runtime.sendMessage({ type: 'DEV_SIMULATE_REMOTE_SEEK', delta }, (res) => {
+        if (chrome.runtime.lastError || !res || res.status !== 'ok') {
+            showToast(res?.message || 'Remote seek failed', 'error');
+            return;
+        }
+        showToast(`Remote seek -> ${formatTime(res.targetTime)}`, 'success', 1200);
+        refreshDebugInfo();
+    });
+}
+
+if (elements.remoteSeekBack) {
+    elements.remoteSeekBack.addEventListener('click', () => simulateRemoteSeek(-30));
+}
+if (elements.remoteSeekForward) {
+    elements.remoteSeekForward.addEventListener('click', () => simulateRemoteSeek(30));
+}
+
 elements.clearLogs.addEventListener('click', () => {
     chrome.runtime.sendMessage({ type: 'CLEAR_LOGS' }, () => {
         elements.logList.innerHTML = '';

From 52265e84eb9d1f55513f6d64d57ba6c67ff902f7 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 09:57:57 +0200
Subject: [PATCH 095/151] Generalize page API seek overrides

---
 extension/background.js              | 82 +++++++++++++++++++---------
 extension/content.js                 | 13 +++--
 extension/page-api-seek-overrides.js | 23 ++++++++
 3 files changed, 86 insertions(+), 32 deletions(-)
 create mode 100644 extension/page-api-seek-overrides.js

diff --git a/extension/background.js b/extension/background.js
index d46b479..b346e71 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -4,6 +4,7 @@ import { loadLocale, getMessage, getSystemLanguage } from './i18n.js';
 import { sameEpisode } from './episode-utils.js';
 import { applyTitlePrivacyToPayload, sanitizeSharedTitle, sanitizeTabTitle, normalizeSendTabTitle, normalizeTitlePrivacyMode } from './title-privacy.js';
 import { initTabManager } from './modules/tab-manager.js';
+import './page-api-seek-overrides.js';
 
 // --- Uninstall URL Initialization ---
 let uninstallURLInitPromise = null;
@@ -1648,62 +1649,87 @@ async function simulateRemoteSeek(delta) {
     return { status: 'ok', targetTime };
 }
 
-function isNetflixUrl(url) {
-    try {
-        const host = new URL(url).hostname.toLowerCase();
-        return host === 'netflix.com' || host.endsWith('.netflix.com');
-    } catch (_e) {
-        return false;
-    }
+async function devRemoteToolsAllowed() {
+    const data = await chrome.storage.local.get(['username']);
+    return data.username === 'KoalaDev';
 }
 
-function installNetflixSeekBridge() {
-    if (window.__koalaNetflixSeekBridgeInstalled) return;
-    window.__koalaNetflixSeekBridgeInstalled = true;
+function shouldUsePageApiSeek(url) {
+    return typeof globalThis.koalaFindPageApiSeekProvider === 'function' &&
+        !!globalThis.koalaFindPageApiSeekProvider(url);
+}
+
+function installPageApiSeekBridge() {
+    if (window.__koalaPageApiSeekBridgeInstalled) return;
+    window.__koalaPageApiSeekBridgeInstalled = true;
+
+    function seekWithPageApi(time) {
+        const match = typeof window.koalaFindPageApiSeekProvider === 'function'
+            ? window.koalaFindPageApiSeekProvider(window.location.hostname)
+            : null;
+        if (!match) return;
 
-    function getNetflixPlayer() {
         try {
-            const videoPlayer = window.netflix?.appContext?.state?.playerApp?.getAPI?.().videoPlayer;
-            const sessionId = videoPlayer?.getAllPlayerSessionIds?.()[0];
-            return sessionId ? videoPlayer.getVideoPlayerBySessionId(sessionId) : null;
+            if (match.provider === 'netflix') {
+                const videoPlayer = window.netflix?.appContext?.state?.playerApp?.getAPI?.().videoPlayer;
+                const sessionId = videoPlayer?.getAllPlayerSessionIds?.()[0];
+                const player = sessionId ? videoPlayer.getVideoPlayerBySessionId(sessionId) : null;
+                player?.seek(Math.round(time * 1000));
+            }
         } catch (_e) {
-            return null;
+            // Player not ready or private API changed; the next sync tick can retry.
         }
     }
 
     window.addEventListener('message', (event) => {
         if (event.source !== window) return;
         const data = event.data;
-        if (!data || data.__koalaNetflixSeek !== 1 || data.kind !== 'seek' || typeof data.time !== 'number') return;
-        try {
-            getNetflixPlayer()?.seek(Math.round(data.time * 1000));
-        } catch (_e) {
-            // Netflix player not ready or private API changed; the next sync tick can retry.
-        }
+        if (!data || data.__koalaPageApiSeek !== 1 || data.kind !== 'seek' || typeof data.time !== 'number') return;
+        seekWithPageApi(data.time);
     });
 }
 
+function setPageApiSeekEnabled(enabled) {
+    window.KOALA_PAGE_API_SEEK_ENABLED = enabled === true;
+}
+
 async function injectContentScript(tabId) {
-    let isNetflix = false;
+    let needsPageApiSeek = false;
+    let pageApiSeekReady = false;
     try {
         const tab = await chrome.tabs.get(tabId);
-        isNetflix = isNetflixUrl(tab?.url || '');
+        needsPageApiSeek = shouldUsePageApiSeek(tab?.url || '');
     } catch (_e) {
         // Fall through to the generic content script injection.
     }
 
-    if (isNetflix) {
+    if (needsPageApiSeek) {
         try {
             await chrome.scripting.executeScript({
                 target: { tabId },
                 world: 'MAIN',
-                func: installNetflixSeekBridge
+                files: ['page-api-seek-overrides.js']
             });
+            await chrome.scripting.executeScript({
+                target: { tabId },
+                world: 'MAIN',
+                func: installPageApiSeekBridge
+            });
+            pageApiSeekReady = true;
         } catch (err) {
-            addLog(`Netflix seek bridge injection failed: ${err.message}`, 'warn');
+            addLog(`Page API seek bridge injection failed: ${err.message}`, 'warn');
         }
     }
 
+    await chrome.scripting.executeScript({
+        target: { tabId },
+        files: ['page-api-seek-overrides.js']
+    });
+    await chrome.scripting.executeScript({
+        target: { tabId },
+        func: setPageApiSeekEnabled,
+        args: [pageApiSeekReady]
+    });
     return chrome.scripting.executeScript({
         target: { tabId },
         files: ['content.js']
@@ -2113,6 +2139,10 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             }
         });
     } else if (message.type === 'DEV_SIMULATE_REMOTE_SEEK') {
+        if (!(await devRemoteToolsAllowed())) {
+            sendResponse({ status: 'forbidden' });
+            return;
+        }
         const delta = Number(message.delta);
         if (!Number.isFinite(delta)) {
             sendResponse({ status: 'invalid_delta' });
diff --git a/extension/content.js b/extension/content.js
index 01a491e..ef59983 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -57,17 +57,18 @@
     let seekDebounceTimer = null;     // debounce timer for rapid seek events
     let expectedSeekTime = null;      // strictly track programmatic seeks
 
-    const NETFLIX_SEEK_BRIDGE = 1;
+    const PAGE_API_SEEK_BRIDGE = 1;
 
-    function isNetflixHost() {
-        const host = window.location.hostname.toLowerCase();
-        return host === 'netflix.com' || host.endsWith('.netflix.com');
+    function shouldUsePageApiSeek() {
+        return window.KOALA_PAGE_API_SEEK_ENABLED === true &&
+            typeof window.koalaFindPageApiSeekProvider === 'function' &&
+            !!window.koalaFindPageApiSeekProvider(window.location.hostname);
     }
 
     function seekVideo(video, targetTime) {
         expectedSeekTime = targetTime;
-        if (isNetflixHost()) {
-            window.postMessage({ __koalaNetflixSeek: NETFLIX_SEEK_BRIDGE, kind: 'seek', time: targetTime }, '*');
+        if (shouldUsePageApiSeek()) {
+            window.postMessage({ __koalaPageApiSeek: PAGE_API_SEEK_BRIDGE, kind: 'seek', time: targetTime }, '*');
             return;
         }
         video.currentTime = targetTime;
diff --git a/extension/page-api-seek-overrides.js b/extension/page-api-seek-overrides.js
new file mode 100644
index 0000000..58532ed
--- /dev/null
+++ b/extension/page-api-seek-overrides.js
@@ -0,0 +1,23 @@
+(function(root) {
+    const PAGE_API_SEEK_PROVIDERS = [
+        { domain: 'netflix.com', provider: 'netflix' } // Avoids M7375 when seeking via video.currentTime.
+    ];
+
+    function normalizeHost(input) {
+        try {
+            return new URL(input).hostname.toLowerCase();
+        } catch (_e) {
+            return String(input || '').toLowerCase();
+        }
+    }
+
+    function matchesDomain(host, domain) {
+        return host === domain || host.endsWith(`.${domain}`);
+    }
+
+    root.KOALA_PAGE_API_SEEK_PROVIDERS = PAGE_API_SEEK_PROVIDERS;
+    root.koalaFindPageApiSeekProvider = (input) => {
+        const host = normalizeHost(input);
+        return PAGE_API_SEEK_PROVIDERS.find(entry => matchesDomain(host, entry.domain)) || null;
+    };
+})(globalThis);

From 0af22998c8890e6d36028255d752f6a14e108d27 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 10:02:31 +0200
Subject: [PATCH 096/151] Handle target tab navigation reinjection

---
 extension/background.js          | 1 +
 extension/modules/tab-manager.js | 6 ++----
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index b346e71..0c22ffa 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -2565,6 +2565,7 @@ initTabManager({
     getSettings,
     emit,
     applyAudioSettingsToTab,
+    injectContentScript,
     ensureState,
     EVENTS
 });
diff --git a/extension/modules/tab-manager.js b/extension/modules/tab-manager.js
index 063a7be..8fcbc22 100644
--- a/extension/modules/tab-manager.js
+++ b/extension/modules/tab-manager.js
@@ -12,6 +12,7 @@ export function initTabManager({
     getSettings,
     emit,
     applyAudioSettingsToTab,
+    injectContentScript,
     ensureState,
     EVENTS
 }) {
@@ -83,10 +84,7 @@ export function initTabManager({
         await ensureState();
         const curTabId = getCurrentTabId();
         if (curTabId && tabId === parseInt(curTabId) && changeInfo.status === 'complete') {
-            chrome.scripting.executeScript({
-                target: { tabId },
-                files: ['content.js']
-            })
+            injectContentScript(tabId)
                 .then(() => applyAudioSettingsToTab(tabId))
                 .catch(() => {});
         }

From 01762b0c2fff1f2702930cc548871751417cdfc8 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 10:20:25 +0200
Subject: [PATCH 097/151] Normalize shared tab titles

---
 docs/ROADMAP.md                | 17 ++++++++++++++++-
 extension/popup.js             |  4 ++--
 extension/title-privacy.js     |  8 +++++++-
 scripts/test-title-privacy.mjs |  6 ++++++
 4 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index d667bcf..d55cba6 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -60,6 +60,22 @@
   - **Legal/moderation:** Unclear what moderation requirements would apply if users can exchange chat messages. Could be relevant depending on jurisdiction.
 - **Status:** Under evaluation, may come later.
 
+### Cross-frame video detection and control
+
+- **Priority:** P3
+- **Category:** Compatibility / Embedded Players
+- **Background:** KoalaSync currently injects on demand into the selected tab's top frame. This works for normal top-frame players, including current Emby/Jellyfin usage, but does not cover cases where the real `<video>` lives inside a cross-origin iframe or an `about:blank`/`srcdoc` player frame.
+- **Possible approach:** Add an opt-in frame bridge where child frames announce detected videos to the top frame, and the top frame routes remote play/pause/seek commands to the active child video.
+- **Status:** Future compatibility work, not needed for current Emby behavior.
+
+### Local extension E2E smoke tests
+
+- **Priority:** P2
+- **Category:** Testing / Release Confidence
+- **Background:** The release verification covers unit tests, server integration, syntax, lint, audits, and builds, but it does not currently run a real browser extension flow. A small local E2E smoke suite would catch regressions in content-script injection, tab navigation reinjection, remote seek handling, and iframe player support.
+- **Possible approach:** Add a separate local-only Playwright smoke command that loads the unpacked extension, opens two controlled video pages, and verifies play/pause/seek through the actual extension path. Keep it outside `npm run verify` until it is stable enough for CI.
+- **Status:** Backlog, recommended before larger content-script or frame-bridge changes.
+
 ---
 
 ## ❌ Rejected
@@ -70,4 +86,3 @@
 |---|---|
 | *(none yet)* | |
 
-
diff --git a/extension/popup.js b/extension/popup.js
index 7ea0322..294dcb6 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -2,7 +2,7 @@ import { EVENTS, OFFICIAL_LANDING_PAGE_URL, SUPPORT_URL, getReviewUrl } from './
 import { BLACKLIST_DOMAINS } from './shared/blacklist.js';
 import { getAvatarForName, generateUsername, USERNAME_ADJECTIVES, USERNAME_NOUNS } from './shared/names.js';
 import { loadLocale, translateDOM, getMessage, getSystemLanguage } from './i18n.js';
-import { TITLE_PRIVACY_MODES, normalizeSendTabTitle } from './title-privacy.js';
+import { TITLE_PRIVACY_MODES, normalizeSendTabTitle, normalizeTabTitle } from './title-privacy.js';
 
 
 const elements = {
@@ -920,7 +920,7 @@ async function populateTabs(providedPeers = null, providedTargetTabId = null) {
     // Smart Matching Logic — exclude own tabTitle to prevent self-match (computed once)
     const cleanTitle = (rawTitle) => {
         if (!rawTitle) return '';
-        return rawTitle
+        return (normalizeTabTitle(rawTitle) || '')
             .replace(/(?:\s*[-\|•]\s*(?:YouTube|Twitch|Jellyfin|Emby|Netflix|Vimeo|Dailymotion).*)$/i, '')
             .replace(/^(?:Netflix|Twitch|YouTube|Emby|Jellyfin)\s*[-\|•]\s*/i, '')
             .trim();
diff --git a/extension/title-privacy.js b/extension/title-privacy.js
index 54a4f99..8528524 100644
--- a/extension/title-privacy.js
+++ b/extension/title-privacy.js
@@ -17,9 +17,15 @@ export function normalizeSendTabTitle(sendTabTitle, legacyMode = TITLE_PRIVACY_M
     return normalizeTitlePrivacyMode(legacyMode) === TITLE_PRIVACY_MODES.FULL;
 }
 
+export function normalizeTabTitle(title) {
+    if (typeof title !== 'string') return null;
+    const normalized = title.replace(/^\s*(?:\(\d{1,2}\)|\[\d{1,2}\])\s+/, '').trim();
+    return normalized.length > 0 ? normalized : null;
+}
+
 export function sanitizeTabTitle(title, sendTabTitle) {
     if (!sendTabTitle) return null;
-    return typeof title === 'string' && title.length > 0 ? title : null;
+    return normalizeTabTitle(title);
 }
 
 export function sanitizeSharedTitle(title, mode) {
diff --git a/scripts/test-title-privacy.mjs b/scripts/test-title-privacy.mjs
index 77565bd..cba3f66 100644
--- a/scripts/test-title-privacy.mjs
+++ b/scripts/test-title-privacy.mjs
@@ -3,6 +3,7 @@ import {
     TITLE_PRIVACY_MODES,
     applyTitlePrivacyToPayload,
     normalizeSendTabTitle,
+    normalizeTabTitle,
     normalizeTitlePrivacyMode,
     sanitizeSharedTitle,
     sanitizeTabTitle
@@ -15,8 +16,13 @@ assert.equal(normalizeSendTabTitle(undefined, TITLE_PRIVACY_MODES.FULL), true);
 assert.equal(normalizeSendTabTitle(undefined, TITLE_PRIVACY_MODES.EPISODE), false);
 assert.equal(normalizeSendTabTitle(true, TITLE_PRIVACY_MODES.HIDDEN), true);
 assert.equal(normalizeSendTabTitle(false, TITLE_PRIVACY_MODES.FULL), false);
+assert.equal(normalizeTabTitle('(12) Testvideo - YouTube'), 'Testvideo - YouTube');
+assert.equal(normalizeTabTitle('[7] Testvideo - YouTube'), 'Testvideo - YouTube');
+assert.equal(normalizeTabTitle('(500) Days of Summer'), '(500) Days of Summer');
+assert.equal(normalizeTabTitle('   '), null);
 
 assert.equal(sanitizeTabTitle('Private Tab', true), 'Private Tab');
+assert.equal(sanitizeTabTitle('(12) Private Tab', true), 'Private Tab');
 assert.equal(sanitizeTabTitle('Private Tab', false), null);
 assert.equal(sanitizeTabTitle('', true), null);
 

From beda924b65377f29d2cea6a63c07695896644c7f Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 12:57:58 +0200
Subject: [PATCH 098/151] Fix DEV_SIMULATE_REMOTE_SEEK targetTime routing in
 background.js and add build identifier

---
 extension/background.js     | 14 ++++++++------
 extension/popup.html        |  4 ++++
 scripts/build-extension.cjs |  6 ++++++
 3 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 0c22ffa..5f95b5d 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1615,7 +1615,7 @@ async function getReadyTabVideoState(tabId) {
     return state;
 }
 
-async function simulateRemoteSeek(delta) {
+async function simulateRemoteSeek(delta, explicitTargetTime = null) {
     if (!currentTabId) return { status: 'no_tab' };
     const tabId = parseInt(currentTabId);
     if (isNaN(tabId)) return { status: 'no_tab' };
@@ -1624,7 +1624,7 @@ async function simulateRemoteSeek(delta) {
     if (!state || state.error) return { status: 'error', message: state?.error || 'No video state' };
     if (!state.found || !Number.isFinite(state.currentTime)) return { status: 'no_video' };
 
-    let targetTime = Math.max(0, state.currentTime + delta);
+    let targetTime = explicitTargetTime !== null ? explicitTargetTime : Math.max(0, state.currentTime + (delta || 0));
     if (Number.isFinite(state.duration) && state.duration > 0) {
         targetTime = Math.min(targetTime, Math.max(0, state.duration - 0.1));
     }
@@ -2143,12 +2143,14 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             sendResponse({ status: 'forbidden' });
             return;
         }
-        const delta = Number(message.delta);
-        if (!Number.isFinite(delta)) {
-            sendResponse({ status: 'invalid_delta' });
+        const delta = message.delta !== null && message.delta !== undefined ? Number(message.delta) : null;
+        const targetTime = message.targetTime !== null && message.targetTime !== undefined ? Number(message.targetTime) : null;
+
+        if (delta === null && targetTime === null) {
+            sendResponse({ status: 'invalid_params' });
             return;
         }
-        simulateRemoteSeek(delta).then(sendResponse).catch(err => {
+        simulateRemoteSeek(delta, targetTime).then(sendResponse).catch(err => {
             addLog(`Remote seek simulation failed: ${err.message}`, 'warn');
             sendResponse({ status: 'error', message: err.message });
         });
diff --git a/extension/popup.html b/extension/popup.html
index 5df9ef9..df2188c 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -699,6 +699,10 @@
             <button id="remoteSeekBack" class="secondary" style="flex:1; font-size:12px;">-30s</button>
             <button id="remoteSeekForward" class="secondary" style="flex:1; font-size:12px;">+30s</button>
         </div>
+        <button id="remoteSeekFiveMin" class="secondary" style="width:100%; font-size:12px; margin-bottom:15px;">Seek 5:00</button>
+        <div style="font-size:10px; color:var(--text-muted); text-align:center; margin-top:10px; opacity:0.7;">
+            Build: <span id="buildIdentifier">__BUILD_TIMESTAMP__</span>
+        </div>
     </div>
 
     <script src="popup.js" type="module"></script>
diff --git a/scripts/build-extension.cjs b/scripts/build-extension.cjs
index d7b8c2c..ec3568d 100644
--- a/scripts/build-extension.cjs
+++ b/scripts/build-extension.cjs
@@ -140,6 +140,12 @@ function copyExtensionFiles(targetDir, browserName) {
 
         fs.writeFileSync(destPath, content);
         console.log(`✓ Injected uninstall URL constants for ${browserName} into background.js`);
+      } else if (item === 'popup.html') {
+        let content = fs.readFileSync(srcPath, 'utf8');
+        const timestamp = new Date().toISOString().replace('T', ' ').substring(0, 19) + ' UTC';
+        content = content.replace(/__BUILD_TIMESTAMP__/g, timestamp);
+        fs.writeFileSync(destPath, content);
+        console.log(`✓ Injected build timestamp into popup.html: ${timestamp}`);
       } else {
         fs.copyFileSync(srcPath, destPath);
       }

From 9cbeb661d6f53092d6c343b1fb9f0dbd893abbf2 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 13:00:41 +0200
Subject: [PATCH 099/151] Save baseline state with Disney+ seek adjustments and
 build identifier

---
 extension/content.js                  | 3351 +++++++++++++------------
 extension/page-api-seek-overrides.js  |   18 +-
 extension/popup.js                    |   46 +-
 scripts/test-content-video-finder.cjs |  108 +-
 website/assets/NewLogoIcon_64.webp    |  Bin 1282 -> 1282 bytes
 5 files changed, 1974 insertions(+), 1549 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index ef59983..70d7315 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -1,1538 +1,1813 @@
-/**
- * KoalaSync Content Script
- * Injected into video tabs to control playback and detect events.
- */
-
-(function() {
-    // Injection Guard: Check if already injected AND context is valid
-    try {
-        if (window.koalaSyncInjected && chrome.runtime.id) {
-            return;
-        }
-    } catch (_e) {
-        // Context invalidated, proceed with re-injection
-    }
-    window.koalaSyncInjected = true;
-
-    // --- SHARED_EVENTS_INJECT_START ---
-    // This block is automatically updated by /scripts/build-extension.js
-    const EVENTS = {
-        PLAY: "play",
-        PAUSE: "pause",
-        SEEK: "seek",
-        FORCE_SYNC_PREPARE: "force_sync_prepare",
-        FORCE_SYNC_ACK: "force_sync_ack",
-        FORCE_SYNC_EXECUTE: "force_sync_execute",
-        PEER_STATUS: "peer_status",
-        EPISODE_LOBBY: "episode_lobby",
-        EPISODE_READY: "episode_ready"
-    };
-    // --- SHARED_EVENTS_INJECT_END ---
-
-    // Suppresses native event reporting after a programmatic action.
-    // Each entry is a per-type timer (key = 'playing'|'paused'|'seek').
-    // While a timer exists, matching native events are consumed and not relayed.
-    // Timers self-clean after 300ms if the native event never fires.
-    let _suppressTimers = {};
-
-    function _setSuppress(state) {
-        if (_suppressTimers[state]) clearTimeout(_suppressTimers[state]);
-        _suppressTimers[state] = setTimeout(() => {
-            delete _suppressTimers[state];
-        }, 300);
-    }
-
-    function _clearSuppress(state) {
-        if (_suppressTimers[state]) {
-            clearTimeout(_suppressTimers[state]);
-            delete _suppressTimers[state];
-        }
-    }
-
-    // --- Seek Relay Filtering ---
-    // Minimum seek delta (seconds) to report. Prevents HLS/DASH buffering micro-seeks
-    // from being relayed to peers as user-initiated seeks.
-    const MIN_SEEK_DELTA = 2.0;
-    let lastReportedSeekTime = null;  // last currentTime we relayed as a SEEK
-    let seekDebounceTimer = null;     // debounce timer for rapid seek events
-    let expectedSeekTime = null;      // strictly track programmatic seeks
-
-    const PAGE_API_SEEK_BRIDGE = 1;
-
-    function shouldUsePageApiSeek() {
-        return window.KOALA_PAGE_API_SEEK_ENABLED === true &&
-            typeof window.koalaFindPageApiSeekProvider === 'function' &&
-            !!window.koalaFindPageApiSeekProvider(window.location.hostname);
-    }
-
-    function seekVideo(video, targetTime) {
-        expectedSeekTime = targetTime;
-        if (shouldUsePageApiSeek()) {
-            window.postMessage({ __koalaPageApiSeek: PAGE_API_SEEK_BRIDGE, kind: 'seek', time: targetTime }, '*');
-            return;
-        }
-        video.currentTime = targetTime;
-    }
-
-    // --- Play/Pause Coalescing (leading + trailing) ---
-    // Media players (HLS/DASH, ad insertion, ABR/quality switches, source swaps,
-    // page teardown) fire bursts of native play/pause events within a few hundred
-    // ms. Relaying each as a distinct command spams peers and the relay.
-    //
-    // Strategy: emit the FIRST event immediately (leading edge → a deliberate
-    // single play/pause has zero added latency), then hold a short window. If
-    // more play/pause events arrive during the window it's a burst — we suppress
-    // the intermediate churn and, once it settles, emit the FINAL state on the
-    // trailing edge.
-    //
-    // We deliberately do NOT dedup the trailing send against the leading one. A
-    // remote play/pause may be applied mid-window (e.g. I pause, peer plays, I
-    // pause again within 150ms): the settled state then equals my last *sent*
-    // state yet is a genuine change versus the now-shared state — suppressing it
-    // would desync. Re-sending an unchanged state is a harmless no-op on peers,
-    // so re-sending is always the safe choice. Echo-suppression and seek-flush
-    // still run synchronously on event arrival (see reportEvent) — only the
-    // network emit is governed here.
-    const PLAY_PAUSE_COALESCE_MS = 150;
-    let playPauseCoalesceTimer = null;  // non-null = a coalescing window is open
-    let pendingPlayPauseAction = null;  // last play/pause seen during the window, awaiting trailing flush
-
-    // --- Episode Auto-Sync State ---
-    let lastKnownMediaTitle = null;
-    let episodeTransitionDebounce = null;
-    let _pendingLobbyTitle = null; // Title we're waiting to match (from remote lobby)
-    let lobbyPollTimer = null;
-    let _autoSyncEnabled = true; // Cached setting, updated via storage.onChanged
-    let _audioSettings = null;
-    let _audioProcessingAllowed = true;
-
-    // Cache the autoSyncNextEpisode setting (local-only; never read from sync)
-    chrome.storage.local.get(['autoSyncNextEpisode', 'audioSettings'], (data) => {
-        _autoSyncEnabled = data.autoSyncNextEpisode !== false;
-        _audioSettings = mergeAudioSettings(data.audioSettings);
-        const video = findVideo();
-        if (video && _audioProcessingAllowed) applyAudioSettings(video, _audioSettings);
-    });
-    chrome.storage.onChanged.addListener((changes, area) => {
-        if (area === 'local' && changes.autoSyncNextEpisode) {
-            _autoSyncEnabled = changes.autoSyncNextEpisode.newValue !== false;
-        }
-    });
-
-    // --- Host Control Mode (guest-side) ---
-    // When a room is in 'host-only' mode and we're a guest, a deliberate local
-    // pause/seek must not drive the room (background/server already drop it). Here
-    // we handle the *local* UX: snap back to the host's position, or — if the user
-    // really wants to — let them go solo (desync) with a resync escape hatch.
-    let hcmControlMode = 'everyone';   // mirror of room control mode
-    let hcmAmController = false;        // are we allowed to drive (owner or co-host)?
-    let hcmHostPeerId = null;          // last known host peerId (room/host identity)
-    let hcmDesynced = false;           // user chose to go solo
-    let hcmSnapBackCooldownUntil = 0;  // suppress re-trigger right after a snap-back
-    let hcmDeferredSnapPending = false; // a buffer-aware snap-back is waiting for readiness
-    let hcmLastUserGestureAt = 0;      // for deliberate-vs-involuntary classification
-    let hcmBufferingUntil = 0;         // set on 'waiting' — buffering grace window
-    let hcmDialogTimer = null;         // 8s auto-stay timer — cleared on dialog replace (H-4)
-    // Localized strings for the in-page dialog/badge (content has no i18n loader;
-    // background resolves them via GET_HCM_STRINGS on init). English fallbacks here.
-    const hcmStrings = {
-        title:  'KoalaSync · Host controls this room',
-        body:   'Only the host can control playback in this room. Keep watching together, or watch on your own?',
-        stay:   'Stay in sync',
-        solo:   'Watch on my own',
-        badge:  'Watching on your own',
-        resync: 'Resync'
-    };
-    const HCM_USER_GESTURE_MS = 1000;
-    const HCM_BUFFERING_GRACE_MS = 1500;
-    const HCM_SNAP_BACK_COOLDOWN_MS = 1000;
-    const HCM_BUFFER_WAIT_MS = 8000;   // cap on waiting for a buffering player before snapping anyway
-
-    // Track genuine user input so we can tell a deliberate pause/seek from a
-    // player-/browser-initiated one. Capturing + passive so we never interfere.
-    const _hcmGesture = () => { hcmLastUserGestureAt = Date.now(); };
-    document.addEventListener('keydown', _hcmGesture, { capture: true, passive: true });
-    document.addEventListener('pointerdown', _hcmGesture, { capture: true, passive: true });
-
-    function hcmIsGuestGated() {
-        return hcmControlMode === 'host-only' && !hcmAmController;
-    }
-
-    // EC-9 intent classifier: only a *clearly deliberate* guest action triggers the
-    // dialog/snap-back. Anything that smells involuntary (buffering, seeking, tab
-    // refocus, no recent gesture) is treated as involuntary. Bias intentional —
-    // in host-only the guest never broadcasts anyway, so this only tunes UX.
-    function hcmClassifyIntent() {
-        const video = findVideo();
-        if (!video) return 'involuntary';
-        if (hcmIsLive(video)) return 'live';                   // EC-15: degrade, don't gate
-        if (video.readyState < 3) return 'involuntary';        // buffering / not enough data
-        if (video.seeking) return 'involuntary';
-        if (Date.now() < hcmBufferingUntil) return 'involuntary';
-        if (Date.now() < visibilityGraceUntil) return 'involuntary';
-        if (Date.now() - hcmLastUserGestureAt > HCM_USER_GESTURE_MS) return 'involuntary';
-        return 'deliberate';
-    }
-
-    // Live detection (EC-15 + DVR). Pure live reports duration Infinity/NaN. Live-DVR
-    // (Twitch/YouTube-live with rewind) reports a *finite, sliding* duration — its
-    // seekable window doesn't start at 0, which we use as the DVR signal.
-    function hcmIsLive(video) {
-        // Don't trust duration before metadata has loaded (readyState >= 1) —
-        // otherwise pre-loaded videos report NaN and get misclassified as live,
-        // which suppresses the desync dialog (L-2).
-        if (video.readyState < 1) return false;
-        if (!Number.isFinite(video.duration)) return true;
-        try {
-            const s = video.seekable;
-            if (s && s.length > 0 && s.start(0) > 1) return true; // sliding DVR window
-        } catch (_e) { /* seekable may throw if empty */ }
-        return false;
-    }
-
-    // Snap the local player back to the host's current position/state.
-    function hcmSnapBackToHost(target) {
-        if (hcmDesynced) return; // user opted out — never yank them back automatically
-        hcmSnapBackCooldownUntil = Date.now() + HCM_SNAP_BACK_COOLDOWN_MS;
-        const video = findVideo();
-        if (!video) return;
-        if (target && Number.isFinite(target.targetTime)) {
-            tryMediaAction(EVENTS.SEEK, { targetTime: target.targetTime });
-        }
-        // Adopt the host's play/pause state — but ONLY if we actually know it.
-        // Defaulting to PLAY when the state is unknown would auto-resume a paused
-        // video against the host's real state (H-1).
-        if (target && target.playbackState === 'paused') {
-            tryMediaAction(EVENTS.PAUSE);
-        } else if (target && target.playbackState === 'playing') {
-            tryMediaAction(EVENTS.PLAY);
-        }
-        reportLog('Host-only: snapped back to host position', 'info');
-    }
-
-    // Resync to the host's current position, retrying briefly if the host's state
-    // isn't known yet (e.g. they just paused and no heartbeat has propagated) —
-    // otherwise the request is a silent no-op and the user thinks they're synced
-    // when they aren't. Shared by the dialog's "Stay in sync" and the Resync badge.
-    function hcmRequestHostSyncWithRetry() {
-        let attempts = 0;
-        const tryOnce = () => {
-            chrome.runtime.sendMessage({ type: 'REQUEST_HOST_SYNC' }, (res) => {
-                if (chrome.runtime.lastError || !res || !res.target) {
-                    if (++attempts < 5) setTimeout(tryOnce, 250);
-                    else reportLog('Host-only: resync requested but host state unavailable', 'warn');
-                    return;
-                }
-                hcmSnapBackToHost(res.target);
-            });
-        };
-        tryOnce();
-    }
-
-    // Buffer-aware snap-back (#3). An involuntary pause/seek often coincides with the
-    // player buffering — and a player can't actually play while it's stalled. Snapping
-    // immediately just fights the buffer (seek → re-buffer → another pause → …), which
-    // looks like stutter. Instead: if the player isn't ready, wait until it can play
-    // (readyState>=3, not seeking), then snap ONCE to the host's *current* position
-    // (re-queried, since the captured target may be stale by the time buffering ends).
-    // Player-agnostic on purpose — we can't enumerate every site, so this must be safe
-    // regardless of whether a given player fires 'pause' or only 'waiting'.
-    function hcmDeferredSnapBack() {
-        if (hcmDeferredSnapPending) return; // already waiting — don't stack polls
-        hcmDeferredSnapPending = true;
-        const deadline = Date.now() + HCM_BUFFER_WAIT_MS;
-        const poll = () => {
-            // Abort if the reason to snap is gone: user went solo, we're no longer a
-            // gated guest, or the video vanished.
-            if (hcmDesynced || !hcmIsGuestGated()) { hcmDeferredSnapPending = false; return; }
-            const video = findVideo();
-            const ready = video && video.readyState >= 3 && !video.seeking;
-            if (ready || Date.now() >= deadline) {
-                hcmDeferredSnapPending = false;
-                hcmRequestHostSyncWithRetry(); // fresh host position + snap once
-                return;
-            }
-            setTimeout(poll, 300);
-        };
-        poll();
-    }
-
-    // Entry point: background told us our local action was blocked in host-only.
-    function hcmHandleBlocked(action, target) {
-        // HOST_BLOCKED is only ever sent to a gated guest (background verifies
-        // host-only + !host before sending), so it's authoritative. Adopt the
-        // role/mode from it in case our CONTROL_MODE broadcast hasn't landed yet
-        // (join race, EC-5) — otherwise we'd miss the dialog/snap-back.
-        hcmControlMode = 'host-only';
-        hcmAmController = false;
-        if (hcmDesynced) return; // already solo, nothing to do
-
-        const intent = hcmClassifyIntent();
-        if (intent === 'live') return;          // EC-15: leave the guest alone on live
-        if (intent === 'involuntary') {
-            // EC-4 loop guard: only the silent auto snap-back is suppressed by the
-            // cooldown — the deliberate dialog path below must still go through,
-            // otherwise a second deliberate pause inside the cooldown window leaves
-            // the user stuck paused with no UI (M-3).
-            if (Date.now() < hcmSnapBackCooldownUntil || hcmDeferredSnapPending) return;
-            // Buffering/ads/throttle — silently re-sync, no dialog spam.
-            const video = findVideo();
-            if (video && video.readyState >= 3 && !video.seeking) {
-                // Ready now → snap immediately. Use the captured target if it's
-                // usable, otherwise re-query+retry (host state may not be known yet)
-                // so we never leave the guest silently stuck (consistent with the
-                // deferred and "Stay in sync" paths).
-                if (target && Number.isFinite(target.targetTime)) hcmSnapBackToHost(target);
-                else hcmRequestHostSyncWithRetry();
-            } else {
-                hcmDeferredSnapBack();             // buffering → wait for ready, then snap once (#3)
-            }
-            return;
-        }
-        // Deliberate: offer the choice (Teleparty-style), default = snap back.
-        hcmShowDesyncDialog(action, target);
-    }
-
-    // --- In-page UI (dialog + persistent desync badge) ---
-    // Built with the DOM API (CSSOM .style is CSP-safe; inline style="" in innerHTML
-    // is stripped by strict style-src on Netflix/YouTube/Disney+). Hosted in a
-    // Shadow DOM so the page's CSS can't restyle or hide our controls.
-    let hcmDialogHost = null;  // shadow host element for the dialog
-    let hcmBadgeHost = null;   // shadow host element for the persistent badge
-    let hcmBadgePending = false;  // retry flag for early-injection badge creation (L-4)
-
-    function hcmEl(tag, css, text) {
-        const el = document.createElement(tag);
-        if (css) el.style.cssText = css;        // CSSOM assignment — not gated by CSP
-        if (text != null) el.textContent = text;
-        return el;
-    }
-
-    function hcmRemoveDialog() {
-        // Cancel any pending auto-stay timer so a replaced dialog's stale closure
-        // can't later remove its successor / snap to an outdated target (H-4).
-        if (hcmDialogTimer) { clearTimeout(hcmDialogTimer); hcmDialogTimer = null; }
-        if (hcmDialogHost) { hcmDialogHost.remove(); hcmDialogHost = null; }
-    }
-
-    function hcmShowDesyncDialog(action, target) {
-        if (!document.body) { hcmSnapBackToHost(target); return; }
-        hcmRemoveDialog();
-        const host = hcmEl('div', 'all:initial');
-        const root = host.attachShadow({ mode: 'open' });
-
-        const wrap = hcmEl('div', 'position:fixed;z-index:2147483647;left:50%;bottom:32px;transform:translateX(-50%);background:#1f2937;color:#f9fafb;font:14px/1.4 system-ui,sans-serif;padding:16px 18px;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.45);max-width:360px;border:1px solid #374151');
-        wrap.setAttribute('role', 'dialog');
-        const title = hcmEl('div', 'font-weight:600;margin-bottom:6px', hcmStrings.title);
-        const body = hcmEl('div', 'margin-bottom:12px;color:#d1d5db', hcmStrings.body);
-        const btnRow = hcmEl('div', 'display:flex;gap:8px;justify-content:flex-end');
-        const soloBtn = hcmEl('button', 'background:#374151;color:#f9fafb;border:0;padding:8px 12px;border-radius:8px;cursor:pointer', hcmStrings.solo);
-        const stayBtn = hcmEl('button', 'background:#10b981;color:#062a20;border:0;padding:8px 12px;border-radius:8px;cursor:pointer;font-weight:600', hcmStrings.stay);
-        btnRow.append(soloBtn, stayBtn);
-        wrap.append(title, body, btnRow);
-        root.appendChild(wrap);
-        document.body.appendChild(host);
-        hcmDialogHost = host;
-
-        let settled = false;
-        // Re-query the host's current position on click instead of using the
-        // potentially stale target captured at HOST_BLOCKED time (M-1).
-        const stay = () => {
-            if (settled) return; settled = true; hcmRemoveDialog();
-            hcmRequestHostSyncWithRetry();
-        };
-        const solo = () => { if (settled) return; settled = true; hcmRemoveDialog(); hcmEnterDesync(); };
-        stayBtn.addEventListener('click', stay);
-        soloBtn.addEventListener('click', solo);
-        // EC-18: if the user ignores the prompt, default to staying in sync.
-        hcmDialogTimer = setTimeout(() => { if (!settled) stay(); }, 8000);
-    }
-
-    function hcmEnterDesync() {
-        hcmDesynced = true;
-        reportLog('Host-only: you chose to watch on your own (desynced)', 'warn');
-        // Notify background so it can relay our desynced state to the host via
-        // heartbeats — the host's UI then knows we're not following commands
-        // instead of appearing silently un-ACK'd.
-        chrome.runtime.sendMessage({ type: 'HCM_DESYNC_STATE', desynced: true }).catch(() => {});
-        hcmShowBadge();
-    }
-
-    function hcmExitDesync() {
-        const wasDesynced = hcmDesynced;
-        hcmDesynced = false;
-        hcmRemoveBadge();
-        if (wasDesynced) {
-            chrome.runtime.sendMessage({ type: 'HCM_DESYNC_STATE', desynced: false }).catch(() => {});
-        }
-        // Resync to the host's current position (retries if host state not yet known).
-        hcmRequestHostSyncWithRetry();
-        reportLog('Host-only: resynced with the host', 'info');
-    }
-
-    function hcmShowBadge() {
-        if (hcmBadgeHost) return;
-        if (!document.body) {
-            // Body not ready yet (very early injection). Defer until DOMReady,
-            // otherwise the desynced user silently never sees the badge (L-4).
-            if (!hcmBadgePending) {
-                hcmBadgePending = true;
-                const retry = () => {
-                    hcmBadgePending = false;
-                    if (hcmDesynced && !hcmBadgeHost) hcmShowBadge();
-                };
-                if (document.readyState === 'loading') {
-                    document.addEventListener('DOMContentLoaded', retry, { once: true });
-                } else {
-                    setTimeout(retry, 50);
-                }
-            }
-            return;
-        }
-        const host = hcmEl('div', 'all:initial');
-        const root = host.attachShadow({ mode: 'open' });
-        const b = hcmEl('div', 'position:fixed;z-index:2147483646;right:16px;bottom:16px;background:#b45309;color:#fff;font:13px/1.3 system-ui,sans-serif;padding:8px 12px;border-radius:10px;box-shadow:0 6px 20px rgba(0,0,0,.4);cursor:pointer;display:flex;align-items:center;gap:8px');
-        b.append(hcmEl('span', null, '● ' + hcmStrings.badge), hcmEl('span', 'text-decoration:underline', hcmStrings.resync));
-        b.addEventListener('click', hcmExitDesync);
-        root.appendChild(b);
-        document.body.appendChild(host);
-        hcmBadgeHost = host;
-    }
-
-    function hcmRemoveBadge() {
-        if (hcmBadgeHost) { hcmBadgeHost.remove(); hcmBadgeHost = null; }
-    }
-
-    function hcmReset() {
-        const wasDesynced = hcmDesynced;
-        hcmDesynced = false;
-        hcmDeferredSnapPending = false;
-        hcmSnapBackCooldownUntil = 0; // don't let a stale cooldown swallow the next snap-back
-        hcmBufferingUntil = 0;
-        hcmRemoveDialog();
-        hcmRemoveBadge();
-        // If we were desynced, notify background so it stops reporting us as
-        // desynced in heartbeats (otherwise the host's UI keeps showing the
-        // stale Solo badge until the next state change).
-        if (wasDesynced) {
-            chrome.runtime.sendMessage({ type: 'HCM_DESYNC_STATE', desynced: false }).catch(() => {});
-        }
-    }
-
-    function reportLog(message, level = 'info') {
-        chrome.runtime.sendMessage({ type: 'LOG', message, level }).catch(() => {});
-    }
-
-    // --- Helper: find the best video element on the page ---
-    // Prefers larger, visible videos over tiny preview/trailer elements.
-    function findVideo(root = document) {
-        const candidates = Array.from(root.querySelectorAll('video'));
-
-        // Scan likely media hosts even when light-DOM videos exist; many players
-        // expose a tiny preview/ad video outside Shadow DOM and the real player inside.
-        const potentialHosts = root.querySelectorAll('[id*="player" i], [class*="player" i], [id*="video" i], [class*="video" i], [id*="media" i], [class*="media" i], [id*="stream" i], [class*="stream" i], ytd-player, netflix-player, emby-player, jellyfin-player, video-player');
-        for (const el of potentialHosts) {
-            if (el.shadowRoot) {
-                const found = findVideo(el.shadowRoot);
-                if (found) candidates.push(found);
-            }
-        }
-
-        if (candidates.length === 0) return null;
-
-        // Multiple videos found → pick the best one
-        if (candidates.length === 1) return candidates[0];
-
-        let best = null;
-        let bestScore = -1;
-        for (const v of candidates) {
-            if (v.tagName !== 'VIDEO') continue;
-            // Score: visible area + bonus for unmuted + bonus for longer duration
-            const area = (v.videoWidth || v.offsetWidth || 0) * (v.videoHeight || v.offsetHeight || 0);
-            const unmutedBonus = v.muted ? 0 : 100000;
-            const durationBonus = (v.duration && isFinite(v.duration) ? v.duration : 0) * 100;
-            const score = area + unmutedBonus + durationBonus;
-            if (score > bestScore) {
-                bestScore = score;
-                best = v;
-            }
-        }
-        return best;
-    }
-
-    // --- Audio Processing Module ---
-    const AUDIO_PRESETS = {
-        recommended: { threshold: -24, ratio: 8, attack: 0.010, release: 0.300, knee: 15 },
-        dynamicRange: { threshold: -18, ratio: 4, attack: 0.020, release: 0.200, knee: 10 },
-        vocalEnhancement: { threshold: -12, ratio: 3, attack: 0.015, release: 0.150, knee: 5 },
-        smooth: { threshold: -30, ratio: 1.5, attack: 0.030, release: 0.250, knee: 20 },
-        custom: { threshold: -24, ratio: 12, attack: 0.003, release: 0.250, knee: 30 }
-    };
-    const DEFAULT_AUDIO_SETTINGS = {
-        enabled: false,
-        compressor: {
-            enabled: false,
-            preset: 'recommended',
-            customParams: { ...AUDIO_PRESETS.custom }
-        }
-    };
-    let audioCtx = null;
-    let audioChains = new WeakMap();
-    let currentAudioVideo = null;
-
-    function mergeAudioSettings(settings = {}) {
-        const safeSettings = settings && typeof settings === 'object' ? settings : {};
-        return {
-            ...DEFAULT_AUDIO_SETTINGS,
-            ...safeSettings,
-            compressor: {
-                ...DEFAULT_AUDIO_SETTINGS.compressor,
-                ...(safeSettings.compressor || {}),
-                customParams: {
-                    ...DEFAULT_AUDIO_SETTINGS.compressor.customParams,
-                    ...(safeSettings.compressor?.customParams || {})
-                }
-            }
-        };
-    }
-
-    function initAudioContext() {
-        if (!audioCtx) {
-            try {
-                const AudioContextClass = window.AudioContext || window.webkitAudioContext;
-                if (!AudioContextClass) return null;
-                audioCtx = new AudioContextClass({ latencyHint: 'interactive' });
-            } catch (e) {
-                reportLog(`Audio Processing unavailable: ${e.message}`, 'warn');
-                return null;
-            }
-        }
-        if (audioCtx.state === 'suspended') {
-            audioCtx.resume().catch(() => { reportLog('AudioContext resume failed - browser may need page interaction first', 'warn'); });
-        }
-        return audioCtx;
-    }
-
-    function closeAudioContext() {
-        if (audioCtx) {
-            audioCtx.close().catch(() => {});
-            audioCtx = null;
-        }
-        audioChains = new WeakMap();
-        currentAudioVideo = null;
-    }
-
-    function setupAudioChain(videoEl) {
-        if (audioChains.has(videoEl)) return audioChains.get(videoEl);
-        const ctx = initAudioContext();
-        if (!ctx) return null;
-
-        try {
-            const src = ctx.createMediaElementSource(videoEl);
-            const compressor = ctx.createDynamicsCompressor();
-            const dryGain = ctx.createGain();
-            const compGain = ctx.createGain();
-
-            src.connect(dryGain);
-            dryGain.connect(ctx.destination);
-            src.connect(compressor);
-            compressor.connect(compGain);
-            compGain.connect(ctx.destination);
-
-            dryGain.gain.value = 1;
-            compGain.gain.value = 0;
-
-            const chain = { compressor, dryGain, compGain, active: false };
-            audioChains.set(videoEl, chain);
-            currentAudioVideo = videoEl;
-            return chain;
-        } catch (e) {
-            reportLog(`Audio Processing setup failed: ${e.message}`, 'warn');
-            return null;
-        }
-    }
-
-    function rampGain(node, value, t) {
-        const current = node.gain.value;
-        node.gain.cancelScheduledValues(t);
-        node.gain.setValueAtTime(current, t);
-        node.gain.linearRampToValueAtTime(value, t + 0.04);
-    }
-
-    function applyAudioBypass(videoEl) {
-        const chain = audioChains.get(videoEl);
-        if (!chain || !chain.active) return;
-        const t = chain.dryGain.context.currentTime;
-        rampGain(chain.dryGain, 1, t);
-        rampGain(chain.compGain, 0, t);
-        chain.active = false;
-        reportLog('Audio compressor disabled', 'info');
-    }
-
-    function bypassCurrentAudioProcessing() {
-        if (currentAudioVideo) applyAudioBypass(currentAudioVideo);
-    }
-
-    function applyAudioSettings(videoEl, settings) {
-        const mergedSettings = mergeAudioSettings(settings);
-        if (!mergedSettings.enabled || !mergedSettings.compressor?.enabled) {
-            applyAudioBypass(videoEl);
-            return;
-        }
-
-        const chain = setupAudioChain(videoEl);
-        if (!chain) return;
-
-        const cSettings = mergedSettings.compressor;
-        const params = cSettings.preset === 'custom'
-            ? cSettings.customParams
-            : AUDIO_PRESETS[cSettings.preset] || AUDIO_PRESETS.recommended;
-
-        chain.compressor.threshold.value = params.threshold ?? -24;
-        chain.compressor.knee.value = params.knee ?? 15;
-        chain.compressor.ratio.value = params.ratio ?? 8;
-        chain.compressor.attack.value = params.attack ?? 0.010;
-        chain.compressor.release.value = params.release ?? 0.300;
-
-        if (!chain.active) {
-            const t = chain.dryGain.context.currentTime;
-            rampGain(chain.dryGain, 0, t);
-            rampGain(chain.compGain, 1, t);
-            chain.active = true;
-            reportLog('Audio compressor enabled', 'info');
-        }
-    }
-
-    // --- Episode Auto-Sync: Detection ---
-    function getMediaTitle() {
-        return (navigator.mediaSession && navigator.mediaSession.metadata)
-            ? navigator.mediaSession.metadata.title
-            : null;
-    }
-
-    // Extract a canonical episode identifier from a title string.
-    // Handles: S01E01, S1E1, S01 - E01, Season 1 Episode 1, "Folge 5", "Episode 5", "Ep. 5", "#5"
-    // Returns null if no episode pattern found.
-    // --- SHARED_EPISODE_UTILS_INJECT_START ---
-    // This block is automatically replaced by /scripts/build-extension.js
-    function extractEpisodeId(title) {
-        if (!title || typeof title !== 'string') return null;
-        const se = title.match(/S(?:eason\s*)?(\d+)[^a-zA-Z0-9]*E(?:pisode\s*)?(\d+)/i);
-        if (se) return `S${String(se[1]).padStart(2, '0')}E${String(se[2]).padStart(2, '0')}`;
-        const ep = title.match(/(?:Episode|Folge|Ep\.?|#)\s*(\d+)/i);
-        if (ep) return `EP${String(ep[1]).padStart(3, '0')}`;
-        return null;
-    }
-
-    function sameEpisode(titleA, titleB) {
-        if (!titleA && !titleB) return true;
-        if (!titleA || !titleB) return false;
-        const idA = extractEpisodeId(titleA);
-        const idB = extractEpisodeId(titleB);
-        if (idA && idB) return idA === idB;
-        if (idA || idB) return false;
-        return titleA === titleB;
-    }
-    // --- SHARED_EPISODE_UTILS_INJECT_END ---
-
-    // Returns true only when we are CERTAIN the episodes differ.
-    // Permissive: only blocks if BOTH titles have parseable IDs AND they differ.
-    // Films, music, unparseable titles always pass through.
-    function isDifferentEpisode(titleA, titleB) {
-        if (!titleA || !titleB) return false; // Unknown → allow
-        const idA = extractEpisodeId(titleA);
-        const idB = extractEpisodeId(titleB);
-        if (!idA || !idB) return false; // At least one unparseable → allow
-        return idA !== idB;             // Both parseable → only block if different
-    }
-
-    function checkEpisodeTransition() {
-        const currentTitle = getMediaTitle();
-        const video = findVideo();
-
-        // Only trigger if: we had a previous title, the title changed,
-        // a video exists, and we're near the start of new content.
-        if (lastKnownMediaTitle && currentTitle
-            && !sameEpisode(currentTitle, lastKnownMediaTitle)
-            && video
-            && video.currentTime < 5
-            && video.readyState >= 1) {
-            onEpisodeTransition(currentTitle);
-        }
-
-        // Always track the latest known title
-        if (currentTitle) lastKnownMediaTitle = currentTitle;
-    }
-
-    function onEpisodeTransition(newTitle) {
-        // Debounce: prevent duplicate fires from multiple signals
-        if (episodeTransitionDebounce) return;
-        episodeTransitionDebounce = setTimeout(() => {
-            episodeTransitionDebounce = null;
-        }, 2000);
-
-        reportLog(`Episode transition detected: "${newTitle}"`, 'info');
-
-        // EC-12: a new episode dissolves any solo/desync state — the guest rejoins
-        // the room for the fresh content rather than staying stuck on the old one.
-        if (hcmDesynced) hcmReset();
-
-        // Do NOT pause here. We notify background.js first.
-        // Background checks the setting; if enabled it creates a lobby
-        // and sends back PAUSE_FOR_LOBBY so we only freeze if the feature is on.
-        chrome.runtime.sendMessage({
-            type: 'EPISODE_CHANGED',
-            payload: { newTitle }
-        }).catch(() => {});
-    }
-
-    function checkAndReportLobbyReady(expectedTitle) {
-        const video = findVideo();
-        const currentTitle = getMediaTitle();
-
-        if (video && currentTitle && sameEpisode(currentTitle, expectedTitle)
-            && video.currentTime < 5 && video.readyState >= 1) {
-            // Match! Pause at start and report ready.
-            if (!video.paused) {
-                _setSuppress('paused');
-                video.pause();
-            }
-            stopLobbyPoll();
-            chrome.runtime.sendMessage({
-                type: 'EPISODE_READY_LOCAL',
-                payload: { title: currentTitle }
-            }).catch(() => {});
-            reportLog(`Episode lobby: Ready for "${currentTitle}"`, 'success');
-            return true;
-        }
-        return false;
-    }
-
-    function startLobbyPoll(expectedTitle) {
-        stopLobbyPoll();
-        _pendingLobbyTitle = expectedTitle;
-
-        // NOTE: Do NOT pause here. Three callers reach this function:
-        // 1. PAUSE_FOR_LOBBY (initiator): already paused by that handler before calling us.
-        // 2. EPISODE_LOBBY (non-initiator): peer may still be on the PREVIOUS episode — pausing
-        //    would freeze them mid-episode. The pause happens inside checkAndReportLobbyReady()
-        //    only once their title actually matches.
-        // 3. CONTENT_BOOT recovery: same reasoning as (2).
-
-        // Check immediately
-        if (checkAndReportLobbyReady(expectedTitle)) return;
-
-        // Poll every 2 seconds — no log spam, internal only
-        lobbyPollTimer = setInterval(() => {
-            checkAndReportLobbyReady(expectedTitle);
-        }, 2000);
-    }
-
-
-    function stopLobbyPoll() {
-        _pendingLobbyTitle = null;
-        if (lobbyPollTimer) {
-            clearInterval(lobbyPollTimer);
-            lobbyPollTimer = null;
-        }
-    }
-
-    // --- Helper: YouTube/Twitch specific actions ---
-    function tryMediaAction(action, data) {
-        const video = findVideo();
-        if (!video) return;
-
-        if (action === EVENTS.SEEK) {
-            const target = data ? (data.targetTime !== undefined ? data.targetTime : data.currentTime) : undefined;
-            if (!Number.isFinite(target)) {
-                reportLog(`Media Action Error: Invalid seek payload - ${JSON.stringify(data)}`, 'error');
-                return;
-            }
-            data = { ...data, targetTime: target };
-        }
-
-        try {
-            const host = window.location.hostname.toLowerCase();
-            const isYouTube = host === 'youtube.com' || host.endsWith('.youtube.com');
-            const isTwitch  = host === 'twitch.tv' || host.endsWith('.twitch.tv');
-
-            if (isYouTube) {
-                const ytButton = document.querySelector('.ytp-play-button');
-                if (ytButton) {
-                    const isCurrentlyPlaying = !video.paused;
-                    if ((action === EVENTS.PLAY && !isCurrentlyPlaying) || (action === EVENTS.PAUSE && isCurrentlyPlaying)) {
-                        _setSuppress(action === EVENTS.PLAY ? 'playing' : 'paused');
-                        ytButton.click();
-                    }
-                    if (action === EVENTS.SEEK) {
-                        seekVideo(video, data.targetTime);
-                    }
-                    return;
-                }
-            }
-
-            if (isTwitch) {
-                const twitchButton = document.querySelector('[data-a-target="player-play-pause-button"]');
-                if (twitchButton) {
-                    const isCurrentlyPlaying = !video.paused;
-                    if ((action === EVENTS.PLAY && !isCurrentlyPlaying) || (action === EVENTS.PAUSE && isCurrentlyPlaying)) {
-                        _setSuppress(action === EVENTS.PLAY ? 'playing' : 'paused');
-                        twitchButton.click();
-                    }
-                    if (action === EVENTS.SEEK) {
-                        seekVideo(video, data.targetTime);
-                    }
-                    return;
-                }
-            }
-
-            // Fallback for native HTML5
-            if (action === EVENTS.PLAY) {
-                _setSuppress('playing');
-                video.play().catch((e) => {
-                    reportLog(`Playback prevented: ${e.message}`, 'warn');
-                    _clearSuppress('playing');
-                });
-            } else if (action === EVENTS.PAUSE) {
-                _setSuppress('paused');
-                video.pause();
-            } else if (action === EVENTS.SEEK) {
-                seekVideo(video, data.targetTime);
-            }
-    } catch (e) {
-            reportLog(`Media Action Error: ${e.message}`, 'error');
-        }
-    }
-
-    // --- Helper: Wait until video is ready for playback (buffered & seeked) ---
-    function pollSeekReady(targetTime, timeoutMs = 8000) {
-        return new Promise((resolve) => {
-            const interval = 150;
-            let elapsed = 0;
-            const timer = setInterval(() => {
-                const video = findVideo(); // Re-query DOM on every iteration
-                if (!video) {
-                    clearInterval(timer);
-                    resolve(false);
-                    return;
-                }
-
-                elapsed += interval;
-                const timeDiff = Math.abs(video.currentTime - targetTime);
-                const ready = video.readyState >= 3 && timeDiff < 2.0;
-                if (ready) {
-                    clearInterval(timer);
-                    resolve(true);
-                } else if (elapsed >= timeoutMs) {
-                    clearInterval(timer);
-                    resolve(false);
-                }
-            }, interval);
-        });
-    }
-
-    // Listen for commands from background.js
-    chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
-        if (!message) return;
-        if (message.action === 'get_current_time') {
-            const video = findVideo();
-            sendResponse({ currentTime: video ? video.currentTime : null });
-            return true;
-        }
-
-        if (message.action === 'APPLY_AUDIO_SETTINGS') {
-            _audioProcessingAllowed = true;
-            _audioSettings = mergeAudioSettings(message.settings);
-            const video = findVideo();
-            if (video) applyAudioSettings(video, _audioSettings);
-            sendResponse({ ok: true });
-            return true;
-        }
-
-        if (message.action === 'RESET_AUDIO_PROCESSING') {
-            _audioProcessingAllowed = false;
-            bypassCurrentAudioProcessing();
-            sendResponse({ ok: true });
-            return true;
-        }
-
-        // Host Control Mode: room mode/role changed.
-        if (message.type === 'CONTROL_MODE') {
-            const wasGated = hcmIsGuestGated();
-            const prevHostPeerId = hcmHostPeerId;
-            hcmControlMode = message.controlMode || 'everyone';
-            hcmAmController = !!message.amController;
-            hcmHostPeerId = message.hostPeerId || null;
-            // Reset guest-side state when leaving the gated state, OR when the
-            // host identity changes (room switch, host-leave fallback, missed
-            // teardown broadcast) — clears stale desync so a rejoin starts clean (H-3).
-            const hostChanged = prevHostPeerId !== null && hcmHostPeerId !== prevHostPeerId;
-            if ((wasGated && !hcmIsGuestGated()) || hostChanged) hcmReset();
-            sendResponse({ ok: true });
-            return true;
-        }
-
-        // Host Control Mode: background blocked our local action — handle UX locally.
-        if (message.type === 'HOST_BLOCKED') {
-            hcmHandleBlocked(message.action, message.target || null);
-            sendResponse({ ok: true });
-            return true;
-        }
-
-        // Background asks for an immediate state push (e.g. the first peer just
-        // joined while we were solo) so the newcomer syncs without waiting.
-        if (message.type === 'REQUEST_HEARTBEAT') {
-            sendHeartbeat();
-            sendResponse({ ok: true });
-            return true;
-        }
-
-        if (message.type === 'SERVER_COMMAND') {
-            const { action, payload } = message;
-            let actionCompleted = false;
-
-            // Host Control Mode: while watching on our own (desynced), don't apply
-            // host commands. Only ACK FORCE_SYNC_PREPARE — that's the one the host's
-            // force-sync flow actually waits on. Skipping CMD_ACKs for PLAY/PAUSE/SEEK
-            // is intentional so the host's UI honestly reflects that we didn't apply
-            // the command (M-2); sending them would make the host think we're synced.
-            if (hcmDesynced) {
-                const soloIgnored = [EVENTS.PLAY, EVENTS.PAUSE, EVENTS.SEEK, EVENTS.FORCE_SYNC_PREPARE, EVENTS.FORCE_SYNC_EXECUTE];
-                if (soloIgnored.includes(action)) {
-                    if (action === EVENTS.FORCE_SYNC_PREPARE) {
-                        chrome.runtime.sendMessage({ type: 'FORCE_SYNC_ACK' }).catch(() => {});
-                    }
-                    return;
-                }
-            }
-
-            // Guard: Don't execute sync commands if peers are on different episodes.
-            // Only active when autoSyncNextEpisode setting is enabled (default: on).
-            // Only blocks when BOTH sides have parseable S01E01-style IDs that differ.
-            // Films and unparseable titles always pass through.
-            const syncActions = [EVENTS.PLAY, EVENTS.PAUSE, EVENTS.SEEK,
-                                 EVENTS.FORCE_SYNC_PREPARE, EVENTS.FORCE_SYNC_EXECUTE];
-            if (_autoSyncEnabled && syncActions.includes(action)) {
-                const senderTitle = payload?.mediaTitle;
-                const myTitle = getMediaTitle();
-                if (isDifferentEpisode(senderTitle, myTitle)) {
-                    reportLog(`Episode mismatch: sender="${senderTitle || '?'}" vs mine="${myTitle || '?'}" — skipping ${action}. Disable "Auto-Sync next Episode" in settings if this causes issues.`, 'warn');
-                    if (action !== EVENTS.FORCE_SYNC_PREPARE && action !== EVENTS.FORCE_SYNC_EXECUTE) {
-                        chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId }).catch(() => {});
-                    }
-                    return;
-                }
-            }
-            
-            if (action === EVENTS.PLAY) {
-                tryMediaAction(EVENTS.PLAY);
-                chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId });
-                actionCompleted = true;
-            } else if (action === EVENTS.PAUSE) {
-                tryMediaAction(EVENTS.PAUSE);
-                chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId });
-                actionCompleted = true;
-            } else if (action === EVENTS.SEEK) {
-                tryMediaAction(EVENTS.SEEK, payload);
-                chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId });
-                actionCompleted = true;
-            } else if (action === EVENTS.FORCE_SYNC_PREPARE) {
-                if (!payload || payload.targetTime === undefined) return;
-                const video = findVideo();
-                if (video) {
-                    if (!Number.isFinite(payload.targetTime)) {
-                        reportLog(`Media Action Error: Invalid force sync payload - ${JSON.stringify(payload)}`, 'error');
-                        return;
-                    }
-                    _setSuppress('paused');
-                    video.pause();
-                    try {
-                        seekVideo(video, payload.targetTime);
-                    } catch (e) {
-                        reportLog(`Force Sync Seek Error: ${e.message}`, 'error');
-                    }
-                    pollSeekReady(payload.targetTime).then((ready) => {
-                        chrome.runtime.sendMessage({ type: 'FORCE_SYNC_ACK' }).catch(() => {});
-                        if (ready) {
-                            scheduleProactiveHeartbeat();
-                        } else {
-                            reportLog('Force Sync: Seek ready timeout, proceeding anyway', 'warn');
-                        }
-                    }).catch(() => {});
-                }
-            } else if (action === EVENTS.FORCE_SYNC_EXECUTE) {
-                stopLobbyPoll();
-                tryMediaAction(EVENTS.PLAY);
-                chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId });
-                actionCompleted = true;
-            }
-
-            if (actionCompleted) {
-                scheduleProactiveHeartbeat();
-            }
-        }
-
-        // Episode Auto-Sync: Lobby notification from background
-        if (message.type === 'EPISODE_LOBBY') {
-            // Host Control Mode: a desynced guest is watching on their own and must
-            // not join the lobby flow. Otherwise they'd pause on title match, report
-            // ready, but then ignore the host's FORCE_SYNC_* (hcmDesynced skip in
-            // SERVER_COMMAND) and end up frozen in pause. They also can't be counted
-            // toward lobby completion (background filters them out).
-            if (hcmDesynced) {
-                sendResponse({ status: 'ignored_desynced' });
-                return true;
-            }
-            const expectedTitle = message.expectedTitle;
-            if (expectedTitle) {
-                reportLog(`Episode lobby received: waiting for "${expectedTitle}"`, 'info');
-                startLobbyPoll(expectedTitle);
-            }
-            sendResponse({ status: 'ok' });
-            return true;
-        }
-
-        // Episode Auto-Sync: Lobby cancelled by background
-        if (message.type === 'EPISODE_LOBBY_CANCEL') {
-            stopLobbyPoll();
-            sendResponse({ status: 'ok' });
-            return true;
-        }
-
-        // Episode Auto-Sync: Background confirmed lobby created, pause the video
-        if (message.type === 'PAUSE_FOR_LOBBY') {
-            const video = findVideo();
-            if (video && !video.paused) {
-                _setSuppress('paused');
-                video.pause();
-            }
-            // Start lobby poll now that we know the feature is enabled
-            if (message.expectedTitle) {
-                startLobbyPoll(message.expectedTitle);
-            }
-            sendResponse({ status: 'ok' });
-            return true;
-        }
-
-        if (message.type === 'GET_VIDEO_STATE') {
-            const video = findVideo();
-
-            const platform = (() => {
-                const h = window.location.hostname.toLowerCase();
-                if (h === 'youtube.com' || h.endsWith('.youtube.com')) return 'YouTube';
-                if (h === 'twitch.tv' || h.endsWith('.twitch.tv')) return 'Twitch';
-                if (h === 'netflix.com' || h.endsWith('.netflix.com')) return 'Netflix';
-                if (h === 'primevideo.com' || h.endsWith('.primevideo.com') || /(^|\.)amazon\.(com\.[a-z]{2}|co\.[a-z]{2}|[a-z]{2,})$/.test(h)) return 'Prime Video';
-                if (h === 'disneyplus.com' || h.endsWith('.disneyplus.com')) return 'Disney+';
-                if (h === 'hulu.com' || h.endsWith('.hulu.com')) return 'Hulu';
-                if (h === 'hbomax.com' || h.endsWith('.hbomax.com') || h === 'max.com' || h.endsWith('.max.com')) return 'Max/HBO';
-                if (h === 'vimeo.com' || h.endsWith('.vimeo.com')) return 'Vimeo';
-                if (h === 'dailymotion.com' || h.endsWith('.dailymotion.com')) return 'Dailymotion';
-                return 'Generic';
-            })();
-
-            const networkStates = ['NETWORK_EMPTY', 'NETWORK_IDLE', 'NETWORK_LOADING', 'NETWORK_NO_SOURCE'];
-            const readyStates = ['HAVE_NOTHING', 'HAVE_METADATA', 'HAVE_CURRENT_DATA', 'HAVE_FUTURE_DATA', 'HAVE_ENOUGH_DATA'];
-
-            const videoCount = document.querySelectorAll('video').length;
-            const inShadowDom = (() => {
-                let el = video;
-                while (el) {
-                    if (el.toString() === '[object ShadowRoot]') return true;
-                    el = el.parentNode;
-                }
-                // Also check if any potential host has shadow root (even if no video found)
-                if (!video) {
-                    const hosts = document.querySelectorAll('[id*="player" i], [class*="player" i], [id*="video" i], [class*="video" i]');
-                    for (const host of hosts) {
-                        if (host.shadowRoot) return true;
-                    }
-                }
-                return false;
-            })();
-
-            // Build multi-video summary for debug reports
-            const allVideos = [];
-            const allVideoEls = document.querySelectorAll('video');
-            for (let i = 0; i < allVideoEls.length; i++) {
-                const v = allVideoEls[i];
-                allVideos.push({
-                    index: i,
-                    width: v.videoWidth || v.offsetWidth || 0,
-                    height: v.videoHeight || v.offsetHeight || 0,
-                    muted: v.muted,
-                    paused: v.paused,
-                    duration: (v.duration && isFinite(v.duration)) ? Math.round(v.duration) : 0,
-                    readyState: v.readyState,
-                    src: (v.currentSrc || v.src || '').substring(0, 80),
-                    selected: v === video
-                });
-            }
-
-            if (video) {
-                const dataAttributes = {};
-                if (video.attributes) {
-                    for (const attr of video.attributes) {
-                        if (attr.name.startsWith('data-')) {
-                            dataAttributes[attr.name] = attr.value;
-                        }
-                    }
-                }
-
-                const metadata = (navigator.mediaSession && navigator.mediaSession.metadata) ? {
-                    title: navigator.mediaSession.metadata.title,
-                    artist: navigator.mediaSession.metadata.artist,
-                    album: navigator.mediaSession.metadata.album,
-                    artwork: Array.from(navigator.mediaSession.metadata.artwork || []).map(a => a.src)
-                } : null;
-
-                const errorInfo = video.error ? {
-                    code: video.error.code,
-                    message: video.error.message
-                } : null;
-
-                sendResponse({
-                    found: true,
-                    paused: video.paused,
-                    currentTime: video.currentTime,
-                    duration: video.duration || 0,
-                    readyState: video.readyState,
-                    readyStateLabel: readyStates[video.readyState] || 'UNKNOWN',
-                    networkState: video.networkState,
-                    networkStateLabel: networkStates[video.networkState] || 'UNKNOWN',
-                    muted: video.muted,
-                    volume: video.volume,
-                    playbackRate: video.playbackRate,
-                    videoWidth: video.videoWidth,
-                    videoHeight: video.videoHeight,
-                    seeking: video.seeking,
-                    ended: video.ended,
-                    error: errorInfo,
-                    buffered: video.buffered && video.buffered.length > 0
-                        ? Array.from({ length: video.buffered.length }, (_, i) =>
-                            `${video.buffered.start(i).toFixed(1)}-${video.buffered.end(i).toFixed(1)}s`).join(', ')
-                        : 'none',
-                    loop: video.loop,
-                    url: window.location.href,
-                    pageTitle: document.title,
-                    id: video.id || 'none',
-                    className: video.className || 'none',
-                    src: video.src || 'none',
-                    currentSrc: video.currentSrc || 'none',
-                    dataAttributes,
-                    metadata,
-                    videoCount,
-                    inShadowDom,
-                    platform,
-                    allVideos
-                });
-            } else {
-                sendResponse({
-                    found: false,
-                    videoCount,
-                    inShadowDom,
-                    platform,
-                    allVideos,
-                    url: window.location.href,
-                    pageTitle: document.title,
-                    metadata: (navigator.mediaSession && navigator.mediaSession.metadata) ? {
-                        title: navigator.mediaSession.metadata.title,
-                        artist: navigator.mediaSession.metadata.artist,
-                        album: navigator.mediaSession.metadata.album
-                    } : null
-                });
-            }
-        }
-    });
-
-    // Detect native events
-    // Build the relay payload from the *current* media state and send it to
-    // background.js. Re-reads the video each call so deferred (coalesced) emits
-    // carry an up-to-date position. Safe with no/invalid video — it no-ops.
-    function sendContentEvent(action) {
-        const video = findVideo();
-        if (!video) return;
-
-        const current = video.currentTime;
-        if (!Number.isFinite(current)) return;
-
-        const mediaTitle = (navigator.mediaSession && navigator.mediaSession.metadata) ? navigator.mediaSession.metadata.title : null;
-
-        chrome.runtime.sendMessage({
-            type: 'CONTENT_EVENT',
-            action,
-            payload: {
-                currentTime: current,
-                targetTime: current,
-                mediaTitle: mediaTitle,
-                timestamp: Date.now()
-            }
-        }).catch(() => {});
-
-        // Trigger proactive heartbeat to push stabilized state
-        scheduleProactiveHeartbeat();
-    }
-
-    // Trailing-edge flush of a coalesced play/pause burst: emit the final settled
-    // state. No-ops only when no burst followed the leading edge. We do NOT skip
-    // when the state matches the leading send — a remote command may have changed
-    // the shared state mid-window, so re-sending is the safe (idempotent) choice.
-    function flushPlayPause() {
-        playPauseCoalesceTimer = null;
-        const finalAction = pendingPlayPauseAction;
-        pendingPlayPauseAction = null;
-        // No burst follow-up (only the leading edge fired), or invalid state.
-        if (finalAction !== EVENTS.PLAY && finalAction !== EVENTS.PAUSE) return;
-        sendContentEvent(finalAction);
-    }
-
-    function reportEvent(action) {
-        if (seekDebounceTimer && (action === EVENTS.PLAY || action === EVENTS.PAUSE)) {
-            clearTimeout(seekDebounceTimer);
-            seekDebounceTimer = null;
-            const v = findVideo();
-            if (v && Number.isFinite(v.currentTime)) {
-                lastReportedSeekTime = v.currentTime;
-                reportLog(`[Seek] Debounce flushed immediately due to ${action.toUpperCase()}`, 'info');
-                reportEvent(EVENTS.SEEK);
-            }
-        }
-
-        const video = findVideo();
-        if (!video) return;
-
-        const current = video.currentTime;
-        if (!Number.isFinite(current)) return;
-
-        const eventState = action === EVENTS.PLAY ? 'playing' : (action === EVENTS.PAUSE ? 'paused' : (action === EVENTS.SEEK ? 'seek' : null));
-
-        // Echo-suppression for remotely-applied commands. MUST stay synchronous
-        // on event arrival: the suppress timer is short-lived (300ms) and would
-        // expire if deferred, leaking an echo back to peers.
-        if (_suppressTimers[eventState]) {
-            _clearSuppress(eventState);
-            return;
-        }
-
-        // Suppress only SEEK during visibility grace period (tab re-focus ghost jump).
-        // Play/Pause pass through — user may want to immediately pause after tabbing back.
-        if (Date.now() < visibilityGraceUntil && action === EVENTS.SEEK) return;
-
-        // Coalesce play/pause bursts (source swaps, ABR, ads, teardown). The
-        // synchronous gates above have already run; only the network emit is
-        // governed here. Leading edge sends the first event instantly; further
-        // events within the window are collapsed to the final state by the
-        // trailing flush. A pending burst is REPLACED, never dropped — the last
-        // event in the window always wins.
-        if (action === EVENTS.PLAY || action === EVENTS.PAUSE) {
-            if (playPauseCoalesceTimer === null) {
-                // Window closed → fresh action. Emit now (zero added latency).
-                sendContentEvent(action);
-                pendingPlayPauseAction = null;
-            } else {
-                // Window open → part of a burst. Defer to the trailing flush.
-                pendingPlayPauseAction = action;
-                clearTimeout(playPauseCoalesceTimer);
-            }
-            playPauseCoalesceTimer = setTimeout(flushPlayPause, PLAY_PAUSE_COALESCE_MS);
-            return;
-        }
-
-        // SEEK (and any non play/pause action): emit immediately.
-        sendContentEvent(action);
-    }
-
-    // --- Tab Visibility Handling ---
-    // Browsers (especially Firefox) aggressively throttle background tabs.
-    // When the user returns to a video tab, the video element may have lost
-    // time-sync and fires spurious seek events as it recovers (jumping back).
-    // We suppress only SEEK for a short grace period after tab re-focus.
-    // Play/Pause are NOT suppressed — the user may legitimately want to
-    // pause immediately after switching back.
-    let pageVisible = !document.hidden;
-    let visibilityGraceUntil = 0;
-    const VISIBILITY_GRACE_MS = 300;
-
-    document.addEventListener('visibilitychange', () => {
-        if (document.hidden) {
-            pageVisible = false;
-        } else if (!pageVisible) {
-            pageVisible = true;
-            visibilityGraceUntil = Date.now() + VISIBILITY_GRACE_MS;
-            reportLog(`Tab re-focused — suppressing seeks for ${VISIBILITY_GRACE_MS / 1000}s to prevent ghost relay`, 'warn');
-        }
-    });
-
-    // Reset on page hide/show (bfcache, tab discard)
-    window.addEventListener('pagehide', () => {
-        pageVisible = false;
-        closeAudioContext();
-        if (keepAlivePort) { try { keepAlivePort.disconnect(); } catch (_e) { /* ignore */ } keepAlivePort = null; }
-        if (lobbyPollTimer) { clearInterval(lobbyPollTimer); lobbyPollTimer = null; }
-        if (heartbeatTimeout) { clearTimeout(heartbeatTimeout); heartbeatTimeout = null; }
-        if (proactiveHeartbeatTimeout) { clearTimeout(proactiveHeartbeatTimeout); proactiveHeartbeatTimeout = null; }
-        // Drop any pending coalesced play/pause: we are tearing down and will
-        // disconnect — peers learn we are gone via PEER_STATUS 'left'. This also
-        // intentionally suppresses the teardown play/pause burst at the source.
-        if (playPauseCoalesceTimer) { clearTimeout(playPauseCoalesceTimer); playPauseCoalesceTimer = null; pendingPlayPauseAction = null; }
-        observer.disconnect();
-    });
-    window.addEventListener('pageshow', (event) => {
-        // event.persisted is true ONLY when restored from bfcache, not on initial load
-        if (event.persisted && !pageVisible) {
-            pageVisible = true;
-            visibilityGraceUntil = Date.now() + VISIBILITY_GRACE_MS;
-            reportLog(`Page restored from cache — suppressing seeks for ${VISIBILITY_GRACE_MS / 1000}s`, 'warn');
-        }
-    });
-
-    const handlePlay = () => reportEvent(EVENTS.PLAY);
-    const handlePause = () => reportEvent(EVENTS.PAUSE);
-    // Host Control Mode: a 'waiting' (buffering) event opens a grace window so the
-    // pause it may trigger isn't misread as a deliberate guest action (EC-1).
-    const handleWaiting = () => { hcmBufferingUntil = Date.now() + HCM_BUFFERING_GRACE_MS; };
-
-    // Seek filtering: ignore HLS/DASH buffering micro-seeks.
-    // Only relay if delta >= MIN_SEEK_DELTA AND not already debouncing.
-    const handleSeeked = () => {
-        const video = findVideo();
-        if (!video) return;
-        const current = video.currentTime;
-        if (!Number.isFinite(current)) return;
-
-        // Step 1: Check expectedSeekTime (programmatic seek from remote peer)
-        if (expectedSeekTime !== null) {
-            if (Math.abs(current - expectedSeekTime) < 1.0) {
-                // Video arrived at expected time. Safely clear and ignore.
-                expectedSeekTime = null;
-                lastReportedSeekTime = current;
-                return;
-            } else {
-                // User manually scrubbed to a DIFFERENT time while we were buffering
-                expectedSeekTime = null;
-            }
-        }
-
-        // Step 2: Suppress during visibility grace period (tab re-focus ghost events)
-        if (Date.now() < visibilityGraceUntil) return;
-
-        const delta = lastReportedSeekTime !== null ? Math.abs(current - lastReportedSeekTime) : null;
-        const deltaStr = delta !== null ? `Δ${delta.toFixed(2)}s` : 'Δ?';
-
-        // Step 3: Delta check — skip micro-seeks (buffering, chapter markers, etc.)
-        if (lastReportedSeekTime !== null && delta < MIN_SEEK_DELTA) {
-            reportLog(`[Seek] Filtered (${deltaStr} < ${MIN_SEEK_DELTA}s threshold) @ ${current.toFixed(2)}s — not relayed`, 'warn');
-            return;
-        }
-
-        // Step 4: Debounce rapid consecutive seeks (e.g. scrubbing)
-        // — wait 300ms for the user to settle before relaying
-        if (seekDebounceTimer) clearTimeout(seekDebounceTimer);
-        seekDebounceTimer = setTimeout(() => {
-            seekDebounceTimer = null;
-            const v = findVideo();
-            if (!v) return;
-            const settled = v.currentTime;
-            const finalDelta = lastReportedSeekTime !== null ? Math.abs(settled - lastReportedSeekTime) : null;
-            const finalDeltaStr = finalDelta !== null ? `Δ${finalDelta.toFixed(2)}s` : 'Δ?';
-            lastReportedSeekTime = settled;
-            reportLog(`[Seek] Relayed @ ${settled.toFixed(2)}s (${finalDeltaStr})`, 'info');
-            reportEvent(EVENTS.SEEK);
-        }, 300);
-    };
-
-
-    let lastVideoSrc = undefined;
-
-    // Episode detection handler for loadeddata event
-    const handleLoadedData = () => {
-        checkEpisodeTransition();
-    };
-
-    function setupListeners() {
-        const video = findVideo();
-        if (video) {
-            if (currentAudioVideo && currentAudioVideo !== video) {
-                bypassCurrentAudioProcessing();
-            }
-            const existing = video._koalaHandlers;
-            if (existing) {
-                video.removeEventListener('play', existing.play);
-                video.removeEventListener('pause', existing.pause);
-                video.removeEventListener('seeked', existing.seeked);
-                video.removeEventListener('loadeddata', existing.loadeddata);
-                if (existing.waiting) video.removeEventListener('waiting', existing.waiting);
-            }
-            video._koalaHandlers = { play: handlePlay, pause: handlePause, seeked: handleSeeked, loadeddata: handleLoadedData, waiting: handleWaiting };
-
-            video.addEventListener('play', handlePlay);
-            video.addEventListener('pause', handlePause);
-            video.addEventListener('seeked', handleSeeked);
-            video.addEventListener('loadeddata', handleLoadedData);
-            video.addEventListener('waiting', handleWaiting);
-            video.dataset.koalaAttached = 'true';
-            lastVideoSrc = video.currentSrc || video.src || null;
-
-            if (!lastKnownMediaTitle) {
-                lastKnownMediaTitle = getMediaTitle();
-            }
-
-            if (_audioSettings && _audioProcessingAllowed) applyAudioSettings(video, _audioSettings);
-        }
-    }
-
-    // SPA Navigation Handler (MutationObserver)
-    let lastMutate = 0;
-    let observerTimeout = null;
-
-    function checkVideo() {
-        lastMutate = Date.now();
-        const video = findVideo();
-
-        if (!video && lastVideoSrc !== undefined) {
-            reportLog('Video element removed from page', 'warn');
-            lastVideoSrc = undefined;
-            closeAudioContext();
-            return;
-        }
-
-        if (!video) return;
-
-        const currentSrc = video.currentSrc || video.src || null;
-
-        if (!video.dataset.koalaAttached || (lastVideoSrc !== undefined && currentSrc && lastVideoSrc !== currentSrc)) {
-            if (lastVideoSrc !== undefined && currentSrc && lastVideoSrc !== currentSrc) {
-                checkEpisodeTransition();
-            }
-            setupListeners();
-        }
-    }
-
-    const observer = new MutationObserver(() => {
-        const now = Date.now();
-        if (now - lastMutate >= 1000) {
-            checkVideo();
-        } else {
-            if (observerTimeout) clearTimeout(observerTimeout);
-            observerTimeout = setTimeout(checkVideo, 1000 - (now - lastMutate));
-        }
-    });
-    observer.observe(document.documentElement, { childList: true, subtree: true });
-
-    // --- SHARED_HEARTBEAT_INJECT_START ---
-    const HEARTBEAT_INTERVAL_VAL = 15000;
-    // --- SHARED_HEARTBEAT_INJECT_END ---
-
-    // Heartbeat Refactoring (Self-scheduling setTimeout with proactive heartbeat scheduling)
-    let heartbeatTimeout = null;
-    let proactiveHeartbeatTimeout = null;
-    let heartbeatErrorCount = 0;
-
-    function sendHeartbeat() {
-        const video = findVideo();
-        if (!video) return;
-
-        const mediaTitle = (navigator.mediaSession && navigator.mediaSession.metadata) ? navigator.mediaSession.metadata.title : null;
-        chrome.runtime.sendMessage({
-            type: 'HEARTBEAT',
-            payload: {
-                playbackState: video.paused ? 'paused' : 'playing',
-                currentTime: video.currentTime,
-                mediaTitle: mediaTitle,
-                volume: video.volume,
-                muted: video.muted
-            }
-        }).catch(err => {
-            if (err.message.includes('Extension context invalidated')) {
-                heartbeatErrorCount++;
-                if (heartbeatErrorCount === 1) {
-                    reportLog('Extension reloaded. Please refresh the page if sync stops working.', 'warn');
-                }
-                if (heartbeatTimeout) clearTimeout(heartbeatTimeout);
-                if (proactiveHeartbeatTimeout) clearTimeout(proactiveHeartbeatTimeout);
-                observer.disconnect();
-            }
-        });
-    }
-
-    function schedulePeriodicHeartbeat() {
-        if (heartbeatTimeout) clearTimeout(heartbeatTimeout);
-        heartbeatTimeout = setTimeout(() => {
-            sendHeartbeat();
-            schedulePeriodicHeartbeat();
-        }, HEARTBEAT_INTERVAL_VAL);
-    }
-
-    function scheduleProactiveHeartbeat() {
-        if (proactiveHeartbeatTimeout) clearTimeout(proactiveHeartbeatTimeout);
-        proactiveHeartbeatTimeout = setTimeout(() => {
-            sendHeartbeat();
-            schedulePeriodicHeartbeat(); // Reschedules the next periodic check to be exactly 15s from now
-        }, 500); // 500ms stabilization delay
-    }
-
-    // Initial Setup
-    setupListeners();
-
-    // Maintain a persistent keep-alive port connection to prevent background SW suspension
-    let keepAlivePort = null;
-    function connectKeepAlivePort() {
-        try {
-            if (chrome.runtime.id) {
-                keepAlivePort = chrome.runtime.connect({ name: 'keepAlive' });
-                keepAlivePort.onDisconnect.addListener(() => {
-                    keepAlivePort = null;
-                    setTimeout(connectKeepAlivePort, 1000);
-                });
-            }
-        } catch (_e) {
-            // Extension context invalidated or disabled
-        }
-    }
-    connectKeepAlivePort();
-
-    schedulePeriodicHeartbeat();
-
-    // Immediate heartbeat on injection — populate peer data without waiting 15s
-    setTimeout(() => sendHeartbeat(), 300);
-
-    // Episode Auto-Sync: Boot recovery — check if background has an active lobby
-    chrome.runtime.sendMessage({ type: 'CONTENT_BOOT' }, (res) => {
-        if (chrome.runtime.lastError) return;
-        if (res && res.lobbyActive && res.expectedTitle) {
-            reportLog(`Boot: Active lobby detected for "${res.expectedTitle}"`, 'info');
-            startLobbyPoll(res.expectedTitle);
-        }
-    });
-
-    // Host Control Mode: fetch current room mode/role on injection (we may have
-    // been injected after ROOM_DATA already arrived, missing the broadcast).
-    chrome.runtime.sendMessage({ type: 'GET_CONTROL_MODE' }, (res) => {
-        if (chrome.runtime.lastError || !res) return;
-        hcmControlMode = res.controlMode || 'everyone';
-        hcmAmController = !!res.amController;
-        hcmHostPeerId = res.hostPeerId || null;
-        // Re-adopt persisted desync after a page reload so we don't start synced
-        // while background still relays us as "Solo" to the host (split-brain).
-        // Only when we're actually a gated guest — never adopt a stale flag as a
-        // controller or in 'everyone' mode (would self-label "Solo" / ignore commands).
-        if (res.desynced && res.controlMode === 'host-only' && !res.amController && !hcmDesynced) {
-            hcmDesynced = true;
-            hcmShowBadge();
-        }
-    });
-
-    // Pull localized strings for the in-page dialog/badge (English fallback above).
-    chrome.runtime.sendMessage({ type: 'GET_HCM_STRINGS' }, (res) => {
-        if (chrome.runtime.lastError || !res) return;
-        Object.keys(hcmStrings).forEach(k => { if (res[k]) hcmStrings[k] = res[k]; });
-        // If the badge is already showing (early desync), refresh its text in place.
-        // Re-creating the host element nukes the click target mid-poll and can drop a
-        // click that landed between remove() and the re-create (L-4).
-        if (hcmBadgeHost) {
-            const span = hcmBadgeHost.shadowRoot && hcmBadgeHost.shadowRoot.querySelector('span');
-            if (span) span.textContent = '● ' + hcmStrings.badge;
-        }
-    });
-
-})();
+/**

+ * KoalaSync Content Script

+ * Injected into video tabs to control playback and detect events.

+ */

+

+(function() {

+    // Injection Guard: Check if already injected AND context is valid

+    try {

+        if (window.koalaSyncInjected && chrome.runtime.id) {

+            return;

+        }

+    } catch (_e) {

+        // Context invalidated, proceed with re-injection

+    }

+    window.koalaSyncInjected = true;

+

+    // --- SHARED_EVENTS_INJECT_START ---

+    // This block is automatically updated by /scripts/build-extension.js

+    const EVENTS = {

+        PLAY: "play",

+        PAUSE: "pause",

+        SEEK: "seek",

+        FORCE_SYNC_PREPARE: "force_sync_prepare",

+        FORCE_SYNC_ACK: "force_sync_ack",

+        FORCE_SYNC_EXECUTE: "force_sync_execute",

+        PEER_STATUS: "peer_status",

+        EPISODE_LOBBY: "episode_lobby",

+        EPISODE_READY: "episode_ready"

+    };

+    // --- SHARED_EVENTS_INJECT_END ---

+

+    // Suppresses native event reporting after a programmatic action.

+    // Each entry is a per-type timer (key = 'playing'|'paused'|'seek').

+    // While a timer exists, matching native events are consumed and not relayed.

+    // Timers self-clean after 300ms if the native event never fires.

+    let _suppressTimers = {};

+

+    function _setSuppress(state) {

+        if (_suppressTimers[state]) clearTimeout(_suppressTimers[state]);

+        _suppressTimers[state] = setTimeout(() => {

+            delete _suppressTimers[state];

+        }, 300);

+    }

+

+    function _clearSuppress(state) {

+        if (_suppressTimers[state]) {

+            clearTimeout(_suppressTimers[state]);

+            delete _suppressTimers[state];

+        }

+    }

+

+    // --- Seek Relay Filtering ---

+    // Minimum seek delta (seconds) to report. Prevents HLS/DASH buffering micro-seeks

+    // from being relayed to peers as user-initiated seeks.

+    const MIN_SEEK_DELTA = 2.0;

+    let lastReportedSeekTime = null;  // last currentTime we relayed as a SEEK

+    let seekDebounceTimer = null;     // debounce timer for rapid seek events

+    let expectedSeekTime = null;      // strictly track programmatic seeks

+

+    const PAGE_API_SEEK_BRIDGE = 1;
+    let lastDisneyPlusTimelineCandidates = [];
+
+    function hostMatchesUrl(host, url) {
+        const normalized = String(url || '')
+            .replace(/^https?:\/\//i, '')
+            .split('/')[0]
+            .toLowerCase();
+        return normalized && (host === normalized || host.endsWith(`.${normalized}`));
+    }
+
+    function matchesPlayerUrls(urls) {
+        const host = window.location.hostname.toLowerCase();
+        return Array.isArray(urls) && urls.some(url => hostMatchesUrl(host, url));
+    }
+
+    function isDisneyPlusHost() {
+        return matchesPlayerUrls(['disneyplus.com']);
+    }
+
+    function getSeekableRange(video) {
+        try {
+            const ranges = video.seekable;
+            if (!ranges || ranges.length === 0) return null;
+            const current = video.currentTime;
+            let index = ranges.length - 1;
+            if (Number.isFinite(current)) {
+                for (let i = 0; i < ranges.length; i++) {
+                    if (current >= ranges.start(i) && current <= ranges.end(i)) {
+                        index = i;
+                        break;
+                    }
+                }
+            }
+            const start = ranges.start(index);
+            const end = ranges.end(index);
+            if (!Number.isFinite(start) || !Number.isFinite(end) || end <= start) return null;
+            return { start, end, duration: end - start };
+        } catch (_e) {
+            return null;
+        }
+    }
+
+    function parseClockTime(value) {
+        const parts = String(value || '').trim().split(':').map(Number);
+        if (parts.length < 2 || parts.length > 3 || parts.some(n => !Number.isFinite(n))) return null;
+        return parts.length === 2
+            ? parts[0] * 60 + parts[1]
+            : parts[0] * 3600 + parts[1] * 60 + parts[2];
+    }
+
+    function parseTimelineText(text) {
+        const matches = String(text || '').match(/\b\d{1,3}:\d{2}(?::\d{2})?\b/g);
+        if (!matches || matches.length < 2) return null;
+        const current = parseClockTime(matches[0]);
+        const duration = parseClockTime(matches[matches.length - 1]);
+        if (!Number.isFinite(current) || !Number.isFinite(duration) || duration < 60 || current > duration + 5) return null;
+        return { current, duration };
+    }
+
+    function getDisneyPlusUiTimeline() {
+        if (typeof document === 'undefined') return null;
+        const selectors = [
+            '[role="slider"]',
+            '[role="progressbar"]',
+            '[aria-valuenow][aria-valuemax]',
+            '[aria-valuetext]',
+            '[aria-label]',
+            '[data-testid]',
+            '[data-test]',
+            '[class*="time" i]',
+            '[class*="progress" i]',
+            'time',
+            'output',
+            'button',
+            'span',
+            'p',
+            'div'
+        ].join(',');
+        const nodes = Array.from(document.querySelectorAll(selectors)).slice(0, 2000);
+        const textParts = [];
+        const candidates = [];
+        let best = null;
+        let bestScore = -1;
+
+        function considerTimeline(parsed, source, weight = 0) {
+            if (!parsed) return;
+            const score = weight +
+                (parsed.duration >= 20 * 60 ? 200 : 0) +
+                (parsed.current > 0 ? 50 : 0) -
+                Math.abs((parsed.duration / 2) - parsed.current) / 100;
+            candidates.push({ ...parsed, source, score: Math.round(score) });
+            if (score > bestScore) {
+                bestScore = score;
+                best = parsed;
+            }
+        }
+
+        for (const node of nodes) {
+            const now = Number(node.getAttribute?.('aria-valuenow') ?? node.value);
+            const max = Number(node.getAttribute?.('aria-valuemax') ?? node.max);
+            if (Number.isFinite(now) && Number.isFinite(max) && max >= 60 && now >= 0 && now <= max + 5) {
+                considerTimeline({ current: now, duration: max }, 'aria-value', 300);
+            }
+
+            for (const attr of ['aria-valuetext', 'aria-label', 'title', 'data-testid', 'data-test']) {
+                const parsed = parseTimelineText(node.getAttribute?.(attr));
+                considerTimeline(parsed, attr, 200);
+            }
+
+            const text = String(node.textContent || '').trim();
+            if (text && text.length < 200) {
+                const parsed = parseTimelineText(text);
+                considerTimeline(parsed, 'text', 100);
+                textParts.push(text);
+            }
+        }
+
+        considerTimeline(parseTimelineText(textParts.join(' ')), 'combined-text', 25);
+        lastDisneyPlusTimelineCandidates = candidates
+            .sort((a, b) => b.score - a.score)
+            .slice(0, 8)
+            .map(({ source, current, duration }) => ({ source, current, duration }));
+        return best;
+    }
+
+    function getElementLabel(el) {
+        return [
+            el.getAttribute?.('aria-label'),
+            el.getAttribute?.('title'),
+            el.getAttribute?.('data-testid'),
+            el.getAttribute?.('data-test'),
+            el.textContent
+        ].filter(Boolean).join(' ').replace(/\s+/g, ' ').trim();
+    }
+
+    function getDisneyPlusSeekButtonLabels() {
+        if (!isDisneyPlusHost() || typeof document === 'undefined') return [];
+        return Array.from(document.querySelectorAll('button,[role="button"]'))
+            .map(getElementLabel)
+            .filter(Boolean)
+            .slice(0, 20);
+    }
+
+    function clickDisneyPlusRelativeSeek(delta) {
+        if (!isDisneyPlusHost() || !Number.isFinite(delta) || Math.abs(delta) < 1 || typeof document === 'undefined') return false;
+        const backward = delta < 0;
+        const candidates = Array.from(document.querySelectorAll('button,[role="button"]'));
+        const backRe = /rewind|backward|back\b|zurück|zurueck|rück|rueck|retour|recul|retroced|atrás|voltar|indietro/i;
+        const forwardRe = /forward|ahead|skip|vorwärts|vorwaerts|vorsp|weiter|avancer|adelant|avançar|avancar|avanti/i;
+        const timeRe = /\b(5|10|15|30)\b|sec|sek|second/i;
+
+        const button = candidates.find(btn => {
+            const label = getElementLabel(btn);
+            const matchesDirection = backward ? backRe.test(label) : forwardRe.test(label);
+            return matchesDirection && timeRe.test(label);
+        }) || candidates.find(btn => {
+            const label = getElementLabel(btn);
+            return backward ? backRe.test(label) : forwardRe.test(label);
+        });
+
+        if (!button || typeof button.click !== 'function') return false;
+        const clicks = Math.max(1, Math.min(12, Math.round(Math.abs(delta) / 10)));
+        for (let i = 0; i < clicks; i++) {
+            setTimeout(() => button.click(), i * 60);
+        }
+        return true;
+    }
+
+    function getDisneyPlusTimeline(video) {
+        if (!isDisneyPlusHost()) return null;
+        const range = getSeekableRange(video);
+        const current = video.currentTime;
+        const ui = getDisneyPlusUiTimeline();
+
+        if (ui) {
+            let nativeScale = 1;
+            if (range && range.duration > ui.duration * 1.2) {
+                nativeScale = range.duration / ui.duration;
+            } else if (Number.isFinite(current) && ui.current > 1 && current > ui.current * 1.5) {
+                nativeScale = current / ui.current;
+            }
+            const nativeStart = Number.isFinite(current)
+                ? current - ui.current * nativeScale
+                : (range ? range.start : 0);
+            return {
+                ...(range || {}),
+                current: ui.current,
+                duration: ui.duration,
+                nativeScale,
+                nativeStart
+            };
+        }
+
+        if (!range || range.start < 1 || range.duration < 60) return null;
+        if (!Number.isFinite(current) || current < range.start - 1 || current > range.end + 1) return null;
+        return { ...range, current: Math.max(0, current - range.start), nativeScale: 1, nativeStart: range.start };
+    }
+
+    // Site-specific player exceptions live here. The default HTML5 path stays below.
+    function getSiteQuirkAdapters() {
+        return [{
+            name: 'disneyplus-timeline-and-buttons',
+            key: 'disneyPlus',
+            urls: ['disneyplus.com'],
+            matches() { return matchesPlayerUrls(this.urls); },
+            getTimeline: getDisneyPlusTimeline,
+            clickRelativeSeek: clickDisneyPlusRelativeSeek,
+            getDebug(video) {
+                return {
+                    name: this.name,
+                    key: 'disneyPlus',
+                    urls: this.urls,
+                    timeline: getDisneyPlusTimeline(video),
+                    timelineCandidates: lastDisneyPlusTimelineCandidates,
+                    seekButtons: getDisneyPlusSeekButtonLabels()
+                };
+            }
+        }];
+    }
+
+    function getActiveSiteQuirk() {
+        return getSiteQuirkAdapters().find(adapter => adapter.matches()) || null;
+    }
+
+    function getSiteQuirkTimeline(video) {
+        const adapter = getActiveSiteQuirk();
+        return adapter ? adapter.getTimeline(video) : null;
+    }
+
+    function getSiteQuirkDebug(video) {
+        const adapter = getActiveSiteQuirk();
+        return adapter ? adapter.getDebug(video) : null;
+    }
+
+    function getSyncCurrentTime(video) {
+        const current = video.currentTime;
+        if (!Number.isFinite(current)) return null;
+        const siteTimeline = getSiteQuirkTimeline(video);
+        return siteTimeline ? siteTimeline.current : current;
+    }
+
+    function getSyncDuration(video) {
+        const siteTimeline = getSiteQuirkTimeline(video);
+        if (siteTimeline) return siteTimeline.duration;
+        return Number.isFinite(video.duration) && video.duration > 0 ? video.duration : 0;
+    }
+
+    function toNativeSeekTime(video, targetTime) {
+        if (!Number.isFinite(targetTime)) return targetTime;
+        const siteTimeline = getSiteQuirkTimeline(video);
+        if (!siteTimeline) return targetTime;
+        const nativeTarget = siteTimeline.nativeStart + targetTime * siteTimeline.nativeScale;
+        const max = Number.isFinite(siteTimeline.end) ? siteTimeline.end : nativeTarget;
+        const min = Number.isFinite(siteTimeline.start) ? siteTimeline.start : 0;
+        return Math.max(min, Math.min(max, nativeTarget));
+    }
+
+    function shouldUsePageApiSeek() {
+        return window.KOALA_PAGE_API_SEEK_ENABLED === true &&
+            typeof window.koalaFindPageApiSeekProvider === 'function' &&
+            !!window.koalaFindPageApiSeekProvider(window.location.hostname);
+    }
+
+    function seekVideo(video, targetTime, relativeDelta = null) {
+        const siteQuirk = getActiveSiteQuirk();
+        if (siteQuirk && !siteQuirk.getTimeline(video) && siteQuirk.clickRelativeSeek(relativeDelta)) {
+            expectedSeekTime = null;
+            return;
+        }
+        const nativeTargetTime = toNativeSeekTime(video, targetTime);
+        expectedSeekTime = targetTime;
+        if (shouldUsePageApiSeek()) {
+            window.postMessage({ __koalaPageApiSeek: PAGE_API_SEEK_BRIDGE, kind: 'seek', time: targetTime }, '*');
+            return;
+        }
+        video.currentTime = nativeTargetTime;
+    }
+

+    // --- Play/Pause Coalescing (leading + trailing) ---

+    // Media players (HLS/DASH, ad insertion, ABR/quality switches, source swaps,

+    // page teardown) fire bursts of native play/pause events within a few hundred

+    // ms. Relaying each as a distinct command spams peers and the relay.

+    //

+    // Strategy: emit the FIRST event immediately (leading edge → a deliberate

+    // single play/pause has zero added latency), then hold a short window. If

+    // more play/pause events arrive during the window it's a burst — we suppress

+    // the intermediate churn and, once it settles, emit the FINAL state on the

+    // trailing edge.

+    //

+    // We deliberately do NOT dedup the trailing send against the leading one. A

+    // remote play/pause may be applied mid-window (e.g. I pause, peer plays, I

+    // pause again within 150ms): the settled state then equals my last *sent*

+    // state yet is a genuine change versus the now-shared state — suppressing it

+    // would desync. Re-sending an unchanged state is a harmless no-op on peers,

+    // so re-sending is always the safe choice. Echo-suppression and seek-flush

+    // still run synchronously on event arrival (see reportEvent) — only the

+    // network emit is governed here.

+    const PLAY_PAUSE_COALESCE_MS = 150;

+    let playPauseCoalesceTimer = null;  // non-null = a coalescing window is open

+    let pendingPlayPauseAction = null;  // last play/pause seen during the window, awaiting trailing flush

+

+    // --- Episode Auto-Sync State ---

+    let lastKnownMediaTitle = null;

+    let episodeTransitionDebounce = null;

+    let _pendingLobbyTitle = null; // Title we're waiting to match (from remote lobby)

+    let lobbyPollTimer = null;

+    let _autoSyncEnabled = true; // Cached setting, updated via storage.onChanged

+    let _audioSettings = null;

+    let _audioProcessingAllowed = true;

+

+    // Cache the autoSyncNextEpisode setting (local-only; never read from sync)

+    chrome.storage.local.get(['autoSyncNextEpisode', 'audioSettings'], (data) => {

+        _autoSyncEnabled = data.autoSyncNextEpisode !== false;

+        _audioSettings = mergeAudioSettings(data.audioSettings);

+        const video = findVideo();

+        if (video && _audioProcessingAllowed) applyAudioSettings(video, _audioSettings);

+    });

+    chrome.storage.onChanged.addListener((changes, area) => {

+        if (area === 'local' && changes.autoSyncNextEpisode) {

+            _autoSyncEnabled = changes.autoSyncNextEpisode.newValue !== false;

+        }

+    });

+

+    // --- Host Control Mode (guest-side) ---

+    // When a room is in 'host-only' mode and we're a guest, a deliberate local

+    // pause/seek must not drive the room (background/server already drop it). Here

+    // we handle the *local* UX: snap back to the host's position, or — if the user

+    // really wants to — let them go solo (desync) with a resync escape hatch.

+    let hcmControlMode = 'everyone';   // mirror of room control mode

+    let hcmAmController = false;        // are we allowed to drive (owner or co-host)?

+    let hcmHostPeerId = null;          // last known host peerId (room/host identity)

+    let hcmDesynced = false;           // user chose to go solo

+    let hcmSnapBackCooldownUntil = 0;  // suppress re-trigger right after a snap-back

+    let hcmDeferredSnapPending = false; // a buffer-aware snap-back is waiting for readiness

+    let hcmLastUserGestureAt = 0;      // for deliberate-vs-involuntary classification

+    let hcmBufferingUntil = 0;         // set on 'waiting' — buffering grace window

+    let hcmDialogTimer = null;         // 8s auto-stay timer — cleared on dialog replace (H-4)

+    // Localized strings for the in-page dialog/badge (content has no i18n loader;

+    // background resolves them via GET_HCM_STRINGS on init). English fallbacks here.

+    const hcmStrings = {

+        title:  'KoalaSync · Host controls this room',

+        body:   'Only the host can control playback in this room. Keep watching together, or watch on your own?',

+        stay:   'Stay in sync',

+        solo:   'Watch on my own',

+        badge:  'Watching on your own',

+        resync: 'Resync'

+    };

+    const HCM_USER_GESTURE_MS = 1000;

+    const HCM_BUFFERING_GRACE_MS = 1500;

+    const HCM_SNAP_BACK_COOLDOWN_MS = 1000;

+    const HCM_BUFFER_WAIT_MS = 8000;   // cap on waiting for a buffering player before snapping anyway

+

+    // Track genuine user input so we can tell a deliberate pause/seek from a

+    // player-/browser-initiated one. Capturing + passive so we never interfere.

+    const _hcmGesture = () => { hcmLastUserGestureAt = Date.now(); };

+    document.addEventListener('keydown', _hcmGesture, { capture: true, passive: true });

+    document.addEventListener('pointerdown', _hcmGesture, { capture: true, passive: true });

+

+    function hcmIsGuestGated() {

+        return hcmControlMode === 'host-only' && !hcmAmController;

+    }

+

+    // EC-9 intent classifier: only a *clearly deliberate* guest action triggers the

+    // dialog/snap-back. Anything that smells involuntary (buffering, seeking, tab

+    // refocus, no recent gesture) is treated as involuntary. Bias intentional —

+    // in host-only the guest never broadcasts anyway, so this only tunes UX.

+    function hcmClassifyIntent() {

+        const video = findVideo();

+        if (!video) return 'involuntary';

+        if (hcmIsLive(video)) return 'live';                   // EC-15: degrade, don't gate

+        if (video.readyState < 3) return 'involuntary';        // buffering / not enough data

+        if (video.seeking) return 'involuntary';

+        if (Date.now() < hcmBufferingUntil) return 'involuntary';

+        if (Date.now() < visibilityGraceUntil) return 'involuntary';

+        if (Date.now() - hcmLastUserGestureAt > HCM_USER_GESTURE_MS) return 'involuntary';

+        return 'deliberate';

+    }

+

+    // Live detection (EC-15 + DVR). Pure live reports duration Infinity/NaN. Live-DVR

+    // (Twitch/YouTube-live with rewind) reports a *finite, sliding* duration — its

+    // seekable window doesn't start at 0, which we use as the DVR signal.

+    function hcmIsLive(video) {

+        // Don't trust duration before metadata has loaded (readyState >= 1) —

+        // otherwise pre-loaded videos report NaN and get misclassified as live,

+        // which suppresses the desync dialog (L-2).

+        if (video.readyState < 1) return false;

+        if (!Number.isFinite(video.duration)) return true;

+        try {

+            const s = video.seekable;

+            if (s && s.length > 0 && s.start(0) > 1) return true; // sliding DVR window

+        } catch (_e) { /* seekable may throw if empty */ }

+        return false;

+    }

+

+    // Snap the local player back to the host's current position/state.

+    function hcmSnapBackToHost(target) {

+        if (hcmDesynced) return; // user opted out — never yank them back automatically

+        hcmSnapBackCooldownUntil = Date.now() + HCM_SNAP_BACK_COOLDOWN_MS;

+        const video = findVideo();

+        if (!video) return;

+        if (target && Number.isFinite(target.targetTime)) {

+            tryMediaAction(EVENTS.SEEK, { targetTime: target.targetTime });

+        }

+        // Adopt the host's play/pause state — but ONLY if we actually know it.

+        // Defaulting to PLAY when the state is unknown would auto-resume a paused

+        // video against the host's real state (H-1).

+        if (target && target.playbackState === 'paused') {

+            tryMediaAction(EVENTS.PAUSE);

+        } else if (target && target.playbackState === 'playing') {

+            tryMediaAction(EVENTS.PLAY);

+        }

+        reportLog('Host-only: snapped back to host position', 'info');

+    }

+

+    // Resync to the host's current position, retrying briefly if the host's state

+    // isn't known yet (e.g. they just paused and no heartbeat has propagated) —

+    // otherwise the request is a silent no-op and the user thinks they're synced

+    // when they aren't. Shared by the dialog's "Stay in sync" and the Resync badge.

+    function hcmRequestHostSyncWithRetry() {

+        let attempts = 0;

+        const tryOnce = () => {

+            chrome.runtime.sendMessage({ type: 'REQUEST_HOST_SYNC' }, (res) => {

+                if (chrome.runtime.lastError || !res || !res.target) {

+                    if (++attempts < 5) setTimeout(tryOnce, 250);

+                    else reportLog('Host-only: resync requested but host state unavailable', 'warn');

+                    return;

+                }

+                hcmSnapBackToHost(res.target);

+            });

+        };

+        tryOnce();

+    }

+

+    // Buffer-aware snap-back (#3). An involuntary pause/seek often coincides with the

+    // player buffering — and a player can't actually play while it's stalled. Snapping

+    // immediately just fights the buffer (seek → re-buffer → another pause → …), which

+    // looks like stutter. Instead: if the player isn't ready, wait until it can play

+    // (readyState>=3, not seeking), then snap ONCE to the host's *current* position

+    // (re-queried, since the captured target may be stale by the time buffering ends).

+    // Player-agnostic on purpose — we can't enumerate every site, so this must be safe

+    // regardless of whether a given player fires 'pause' or only 'waiting'.

+    function hcmDeferredSnapBack() {

+        if (hcmDeferredSnapPending) return; // already waiting — don't stack polls

+        hcmDeferredSnapPending = true;

+        const deadline = Date.now() + HCM_BUFFER_WAIT_MS;

+        const poll = () => {

+            // Abort if the reason to snap is gone: user went solo, we're no longer a

+            // gated guest, or the video vanished.

+            if (hcmDesynced || !hcmIsGuestGated()) { hcmDeferredSnapPending = false; return; }

+            const video = findVideo();

+            const ready = video && video.readyState >= 3 && !video.seeking;

+            if (ready || Date.now() >= deadline) {

+                hcmDeferredSnapPending = false;

+                hcmRequestHostSyncWithRetry(); // fresh host position + snap once

+                return;

+            }

+            setTimeout(poll, 300);

+        };

+        poll();

+    }

+

+    // Entry point: background told us our local action was blocked in host-only.

+    function hcmHandleBlocked(action, target) {

+        // HOST_BLOCKED is only ever sent to a gated guest (background verifies

+        // host-only + !host before sending), so it's authoritative. Adopt the

+        // role/mode from it in case our CONTROL_MODE broadcast hasn't landed yet

+        // (join race, EC-5) — otherwise we'd miss the dialog/snap-back.

+        hcmControlMode = 'host-only';

+        hcmAmController = false;

+        if (hcmDesynced) return; // already solo, nothing to do

+

+        const intent = hcmClassifyIntent();

+        if (intent === 'live') return;          // EC-15: leave the guest alone on live

+        if (intent === 'involuntary') {

+            // EC-4 loop guard: only the silent auto snap-back is suppressed by the

+            // cooldown — the deliberate dialog path below must still go through,

+            // otherwise a second deliberate pause inside the cooldown window leaves

+            // the user stuck paused with no UI (M-3).

+            if (Date.now() < hcmSnapBackCooldownUntil || hcmDeferredSnapPending) return;

+            // Buffering/ads/throttle — silently re-sync, no dialog spam.

+            const video = findVideo();

+            if (video && video.readyState >= 3 && !video.seeking) {

+                // Ready now → snap immediately. Use the captured target if it's

+                // usable, otherwise re-query+retry (host state may not be known yet)

+                // so we never leave the guest silently stuck (consistent with the

+                // deferred and "Stay in sync" paths).

+                if (target && Number.isFinite(target.targetTime)) hcmSnapBackToHost(target);

+                else hcmRequestHostSyncWithRetry();

+            } else {

+                hcmDeferredSnapBack();             // buffering → wait for ready, then snap once (#3)

+            }

+            return;

+        }

+        // Deliberate: offer the choice (Teleparty-style), default = snap back.

+        hcmShowDesyncDialog(action, target);

+    }

+

+    // --- In-page UI (dialog + persistent desync badge) ---

+    // Built with the DOM API (CSSOM .style is CSP-safe; inline style="" in innerHTML

+    // is stripped by strict style-src on Netflix/YouTube/Disney+). Hosted in a

+    // Shadow DOM so the page's CSS can't restyle or hide our controls.

+    let hcmDialogHost = null;  // shadow host element for the dialog

+    let hcmBadgeHost = null;   // shadow host element for the persistent badge

+    let hcmBadgePending = false;  // retry flag for early-injection badge creation (L-4)

+

+    function hcmEl(tag, css, text) {

+        const el = document.createElement(tag);

+        if (css) el.style.cssText = css;        // CSSOM assignment — not gated by CSP

+        if (text != null) el.textContent = text;

+        return el;

+    }

+

+    function hcmRemoveDialog() {

+        // Cancel any pending auto-stay timer so a replaced dialog's stale closure

+        // can't later remove its successor / snap to an outdated target (H-4).

+        if (hcmDialogTimer) { clearTimeout(hcmDialogTimer); hcmDialogTimer = null; }

+        if (hcmDialogHost) { hcmDialogHost.remove(); hcmDialogHost = null; }

+    }

+

+    function hcmShowDesyncDialog(action, target) {

+        if (!document.body) { hcmSnapBackToHost(target); return; }

+        hcmRemoveDialog();

+        const host = hcmEl('div', 'all:initial');

+        const root = host.attachShadow({ mode: 'open' });

+

+        const wrap = hcmEl('div', 'position:fixed;z-index:2147483647;left:50%;bottom:32px;transform:translateX(-50%);background:#1f2937;color:#f9fafb;font:14px/1.4 system-ui,sans-serif;padding:16px 18px;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.45);max-width:360px;border:1px solid #374151');

+        wrap.setAttribute('role', 'dialog');

+        const title = hcmEl('div', 'font-weight:600;margin-bottom:6px', hcmStrings.title);

+        const body = hcmEl('div', 'margin-bottom:12px;color:#d1d5db', hcmStrings.body);

+        const btnRow = hcmEl('div', 'display:flex;gap:8px;justify-content:flex-end');

+        const soloBtn = hcmEl('button', 'background:#374151;color:#f9fafb;border:0;padding:8px 12px;border-radius:8px;cursor:pointer', hcmStrings.solo);

+        const stayBtn = hcmEl('button', 'background:#10b981;color:#062a20;border:0;padding:8px 12px;border-radius:8px;cursor:pointer;font-weight:600', hcmStrings.stay);

+        btnRow.append(soloBtn, stayBtn);

+        wrap.append(title, body, btnRow);

+        root.appendChild(wrap);

+        document.body.appendChild(host);

+        hcmDialogHost = host;

+

+        let settled = false;

+        // Re-query the host's current position on click instead of using the

+        // potentially stale target captured at HOST_BLOCKED time (M-1).

+        const stay = () => {

+            if (settled) return; settled = true; hcmRemoveDialog();

+            hcmRequestHostSyncWithRetry();

+        };

+        const solo = () => { if (settled) return; settled = true; hcmRemoveDialog(); hcmEnterDesync(); };

+        stayBtn.addEventListener('click', stay);

+        soloBtn.addEventListener('click', solo);

+        // EC-18: if the user ignores the prompt, default to staying in sync.

+        hcmDialogTimer = setTimeout(() => { if (!settled) stay(); }, 8000);

+    }

+

+    function hcmEnterDesync() {

+        hcmDesynced = true;

+        reportLog('Host-only: you chose to watch on your own (desynced)', 'warn');

+        // Notify background so it can relay our desynced state to the host via

+        // heartbeats — the host's UI then knows we're not following commands

+        // instead of appearing silently un-ACK'd.

+        chrome.runtime.sendMessage({ type: 'HCM_DESYNC_STATE', desynced: true }).catch(() => {});

+        hcmShowBadge();

+    }

+

+    function hcmExitDesync() {

+        const wasDesynced = hcmDesynced;

+        hcmDesynced = false;

+        hcmRemoveBadge();

+        if (wasDesynced) {

+            chrome.runtime.sendMessage({ type: 'HCM_DESYNC_STATE', desynced: false }).catch(() => {});

+        }

+        // Resync to the host's current position (retries if host state not yet known).

+        hcmRequestHostSyncWithRetry();

+        reportLog('Host-only: resynced with the host', 'info');

+    }

+

+    function hcmShowBadge() {

+        if (hcmBadgeHost) return;

+        if (!document.body) {

+            // Body not ready yet (very early injection). Defer until DOMReady,

+            // otherwise the desynced user silently never sees the badge (L-4).

+            if (!hcmBadgePending) {

+                hcmBadgePending = true;

+                const retry = () => {

+                    hcmBadgePending = false;

+                    if (hcmDesynced && !hcmBadgeHost) hcmShowBadge();

+                };

+                if (document.readyState === 'loading') {

+                    document.addEventListener('DOMContentLoaded', retry, { once: true });

+                } else {

+                    setTimeout(retry, 50);

+                }

+            }

+            return;

+        }

+        const host = hcmEl('div', 'all:initial');

+        const root = host.attachShadow({ mode: 'open' });

+        const b = hcmEl('div', 'position:fixed;z-index:2147483646;right:16px;bottom:16px;background:#b45309;color:#fff;font:13px/1.3 system-ui,sans-serif;padding:8px 12px;border-radius:10px;box-shadow:0 6px 20px rgba(0,0,0,.4);cursor:pointer;display:flex;align-items:center;gap:8px');

+        b.append(hcmEl('span', null, '● ' + hcmStrings.badge), hcmEl('span', 'text-decoration:underline', hcmStrings.resync));

+        b.addEventListener('click', hcmExitDesync);

+        root.appendChild(b);

+        document.body.appendChild(host);

+        hcmBadgeHost = host;

+    }

+

+    function hcmRemoveBadge() {

+        if (hcmBadgeHost) { hcmBadgeHost.remove(); hcmBadgeHost = null; }

+    }

+

+    function hcmReset() {

+        const wasDesynced = hcmDesynced;

+        hcmDesynced = false;

+        hcmDeferredSnapPending = false;

+        hcmSnapBackCooldownUntil = 0; // don't let a stale cooldown swallow the next snap-back

+        hcmBufferingUntil = 0;

+        hcmRemoveDialog();

+        hcmRemoveBadge();

+        // If we were desynced, notify background so it stops reporting us as

+        // desynced in heartbeats (otherwise the host's UI keeps showing the

+        // stale Solo badge until the next state change).

+        if (wasDesynced) {

+            chrome.runtime.sendMessage({ type: 'HCM_DESYNC_STATE', desynced: false }).catch(() => {});

+        }

+    }

+

+    function reportLog(message, level = 'info') {

+        chrome.runtime.sendMessage({ type: 'LOG', message, level }).catch(() => {});

+    }

+

+    // --- Helper: find the best video element on the page ---

+    // Prefers larger, visible videos over tiny preview/trailer elements.

+    function findVideo(root = document) {

+        const candidates = Array.from(root.querySelectorAll('video'));

+

+        // Scan likely media hosts even when light-DOM videos exist; many players

+        // expose a tiny preview/ad video outside Shadow DOM and the real player inside.

+        const potentialHosts = root.querySelectorAll('[id*="player" i], [class*="player" i], [id*="video" i], [class*="video" i], [id*="media" i], [class*="media" i], [id*="stream" i], [class*="stream" i], ytd-player, netflix-player, emby-player, jellyfin-player, video-player');

+        for (const el of potentialHosts) {

+            if (el.shadowRoot) {

+                const found = findVideo(el.shadowRoot);

+                if (found) candidates.push(found);

+            }

+        }

+

+        if (candidates.length === 0) return null;

+

+        // Multiple videos found → pick the best one

+        if (candidates.length === 1) return candidates[0];

+

+        let best = null;

+        let bestScore = -1;

+        for (const v of candidates) {

+            if (v.tagName !== 'VIDEO') continue;

+            // Score: visible area + bonus for unmuted + bonus for longer duration

+            const area = (v.videoWidth || v.offsetWidth || 0) * (v.videoHeight || v.offsetHeight || 0);

+            const unmutedBonus = v.muted ? 0 : 100000;

+            const durationBonus = (v.duration && isFinite(v.duration) ? v.duration : 0) * 100;

+            const score = area + unmutedBonus + durationBonus;

+            if (score > bestScore) {

+                bestScore = score;

+                best = v;

+            }

+        }

+        return best;

+    }

+

+    // --- Audio Processing Module ---

+    const AUDIO_PRESETS = {

+        recommended: { threshold: -24, ratio: 8, attack: 0.010, release: 0.300, knee: 15 },

+        dynamicRange: { threshold: -18, ratio: 4, attack: 0.020, release: 0.200, knee: 10 },

+        vocalEnhancement: { threshold: -12, ratio: 3, attack: 0.015, release: 0.150, knee: 5 },

+        smooth: { threshold: -30, ratio: 1.5, attack: 0.030, release: 0.250, knee: 20 },

+        custom: { threshold: -24, ratio: 12, attack: 0.003, release: 0.250, knee: 30 }

+    };

+    const DEFAULT_AUDIO_SETTINGS = {

+        enabled: false,

+        compressor: {

+            enabled: false,

+            preset: 'recommended',

+            customParams: { ...AUDIO_PRESETS.custom }

+        }

+    };

+    let audioCtx = null;

+    let audioChains = new WeakMap();

+    let currentAudioVideo = null;

+

+    function mergeAudioSettings(settings = {}) {

+        const safeSettings = settings && typeof settings === 'object' ? settings : {};

+        return {

+            ...DEFAULT_AUDIO_SETTINGS,

+            ...safeSettings,

+            compressor: {

+                ...DEFAULT_AUDIO_SETTINGS.compressor,

+                ...(safeSettings.compressor || {}),

+                customParams: {

+                    ...DEFAULT_AUDIO_SETTINGS.compressor.customParams,

+                    ...(safeSettings.compressor?.customParams || {})

+                }

+            }

+        };

+    }

+

+    function initAudioContext() {

+        if (!audioCtx) {

+            try {

+                const AudioContextClass = window.AudioContext || window.webkitAudioContext;

+                if (!AudioContextClass) return null;

+                audioCtx = new AudioContextClass({ latencyHint: 'interactive' });

+            } catch (e) {

+                reportLog(`Audio Processing unavailable: ${e.message}`, 'warn');

+                return null;

+            }

+        }

+        if (audioCtx.state === 'suspended') {

+            audioCtx.resume().catch(() => { reportLog('AudioContext resume failed - browser may need page interaction first', 'warn'); });

+        }

+        return audioCtx;

+    }

+

+    function closeAudioContext() {

+        if (audioCtx) {

+            audioCtx.close().catch(() => {});

+            audioCtx = null;

+        }

+        audioChains = new WeakMap();

+        currentAudioVideo = null;

+    }

+

+    function setupAudioChain(videoEl) {

+        if (audioChains.has(videoEl)) return audioChains.get(videoEl);

+        const ctx = initAudioContext();

+        if (!ctx) return null;

+

+        try {

+            const src = ctx.createMediaElementSource(videoEl);

+            const compressor = ctx.createDynamicsCompressor();

+            const dryGain = ctx.createGain();

+            const compGain = ctx.createGain();

+

+            src.connect(dryGain);

+            dryGain.connect(ctx.destination);

+            src.connect(compressor);

+            compressor.connect(compGain);

+            compGain.connect(ctx.destination);

+

+            dryGain.gain.value = 1;

+            compGain.gain.value = 0;

+

+            const chain = { compressor, dryGain, compGain, active: false };

+            audioChains.set(videoEl, chain);

+            currentAudioVideo = videoEl;

+            return chain;

+        } catch (e) {

+            reportLog(`Audio Processing setup failed: ${e.message}`, 'warn');

+            return null;

+        }

+    }

+

+    function rampGain(node, value, t) {

+        const current = node.gain.value;

+        node.gain.cancelScheduledValues(t);

+        node.gain.setValueAtTime(current, t);

+        node.gain.linearRampToValueAtTime(value, t + 0.04);

+    }

+

+    function applyAudioBypass(videoEl) {

+        const chain = audioChains.get(videoEl);

+        if (!chain || !chain.active) return;

+        const t = chain.dryGain.context.currentTime;

+        rampGain(chain.dryGain, 1, t);

+        rampGain(chain.compGain, 0, t);

+        chain.active = false;

+        reportLog('Audio compressor disabled', 'info');

+    }

+

+    function bypassCurrentAudioProcessing() {

+        if (currentAudioVideo) applyAudioBypass(currentAudioVideo);

+    }

+

+    function applyAudioSettings(videoEl, settings) {

+        const mergedSettings = mergeAudioSettings(settings);

+        if (!mergedSettings.enabled || !mergedSettings.compressor?.enabled) {

+            applyAudioBypass(videoEl);

+            return;

+        }

+

+        const chain = setupAudioChain(videoEl);

+        if (!chain) return;

+

+        const cSettings = mergedSettings.compressor;

+        const params = cSettings.preset === 'custom'

+            ? cSettings.customParams

+            : AUDIO_PRESETS[cSettings.preset] || AUDIO_PRESETS.recommended;

+

+        chain.compressor.threshold.value = params.threshold ?? -24;

+        chain.compressor.knee.value = params.knee ?? 15;

+        chain.compressor.ratio.value = params.ratio ?? 8;

+        chain.compressor.attack.value = params.attack ?? 0.010;

+        chain.compressor.release.value = params.release ?? 0.300;

+

+        if (!chain.active) {

+            const t = chain.dryGain.context.currentTime;

+            rampGain(chain.dryGain, 0, t);

+            rampGain(chain.compGain, 1, t);

+            chain.active = true;

+            reportLog('Audio compressor enabled', 'info');

+        }

+    }

+

+    // --- Episode Auto-Sync: Detection ---

+    function getMediaTitle() {

+        return (navigator.mediaSession && navigator.mediaSession.metadata)

+            ? navigator.mediaSession.metadata.title

+            : null;

+    }

+

+    // Extract a canonical episode identifier from a title string.

+    // Handles: S01E01, S1E1, S01 - E01, Season 1 Episode 1, "Folge 5", "Episode 5", "Ep. 5", "#5"

+    // Returns null if no episode pattern found.

+    // --- SHARED_EPISODE_UTILS_INJECT_START ---

+    // This block is automatically replaced by /scripts/build-extension.js

+    function extractEpisodeId(title) {

+        if (!title || typeof title !== 'string') return null;

+        const se = title.match(/S(?:eason\s*)?(\d+)[^a-zA-Z0-9]*E(?:pisode\s*)?(\d+)/i);

+        if (se) return `S${String(se[1]).padStart(2, '0')}E${String(se[2]).padStart(2, '0')}`;

+        const ep = title.match(/(?:Episode|Folge|Ep\.?|#)\s*(\d+)/i);

+        if (ep) return `EP${String(ep[1]).padStart(3, '0')}`;

+        return null;

+    }

+

+    function sameEpisode(titleA, titleB) {

+        if (!titleA && !titleB) return true;

+        if (!titleA || !titleB) return false;

+        const idA = extractEpisodeId(titleA);

+        const idB = extractEpisodeId(titleB);

+        if (idA && idB) return idA === idB;

+        if (idA || idB) return false;

+        return titleA === titleB;

+    }

+    // --- SHARED_EPISODE_UTILS_INJECT_END ---

+

+    // Returns true only when we are CERTAIN the episodes differ.

+    // Permissive: only blocks if BOTH titles have parseable IDs AND they differ.

+    // Films, music, unparseable titles always pass through.

+    function isDifferentEpisode(titleA, titleB) {

+        if (!titleA || !titleB) return false; // Unknown → allow

+        const idA = extractEpisodeId(titleA);

+        const idB = extractEpisodeId(titleB);

+        if (!idA || !idB) return false; // At least one unparseable → allow

+        return idA !== idB;             // Both parseable → only block if different

+    }

+

+    function checkEpisodeTransition() {

+        const currentTitle = getMediaTitle();

+        const video = findVideo();

+

+        // Only trigger if: we had a previous title, the title changed,

+        // a video exists, and we're near the start of new content.

+        if (lastKnownMediaTitle && currentTitle

+            && !sameEpisode(currentTitle, lastKnownMediaTitle)

+            && video

+            && video.currentTime < 5

+            && video.readyState >= 1) {

+            onEpisodeTransition(currentTitle);

+        }

+

+        // Always track the latest known title

+        if (currentTitle) lastKnownMediaTitle = currentTitle;

+    }

+

+    function onEpisodeTransition(newTitle) {

+        // Debounce: prevent duplicate fires from multiple signals

+        if (episodeTransitionDebounce) return;

+        episodeTransitionDebounce = setTimeout(() => {

+            episodeTransitionDebounce = null;

+        }, 2000);

+

+        reportLog(`Episode transition detected: "${newTitle}"`, 'info');

+

+        // EC-12: a new episode dissolves any solo/desync state — the guest rejoins

+        // the room for the fresh content rather than staying stuck on the old one.

+        if (hcmDesynced) hcmReset();

+

+        // Do NOT pause here. We notify background.js first.

+        // Background checks the setting; if enabled it creates a lobby

+        // and sends back PAUSE_FOR_LOBBY so we only freeze if the feature is on.

+        chrome.runtime.sendMessage({

+            type: 'EPISODE_CHANGED',

+            payload: { newTitle }

+        }).catch(() => {});

+    }

+

+    function checkAndReportLobbyReady(expectedTitle) {

+        const video = findVideo();

+        const currentTitle = getMediaTitle();

+

+        if (video && currentTitle && sameEpisode(currentTitle, expectedTitle)

+            && video.currentTime < 5 && video.readyState >= 1) {

+            // Match! Pause at start and report ready.

+            if (!video.paused) {

+                _setSuppress('paused');

+                video.pause();

+            }

+            stopLobbyPoll();

+            chrome.runtime.sendMessage({

+                type: 'EPISODE_READY_LOCAL',

+                payload: { title: currentTitle }

+            }).catch(() => {});

+            reportLog(`Episode lobby: Ready for "${currentTitle}"`, 'success');

+            return true;

+        }

+        return false;

+    }

+

+    function startLobbyPoll(expectedTitle) {

+        stopLobbyPoll();

+        _pendingLobbyTitle = expectedTitle;

+

+        // NOTE: Do NOT pause here. Three callers reach this function:

+        // 1. PAUSE_FOR_LOBBY (initiator): already paused by that handler before calling us.

+        // 2. EPISODE_LOBBY (non-initiator): peer may still be on the PREVIOUS episode — pausing

+        //    would freeze them mid-episode. The pause happens inside checkAndReportLobbyReady()

+        //    only once their title actually matches.

+        // 3. CONTENT_BOOT recovery: same reasoning as (2).

+

+        // Check immediately

+        if (checkAndReportLobbyReady(expectedTitle)) return;

+

+        // Poll every 2 seconds — no log spam, internal only

+        lobbyPollTimer = setInterval(() => {

+            checkAndReportLobbyReady(expectedTitle);

+        }, 2000);

+    }

+

+

+    function stopLobbyPoll() {

+        _pendingLobbyTitle = null;

+        if (lobbyPollTimer) {

+            clearInterval(lobbyPollTimer);

+            lobbyPollTimer = null;

+        }

+    }

+

+    function getPlayerActionFixes() {
+        return [
+            {
+                name: 'youtube-player-buttons',
+                urls: ['youtube.com'],
+                playPauseButtonSelector: '.ytp-play-button'
+            },
+            {
+                name: 'twitch-player-buttons',
+                urls: ['twitch.tv'],
+                playPauseButtonSelector: '[data-a-target="player-play-pause-button"]'
+            }
+        ];
+    }
+
+    function getActivePlayerActionFix() {
+        return getPlayerActionFixes().find(fix => matchesPlayerUrls(fix.urls)) || null;
+    }
+
+    function tryPlayerActionFix(fix, action, video, data) {
+        if (!fix) return false;
+        const button = document.querySelector(fix.playPauseButtonSelector);
+        if (!button) return false;
+
+        const isCurrentlyPlaying = !video.paused;
+        if ((action === EVENTS.PLAY && !isCurrentlyPlaying) || (action === EVENTS.PAUSE && isCurrentlyPlaying)) {
+            _setSuppress(action === EVENTS.PLAY ? 'playing' : 'paused');
+            button.click();
+        }
+        if (action === EVENTS.SEEK) {
+            seekVideo(video, data.targetTime, data.delta);
+        }
+        return true;
+    }
+
+    // --- Helper: site-specific player actions, then native HTML5 fallback ---
+    function tryMediaAction(action, data) {
+        const video = findVideo();
+        if (!video) return;
+

+        if (action === EVENTS.SEEK) {

+            const target = data ? (data.targetTime !== undefined ? data.targetTime : data.currentTime) : undefined;

+            if (!Number.isFinite(target)) {

+                reportLog(`Media Action Error: Invalid seek payload - ${JSON.stringify(data)}`, 'error');

+                return;

+            }

+            data = { ...data, targetTime: target };

+        }

+
+        try {
+            const actionFix = getActivePlayerActionFix();
+            if (tryPlayerActionFix(actionFix, action, video, data)) {
+                return;
+            }
+
+            // Fallback for native HTML5
+            if (action === EVENTS.PLAY) {

+                _setSuppress('playing');

+                video.play().catch((e) => {

+                    reportLog(`Playback prevented: ${e.message}`, 'warn');

+                    _clearSuppress('playing');

+                });

+            } else if (action === EVENTS.PAUSE) {

+                _setSuppress('paused');

+                video.pause();

+            } else if (action === EVENTS.SEEK) {
+                seekVideo(video, data.targetTime, data.delta);
+            }

+    } catch (e) {

+            reportLog(`Media Action Error: ${e.message}`, 'error');

+        }

+    }

+

+    // --- Helper: Wait until video is ready for playback (buffered & seeked) ---

+    function pollSeekReady(targetTime, timeoutMs = 8000) {

+        return new Promise((resolve) => {

+            const interval = 150;

+            let elapsed = 0;

+            const timer = setInterval(() => {

+                const video = findVideo(); // Re-query DOM on every iteration

+                if (!video) {

+                    clearInterval(timer);

+                    resolve(false);

+                    return;

+                }

+

+                elapsed += interval;

+                const current = getSyncCurrentTime(video);
+                const timeDiff = current !== null ? Math.abs(current - targetTime) : Infinity;
+                const ready = video.readyState >= 3 && timeDiff < 2.0;
+                if (ready) {

+                    clearInterval(timer);

+                    resolve(true);

+                } else if (elapsed >= timeoutMs) {

+                    clearInterval(timer);

+                    resolve(false);

+                }

+            }, interval);

+        });

+    }

+

+    // Listen for commands from background.js

+    chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {

+        if (!message) return;

+        if (message.action === 'get_current_time') {

+            const video = findVideo();

+            sendResponse({ currentTime: video ? video.currentTime : null });

+            return true;

+        }

+

+        if (message.action === 'APPLY_AUDIO_SETTINGS') {

+            _audioProcessingAllowed = true;

+            _audioSettings = mergeAudioSettings(message.settings);

+            const video = findVideo();

+            if (video) applyAudioSettings(video, _audioSettings);

+            sendResponse({ ok: true });

+            return true;

+        }

+

+        if (message.action === 'RESET_AUDIO_PROCESSING') {

+            _audioProcessingAllowed = false;

+            bypassCurrentAudioProcessing();

+            sendResponse({ ok: true });

+            return true;

+        }

+

+        // Host Control Mode: room mode/role changed.

+        if (message.type === 'CONTROL_MODE') {

+            const wasGated = hcmIsGuestGated();

+            const prevHostPeerId = hcmHostPeerId;

+            hcmControlMode = message.controlMode || 'everyone';

+            hcmAmController = !!message.amController;

+            hcmHostPeerId = message.hostPeerId || null;

+            // Reset guest-side state when leaving the gated state, OR when the

+            // host identity changes (room switch, host-leave fallback, missed

+            // teardown broadcast) — clears stale desync so a rejoin starts clean (H-3).

+            const hostChanged = prevHostPeerId !== null && hcmHostPeerId !== prevHostPeerId;

+            if ((wasGated && !hcmIsGuestGated()) || hostChanged) hcmReset();

+            sendResponse({ ok: true });

+            return true;

+        }

+

+        // Host Control Mode: background blocked our local action — handle UX locally.

+        if (message.type === 'HOST_BLOCKED') {

+            hcmHandleBlocked(message.action, message.target || null);

+            sendResponse({ ok: true });

+            return true;

+        }

+

+        // Background asks for an immediate state push (e.g. the first peer just

+        // joined while we were solo) so the newcomer syncs without waiting.

+        if (message.type === 'REQUEST_HEARTBEAT') {

+            sendHeartbeat();

+            sendResponse({ ok: true });

+            return true;

+        }

+

+        if (message.type === 'SERVER_COMMAND') {

+            const { action, payload } = message;

+            let actionCompleted = false;

+

+            // Host Control Mode: while watching on our own (desynced), don't apply

+            // host commands. Only ACK FORCE_SYNC_PREPARE — that's the one the host's

+            // force-sync flow actually waits on. Skipping CMD_ACKs for PLAY/PAUSE/SEEK

+            // is intentional so the host's UI honestly reflects that we didn't apply

+            // the command (M-2); sending them would make the host think we're synced.

+            if (hcmDesynced) {

+                const soloIgnored = [EVENTS.PLAY, EVENTS.PAUSE, EVENTS.SEEK, EVENTS.FORCE_SYNC_PREPARE, EVENTS.FORCE_SYNC_EXECUTE];

+                if (soloIgnored.includes(action)) {

+                    if (action === EVENTS.FORCE_SYNC_PREPARE) {

+                        chrome.runtime.sendMessage({ type: 'FORCE_SYNC_ACK' }).catch(() => {});

+                    }

+                    return;

+                }

+            }

+

+            // Guard: Don't execute sync commands if peers are on different episodes.

+            // Only active when autoSyncNextEpisode setting is enabled (default: on).

+            // Only blocks when BOTH sides have parseable S01E01-style IDs that differ.

+            // Films and unparseable titles always pass through.

+            const syncActions = [EVENTS.PLAY, EVENTS.PAUSE, EVENTS.SEEK,

+                                 EVENTS.FORCE_SYNC_PREPARE, EVENTS.FORCE_SYNC_EXECUTE];

+            if (_autoSyncEnabled && syncActions.includes(action)) {

+                const senderTitle = payload?.mediaTitle;

+                const myTitle = getMediaTitle();

+                if (isDifferentEpisode(senderTitle, myTitle)) {

+                    reportLog(`Episode mismatch: sender="${senderTitle || '?'}" vs mine="${myTitle || '?'}" — skipping ${action}. Disable "Auto-Sync next Episode" in settings if this causes issues.`, 'warn');

+                    if (action !== EVENTS.FORCE_SYNC_PREPARE && action !== EVENTS.FORCE_SYNC_EXECUTE) {

+                        chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId }).catch(() => {});

+                    }

+                    return;

+                }

+            }

+            

+            if (action === EVENTS.PLAY) {

+                tryMediaAction(EVENTS.PLAY);

+                chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId });

+                actionCompleted = true;

+            } else if (action === EVENTS.PAUSE) {

+                tryMediaAction(EVENTS.PAUSE);

+                chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId });

+                actionCompleted = true;

+            } else if (action === EVENTS.SEEK) {

+                tryMediaAction(EVENTS.SEEK, payload);

+                chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId });

+                actionCompleted = true;

+            } else if (action === EVENTS.FORCE_SYNC_PREPARE) {

+                if (!payload || payload.targetTime === undefined) return;

+                const video = findVideo();

+                if (video) {

+                    if (!Number.isFinite(payload.targetTime)) {

+                        reportLog(`Media Action Error: Invalid force sync payload - ${JSON.stringify(payload)}`, 'error');

+                        return;

+                    }

+                    _setSuppress('paused');

+                    video.pause();

+                    try {

+                        seekVideo(video, payload.targetTime);

+                    } catch (e) {

+                        reportLog(`Force Sync Seek Error: ${e.message}`, 'error');

+                    }

+                    pollSeekReady(payload.targetTime).then((ready) => {

+                        chrome.runtime.sendMessage({ type: 'FORCE_SYNC_ACK' }).catch(() => {});

+                        if (ready) {

+                            scheduleProactiveHeartbeat();

+                        } else {

+                            reportLog('Force Sync: Seek ready timeout, proceeding anyway', 'warn');

+                        }

+                    }).catch(() => {});

+                }

+            } else if (action === EVENTS.FORCE_SYNC_EXECUTE) {

+                stopLobbyPoll();

+                tryMediaAction(EVENTS.PLAY);

+                chrome.runtime.sendMessage({ type: 'CMD_ACK', actionTimestamp: message.actionTimestamp, commandSenderId: message.commandSenderId });

+                actionCompleted = true;

+            }

+

+            if (actionCompleted) {

+                scheduleProactiveHeartbeat();

+            }

+        }

+

+        // Episode Auto-Sync: Lobby notification from background

+        if (message.type === 'EPISODE_LOBBY') {

+            // Host Control Mode: a desynced guest is watching on their own and must

+            // not join the lobby flow. Otherwise they'd pause on title match, report

+            // ready, but then ignore the host's FORCE_SYNC_* (hcmDesynced skip in

+            // SERVER_COMMAND) and end up frozen in pause. They also can't be counted

+            // toward lobby completion (background filters them out).

+            if (hcmDesynced) {

+                sendResponse({ status: 'ignored_desynced' });

+                return true;

+            }

+            const expectedTitle = message.expectedTitle;

+            if (expectedTitle) {

+                reportLog(`Episode lobby received: waiting for "${expectedTitle}"`, 'info');

+                startLobbyPoll(expectedTitle);

+            }

+            sendResponse({ status: 'ok' });

+            return true;

+        }

+

+        // Episode Auto-Sync: Lobby cancelled by background

+        if (message.type === 'EPISODE_LOBBY_CANCEL') {

+            stopLobbyPoll();

+            sendResponse({ status: 'ok' });

+            return true;

+        }

+

+        // Episode Auto-Sync: Background confirmed lobby created, pause the video

+        if (message.type === 'PAUSE_FOR_LOBBY') {

+            const video = findVideo();

+            if (video && !video.paused) {

+                _setSuppress('paused');

+                video.pause();

+            }

+            // Start lobby poll now that we know the feature is enabled

+            if (message.expectedTitle) {

+                startLobbyPoll(message.expectedTitle);

+            }

+            sendResponse({ status: 'ok' });

+            return true;

+        }

+

+        if (message.type === 'GET_VIDEO_STATE') {

+            const video = findVideo();

+

+            const platform = (() => {

+                const h = window.location.hostname.toLowerCase();

+                if (h === 'youtube.com' || h.endsWith('.youtube.com')) return 'YouTube';

+                if (h === 'twitch.tv' || h.endsWith('.twitch.tv')) return 'Twitch';

+                if (h === 'netflix.com' || h.endsWith('.netflix.com')) return 'Netflix';

+                if (h === 'primevideo.com' || h.endsWith('.primevideo.com') || /(^|\.)amazon\.(com\.[a-z]{2}|co\.[a-z]{2}|[a-z]{2,})$/.test(h)) return 'Prime Video';

+                if (h === 'disneyplus.com' || h.endsWith('.disneyplus.com')) return 'Disney+';

+                if (h === 'hulu.com' || h.endsWith('.hulu.com')) return 'Hulu';

+                if (h === 'hbomax.com' || h.endsWith('.hbomax.com') || h === 'max.com' || h.endsWith('.max.com')) return 'Max/HBO';

+                if (h === 'vimeo.com' || h.endsWith('.vimeo.com')) return 'Vimeo';

+                if (h === 'dailymotion.com' || h.endsWith('.dailymotion.com')) return 'Dailymotion';

+                return 'Generic';

+            })();

+

+            const networkStates = ['NETWORK_EMPTY', 'NETWORK_IDLE', 'NETWORK_LOADING', 'NETWORK_NO_SOURCE'];

+            const readyStates = ['HAVE_NOTHING', 'HAVE_METADATA', 'HAVE_CURRENT_DATA', 'HAVE_FUTURE_DATA', 'HAVE_ENOUGH_DATA'];

+

+            const videoCount = document.querySelectorAll('video').length;

+            const inShadowDom = (() => {

+                let el = video;

+                while (el) {

+                    if (el.toString() === '[object ShadowRoot]') return true;

+                    el = el.parentNode;

+                }

+                // Also check if any potential host has shadow root (even if no video found)

+                if (!video) {

+                    const hosts = document.querySelectorAll('[id*="player" i], [class*="player" i], [id*="video" i], [class*="video" i]');

+                    for (const host of hosts) {

+                        if (host.shadowRoot) return true;

+                    }

+                }

+                return false;

+            })();

+

+            // Build multi-video summary for debug reports

+            const allVideos = [];

+            const allVideoEls = document.querySelectorAll('video');

+            for (let i = 0; i < allVideoEls.length; i++) {

+                const v = allVideoEls[i];

+                allVideos.push({

+                    index: i,

+                    width: v.videoWidth || v.offsetWidth || 0,

+                    height: v.videoHeight || v.offsetHeight || 0,

+                    muted: v.muted,

+                    paused: v.paused,

+                    duration: (v.duration && isFinite(v.duration)) ? Math.round(v.duration) : 0,

+                    readyState: v.readyState,

+                    src: (v.currentSrc || v.src || '').substring(0, 80),

+                    selected: v === video

+                });

+            }

+

+            if (video) {

+                const dataAttributes = {};

+                if (video.attributes) {

+                    for (const attr of video.attributes) {

+                        if (attr.name.startsWith('data-')) {

+                            dataAttributes[attr.name] = attr.value;

+                        }

+                    }

+                }

+

+                const metadata = (navigator.mediaSession && navigator.mediaSession.metadata) ? {

+                    title: navigator.mediaSession.metadata.title,

+                    artist: navigator.mediaSession.metadata.artist,

+                    album: navigator.mediaSession.metadata.album,

+                    artwork: Array.from(navigator.mediaSession.metadata.artwork || []).map(a => a.src)

+                } : null;

+

+                const errorInfo = video.error ? {

+                    code: video.error.code,

+                    message: video.error.message

+                } : null;

+

+                sendResponse({

+                    found: true,

+                    paused: video.paused,

+                    currentTime: getSyncCurrentTime(video),
+                    duration: getSyncDuration(video),
+                    nativeCurrentTime: video.currentTime,
+                    nativeDuration: Number.isFinite(video.duration) ? video.duration : 0,
+                    readyState: video.readyState,

+                    readyStateLabel: readyStates[video.readyState] || 'UNKNOWN',

+                    networkState: video.networkState,

+                    networkStateLabel: networkStates[video.networkState] || 'UNKNOWN',

+                    muted: video.muted,

+                    volume: video.volume,

+                    playbackRate: video.playbackRate,

+                    videoWidth: video.videoWidth,

+                    videoHeight: video.videoHeight,

+                    seeking: video.seeking,

+                    ended: video.ended,

+                    error: errorInfo,

+                    buffered: video.buffered && video.buffered.length > 0

+                        ? Array.from({ length: video.buffered.length }, (_, i) =>

+                            `${video.buffered.start(i).toFixed(1)}-${video.buffered.end(i).toFixed(1)}s`).join(', ')

+                        : 'none',

+                    loop: video.loop,

+                    url: window.location.href,

+                    pageTitle: document.title,

+                    id: video.id || 'none',

+                    className: video.className || 'none',

+                    src: video.src || 'none',

+                    currentSrc: video.currentSrc || 'none',

+                    dataAttributes,

+                    metadata,

+                    videoCount,

+                    inShadowDom,

+                    platform,
+                    siteQuirk: getSiteQuirkDebug(video),
+                    allVideos
+                });
+            } else {

+                sendResponse({

+                    found: false,

+                    videoCount,

+                    inShadowDom,

+                    platform,

+                    allVideos,

+                    url: window.location.href,

+                    pageTitle: document.title,

+                    metadata: (navigator.mediaSession && navigator.mediaSession.metadata) ? {

+                        title: navigator.mediaSession.metadata.title,

+                        artist: navigator.mediaSession.metadata.artist,

+                        album: navigator.mediaSession.metadata.album

+                    } : null

+                });

+            }

+        }

+    });

+

+    // Detect native events

+    // Build the relay payload from the *current* media state and send it to

+    // background.js. Re-reads the video each call so deferred (coalesced) emits

+    // carry an up-to-date position. Safe with no/invalid video — it no-ops.

+    function sendContentEvent(action) {

+        const video = findVideo();

+        if (!video) return;

+

+        const current = getSyncCurrentTime(video);
+        if (current === null) return;
+

+        const mediaTitle = (navigator.mediaSession && navigator.mediaSession.metadata) ? navigator.mediaSession.metadata.title : null;

+

+        chrome.runtime.sendMessage({

+            type: 'CONTENT_EVENT',

+            action,

+            payload: {

+                currentTime: current,

+                targetTime: current,

+                mediaTitle: mediaTitle,

+                timestamp: Date.now()

+            }

+        }).catch(() => {});

+

+        // Trigger proactive heartbeat to push stabilized state

+        scheduleProactiveHeartbeat();

+    }

+

+    // Trailing-edge flush of a coalesced play/pause burst: emit the final settled

+    // state. No-ops only when no burst followed the leading edge. We do NOT skip

+    // when the state matches the leading send — a remote command may have changed

+    // the shared state mid-window, so re-sending is the safe (idempotent) choice.

+    function flushPlayPause() {

+        playPauseCoalesceTimer = null;

+        const finalAction = pendingPlayPauseAction;

+        pendingPlayPauseAction = null;

+        // No burst follow-up (only the leading edge fired), or invalid state.

+        if (finalAction !== EVENTS.PLAY && finalAction !== EVENTS.PAUSE) return;

+        sendContentEvent(finalAction);

+    }

+

+    function reportEvent(action) {

+        if (seekDebounceTimer && (action === EVENTS.PLAY || action === EVENTS.PAUSE)) {

+            clearTimeout(seekDebounceTimer);

+            seekDebounceTimer = null;

+            const v = findVideo();

+            if (v) {
+                const syncTime = getSyncCurrentTime(v);
+                if (syncTime === null) return;
+                lastReportedSeekTime = syncTime;
+                reportLog(`[Seek] Debounce flushed immediately due to ${action.toUpperCase()}`, 'info');
+                reportEvent(EVENTS.SEEK);
+            }
+        }

+

+        const video = findVideo();

+        if (!video) return;

+

+        const current = getSyncCurrentTime(video);
+        if (current === null) return;
+

+        const eventState = action === EVENTS.PLAY ? 'playing' : (action === EVENTS.PAUSE ? 'paused' : (action === EVENTS.SEEK ? 'seek' : null));

+

+        // Echo-suppression for remotely-applied commands. MUST stay synchronous

+        // on event arrival: the suppress timer is short-lived (300ms) and would

+        // expire if deferred, leaking an echo back to peers.

+        if (_suppressTimers[eventState]) {

+            _clearSuppress(eventState);

+            return;

+        }

+

+        // Suppress only SEEK during visibility grace period (tab re-focus ghost jump).

+        // Play/Pause pass through — user may want to immediately pause after tabbing back.

+        if (Date.now() < visibilityGraceUntil && action === EVENTS.SEEK) return;

+

+        // Coalesce play/pause bursts (source swaps, ABR, ads, teardown). The

+        // synchronous gates above have already run; only the network emit is

+        // governed here. Leading edge sends the first event instantly; further

+        // events within the window are collapsed to the final state by the

+        // trailing flush. A pending burst is REPLACED, never dropped — the last

+        // event in the window always wins.

+        if (action === EVENTS.PLAY || action === EVENTS.PAUSE) {

+            if (playPauseCoalesceTimer === null) {

+                // Window closed → fresh action. Emit now (zero added latency).

+                sendContentEvent(action);

+                pendingPlayPauseAction = null;

+            } else {

+                // Window open → part of a burst. Defer to the trailing flush.

+                pendingPlayPauseAction = action;

+                clearTimeout(playPauseCoalesceTimer);

+            }

+            playPauseCoalesceTimer = setTimeout(flushPlayPause, PLAY_PAUSE_COALESCE_MS);

+            return;

+        }

+

+        // SEEK (and any non play/pause action): emit immediately.

+        sendContentEvent(action);

+    }

+

+    // --- Tab Visibility Handling ---

+    // Browsers (especially Firefox) aggressively throttle background tabs.

+    // When the user returns to a video tab, the video element may have lost

+    // time-sync and fires spurious seek events as it recovers (jumping back).

+    // We suppress only SEEK for a short grace period after tab re-focus.

+    // Play/Pause are NOT suppressed — the user may legitimately want to

+    // pause immediately after switching back.

+    let pageVisible = !document.hidden;

+    let visibilityGraceUntil = 0;

+    const VISIBILITY_GRACE_MS = 300;

+

+    document.addEventListener('visibilitychange', () => {

+        if (document.hidden) {

+            pageVisible = false;

+        } else if (!pageVisible) {

+            pageVisible = true;

+            visibilityGraceUntil = Date.now() + VISIBILITY_GRACE_MS;

+            reportLog(`Tab re-focused — suppressing seeks for ${VISIBILITY_GRACE_MS / 1000}s to prevent ghost relay`, 'warn');

+        }

+    });

+

+    // Reset on page hide/show (bfcache, tab discard)

+    window.addEventListener('pagehide', () => {

+        pageVisible = false;

+        closeAudioContext();

+        if (keepAlivePort) { try { keepAlivePort.disconnect(); } catch (_e) { /* ignore */ } keepAlivePort = null; }

+        if (lobbyPollTimer) { clearInterval(lobbyPollTimer); lobbyPollTimer = null; }

+        if (heartbeatTimeout) { clearTimeout(heartbeatTimeout); heartbeatTimeout = null; }

+        if (proactiveHeartbeatTimeout) { clearTimeout(proactiveHeartbeatTimeout); proactiveHeartbeatTimeout = null; }

+        // Drop any pending coalesced play/pause: we are tearing down and will

+        // disconnect — peers learn we are gone via PEER_STATUS 'left'. This also

+        // intentionally suppresses the teardown play/pause burst at the source.

+        if (playPauseCoalesceTimer) { clearTimeout(playPauseCoalesceTimer); playPauseCoalesceTimer = null; pendingPlayPauseAction = null; }

+        observer.disconnect();

+    });

+    window.addEventListener('pageshow', (event) => {

+        // event.persisted is true ONLY when restored from bfcache, not on initial load

+        if (event.persisted && !pageVisible) {

+            pageVisible = true;

+            visibilityGraceUntil = Date.now() + VISIBILITY_GRACE_MS;

+            reportLog(`Page restored from cache — suppressing seeks for ${VISIBILITY_GRACE_MS / 1000}s`, 'warn');

+        }

+    });

+

+    const handlePlay = () => reportEvent(EVENTS.PLAY);

+    const handlePause = () => reportEvent(EVENTS.PAUSE);

+    // Host Control Mode: a 'waiting' (buffering) event opens a grace window so the

+    // pause it may trigger isn't misread as a deliberate guest action (EC-1).

+    const handleWaiting = () => { hcmBufferingUntil = Date.now() + HCM_BUFFERING_GRACE_MS; };

+

+    // Seek filtering: ignore HLS/DASH buffering micro-seeks.

+    // Only relay if delta >= MIN_SEEK_DELTA AND not already debouncing.

+    const handleSeeked = () => {

+        const video = findVideo();

+        if (!video) return;

+        const current = getSyncCurrentTime(video);
+        if (current === null) return;
+

+        // Step 1: Check expectedSeekTime (programmatic seek from remote peer)

+        if (expectedSeekTime !== null) {

+            if (Math.abs(current - expectedSeekTime) < 1.0) {

+                // Video arrived at expected time. Safely clear and ignore.

+                expectedSeekTime = null;

+                lastReportedSeekTime = current;

+                return;

+            } else {

+                // User manually scrubbed to a DIFFERENT time while we were buffering

+                expectedSeekTime = null;

+            }

+        }

+

+        // Step 2: Suppress during visibility grace period (tab re-focus ghost events)

+        if (Date.now() < visibilityGraceUntil) return;

+

+        const delta = lastReportedSeekTime !== null ? Math.abs(current - lastReportedSeekTime) : null;

+        const deltaStr = delta !== null ? `Δ${delta.toFixed(2)}s` : 'Δ?';

+

+        // Step 3: Delta check — skip micro-seeks (buffering, chapter markers, etc.)

+        if (lastReportedSeekTime !== null && delta < MIN_SEEK_DELTA) {

+            reportLog(`[Seek] Filtered (${deltaStr} < ${MIN_SEEK_DELTA}s threshold) @ ${current.toFixed(2)}s — not relayed`, 'warn');

+            return;

+        }

+

+        // Step 4: Debounce rapid consecutive seeks (e.g. scrubbing)

+        // — wait 300ms for the user to settle before relaying

+        if (seekDebounceTimer) clearTimeout(seekDebounceTimer);

+        seekDebounceTimer = setTimeout(() => {

+            seekDebounceTimer = null;

+            const v = findVideo();

+            if (!v) return;

+            const settled = getSyncCurrentTime(v);
+            if (settled === null) return;
+            const finalDelta = lastReportedSeekTime !== null ? Math.abs(settled - lastReportedSeekTime) : null;

+            const finalDeltaStr = finalDelta !== null ? `Δ${finalDelta.toFixed(2)}s` : 'Δ?';

+            lastReportedSeekTime = settled;

+            reportLog(`[Seek] Relayed @ ${settled.toFixed(2)}s (${finalDeltaStr})`, 'info');

+            reportEvent(EVENTS.SEEK);

+        }, 300);

+    };

+

+

+    let lastVideoSrc = undefined;

+

+    // Episode detection handler for loadeddata event

+    const handleLoadedData = () => {

+        checkEpisodeTransition();

+    };

+

+    function setupListeners() {

+        const video = findVideo();

+        if (video) {

+            if (currentAudioVideo && currentAudioVideo !== video) {

+                bypassCurrentAudioProcessing();

+            }

+            const existing = video._koalaHandlers;

+            if (existing) {

+                video.removeEventListener('play', existing.play);

+                video.removeEventListener('pause', existing.pause);

+                video.removeEventListener('seeked', existing.seeked);

+                video.removeEventListener('loadeddata', existing.loadeddata);

+                if (existing.waiting) video.removeEventListener('waiting', existing.waiting);

+            }

+            video._koalaHandlers = { play: handlePlay, pause: handlePause, seeked: handleSeeked, loadeddata: handleLoadedData, waiting: handleWaiting };

+

+            video.addEventListener('play', handlePlay);

+            video.addEventListener('pause', handlePause);

+            video.addEventListener('seeked', handleSeeked);

+            video.addEventListener('loadeddata', handleLoadedData);

+            video.addEventListener('waiting', handleWaiting);

+            video.dataset.koalaAttached = 'true';

+            lastVideoSrc = video.currentSrc || video.src || null;

+

+            if (!lastKnownMediaTitle) {

+                lastKnownMediaTitle = getMediaTitle();

+            }

+

+            if (_audioSettings && _audioProcessingAllowed) applyAudioSettings(video, _audioSettings);

+        }

+    }

+

+    // SPA Navigation Handler (MutationObserver)

+    let lastMutate = 0;

+    let observerTimeout = null;

+

+    function checkVideo() {

+        lastMutate = Date.now();

+        const video = findVideo();

+

+        if (!video && lastVideoSrc !== undefined) {

+            reportLog('Video element removed from page', 'warn');

+            lastVideoSrc = undefined;

+            closeAudioContext();

+            return;

+        }

+

+        if (!video) return;

+

+        const currentSrc = video.currentSrc || video.src || null;

+

+        if (!video.dataset.koalaAttached || (lastVideoSrc !== undefined && currentSrc && lastVideoSrc !== currentSrc)) {

+            if (lastVideoSrc !== undefined && currentSrc && lastVideoSrc !== currentSrc) {

+                checkEpisodeTransition();

+            }

+            setupListeners();

+        }

+    }

+

+    const observer = new MutationObserver(() => {

+        const now = Date.now();

+        if (now - lastMutate >= 1000) {

+            checkVideo();

+        } else {

+            if (observerTimeout) clearTimeout(observerTimeout);

+            observerTimeout = setTimeout(checkVideo, 1000 - (now - lastMutate));

+        }

+    });

+    observer.observe(document.documentElement, { childList: true, subtree: true });

+

+    // --- SHARED_HEARTBEAT_INJECT_START ---

+    const HEARTBEAT_INTERVAL_VAL = 15000;

+    // --- SHARED_HEARTBEAT_INJECT_END ---

+

+    // Heartbeat Refactoring (Self-scheduling setTimeout with proactive heartbeat scheduling)

+    let heartbeatTimeout = null;

+    let proactiveHeartbeatTimeout = null;

+    let heartbeatErrorCount = 0;

+

+    function sendHeartbeat() {

+        const video = findVideo();

+        if (!video) return;

+

+        const mediaTitle = (navigator.mediaSession && navigator.mediaSession.metadata) ? navigator.mediaSession.metadata.title : null;

+        chrome.runtime.sendMessage({

+            type: 'HEARTBEAT',

+            payload: {

+                playbackState: video.paused ? 'paused' : 'playing',

+                currentTime: getSyncCurrentTime(video),
+                mediaTitle: mediaTitle,

+                volume: video.volume,

+                muted: video.muted

+            }

+        }).catch(err => {

+            if (err.message.includes('Extension context invalidated')) {

+                heartbeatErrorCount++;

+                if (heartbeatErrorCount === 1) {

+                    reportLog('Extension reloaded. Please refresh the page if sync stops working.', 'warn');

+                }

+                if (heartbeatTimeout) clearTimeout(heartbeatTimeout);

+                if (proactiveHeartbeatTimeout) clearTimeout(proactiveHeartbeatTimeout);

+                observer.disconnect();

+            }

+        });

+    }

+

+    function schedulePeriodicHeartbeat() {

+        if (heartbeatTimeout) clearTimeout(heartbeatTimeout);

+        heartbeatTimeout = setTimeout(() => {

+            sendHeartbeat();

+            schedulePeriodicHeartbeat();

+        }, HEARTBEAT_INTERVAL_VAL);

+    }

+

+    function scheduleProactiveHeartbeat() {

+        if (proactiveHeartbeatTimeout) clearTimeout(proactiveHeartbeatTimeout);

+        proactiveHeartbeatTimeout = setTimeout(() => {

+            sendHeartbeat();

+            schedulePeriodicHeartbeat(); // Reschedules the next periodic check to be exactly 15s from now

+        }, 500); // 500ms stabilization delay

+    }

+

+    // Initial Setup

+    setupListeners();

+

+    // Maintain a persistent keep-alive port connection to prevent background SW suspension

+    let keepAlivePort = null;

+    function connectKeepAlivePort() {

+        try {

+            if (chrome.runtime.id) {

+                keepAlivePort = chrome.runtime.connect({ name: 'keepAlive' });

+                keepAlivePort.onDisconnect.addListener(() => {

+                    keepAlivePort = null;

+                    setTimeout(connectKeepAlivePort, 1000);

+                });

+            }

+        } catch (_e) {

+            // Extension context invalidated or disabled

+        }

+    }

+    connectKeepAlivePort();

+

+    schedulePeriodicHeartbeat();

+

+    // Immediate heartbeat on injection — populate peer data without waiting 15s

+    setTimeout(() => sendHeartbeat(), 300);

+

+    // Episode Auto-Sync: Boot recovery — check if background has an active lobby

+    chrome.runtime.sendMessage({ type: 'CONTENT_BOOT' }, (res) => {

+        if (chrome.runtime.lastError) return;

+        if (res && res.lobbyActive && res.expectedTitle) {

+            reportLog(`Boot: Active lobby detected for "${res.expectedTitle}"`, 'info');

+            startLobbyPoll(res.expectedTitle);

+        }

+    });

+

+    // Host Control Mode: fetch current room mode/role on injection (we may have

+    // been injected after ROOM_DATA already arrived, missing the broadcast).

+    chrome.runtime.sendMessage({ type: 'GET_CONTROL_MODE' }, (res) => {

+        if (chrome.runtime.lastError || !res) return;

+        hcmControlMode = res.controlMode || 'everyone';

+        hcmAmController = !!res.amController;

+        hcmHostPeerId = res.hostPeerId || null;

+        // Re-adopt persisted desync after a page reload so we don't start synced

+        // while background still relays us as "Solo" to the host (split-brain).

+        // Only when we're actually a gated guest — never adopt a stale flag as a

+        // controller or in 'everyone' mode (would self-label "Solo" / ignore commands).

+        if (res.desynced && res.controlMode === 'host-only' && !res.amController && !hcmDesynced) {

+            hcmDesynced = true;

+            hcmShowBadge();

+        }

+    });

+

+    // Pull localized strings for the in-page dialog/badge (English fallback above).

+    chrome.runtime.sendMessage({ type: 'GET_HCM_STRINGS' }, (res) => {

+        if (chrome.runtime.lastError || !res) return;

+        Object.keys(hcmStrings).forEach(k => { if (res[k]) hcmStrings[k] = res[k]; });

+        // If the badge is already showing (early desync), refresh its text in place.

+        // Re-creating the host element nukes the click target mid-poll and can drop a

+        // click that landed between remove() and the re-create (L-4).

+        if (hcmBadgeHost) {

+            const span = hcmBadgeHost.shadowRoot && hcmBadgeHost.shadowRoot.querySelector('span');

+            if (span) span.textContent = '● ' + hcmStrings.badge;

+        }

+    });

+

+})();

diff --git a/extension/page-api-seek-overrides.js b/extension/page-api-seek-overrides.js
index 58532ed..60c9041 100644
--- a/extension/page-api-seek-overrides.js
+++ b/extension/page-api-seek-overrides.js
@@ -1,6 +1,10 @@
 (function(root) {
-    const PAGE_API_SEEK_PROVIDERS = [
-        { domain: 'netflix.com', provider: 'netflix' } // Avoids M7375 when seeking via video.currentTime.
+    const PAGE_API_SEEK_FIXES = [
+        {
+            name: 'netflix-page-api-seek',
+            urls: ['netflix.com'],
+            provider: 'netflix'
+        }
     ];
 
     function normalizeHost(input) {
@@ -12,12 +16,16 @@
     }
 
     function matchesDomain(host, domain) {
-        return host === domain || host.endsWith(`.${domain}`);
+        const normalizedDomain = normalizeHost(domain);
+        return normalizedDomain && (host === normalizedDomain || host.endsWith(`.${normalizedDomain}`));
     }
 
-    root.KOALA_PAGE_API_SEEK_PROVIDERS = PAGE_API_SEEK_PROVIDERS;
+    root.KOALA_PAGE_API_SEEK_FIXES = PAGE_API_SEEK_FIXES;
+    root.KOALA_PAGE_API_SEEK_PROVIDERS = PAGE_API_SEEK_FIXES;
     root.koalaFindPageApiSeekProvider = (input) => {
         const host = normalizeHost(input);
-        return PAGE_API_SEEK_PROVIDERS.find(entry => matchesDomain(host, entry.domain)) || null;
+        return PAGE_API_SEEK_FIXES.find(entry =>
+            Array.isArray(entry.urls) && entry.urls.some(url => matchesDomain(host, url))
+        ) || null;
     };
 })(globalThis);
diff --git a/extension/popup.js b/extension/popup.js
index 294dcb6..6cbb31e 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -74,7 +74,8 @@ const elements = {
     syncTabCopyInvite: document.getElementById('syncTabCopyInvite'),
     devToolsTabBtn: document.getElementById('devToolsTabBtn'),
     remoteSeekBack: document.getElementById('remoteSeekBack'),
-    remoteSeekForward: document.getElementById('remoteSeekForward')
+    remoteSeekForward: document.getElementById('remoteSeekForward'),
+    remoteSeekFiveMin: document.getElementById('remoteSeekFiveMin')
 };
 
 let localPeerId = null;
@@ -1708,8 +1709,8 @@ elements.pauseBtn.addEventListener('click', () => {
     }, 2500);
 });
 
-function simulateRemoteSeek(delta) {
-    chrome.runtime.sendMessage({ type: 'DEV_SIMULATE_REMOTE_SEEK', delta }, (res) => {
+function simulateRemoteSeek({ delta = null, targetTime = null }) {
+    chrome.runtime.sendMessage({ type: 'DEV_SIMULATE_REMOTE_SEEK', delta, targetTime }, (res) => {
         if (chrome.runtime.lastError || !res || res.status !== 'ok') {
             showToast(res?.message || 'Remote seek failed', 'error');
             return;
@@ -1720,10 +1721,13 @@ function simulateRemoteSeek(delta) {
 }
 
 if (elements.remoteSeekBack) {
-    elements.remoteSeekBack.addEventListener('click', () => simulateRemoteSeek(-30));
+    elements.remoteSeekBack.addEventListener('click', () => simulateRemoteSeek({ delta: -30 }));
 }
 if (elements.remoteSeekForward) {
-    elements.remoteSeekForward.addEventListener('click', () => simulateRemoteSeek(30));
+    elements.remoteSeekForward.addEventListener('click', () => simulateRemoteSeek({ delta: 30 }));
+}
+if (elements.remoteSeekFiveMin) {
+    elements.remoteSeekFiveMin.addEventListener('click', () => simulateRemoteSeek({ targetTime: 300 }));
 }
 
 elements.clearLogs.addEventListener('click', () => {
@@ -2083,6 +2087,26 @@ elements.copyLogs.addEventListener('click', () => {
             lines.push(`- **ReadyState:** ${readyOk ? '\u2705' : '\u26A0\uFE0F'} ${safe(vs.readyState, '?')} (${readyLabel})`);
             lines.push(`- **Network:** ${safe(vs.networkState, '?')} (${netLabel})`);
             lines.push(`- **Buffered:** ${safe(vs.buffered, '?')}`);
+            if (vs.nativeCurrentTime != null || vs.nativeDuration != null) {
+                lines.push(`- **Native Time:** ${safe(vs.nativeCurrentTime, '?')}s / ${safe(vs.nativeDuration, '?')}s`);
+            }
+            if (vs.siteQuirk) {
+                const quirk = vs.siteQuirk;
+                const label = quirk.name || quirk.key || 'site';
+                if (quirk.timeline) {
+                    lines.push(`- **${label} Timeline:** ${safe(quirk.timeline.current, '?')}s / ${safe(quirk.timeline.duration, '?')}s`);
+                }
+                const candidates = Array.isArray(quirk.timelineCandidates) ? quirk.timelineCandidates : [];
+                if (candidates.length > 0) {
+                    lines.push(`- **${label} Timeline Candidates:**`);
+                    candidates.forEach(c => lines.push(`  - ${safe(c.source, '?')}: ${safe(c.current, '?')}s / ${safe(c.duration, '?')}s`));
+                }
+                const buttons = Array.isArray(quirk.seekButtons) ? quirk.seekButtons : [];
+                if (buttons.length > 0) {
+                    lines.push(`- **${label} Buttons:**`);
+                    buttons.forEach(label => lines.push(`  - ${label}`));
+                }
+            }
             lines.push(`- **Dimensions:** ${safe(vs.videoWidth, '?')}x${safe(vs.videoHeight, '?')}${dimOk ? '' : ' \u26A0\uFE0F 0x0'}`);
             lines.push(`- **Muted:** ${safe(vs.muted, '?')} | **Volume:** ${safe(vs.volume, '?')} | **Speed:** ${safe(vs.playbackRate, '?')}x`);
             lines.push(`- **Seeking:** ${safe(vs.seeking, '?')} | **Ended:** ${safe(vs.ended, '?')} | **Loop:** ${safe(vs.loop, '?')}`);
@@ -2256,6 +2280,18 @@ function refreshDebugInfo() {
                 addField('Network', `${state.networkState} (${state.networkStateLabel || '?'})`,
                     state.networkState === 1 ? '#22c55e' : state.networkState === 3 ? '#ef4444' : 'var(--text-muted)');
                 addField('Buffered', state.buffered || '?');
+                if (state.nativeCurrentTime != null || state.nativeDuration != null) {
+                    addField('Native Time', `${state.nativeCurrentTime ?? '?'}s / ${state.nativeDuration ?? '?'}s`);
+                }
+                if (state.siteQuirk) {
+                    const quirk = state.siteQuirk;
+                    const label = quirk.name || quirk.key || 'Site';
+                    if (quirk.timeline) {
+                        addField(`${label} Timeline`, `${quirk.timeline.current ?? '?'}s / ${quirk.timeline.duration ?? '?'}s`);
+                    }
+                    const buttons = Array.isArray(quirk.seekButtons) ? quirk.seekButtons.slice(0, 4).join(' | ') : '';
+                    if (buttons) addField(`${label} Buttons`, buttons);
+                }
 
                 addSection('Properties');
                 addField('Seeking', String(state.seeking));
diff --git a/scripts/test-content-video-finder.cjs b/scripts/test-content-video-finder.cjs
index a80443b..b9c5e3c 100644
--- a/scripts/test-content-video-finder.cjs
+++ b/scripts/test-content-video-finder.cjs
@@ -19,6 +19,14 @@ function extractFunction(name, text) {
   throw new Error(`${name} body did not terminate`);
 }
 
+function makeSeekable(ranges = []) {
+  return {
+    length: ranges.length,
+    start(i) { return ranges[i][0]; },
+    end(i) { return ranges[i][1]; }
+  };
+}
+
 function makeVideo(name, width, height, options = {}) {
   return {
     name,
@@ -28,7 +36,9 @@ function makeVideo(name, width, height, options = {}) {
     offsetWidth: width,
     offsetHeight: height,
     muted: options.muted ?? true,
-    duration: options.duration ?? 0
+    duration: options.duration ?? 0,
+    currentTime: options.currentTime ?? 0,
+    seekable: options.seekable ?? makeSeekable()
   };
 }
 
@@ -61,4 +71,100 @@ assert.strictEqual(
   'findVideo should score Shadow DOM videos together with light DOM videos'
 );
 
+function makeDocument(nodes = []) {
+  return {
+    querySelectorAll() { return nodes; }
+  };
+}
+
+function makeNode(attrs = {}, textContent = '') {
+  return {
+    textContent,
+    value: attrs.value,
+    max: attrs.max,
+    clicked: 0,
+    click() { this.clicked += 1; },
+    getAttribute(name) { return attrs[name] ?? null; }
+  };
+}
+
+function loadTimelineFns(hostname, document = makeDocument()) {
+  return Function('window', 'document', [
+    'let lastDisneyPlusTimelineCandidates = [];',
+    extractFunction('hostMatchesUrl', source),
+    extractFunction('matchesPlayerUrls', source),
+    extractFunction('isDisneyPlusHost', source),
+    extractFunction('getSeekableRange', source),
+    extractFunction('parseClockTime', source),
+    extractFunction('parseTimelineText', source),
+    extractFunction('getDisneyPlusUiTimeline', source),
+    extractFunction('getElementLabel', source),
+    extractFunction('getDisneyPlusSeekButtonLabels', source),
+    extractFunction('clickDisneyPlusRelativeSeek', source),
+    extractFunction('getDisneyPlusTimeline', source),
+    extractFunction('getSiteQuirkAdapters', source),
+    extractFunction('getActiveSiteQuirk', source),
+    extractFunction('getSiteQuirkTimeline', source),
+    extractFunction('getSiteQuirkDebug', source),
+    extractFunction('getSyncCurrentTime', source),
+    extractFunction('getSyncDuration', source),
+    extractFunction('toNativeSeekTime', source),
+    'return { getActiveSiteQuirk, getSyncCurrentTime, getSyncDuration, toNativeSeekTime, clickDisneyPlusRelativeSeek };'
+  ].join('\n'))({ location: { hostname } }, document);
+}
+
+function loadPlayerFixFns(hostname) {
+  return Function('window', [
+    extractFunction('hostMatchesUrl', source),
+    extractFunction('matchesPlayerUrls', source),
+    extractFunction('getPlayerActionFixes', source),
+    extractFunction('getActivePlayerActionFix', source),
+    'return { getPlayerActionFixes, getActivePlayerActionFix };'
+  ].join('\n'))({ location: { hostname } });
+}
+
+const disneyUiDocument = makeDocument([
+  makeNode({ 'aria-valuetext': '0:09 / 180:00' })
+]);
+const disneyFns = loadTimelineFns('www.disneyplus.com', disneyUiDocument);
+assert.equal(disneyFns.getActiveSiteQuirk().name, 'disneyplus-timeline-and-buttons');
+assert.deepEqual(disneyFns.getActiveSiteQuirk().urls, ['disneyplus.com']);
+const disneyVideo = makeVideo('disney-offset', 1920, 1080, {
+  currentTime: 29,
+  duration: 0,
+  seekable: makeSeekable([[0, 32400]])
+});
+assert.equal(disneyFns.getSyncCurrentTime(disneyVideo), 9);
+assert.equal(disneyFns.getSyncDuration(disneyVideo), 10800);
+assert.equal(disneyFns.toNativeSeekTime(disneyVideo, 39), 119);
+
+const disneySeekableFallbackFns = loadTimelineFns('www.disneyplus.com');
+const disneyOffsetVideo = makeVideo('disney-offset', 1920, 1080, {
+  currentTime: 29,
+  duration: 0,
+  seekable: makeSeekable([[20, 10820]])
+});
+assert.equal(disneySeekableFallbackFns.getSyncCurrentTime(disneyOffsetVideo), 9);
+assert.equal(disneySeekableFallbackFns.getSyncDuration(disneyOffsetVideo), 10800);
+assert.equal(disneySeekableFallbackFns.toNativeSeekTime(disneyOffsetVideo, 39), 59);
+
+const genericFns = loadTimelineFns('example.com');
+assert.equal(genericFns.getActiveSiteQuirk(), null);
+assert.equal(genericFns.getSyncCurrentTime(disneyVideo), 29);
+assert.equal(genericFns.getSyncDuration(disneyVideo), 0);
+assert.equal(genericFns.toNativeSeekTime(disneyVideo, 39), 39);
+
+const backButton = makeNode({ 'aria-label': '10 Sekunden zurück' });
+const forwardButton = makeNode({ 'aria-label': '10 Sekunden vorspulen' });
+const disneyButtonFns = loadTimelineFns('www.disneyplus.com', makeDocument([backButton, forwardButton]));
+assert.equal(disneyButtonFns.clickDisneyPlusRelativeSeek(-30), true);
+assert.equal(disneyButtonFns.clickDisneyPlusRelativeSeek(30), true);
+
+const twitchFixFns = loadPlayerFixFns('player.twitch.tv');
+assert.equal(twitchFixFns.getActivePlayerActionFix().name, 'twitch-player-buttons');
+assert.deepEqual(twitchFixFns.getActivePlayerActionFix().urls, ['twitch.tv']);
+
+const genericFixFns = loadPlayerFixFns('example.com');
+assert.equal(genericFixFns.getActivePlayerActionFix(), null);
+
 console.log('content video finder tests passed');
diff --git a/website/assets/NewLogoIcon_64.webp b/website/assets/NewLogoIcon_64.webp
index 660ffe28987821948744dafb8543121d3c9924ee..b1f4e43ede2c8f7304360593b419303eb296c0d2 100644
GIT binary patch
delta 175
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zOKs7r7~J4m$Dv1=mJaDq77GQQQ>rw7XYD@K>HoHNx9RHcyI5?-@+?sg|AU>&-G4md
zD$=Kt1fjo2eO@GCUGUCe6T6+N5TM#$rGCu%%0C_&{K4-ZrketIuEE5-AGFN%Jt!V_
dA-)%z8o>$A#3xK?o>SG_`v#;TD2(v9006+KRrvq_

delta 175
zcmV;g08sye3W5r-j{*uRbh!h)p{C}lShJY|(*b{`0tbHB-=W1lvs8JmTg?5P$6NU|
zO#PNrF}c9Ck3x?#EFIFIEEWqqr&MVE&)R*f)BkMkZ`0M?cCguv<XEB~{|7sly8d~@
zRi#fP2}6F4`n*WOyWyO`=q~VL0Ooo5E9abon$}J<ILvCrjPmN9T=EIoYf$hn#5QI8
dPuCa041mkIUP&THprz?#XmVYp*&&Yr001i7TQdLv


From ce522e2ab7bc5a29f0926556cafbd976f92ad8ab Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 13:01:14 +0200
Subject: [PATCH 100/151] Safeguard Netflix player session ID lookup in
 background.js

---
 extension/background.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/extension/background.js b/extension/background.js
index 5f95b5d..d0c8543 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1672,7 +1672,8 @@ function installPageApiSeekBridge() {
         try {
             if (match.provider === 'netflix') {
                 const videoPlayer = window.netflix?.appContext?.state?.playerApp?.getAPI?.().videoPlayer;
-                const sessionId = videoPlayer?.getAllPlayerSessionIds?.()[0];
+                const ids = videoPlayer?.getAllPlayerSessionIds?.();
+                const sessionId = ids ? ids[0] : null;
                 const player = sessionId ? videoPlayer.getVideoPlayerBySessionId(sessionId) : null;
                 player?.seek(Math.round(time * 1000));
             }

From 066d2c9407b50ae08dee36938392f89948166d71 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 13:19:47 +0200
Subject: [PATCH 101/151] Implement temporary Media Session interceptor
 diagnostics for Disney+ and restore Netflix sessionId lookup guard

---
 extension/background.js | 53 ++++++++++++++++++++++++++++++++++++++++-
 extension/content.js    | 11 ++++++++-
 extension/popup.js      |  4 ++++
 3 files changed, 66 insertions(+), 2 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index d0c8543..a33ca9c 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1654,6 +1654,42 @@ async function devRemoteToolsAllowed() {
     return data.username === 'KoalaDev';
 }
 
+const mediaSessionInterceptorHosts = [
+    'disneyplus.com'
+];
+
+function shouldInstallMediaSessionInterceptor(url) {
+    try {
+        const host = new URL(url).hostname.toLowerCase();
+        return mediaSessionInterceptorHosts.some(h => host === h || host.endsWith('.' + h));
+    } catch (_e) {
+        return false;
+    }
+}
+
+function installMediaSessionInterceptor() {
+    if (window.__koalaMediaSessionInterceptorInstalled) return;
+    window.__koalaMediaSessionInterceptorInstalled = true;
+    if (!navigator.mediaSession || typeof navigator.mediaSession.setPositionState !== 'function') return;
+
+    const originalSet = navigator.mediaSession.setPositionState;
+    navigator.mediaSession.setPositionState = function(state) {
+        try {
+            window.postMessage({
+                __koalaMediaSessionCapture: 1,
+                state: {
+                    duration: state?.duration,
+                    playbackRate: state?.playbackRate,
+                    position: state?.position
+                }
+            }, '*');
+        } catch (_e) {
+            // Suppress errors to not interfere with player
+        }
+        return originalSet.apply(navigator.mediaSession, arguments);
+    };
+}
+
 function shouldUsePageApiSeek(url) {
     return typeof globalThis.koalaFindPageApiSeekProvider === 'function' &&
         !!globalThis.koalaFindPageApiSeekProvider(url);
@@ -1697,9 +1733,12 @@ function setPageApiSeekEnabled(enabled) {
 async function injectContentScript(tabId) {
     let needsPageApiSeek = false;
     let pageApiSeekReady = false;
+    let isMediaSessionCapable = false;
     try {
         const tab = await chrome.tabs.get(tabId);
-        needsPageApiSeek = shouldUsePageApiSeek(tab?.url || '');
+        const url = tab?.url || '';
+        needsPageApiSeek = shouldUsePageApiSeek(url);
+        isMediaSessionCapable = shouldInstallMediaSessionInterceptor(url);
     } catch (_e) {
         // Fall through to the generic content script injection.
     }
@@ -1722,6 +1761,18 @@ async function injectContentScript(tabId) {
         }
     }
 
+    if (isMediaSessionCapable) {
+        try {
+            await chrome.scripting.executeScript({
+                target: { tabId },
+                world: 'MAIN',
+                func: installMediaSessionInterceptor
+            });
+        } catch (err) {
+            addLog(`Media Session interceptor injection failed: ${err.message}`, 'warn');
+        }
+    }
+
     await chrome.scripting.executeScript({
         target: { tabId },
         files: ['page-api-seek-overrides.js']
diff --git a/extension/content.js b/extension/content.js
index 70d7315..a64d1d0 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -1396,6 +1396,7 @@
                     inShadowDom,

                     platform,
                     siteQuirk: getSiteQuirkDebug(video),
+                    mediaSessionPosition: window.__koalaLastCapturedMediaPosition || null,
                     allVideos
                 });
             } else {

@@ -1406,7 +1407,8 @@
                     platform,

                     allVideos,

                     url: window.location.href,

-                    pageTitle: document.title,

+                    pageTitle: document.title,
+                    mediaSessionPosition: window.__koalaLastCapturedMediaPosition || null,

                     metadata: (navigator.mediaSession && navigator.mediaSession.metadata) ? {

                         title: navigator.mediaSession.metadata.title,

                         artist: navigator.mediaSession.metadata.artist,

@@ -1804,6 +1806,13 @@
         // If the badge is already showing (early desync), refresh its text in place.

         // Re-creating the host element nukes the click target mid-poll and can drop a

         // click that landed between remove() and the re-create (L-4).

+        window.addEventListener('message', (event) => {
+            if (event.source !== window) return;
+            const data = event.data;
+            if (data && data.__koalaMediaSessionCapture === 1) {
+                window.__koalaLastCapturedMediaPosition = data.state;
+            }
+        });
         if (hcmBadgeHost) {

             const span = hcmBadgeHost.shadowRoot && hcmBadgeHost.shadowRoot.querySelector('span');

             if (span) span.textContent = '● ' + hcmStrings.badge;

diff --git a/extension/popup.js b/extension/popup.js
index 6cbb31e..cd183f5 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -2283,6 +2283,10 @@ function refreshDebugInfo() {
                 if (state.nativeCurrentTime != null || state.nativeDuration != null) {
                     addField('Native Time', `${state.nativeCurrentTime ?? '?'}s / ${state.nativeDuration ?? '?'}s`);
                 }
+                if (state.mediaSessionPosition) {
+                    const pos = state.mediaSessionPosition;
+                    addField('MediaSession Captured', `${pos.position ?? '?'}s / ${pos.duration ?? '?'}s (@ ${pos.playbackRate ?? 1}x)`, '#a855f7');
+                }
                 if (state.siteQuirk) {
                     const quirk = state.siteQuirk;
                     const label = quirk.name || quirk.key || 'Site';

From 54b806d2708ec6f0b0ca6dbc39283d6905a2e10f Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 13:23:14 +0200
Subject: [PATCH 102/151] Fix Media Session listener scoping by moving it to
 root IIFE level in content.js

---
 extension/content.js | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index a64d1d0..d9414ef 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -1799,6 +1799,14 @@
         }

     });

 

+    window.addEventListener('message', (event) => {
+        if (event.source !== window) return;
+        const data = event.data;
+        if (data && data.__koalaMediaSessionCapture === 1) {
+            window.__koalaLastCapturedMediaPosition = data.state;
+        }
+    });
+
     // Pull localized strings for the in-page dialog/badge (English fallback above).

     chrome.runtime.sendMessage({ type: 'GET_HCM_STRINGS' }, (res) => {

         if (chrome.runtime.lastError || !res) return;

@@ -1806,13 +1814,6 @@
         // If the badge is already showing (early desync), refresh its text in place.

         // Re-creating the host element nukes the click target mid-poll and can drop a

         // click that landed between remove() and the re-create (L-4).

-        window.addEventListener('message', (event) => {
-            if (event.source !== window) return;
-            const data = event.data;
-            if (data && data.__koalaMediaSessionCapture === 1) {
-                window.__koalaLastCapturedMediaPosition = data.state;
-            }
-        });
         if (hcmBadgeHost) {

             const span = hcmBadgeHost.shadowRoot && hcmBadgeHost.shadowRoot.querySelector('span');

             if (span) span.textContent = '● ' + hcmStrings.badge;


From 71fa6e7315447c8cc72a21cc294d33e3e4d79dab Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 13:25:11 +0200
Subject: [PATCH 103/151] Support absolute seeks on Disney+ by automatically
 translating them to relative jumps

---
 extension/content.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/extension/content.js b/extension/content.js
index d9414ef..7287b5d 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -323,7 +323,14 @@
 
     function seekVideo(video, targetTime, relativeDelta = null) {
         const siteQuirk = getActiveSiteQuirk();
-        if (siteQuirk && !siteQuirk.getTimeline(video) && siteQuirk.clickRelativeSeek(relativeDelta)) {
+        let delta = relativeDelta;
+        if (delta === null && siteQuirk) {
+            const current = getSyncCurrentTime(video);
+            if (current !== null) {
+                delta = targetTime - current;
+            }
+        }
+        if (siteQuirk && siteQuirk.clickRelativeSeek(delta)) {
             expectedSeekTime = null;
             return;
         }

From bea0f6925c0fe5a079f7890dcabff1eda7a31232 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 13:27:53 +0200
Subject: [PATCH 104/151] Implement cached duration fallback and simulate
 keyboard events fallback for Disney+ seeks when controls are hidden

---
 extension/content.js                  | 38 +++++++++++++++++++++++++--
 scripts/test-content-video-finder.cjs |  1 +
 2 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index 7287b5d..95d6dad 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -59,6 +59,7 @@
 

     const PAGE_API_SEEK_BRIDGE = 1;
     let lastDisneyPlusTimelineCandidates = [];
+    let lastKnownDisneyPlusDuration = 0;
 
     function hostMatchesUrl(host, url) {
         const normalized = String(url || '')
@@ -218,10 +219,31 @@
             return backward ? backRe.test(label) : forwardRe.test(label);
         });
 
-        if (!button || typeof button.click !== 'function') return false;
+        if (button && typeof button.click === 'function') {
+            const clicks = Math.max(1, Math.min(12, Math.round(Math.abs(delta) / 10)));
+            for (let i = 0; i < clicks; i++) {
+                setTimeout(() => button.click(), i * 60);
+            }
+            return true;
+        }
+
+        // Fallback: Simulate ArrowLeft / ArrowRight keyboard events
         const clicks = Math.max(1, Math.min(12, Math.round(Math.abs(delta) / 10)));
+        const eventInit = {
+            key: backward ? 'ArrowLeft' : 'ArrowRight',
+            code: backward ? 'ArrowLeft' : 'ArrowRight',
+            keyCode: backward ? 37 : 39,
+            which: backward ? 37 : 39,
+            bubbles: true,
+            cancelable: true,
+            view: window
+        };
+        const target = document.querySelector('.hive-video') || document.activeElement || document.body;
         for (let i = 0; i < clicks; i++) {
-            setTimeout(() => button.click(), i * 60);
+            setTimeout(() => {
+                target.dispatchEvent(new window.KeyboardEvent('keydown', eventInit));
+                target.dispatchEvent(new window.KeyboardEvent('keyup', eventInit));
+            }, i * 60);
         }
         return true;
     }
@@ -233,6 +255,7 @@
         const ui = getDisneyPlusUiTimeline();
 
         if (ui) {
+            lastKnownDisneyPlusDuration = ui.duration;
             let nativeScale = 1;
             if (range && range.duration > ui.duration * 1.2) {
                 nativeScale = range.duration / ui.duration;
@@ -251,6 +274,17 @@
             };
         }
 
+        if (lastKnownDisneyPlusDuration > 0) {
+            return {
+                start: 0,
+                end: lastKnownDisneyPlusDuration,
+                duration: lastKnownDisneyPlusDuration,
+                current: Number.isFinite(current) ? current : 0,
+                nativeScale: 1,
+                nativeStart: 0
+            };
+        }
+
         if (!range || range.start < 1 || range.duration < 60) return null;
         if (!Number.isFinite(current) || current < range.start - 1 || current > range.end + 1) return null;
         return { ...range, current: Math.max(0, current - range.start), nativeScale: 1, nativeStart: range.start };
diff --git a/scripts/test-content-video-finder.cjs b/scripts/test-content-video-finder.cjs
index b9c5e3c..f7d0bc6 100644
--- a/scripts/test-content-video-finder.cjs
+++ b/scripts/test-content-video-finder.cjs
@@ -91,6 +91,7 @@ function makeNode(attrs = {}, textContent = '') {
 function loadTimelineFns(hostname, document = makeDocument()) {
   return Function('window', 'document', [
     'let lastDisneyPlusTimelineCandidates = [];',
+    'let lastKnownDisneyPlusDuration = 0;',
     extractFunction('hostMatchesUrl', source),
     extractFunction('matchesPlayerUrls', source),
     extractFunction('isDisneyPlusHost', source),

From 32994aaaa5e1e08f133f6745d657f290f08f51e8 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 13:30:20 +0200
Subject: [PATCH 105/151] Support dynamic Disney+ timeline offset/scale caching
 for accurate seek sync

---
 extension/content.js                  | 13 ++++++++++---
 scripts/test-content-video-finder.cjs |  2 ++
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index 95d6dad..22412db 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -60,6 +60,8 @@
     const PAGE_API_SEEK_BRIDGE = 1;
     let lastDisneyPlusTimelineCandidates = [];
     let lastKnownDisneyPlusDuration = 0;
+    let lastKnownDisneyPlusScale = 1;
+    let lastKnownDisneyPlusStart = 0;
 
     function hostMatchesUrl(host, url) {
         const normalized = String(url || '')
@@ -265,6 +267,8 @@
             const nativeStart = Number.isFinite(current)
                 ? current - ui.current * nativeScale
                 : (range ? range.start : 0);
+            lastKnownDisneyPlusScale = nativeScale;
+            lastKnownDisneyPlusStart = nativeStart;
             return {
                 ...(range || {}),
                 current: ui.current,
@@ -275,13 +279,16 @@
         }
 
         if (lastKnownDisneyPlusDuration > 0) {
+            const calculatedCurrent = (Number.isFinite(current) && lastKnownDisneyPlusScale > 0)
+                ? (current - lastKnownDisneyPlusStart) / lastKnownDisneyPlusScale
+                : 0;
             return {
                 start: 0,
                 end: lastKnownDisneyPlusDuration,
                 duration: lastKnownDisneyPlusDuration,
-                current: Number.isFinite(current) ? current : 0,
-                nativeScale: 1,
-                nativeStart: 0
+                current: Math.max(0, Math.min(lastKnownDisneyPlusDuration, calculatedCurrent)),
+                nativeScale: lastKnownDisneyPlusScale,
+                nativeStart: lastKnownDisneyPlusStart
             };
         }
 
diff --git a/scripts/test-content-video-finder.cjs b/scripts/test-content-video-finder.cjs
index f7d0bc6..113f8e6 100644
--- a/scripts/test-content-video-finder.cjs
+++ b/scripts/test-content-video-finder.cjs
@@ -92,6 +92,8 @@ function loadTimelineFns(hostname, document = makeDocument()) {
   return Function('window', 'document', [
     'let lastDisneyPlusTimelineCandidates = [];',
     'let lastKnownDisneyPlusDuration = 0;',
+    'let lastKnownDisneyPlusScale = 1;',
+    'let lastKnownDisneyPlusStart = 0;',
     extractFunction('hostMatchesUrl', source),
     extractFunction('matchesPlayerUrls', source),
     extractFunction('isDisneyPlusHost', source),

From 09d35f3e489e0c80c0724865e265e07def7ef18f Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 13:35:08 +0200
Subject: [PATCH 106/151] TEMPORARY DIAGNOSTICS: Implement Proposal 2 and 3
 logs in Dev tools tab

---
 extension/content.js | 56 ++++++++++++++++++++++++++++++++++++++++++--
 extension/popup.html | 12 ++++++++++
 extension/popup.js   | 12 ++++++++++
 3 files changed, 78 insertions(+), 2 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index 22412db..a36cc7f 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -62,6 +62,7 @@
     let lastKnownDisneyPlusDuration = 0;
     let lastKnownDisneyPlusScale = 1;
     let lastKnownDisneyPlusStart = 0;
+    let videoEventsLog = [];
 
     function hostMatchesUrl(host, url) {
         const normalized = String(url || '')
@@ -1445,6 +1446,8 @@
                     platform,
                     siteQuirk: getSiteQuirkDebug(video),
                     mediaSessionPosition: window.__koalaLastCapturedMediaPosition || null,
+                    scrapedTimestamps: getScrapedTimestamps(),
+                    videoEventsLog: videoEventsLog,
                     allVideos
                 });
             } else {

@@ -1456,7 +1459,9 @@
                     allVideos,

                     url: window.location.href,

                     pageTitle: document.title,
-                    mediaSessionPosition: window.__koalaLastCapturedMediaPosition || null,

+                    mediaSessionPosition: window.__koalaLastCapturedMediaPosition || null,
+                    scrapedTimestamps: getScrapedTimestamps(),
+                    videoEventsLog: videoEventsLog,

                     metadata: (navigator.mediaSession && navigator.mediaSession.metadata) ? {

                         title: navigator.mediaSession.metadata.title,

                         artist: navigator.mediaSession.metadata.artist,

@@ -1674,6 +1679,46 @@
         checkEpisodeTransition();

     };

 

+    function getScrapedTimestamps() {
+        if (typeof document === 'undefined') return [];
+        try {
+            const elms = Array.from(document.querySelectorAll('div,span,p,button,a,[role="button"]'));
+            const unique = new Set();
+            const results = [];
+            for (const el of elms) {
+                if (el.children.length > 3) continue;
+                const txt = (el.textContent || '').trim();
+                if (!txt || txt.length > 50) continue;
+                if (unique.has(txt)) continue;
+                const match = txt.match(/(\d{1,2}:)?\d{1,2}:\d{2}/);
+                if (match) {
+                    unique.add(txt);
+                    const tag = el.tagName.toLowerCase();
+                    const cls = el.className ? `.${el.className.split(' ')[0]}` : '';
+                    results.push(`${tag}${cls}: "${txt}"`);
+                }
+            }
+            return results.slice(0, 15);
+        } catch (_e) {
+            return [];
+        }
+    }
+
+    function logVideoEvent(name, video) {
+        try {
+            const time = Number.isFinite(video?.currentTime) ? video.currentTime.toFixed(2) : '?';
+            const dur = Number.isFinite(video?.duration) ? video.duration.toFixed(2) : '?';
+            const timeStr = new Date().toTimeString().split(' ')[0];
+            const msg = `[${timeStr}] ${name} (t=${time}s, d=${dur}s)`;
+            videoEventsLog.unshift(msg);
+            if (videoEventsLog.length > 15) {
+                videoEventsLog.pop();
+            }
+        } catch (_e) {
+            // safe
+        }
+    }
+
     function setupListeners() {

         const video = findVideo();

         if (video) {

@@ -1688,7 +1733,14 @@
                 video.removeEventListener('loadeddata', existing.loadeddata);

                 if (existing.waiting) video.removeEventListener('waiting', existing.waiting);

             }

-            video._koalaHandlers = { play: handlePlay, pause: handlePause, seeked: handleSeeked, loadeddata: handleLoadedData, waiting: handleWaiting };

+            video._koalaHandlers = { play: handlePlay, pause: handlePause, seeked: handleSeeked, loadeddata: handleLoadedData, waiting: handleWaiting };
+            if (!video._koalaLoggingAttached) {
+                video._koalaLoggingAttached = true;
+                const logEvents = ['play', 'pause', 'seeking', 'seeked', 'durationchange', 'ratechange', 'volumechange', 'waiting', 'playing'];
+                logEvents.forEach(evt => {
+                    video.addEventListener(evt, () => logVideoEvent(evt.toUpperCase(), video));
+                });
+            }

 

             video.addEventListener('play', handlePlay);

             video.addEventListener('pause', handlePause);

diff --git a/extension/popup.html b/extension/popup.html
index df2188c..b84debb 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -700,6 +700,18 @@
             <button id="remoteSeekForward" class="secondary" style="flex:1; font-size:12px;">+30s</button>
         </div>
         <button id="remoteSeekFiveMin" class="secondary" style="width:100%; font-size:12px; margin-bottom:15px;">Seek 5:00</button>
+        <div style="margin-top: 15px;">
+            <label style="font-size:10px; font-weight:700; text-transform:uppercase; letter-spacing:0.5px;">DOM Timestamps (Scraped)</label>
+            <div class="info-card" id="devtoolsDomScraperList" style="font-size:10px; max-height:100px; overflow-y:auto; font-family:monospace; line-height:1.2; padding:6px; background:rgba(0,0,0,0.2); white-space:pre-wrap; border: 1px solid #334155;">
+                No timestamps scraped.
+            </div>
+        </div>
+        <div style="margin-top: 15px; margin-bottom:15px;">
+            <label style="font-size:10px; font-weight:700; text-transform:uppercase; letter-spacing:0.5px;">Video Event Log</label>
+            <div class="info-card" id="devtoolsVideoEventLogList" style="font-size:10px; max-height:150px; overflow-y:auto; font-family:monospace; line-height:1.2; padding:6px; background:rgba(0,0,0,0.2); white-space:pre-wrap; border: 1px solid #334155;">
+                No events logged.
+            </div>
+        </div>
         <div style="font-size:10px; color:var(--text-muted); text-align:center; margin-top:10px; opacity:0.7;">
             Build: <span id="buildIdentifier">__BUILD_TIMESTAMP__</span>
         </div>
diff --git a/extension/popup.js b/extension/popup.js
index cd183f5..765a64e 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -2296,6 +2296,18 @@ function refreshDebugInfo() {
                     const buttons = Array.isArray(quirk.seekButtons) ? quirk.seekButtons.slice(0, 4).join(' | ') : '';
                     if (buttons) addField(`${label} Buttons`, buttons);
                 }
+                const domScraperEl = document.getElementById('devtoolsDomScraperList');
+                const eventLogEl = document.getElementById('devtoolsVideoEventLogList');
+                if (domScraperEl && state.scrapedTimestamps) {
+                    domScraperEl.textContent = state.scrapedTimestamps.length > 0 
+                        ? state.scrapedTimestamps.join('\n') 
+                        : 'No timestamps scraped.';
+                }
+                if (eventLogEl && state.videoEventsLog) {
+                    eventLogEl.textContent = state.videoEventsLog.length > 0 
+                        ? state.videoEventsLog.join('\n') 
+                        : 'No events logged.';
+                }
 
                 addSection('Properties');
                 addField('Seeking', String(state.seeking));

From 705fbc146be8038dc549483d9e265a8382befec6 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 13:42:25 +0200
Subject: [PATCH 107/151] TEMPORARY DIAGNOSTICS: Upgrade DOM scraper to support
 Shadow DOM recursion

---
 extension/content.js | 41 ++++++++++++++++++++++++++++-------------
 1 file changed, 28 insertions(+), 13 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index a36cc7f..f7fb5c0 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -1682,22 +1682,37 @@
     function getScrapedTimestamps() {
         if (typeof document === 'undefined') return [];
         try {
-            const elms = Array.from(document.querySelectorAll('div,span,p,button,a,[role="button"]'));
-            const unique = new Set();
             const results = [];
-            for (const el of elms) {
-                if (el.children.length > 3) continue;
-                const txt = (el.textContent || '').trim();
-                if (!txt || txt.length > 50) continue;
-                if (unique.has(txt)) continue;
-                const match = txt.match(/(\d{1,2}:)?\d{1,2}:\d{2}/);
-                if (match) {
-                    unique.add(txt);
-                    const tag = el.tagName.toLowerCase();
-                    const cls = el.className ? `.${el.className.split(' ')[0]}` : '';
-                    results.push(`${tag}${cls}: "${txt}"`);
+            const unique = new Set();
+
+            function scan(node) {
+                if (!node) return;
+                if (node.querySelectorAll) {
+                    const elms = Array.from(node.querySelectorAll('div,span,p,button,a,[role="button"]'));
+                    for (const el of elms) {
+                        if (el.children.length > 3) continue;
+                        const txt = (el.textContent || '').trim();
+                        if (!txt || txt.length > 50) continue;
+                        if (unique.has(txt)) continue;
+                        const match = txt.match(/(\d{1,2}:)?\d{1,2}:\d{2}/);
+                        if (match) {
+                            unique.add(txt);
+                            const tag = el.tagName.toLowerCase();
+                            const cls = el.className ? `.${el.className.split(' ')[0]}` : '';
+                            results.push(`${tag}${cls}: "${txt}"`);
+                        }
+                    }
+                }
+                const children = node.childNodes || [];
+                for (let i = 0; i < children.length; i++) {
+                    scan(children[i]);
+                }
+                if (node.shadowRoot) {
+                    scan(node.shadowRoot);
                 }
             }
+
+            scan(document.body);
             return results.slice(0, 15);
         } catch (_e) {
             return [];

From a9f5c0b9bff4d4b53b6c75a00ffde9c7cbd78a1f Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 13:45:36 +0200
Subject: [PATCH 108/151] TEMPORARY DIAGNOSTICS: Integrate
 querySelectorAllShadow in Disney+ specific functions

---
 extension/content.js                  | 89 ++++++++++++++++++---------
 scripts/test-content-video-finder.cjs |  2 +
 2 files changed, 63 insertions(+), 28 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index f7fb5c0..93442af 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -140,7 +140,7 @@
             'p',
             'div'
         ].join(',');
-        const nodes = Array.from(document.querySelectorAll(selectors)).slice(0, 2000);
+        const nodes = querySelectorAllShadow(selectors).slice(0, 2000);
         const textParts = [];
         const candidates = [];
         let best = null;
@@ -199,7 +199,7 @@
 
     function getDisneyPlusSeekButtonLabels() {
         if (!isDisneyPlusHost() || typeof document === 'undefined') return [];
-        return Array.from(document.querySelectorAll('button,[role="button"]'))
+        return querySelectorAllShadow('button,[role="button"]')
             .map(getElementLabel)
             .filter(Boolean)
             .slice(0, 20);
@@ -208,7 +208,7 @@
     function clickDisneyPlusRelativeSeek(delta) {
         if (!isDisneyPlusHost() || !Number.isFinite(delta) || Math.abs(delta) < 1 || typeof document === 'undefined') return false;
         const backward = delta < 0;
-        const candidates = Array.from(document.querySelectorAll('button,[role="button"]'));
+        const candidates = querySelectorAllShadow('button,[role="button"]');
         const backRe = /rewind|backward|back\b|zurück|zurueck|rück|rueck|retour|recul|retroced|atrás|voltar|indietro/i;
         const forwardRe = /forward|ahead|skip|vorwärts|vorwaerts|vorsp|weiter|avancer|adelant|avançar|avancar|avanti/i;
         const timeRe = /\b(5|10|15|30)\b|sec|sek|second/i;
@@ -1679,40 +1679,73 @@
         checkEpisodeTransition();

     };

 

+    function scanShadowDom(node, callback) {
+        if (!node) return;
+        callback(node);
+        const children = node.childNodes || [];
+        for (let i = 0; i < children.length; i++) {
+            scanShadowDom(children[i], callback);
+        }
+        if (node.shadowRoot) {
+            scanShadowDom(node.shadowRoot, callback);
+        }
+    }
+
+    function querySelectorAllShadow(selector) {
+        if (typeof document === 'undefined') return [];
+        if (!document.body && typeof document.querySelectorAll === 'function') {
+            try {
+                return Array.from(document.querySelectorAll(selector));
+            } catch (_e) {
+                return [];
+            }
+        }
+        const results = [];
+        scanShadowDom(document.body || document, (node) => {
+            if (node.nodeType === 1 && typeof node.matches === 'function' && node.matches(selector)) {
+                results.push(node);
+            }
+        });
+        return results;
+    }
+
     function getScrapedTimestamps() {
         if (typeof document === 'undefined') return [];
         try {
             const results = [];
             const unique = new Set();
 
-            function scan(node) {
-                if (!node) return;
-                if (node.querySelectorAll) {
-                    const elms = Array.from(node.querySelectorAll('div,span,p,button,a,[role="button"]'));
-                    for (const el of elms) {
-                        if (el.children.length > 3) continue;
-                        const txt = (el.textContent || '').trim();
-                        if (!txt || txt.length > 50) continue;
-                        if (unique.has(txt)) continue;
-                        const match = txt.match(/(\d{1,2}:)?\d{1,2}:\d{2}/);
-                        if (match) {
-                            unique.add(txt);
-                            const tag = el.tagName.toLowerCase();
-                            const cls = el.className ? `.${el.className.split(' ')[0]}` : '';
-                            results.push(`${tag}${cls}: "${txt}"`);
-                        }
+            scanShadowDom(document.body, (node) => {
+                if (node.nodeType !== 1) return;
+                
+                const txt = (node.textContent || '').trim();
+                if (txt && txt.length < 50 && !unique.has(txt)) {
+                    const match = txt.match(/(\d{1,2}:)?\d{1,2}:\d{2}/);
+                    if (match) {
+                        unique.add(txt);
+                        const tag = node.tagName.toLowerCase();
+                        const cls = node.className ? `.${node.className.split(' ')[0]}` : '';
+                        results.push(`${tag}${cls}: "${txt}"`);
                     }
                 }
-                const children = node.childNodes || [];
-                for (let i = 0; i < children.length; i++) {
-                    scan(children[i]);
-                }
-                if (node.shadowRoot) {
-                    scan(node.shadowRoot);
-                }
-            }
 
-            scan(document.body);
+                const isSlider = node.getAttribute('role') === 'slider' || 
+                                 node.getAttribute('role') === 'progressbar' ||
+                                 node.hasAttribute('aria-valuenow') ||
+                                 node.tagName.toLowerCase() === 'progress' ||
+                                 (node.tagName.toLowerCase() === 'input' && node.type === 'range');
+                
+                if (isSlider) {
+                    const tag = node.tagName.toLowerCase();
+                    const cls = node.className ? `.${node.className.split(' ')[0]}` : '';
+                    const now = node.getAttribute('aria-valuenow') || node.value || '?';
+                    const max = node.getAttribute('aria-valuemax') || node.max || '?';
+                    const text = node.getAttribute('aria-valuetext') || '?';
+                    const width = node.style?.width || '?';
+                    results.push(`[SLIDER] ${tag}${cls}: now=${now}, max=${max}, text="${text}", width=${width}`);
+                }
+            });
+
             return results.slice(0, 15);
         } catch (_e) {
             return [];
diff --git a/scripts/test-content-video-finder.cjs b/scripts/test-content-video-finder.cjs
index 113f8e6..453995f 100644
--- a/scripts/test-content-video-finder.cjs
+++ b/scripts/test-content-video-finder.cjs
@@ -94,6 +94,8 @@ function loadTimelineFns(hostname, document = makeDocument()) {
     'let lastKnownDisneyPlusDuration = 0;',
     'let lastKnownDisneyPlusScale = 1;',
     'let lastKnownDisneyPlusStart = 0;',
+    extractFunction('scanShadowDom', source),
+    extractFunction('querySelectorAllShadow', source),
     extractFunction('hostMatchesUrl', source),
     extractFunction('matchesPlayerUrls', source),
     extractFunction('isDisneyPlusHost', source),

From 51da169d6911a68ddaf3bd0b08c82700c24e6193 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 14:18:50 +0200
Subject: [PATCH 109/151] Remove temporary Media Session interceptor and Video
 Event Log diagnostics

Clean up the exploratory Disney+ diagnostics now that the Shadow DOM
timeline/seek integration is in place:

- Remove Proposal 1 (Media Session interceptor): the background.js
  interceptor injection and the content.js message listener capturing
  __koalaMediaSessionCapture, plus the now-unused mediaSessionPosition
  reporting in content.js and popup.js.
- Remove Proposal 3 (Video Event Log): videoEventsLog, logVideoEvent(),
  the per-video event logging listeners, and the popup.html/popup.js UI.
- Keep Proposal 2 (DOM timestamp scraper) for ongoing diagnostics.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/background.js | 50 -----------------------------------------
 extension/content.js    | 36 -----------------------------
 extension/popup.html    |  6 -----
 extension/popup.js      | 14 ++----------
 4 files changed, 2 insertions(+), 104 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index a33ca9c..54da4ae 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1654,42 +1654,6 @@ async function devRemoteToolsAllowed() {
     return data.username === 'KoalaDev';
 }
 
-const mediaSessionInterceptorHosts = [
-    'disneyplus.com'
-];
-
-function shouldInstallMediaSessionInterceptor(url) {
-    try {
-        const host = new URL(url).hostname.toLowerCase();
-        return mediaSessionInterceptorHosts.some(h => host === h || host.endsWith('.' + h));
-    } catch (_e) {
-        return false;
-    }
-}
-
-function installMediaSessionInterceptor() {
-    if (window.__koalaMediaSessionInterceptorInstalled) return;
-    window.__koalaMediaSessionInterceptorInstalled = true;
-    if (!navigator.mediaSession || typeof navigator.mediaSession.setPositionState !== 'function') return;
-
-    const originalSet = navigator.mediaSession.setPositionState;
-    navigator.mediaSession.setPositionState = function(state) {
-        try {
-            window.postMessage({
-                __koalaMediaSessionCapture: 1,
-                state: {
-                    duration: state?.duration,
-                    playbackRate: state?.playbackRate,
-                    position: state?.position
-                }
-            }, '*');
-        } catch (_e) {
-            // Suppress errors to not interfere with player
-        }
-        return originalSet.apply(navigator.mediaSession, arguments);
-    };
-}
-
 function shouldUsePageApiSeek(url) {
     return typeof globalThis.koalaFindPageApiSeekProvider === 'function' &&
         !!globalThis.koalaFindPageApiSeekProvider(url);
@@ -1733,12 +1697,10 @@ function setPageApiSeekEnabled(enabled) {
 async function injectContentScript(tabId) {
     let needsPageApiSeek = false;
     let pageApiSeekReady = false;
-    let isMediaSessionCapable = false;
     try {
         const tab = await chrome.tabs.get(tabId);
         const url = tab?.url || '';
         needsPageApiSeek = shouldUsePageApiSeek(url);
-        isMediaSessionCapable = shouldInstallMediaSessionInterceptor(url);
     } catch (_e) {
         // Fall through to the generic content script injection.
     }
@@ -1761,18 +1723,6 @@ async function injectContentScript(tabId) {
         }
     }
 
-    if (isMediaSessionCapable) {
-        try {
-            await chrome.scripting.executeScript({
-                target: { tabId },
-                world: 'MAIN',
-                func: installMediaSessionInterceptor
-            });
-        } catch (err) {
-            addLog(`Media Session interceptor injection failed: ${err.message}`, 'warn');
-        }
-    }
-
     await chrome.scripting.executeScript({
         target: { tabId },
         files: ['page-api-seek-overrides.js']
diff --git a/extension/content.js b/extension/content.js
index 93442af..c7cbb76 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -62,7 +62,6 @@
     let lastKnownDisneyPlusDuration = 0;
     let lastKnownDisneyPlusScale = 1;
     let lastKnownDisneyPlusStart = 0;
-    let videoEventsLog = [];
 
     function hostMatchesUrl(host, url) {
         const normalized = String(url || '')
@@ -1445,9 +1444,7 @@
                     inShadowDom,

                     platform,
                     siteQuirk: getSiteQuirkDebug(video),
-                    mediaSessionPosition: window.__koalaLastCapturedMediaPosition || null,
                     scrapedTimestamps: getScrapedTimestamps(),
-                    videoEventsLog: videoEventsLog,
                     allVideos
                 });
             } else {

@@ -1459,9 +1456,7 @@
                     allVideos,

                     url: window.location.href,

                     pageTitle: document.title,
-                    mediaSessionPosition: window.__koalaLastCapturedMediaPosition || null,
                     scrapedTimestamps: getScrapedTimestamps(),
-                    videoEventsLog: videoEventsLog,

                     metadata: (navigator.mediaSession && navigator.mediaSession.metadata) ? {

                         title: navigator.mediaSession.metadata.title,

                         artist: navigator.mediaSession.metadata.artist,

@@ -1752,21 +1747,6 @@
         }
     }
 
-    function logVideoEvent(name, video) {
-        try {
-            const time = Number.isFinite(video?.currentTime) ? video.currentTime.toFixed(2) : '?';
-            const dur = Number.isFinite(video?.duration) ? video.duration.toFixed(2) : '?';
-            const timeStr = new Date().toTimeString().split(' ')[0];
-            const msg = `[${timeStr}] ${name} (t=${time}s, d=${dur}s)`;
-            videoEventsLog.unshift(msg);
-            if (videoEventsLog.length > 15) {
-                videoEventsLog.pop();
-            }
-        } catch (_e) {
-            // safe
-        }
-    }
-
     function setupListeners() {

         const video = findVideo();

         if (video) {

@@ -1782,14 +1762,6 @@
                 if (existing.waiting) video.removeEventListener('waiting', existing.waiting);

             }

             video._koalaHandlers = { play: handlePlay, pause: handlePause, seeked: handleSeeked, loadeddata: handleLoadedData, waiting: handleWaiting };
-            if (!video._koalaLoggingAttached) {
-                video._koalaLoggingAttached = true;
-                const logEvents = ['play', 'pause', 'seeking', 'seeked', 'durationchange', 'ratechange', 'volumechange', 'waiting', 'playing'];
-                logEvents.forEach(evt => {
-                    video.addEventListener(evt, () => logVideoEvent(evt.toUpperCase(), video));
-                });
-            }

-

             video.addEventListener('play', handlePlay);

             video.addEventListener('pause', handlePause);

             video.addEventListener('seeked', handleSeeked);

@@ -1947,14 +1919,6 @@
         }

     });

 

-    window.addEventListener('message', (event) => {
-        if (event.source !== window) return;
-        const data = event.data;
-        if (data && data.__koalaMediaSessionCapture === 1) {
-            window.__koalaLastCapturedMediaPosition = data.state;
-        }
-    });
-
     // Pull localized strings for the in-page dialog/badge (English fallback above).

     chrome.runtime.sendMessage({ type: 'GET_HCM_STRINGS' }, (res) => {

         if (chrome.runtime.lastError || !res) return;

diff --git a/extension/popup.html b/extension/popup.html
index b84debb..8a792e9 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -706,12 +706,6 @@
                 No timestamps scraped.
             </div>
         </div>
-        <div style="margin-top: 15px; margin-bottom:15px;">
-            <label style="font-size:10px; font-weight:700; text-transform:uppercase; letter-spacing:0.5px;">Video Event Log</label>
-            <div class="info-card" id="devtoolsVideoEventLogList" style="font-size:10px; max-height:150px; overflow-y:auto; font-family:monospace; line-height:1.2; padding:6px; background:rgba(0,0,0,0.2); white-space:pre-wrap; border: 1px solid #334155;">
-                No events logged.
-            </div>
-        </div>
         <div style="font-size:10px; color:var(--text-muted); text-align:center; margin-top:10px; opacity:0.7;">
             Build: <span id="buildIdentifier">__BUILD_TIMESTAMP__</span>
         </div>
diff --git a/extension/popup.js b/extension/popup.js
index 765a64e..0917a3e 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -2283,10 +2283,6 @@ function refreshDebugInfo() {
                 if (state.nativeCurrentTime != null || state.nativeDuration != null) {
                     addField('Native Time', `${state.nativeCurrentTime ?? '?'}s / ${state.nativeDuration ?? '?'}s`);
                 }
-                if (state.mediaSessionPosition) {
-                    const pos = state.mediaSessionPosition;
-                    addField('MediaSession Captured', `${pos.position ?? '?'}s / ${pos.duration ?? '?'}s (@ ${pos.playbackRate ?? 1}x)`, '#a855f7');
-                }
                 if (state.siteQuirk) {
                     const quirk = state.siteQuirk;
                     const label = quirk.name || quirk.key || 'Site';
@@ -2297,17 +2293,11 @@ function refreshDebugInfo() {
                     if (buttons) addField(`${label} Buttons`, buttons);
                 }
                 const domScraperEl = document.getElementById('devtoolsDomScraperList');
-                const eventLogEl = document.getElementById('devtoolsVideoEventLogList');
                 if (domScraperEl && state.scrapedTimestamps) {
-                    domScraperEl.textContent = state.scrapedTimestamps.length > 0 
-                        ? state.scrapedTimestamps.join('\n') 
+                    domScraperEl.textContent = state.scrapedTimestamps.length > 0
+                        ? state.scrapedTimestamps.join('\n')
                         : 'No timestamps scraped.';
                 }
-                if (eventLogEl && state.videoEventsLog) {
-                    eventLogEl.textContent = state.videoEventsLog.length > 0 
-                        ? state.videoEventsLog.join('\n') 
-                        : 'No events logged.';
-                }
 
                 addSection('Properties');
                 addField('Seeking', String(state.seeking));

From 8fe1c6dfbc4a6e0ff03f982b185f9be220a2adb4 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 14:26:53 +0200
Subject: [PATCH 110/151] Fix laggy Disney+ time by preferring the live "time
 remaining" indicator
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Disney+ throttles the scrubber slider's aria-valuenow, so it can lag real
playback by several seconds (and its value snaps back when the control
overlay reappears on pause). The player's "time remaining" indicator,
however, updates live.

getDisneyPlusUiTimeline() now captures any element whose class/testid
mentions "remain", parses its clock text, and — when a reliable duration
is known — derives current = duration - remaining and prefers it over the
laggy slider value. Falls back to the previous behavior when no remaining
indicator is present.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/content.js | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/extension/content.js b/extension/content.js
index c7cbb76..115f08f 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -144,6 +144,7 @@
         const candidates = [];
         let best = null;
         let bestScore = -1;
+        let remainingSeconds = null;
 
         function considerTimeline(parsed, source, weight = 0) {
             if (!parsed) return;
@@ -175,9 +176,24 @@
                 const parsed = parseTimelineText(text);
                 considerTimeline(parsed, 'text', 100);
                 textParts.push(text);
+            }
+            // Disney's scrubber aria-valuenow can lag several seconds behind
+            // real playback; a "time remaining" indicator updates live, so
+            // capture it and later derive current = duration - remaining.
+            const remClass = String(node.getAttribute?.('class') || '') + ' ' + String(node.getAttribute?.('data-testid') || '');
+            if (/remain/i.test(remClass)) {
+                const remMatch = String(node.textContent || '').match(/\d{1,3}:\d{2}(?::\d{2})?/);
+                const rem = remMatch ? parseClockTime(remMatch[0]) : null;
+                if (Number.isFinite(rem) && rem >= 0) remainingSeconds = rem;
             }
         }
 
+        if (best && remainingSeconds !== null && best.duration > 0) {
+            const liveCurrent = best.duration - remainingSeconds;
+            if (liveCurrent >= 0 && liveCurrent <= best.duration + 5) {
+                considerTimeline({ current: Math.min(liveCurrent, best.duration), duration: best.duration }, 'time-remaining', 1000);
+            }
+        }
         considerTimeline(parseTimelineText(textParts.join(' ')), 'combined-text', 25);
         lastDisneyPlusTimelineCandidates = candidates
             .sort((a, b) => b.score - a.score)

From 2fbcbc4f83dcdf7c109c6b83c79adb17897a52e6 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 14:38:26 +0200
Subject: [PATCH 111/151] Harden Disney+ time fallback against <video> element
 recreation

When the control overlay (and its live time readout) is briefly absent,
the old fallback recomputed the timeline from the raw blob-relative
video.currentTime via a cached scale/start. Disney recreates the <video>
element on some play/pause transitions, which resets currentTime, so that
math produced a wildly wrong time ("loses the time" after a pause).

The native clock advances 1:1 with real playback, so instead anchor the
last live UI position to video.currentTime and extrapolate by the elapsed
native delta. If the delta is negative or implausibly large (element
recreated / seek), freeze at the last known position rather than emitting
a garbage time.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/content.js                  | 37 ++++++++++++++++++---------
 scripts/test-content-video-finder.cjs |  2 ++
 2 files changed, 27 insertions(+), 12 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index 115f08f..e8b9c96 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -62,6 +62,8 @@
     let lastKnownDisneyPlusDuration = 0;
     let lastKnownDisneyPlusScale = 1;
     let lastKnownDisneyPlusStart = 0;
+    let lastDisneyPlusUiCurrent = null;
+    let lastDisneyPlusNativeAtUi = null;
 
     function hostMatchesUrl(host, url) {
         const normalized = String(url || '')
@@ -285,6 +287,8 @@
                 : (range ? range.start : 0);
             lastKnownDisneyPlusScale = nativeScale;
             lastKnownDisneyPlusStart = nativeStart;
+            lastDisneyPlusUiCurrent = ui.current;
+            lastDisneyPlusNativeAtUi = Number.isFinite(current) ? current : null;
             return {
                 ...(range || {}),
                 current: ui.current,
@@ -294,18 +298,27 @@
             };
         }
 
-        if (lastKnownDisneyPlusDuration > 0) {
-            const calculatedCurrent = (Number.isFinite(current) && lastKnownDisneyPlusScale > 0)
-                ? (current - lastKnownDisneyPlusStart) / lastKnownDisneyPlusScale
-                : 0;
-            return {
-                start: 0,
-                end: lastKnownDisneyPlusDuration,
-                duration: lastKnownDisneyPlusDuration,
-                current: Math.max(0, Math.min(lastKnownDisneyPlusDuration, calculatedCurrent)),
-                nativeScale: lastKnownDisneyPlusScale,
-                nativeStart: lastKnownDisneyPlusStart
-            };
+        // No live UI readout (control overlay hidden or mid-rebuild). Extrapolate
+        // from the last live UI position using the native clock, which advances 1:1
+        // with real playback. Disney recreates the <video> on some play/pause
+        // transitions, which resets currentTime; if the native clock jumped back or
+        // leapt implausibly, freeze at the last known position instead of a garbage time.
+        if (lastDisneyPlusUiCurrent !== null && lastKnownDisneyPlusDuration > 0) {
+            let estimated = lastDisneyPlusUiCurrent;
+            if (Number.isFinite(current) && lastDisneyPlusNativeAtUi !== null) {
+                const delta = current - lastDisneyPlusNativeAtUi;
+                if (delta >= 0 && delta < 60) {
+                    estimated = lastDisneyPlusUiCurrent + delta;
+                }
+            }
+            return {
+                start: 0,
+                end: lastKnownDisneyPlusDuration,
+                duration: lastKnownDisneyPlusDuration,
+                current: Math.max(0, Math.min(lastKnownDisneyPlusDuration, estimated)),
+                nativeScale: lastKnownDisneyPlusScale,
+                nativeStart: lastKnownDisneyPlusStart
+            };
         }
 
         if (!range || range.start < 1 || range.duration < 60) return null;
diff --git a/scripts/test-content-video-finder.cjs b/scripts/test-content-video-finder.cjs
index 453995f..804e2f3 100644
--- a/scripts/test-content-video-finder.cjs
+++ b/scripts/test-content-video-finder.cjs
@@ -94,6 +94,8 @@ function loadTimelineFns(hostname, document = makeDocument()) {
     'let lastKnownDisneyPlusDuration = 0;',
     'let lastKnownDisneyPlusScale = 1;',
     'let lastKnownDisneyPlusStart = 0;',
+    'let lastDisneyPlusUiCurrent = null;',
+    'let lastDisneyPlusNativeAtUi = null;',
     extractFunction('scanShadowDom', source),
     extractFunction('querySelectorAllShadow', source),
     extractFunction('hostMatchesUrl', source),

From 236da46f5dd7cdcd0264684132548fe815ba59b1 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 14:45:12 +0200
Subject: [PATCH 112/151] Lift the 120s cap on Disney+ relative-seek so large
 seeks reach target
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Disney+ has no absolute seek on its blob <video>, so absolute seeks are
translated into repeated clicks of the player's relative skip button. The
click count was capped at 12 (=120s at 10s/step), so any seek further than
two minutes away silently landed short — breaking absolute-position sync
(e.g. syncing to 5:00 from far away never arrived).

Derive the step size from the matched button's own label (10s default,
some UIs use 5/15/30) and issue enough clicks to cover the full delta,
bounded at a sane maximum.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/content.js | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index e8b9c96..02a749c 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -239,12 +239,19 @@
             return backward ? backRe.test(label) : forwardRe.test(label);
         });
 
-        if (button && typeof button.click === 'function') {
-            const clicks = Math.max(1, Math.min(12, Math.round(Math.abs(delta) / 10)));
-            for (let i = 0; i < clicks; i++) {
-                setTimeout(() => button.click(), i * 60);
-            }
-            return true;
+        if (button && typeof button.click === 'function') {
+            // Disney offers no absolute seek on its blob <video>, so we click its
+            // relative skip button. Derive the step from the button's own label
+            // (usually 10s; some UIs 5/15/30) and issue enough clicks to cover the
+            // full delta. The previous 120s cap truncated any larger seek, which
+            // broke absolute-position sync (e.g. seeking to 5:00 from far away).
+            const stepMatch = getElementLabel(button).match(/\b(5|10|15|30)\b/);
+            const step = stepMatch ? Number(stepMatch[1]) : 10;
+            const clicks = Math.max(1, Math.min(90, Math.round(Math.abs(delta) / step)));
+            for (let i = 0; i < clicks; i++) {
+                setTimeout(() => button.click(), i * 60);
+            }
+            return true;
         }
 
         // Fallback: Simulate ArrowLeft / ArrowRight keyboard events

From 076157fef1c3e1a6aa83ac8dae301a9ec219a3c1 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 14:56:02 +0200
Subject: [PATCH 113/151] Sync Disney+ via the page media player API (precise
 time + seek)

Disney+'s <video> is blob-relative (unusable as an absolute clock) and its
scrubber aria-value freezes during playback, so DOM scraping lagged and the
+/-10s button seek could neither reach far targets nor land precisely. The
real player hangs off the <disney-web-player> custom element as
`.mediaPlayer`, exposing seek(ms) and timeline.info (playhead/duration ms).

Since the isolated content world can't read that page object, route it
through the existing MAIN-world page-API bridge (as Netflix already does):

- page-api-seek-overrides.js: register a 'disney' provider.
- background.js installPageApiSeekBridge: seek Disney via mediaPlayer.seek(),
  and post the exact playhead/duration (seconds) to the content world every
  250ms. Both are gated on provider === 'disney'; Netflix path unchanged.
- content.js: cache the pushed playhead, prefer it in getDisneyPlusTimeline
  (DOM scraping stays as fallback), and check the page-API seek first in
  seekVideo. Outcome is identical for Netflix and generic sites.

Verified live on Disney+: reported time matches the player exactly and
seek lands within ~1s of the target.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 extension/background.js               | 41 +++++++++++++++-
 extension/content.js                  | 67 ++++++++++++++++++---------
 extension/page-api-seek-overrides.js  |  5 ++
 scripts/test-content-video-finder.cjs |  1 +
 4 files changed, 90 insertions(+), 24 deletions(-)

diff --git a/extension/background.js b/extension/background.js
index 54da4ae..96972a2 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -1663,10 +1663,22 @@ function installPageApiSeekBridge() {
     if (window.__koalaPageApiSeekBridgeInstalled) return;
     window.__koalaPageApiSeekBridgeInstalled = true;
 
-    function seekWithPageApi(time) {
-        const match = typeof window.koalaFindPageApiSeekProvider === 'function'
+    function currentMatch() {
+        return typeof window.koalaFindPageApiSeekProvider === 'function'
             ? window.koalaFindPageApiSeekProvider(window.location.hostname)
             : null;
+    }
+
+    // Disney+ ("hive"/BAM) player: the real media player hangs off the
+    // <disney-web-player> custom element as `.mediaPlayer`, exposing precise
+    // seek(ms) and timeline.info (playhead/duration in ms).
+    function disneyMediaPlayer() {
+        const el = document.querySelector('disney-web-player');
+        return el && el.mediaPlayer ? el.mediaPlayer : null;
+    }
+
+    function seekWithPageApi(time) {
+        const match = currentMatch();
         if (!match) return;
 
         try {
@@ -1676,6 +1688,9 @@ function installPageApiSeekBridge() {
                 const sessionId = ids ? ids[0] : null;
                 const player = sessionId ? videoPlayer.getVideoPlayerBySessionId(sessionId) : null;
                 player?.seek(Math.round(time * 1000));
+            } else if (match.provider === 'disney') {
+                const mp = disneyMediaPlayer();
+                if (mp && typeof mp.seek === 'function') mp.seek(Math.round(time * 1000));
             }
         } catch (_e) {
             // Player not ready or private API changed; the next sync tick can retry.
@@ -1688,6 +1703,28 @@ function installPageApiSeekBridge() {
         if (!data || data.__koalaPageApiSeek !== 1 || data.kind !== 'seek' || typeof data.time !== 'number') return;
         seekWithPageApi(data.time);
     });
+
+    // Disney+'s <video> currentTime is blob-relative and its scrubber lags, so
+    // the isolated-world content script can't read an accurate position. Push
+    // the real playhead/duration (seconds) from the page's media player.
+    setInterval(() => {
+        try {
+            const match = currentMatch();
+            if (!match || match.provider !== 'disney') return;
+            const mp = disneyMediaPlayer();
+            const info = mp && mp.timeline && mp.timeline.info;
+            if (!info || typeof info.playheadPositionMs !== 'number' || typeof info.programDurationMs !== 'number') return;
+            if (info.programDurationMs <= 0) return;
+            window.postMessage({
+                __koalaPlayerTime: 1,
+                provider: 'disney',
+                position: info.playheadPositionMs / 1000,
+                duration: info.programDurationMs / 1000
+            }, '*');
+        } catch (_e) {
+            // Ignore transient errors (player teardown / element swap).
+        }
+    }, 250);
 }
 
 function setPageApiSeekEnabled(enabled) {
diff --git a/extension/content.js b/extension/content.js
index 02a749c..2128e7a 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -63,7 +63,21 @@
     let lastKnownDisneyPlusScale = 1;
     let lastKnownDisneyPlusStart = 0;
     let lastDisneyPlusUiCurrent = null;
-    let lastDisneyPlusNativeAtUi = null;
+    let lastDisneyPlusNativeAtUi = null;
+    // Accurate Disney+ playhead pushed by the MAIN-world page-API bridge
+    // (background.js installPageApiSeekBridge). The isolated content world
+    // can't read the page's media player directly.
+    let disneyPageApiTime = null;
+    if (typeof window !== 'undefined' && typeof window.addEventListener === 'function') {
+        window.addEventListener('message', (event) => {
+            if (event.source !== window) return;
+            const data = event.data;
+            if (data && data.__koalaPlayerTime === 1 && data.provider === 'disney'
+                && Number.isFinite(data.position) && Number.isFinite(data.duration) && data.duration > 0) {
+                disneyPageApiTime = { position: data.position, duration: data.duration, at: Date.now() };
+            }
+        });
+    }
 
     function hostMatchesUrl(host, url) {
         const normalized = String(url || '')
@@ -276,7 +290,14 @@
     }
 
     function getDisneyPlusTimeline(video) {
-        if (!isDisneyPlusHost()) return null;
+        if (!isDisneyPlusHost()) return null;
+        // Preferred: exact playhead/duration from the page media player,
+        // relayed by the MAIN-world bridge. Authoritative while fresh.
+        if (disneyPageApiTime && (Date.now() - disneyPageApiTime.at) < 2000 && disneyPageApiTime.duration > 0) {
+            lastKnownDisneyPlusDuration = disneyPageApiTime.duration;
+            const cur = Math.max(0, Math.min(disneyPageApiTime.duration, disneyPageApiTime.position));
+            return { start: 0, end: disneyPageApiTime.duration, duration: disneyPageApiTime.duration, current: cur, nativeScale: 1, nativeStart: 0 };
+        }
         const range = getSeekableRange(video);
         const current = video.currentTime;
         const ui = getDisneyPlusUiTimeline();
@@ -398,26 +419,28 @@
             !!window.koalaFindPageApiSeekProvider(window.location.hostname);
     }
 
-    function seekVideo(video, targetTime, relativeDelta = null) {
-        const siteQuirk = getActiveSiteQuirk();
-        let delta = relativeDelta;
-        if (delta === null && siteQuirk) {
-            const current = getSyncCurrentTime(video);
-            if (current !== null) {
-                delta = targetTime - current;
-            }
-        }
-        if (siteQuirk && siteQuirk.clickRelativeSeek(delta)) {
-            expectedSeekTime = null;
-            return;
-        }
-        const nativeTargetTime = toNativeSeekTime(video, targetTime);
-        expectedSeekTime = targetTime;
-        if (shouldUsePageApiSeek()) {
-            window.postMessage({ __koalaPageApiSeek: PAGE_API_SEEK_BRIDGE, kind: 'seek', time: targetTime }, '*');
-            return;
-        }
-        video.currentTime = nativeTargetTime;
+    function seekVideo(video, targetTime, relativeDelta = null) {
+        // Prefer a precise page-level seek API when available (Netflix, Disney+);
+        // for those players the DOM/button seek path is imprecise or impossible.
+        if (shouldUsePageApiSeek()) {
+            expectedSeekTime = targetTime;
+            window.postMessage({ __koalaPageApiSeek: PAGE_API_SEEK_BRIDGE, kind: 'seek', time: targetTime }, '*');
+            return;
+        }
+        const siteQuirk = getActiveSiteQuirk();
+        let delta = relativeDelta;
+        if (delta === null && siteQuirk) {
+            const current = getSyncCurrentTime(video);
+            if (current !== null) {
+                delta = targetTime - current;
+            }
+        }
+        if (siteQuirk && siteQuirk.clickRelativeSeek(delta)) {
+            expectedSeekTime = null;
+            return;
+        }
+        expectedSeekTime = targetTime;
+        video.currentTime = toNativeSeekTime(video, targetTime);
     }
 

     // --- Play/Pause Coalescing (leading + trailing) ---

diff --git a/extension/page-api-seek-overrides.js b/extension/page-api-seek-overrides.js
index 60c9041..7f0c847 100644
--- a/extension/page-api-seek-overrides.js
+++ b/extension/page-api-seek-overrides.js
@@ -4,6 +4,11 @@
             name: 'netflix-page-api-seek',
             urls: ['netflix.com'],
             provider: 'netflix'
+        },
+        {
+            name: 'disney-page-api-seek',
+            urls: ['disneyplus.com'],
+            provider: 'disney'
         }
     ];
 
diff --git a/scripts/test-content-video-finder.cjs b/scripts/test-content-video-finder.cjs
index 804e2f3..2d9ae7a 100644
--- a/scripts/test-content-video-finder.cjs
+++ b/scripts/test-content-video-finder.cjs
@@ -96,6 +96,7 @@ function loadTimelineFns(hostname, document = makeDocument()) {
     'let lastKnownDisneyPlusStart = 0;',
     'let lastDisneyPlusUiCurrent = null;',
     'let lastDisneyPlusNativeAtUi = null;',
+    'let disneyPageApiTime = null;',
     extractFunction('scanShadowDom', source),
     extractFunction('querySelectorAllShadow', source),
     extractFunction('hostMatchesUrl', source),

From 9ac8c28442575cf9eb6016ec273ff0221de22544 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 15:08:54 +0200
Subject: [PATCH 114/151] Remove Disney+ DOM scraping fallback

---
 extension/content.js                  | 405 ++------------------------
 extension/popup.html                  |   6 -
 extension/popup.js                    |   7 -
 scripts/test-content-video-finder.cjs |  61 +---
 4 files changed, 47 insertions(+), 432 deletions(-)

diff --git a/extension/content.js b/extension/content.js
index 2128e7a..adc3e52 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -57,13 +57,7 @@
     let seekDebounceTimer = null;     // debounce timer for rapid seek events

     let expectedSeekTime = null;      // strictly track programmatic seeks

 

-    const PAGE_API_SEEK_BRIDGE = 1;
-    let lastDisneyPlusTimelineCandidates = [];
-    let lastKnownDisneyPlusDuration = 0;
-    let lastKnownDisneyPlusScale = 1;
-    let lastKnownDisneyPlusStart = 0;
-    let lastDisneyPlusUiCurrent = null;
-    let lastDisneyPlusNativeAtUi = null;
+    const PAGE_API_SEEK_BRIDGE = 1;
     // Accurate Disney+ playhead pushed by the MAIN-world page-API bridge
     // (background.js installPageApiSeekBridge). The isolated content world
     // can't read the page's media player directly.
@@ -96,284 +90,34 @@
         return matchesPlayerUrls(['disneyplus.com']);
     }
 
-    function getSeekableRange(video) {
-        try {
-            const ranges = video.seekable;
-            if (!ranges || ranges.length === 0) return null;
-            const current = video.currentTime;
-            let index = ranges.length - 1;
-            if (Number.isFinite(current)) {
-                for (let i = 0; i < ranges.length; i++) {
-                    if (current >= ranges.start(i) && current <= ranges.end(i)) {
-                        index = i;
-                        break;
-                    }
-                }
-            }
-            const start = ranges.start(index);
-            const end = ranges.end(index);
-            if (!Number.isFinite(start) || !Number.isFinite(end) || end <= start) return null;
-            return { start, end, duration: end - start };
-        } catch (_e) {
-            return null;
-        }
-    }
-
-    function parseClockTime(value) {
-        const parts = String(value || '').trim().split(':').map(Number);
-        if (parts.length < 2 || parts.length > 3 || parts.some(n => !Number.isFinite(n))) return null;
-        return parts.length === 2
-            ? parts[0] * 60 + parts[1]
-            : parts[0] * 3600 + parts[1] * 60 + parts[2];
-    }
-
-    function parseTimelineText(text) {
-        const matches = String(text || '').match(/\b\d{1,3}:\d{2}(?::\d{2})?\b/g);
-        if (!matches || matches.length < 2) return null;
-        const current = parseClockTime(matches[0]);
-        const duration = parseClockTime(matches[matches.length - 1]);
-        if (!Number.isFinite(current) || !Number.isFinite(duration) || duration < 60 || current > duration + 5) return null;
-        return { current, duration };
-    }
-
-    function getDisneyPlusUiTimeline() {
-        if (typeof document === 'undefined') return null;
-        const selectors = [
-            '[role="slider"]',
-            '[role="progressbar"]',
-            '[aria-valuenow][aria-valuemax]',
-            '[aria-valuetext]',
-            '[aria-label]',
-            '[data-testid]',
-            '[data-test]',
-            '[class*="time" i]',
-            '[class*="progress" i]',
-            'time',
-            'output',
-            'button',
-            'span',
-            'p',
-            'div'
-        ].join(',');
-        const nodes = querySelectorAllShadow(selectors).slice(0, 2000);
-        const textParts = [];
-        const candidates = [];
-        let best = null;
-        let bestScore = -1;
-        let remainingSeconds = null;
-
-        function considerTimeline(parsed, source, weight = 0) {
-            if (!parsed) return;
-            const score = weight +
-                (parsed.duration >= 20 * 60 ? 200 : 0) +
-                (parsed.current > 0 ? 50 : 0) -
-                Math.abs((parsed.duration / 2) - parsed.current) / 100;
-            candidates.push({ ...parsed, source, score: Math.round(score) });
-            if (score > bestScore) {
-                bestScore = score;
-                best = parsed;
-            }
-        }
-
-        for (const node of nodes) {
-            const now = Number(node.getAttribute?.('aria-valuenow') ?? node.value);
-            const max = Number(node.getAttribute?.('aria-valuemax') ?? node.max);
-            if (Number.isFinite(now) && Number.isFinite(max) && max >= 60 && now >= 0 && now <= max + 5) {
-                considerTimeline({ current: now, duration: max }, 'aria-value', 300);
-            }
-
-            for (const attr of ['aria-valuetext', 'aria-label', 'title', 'data-testid', 'data-test']) {
-                const parsed = parseTimelineText(node.getAttribute?.(attr));
-                considerTimeline(parsed, attr, 200);
-            }
-
-            const text = String(node.textContent || '').trim();
-            if (text && text.length < 200) {
-                const parsed = parseTimelineText(text);
-                considerTimeline(parsed, 'text', 100);
-                textParts.push(text);
-            }
-            // Disney's scrubber aria-valuenow can lag several seconds behind
-            // real playback; a "time remaining" indicator updates live, so
-            // capture it and later derive current = duration - remaining.
-            const remClass = String(node.getAttribute?.('class') || '') + ' ' + String(node.getAttribute?.('data-testid') || '');
-            if (/remain/i.test(remClass)) {
-                const remMatch = String(node.textContent || '').match(/\d{1,3}:\d{2}(?::\d{2})?/);
-                const rem = remMatch ? parseClockTime(remMatch[0]) : null;
-                if (Number.isFinite(rem) && rem >= 0) remainingSeconds = rem;
-            }
-        }
-
-        if (best && remainingSeconds !== null && best.duration > 0) {
-            const liveCurrent = best.duration - remainingSeconds;
-            if (liveCurrent >= 0 && liveCurrent <= best.duration + 5) {
-                considerTimeline({ current: Math.min(liveCurrent, best.duration), duration: best.duration }, 'time-remaining', 1000);
-            }
-        }
-        considerTimeline(parseTimelineText(textParts.join(' ')), 'combined-text', 25);
-        lastDisneyPlusTimelineCandidates = candidates
-            .sort((a, b) => b.score - a.score)
-            .slice(0, 8)
-            .map(({ source, current, duration }) => ({ source, current, duration }));
-        return best;
-    }
-
-    function getElementLabel(el) {
-        return [
-            el.getAttribute?.('aria-label'),
-            el.getAttribute?.('title'),
-            el.getAttribute?.('data-testid'),
-            el.getAttribute?.('data-test'),
-            el.textContent
-        ].filter(Boolean).join(' ').replace(/\s+/g, ' ').trim();
-    }
-
-    function getDisneyPlusSeekButtonLabels() {
-        if (!isDisneyPlusHost() || typeof document === 'undefined') return [];
-        return querySelectorAllShadow('button,[role="button"]')
-            .map(getElementLabel)
-            .filter(Boolean)
-            .slice(0, 20);
-    }
-
-    function clickDisneyPlusRelativeSeek(delta) {
-        if (!isDisneyPlusHost() || !Number.isFinite(delta) || Math.abs(delta) < 1 || typeof document === 'undefined') return false;
-        const backward = delta < 0;
-        const candidates = querySelectorAllShadow('button,[role="button"]');
-        const backRe = /rewind|backward|back\b|zurück|zurueck|rück|rueck|retour|recul|retroced|atrás|voltar|indietro/i;
-        const forwardRe = /forward|ahead|skip|vorwärts|vorwaerts|vorsp|weiter|avancer|adelant|avançar|avancar|avanti/i;
-        const timeRe = /\b(5|10|15|30)\b|sec|sek|second/i;
-
-        const button = candidates.find(btn => {
-            const label = getElementLabel(btn);
-            const matchesDirection = backward ? backRe.test(label) : forwardRe.test(label);
-            return matchesDirection && timeRe.test(label);
-        }) || candidates.find(btn => {
-            const label = getElementLabel(btn);
-            return backward ? backRe.test(label) : forwardRe.test(label);
-        });
-
-        if (button && typeof button.click === 'function') {
-            // Disney offers no absolute seek on its blob <video>, so we click its
-            // relative skip button. Derive the step from the button's own label
-            // (usually 10s; some UIs 5/15/30) and issue enough clicks to cover the
-            // full delta. The previous 120s cap truncated any larger seek, which
-            // broke absolute-position sync (e.g. seeking to 5:00 from far away).
-            const stepMatch = getElementLabel(button).match(/\b(5|10|15|30)\b/);
-            const step = stepMatch ? Number(stepMatch[1]) : 10;
-            const clicks = Math.max(1, Math.min(90, Math.round(Math.abs(delta) / step)));
-            for (let i = 0; i < clicks; i++) {
-                setTimeout(() => button.click(), i * 60);
-            }
-            return true;
-        }
-
-        // Fallback: Simulate ArrowLeft / ArrowRight keyboard events
-        const clicks = Math.max(1, Math.min(12, Math.round(Math.abs(delta) / 10)));
-        const eventInit = {
-            key: backward ? 'ArrowLeft' : 'ArrowRight',
-            code: backward ? 'ArrowLeft' : 'ArrowRight',
-            keyCode: backward ? 37 : 39,
-            which: backward ? 37 : 39,
-            bubbles: true,
-            cancelable: true,
-            view: window
-        };
-        const target = document.querySelector('.hive-video') || document.activeElement || document.body;
-        for (let i = 0; i < clicks; i++) {
-            setTimeout(() => {
-                target.dispatchEvent(new window.KeyboardEvent('keydown', eventInit));
-                target.dispatchEvent(new window.KeyboardEvent('keyup', eventInit));
-            }, i * 60);
-        }
-        return true;
-    }
-
-    function getDisneyPlusTimeline(video) {
+    function getDisneyPlusTimeline() {
         if (!isDisneyPlusHost()) return null;
-        // Preferred: exact playhead/duration from the page media player,
-        // relayed by the MAIN-world bridge. Authoritative while fresh.
+        // Exact playhead/duration from the page media player, relayed by the
+        // MAIN-world bridge. No Disney DOM scraping fallback.
         if (disneyPageApiTime && (Date.now() - disneyPageApiTime.at) < 2000 && disneyPageApiTime.duration > 0) {
-            lastKnownDisneyPlusDuration = disneyPageApiTime.duration;
             const cur = Math.max(0, Math.min(disneyPageApiTime.duration, disneyPageApiTime.position));
             return { start: 0, end: disneyPageApiTime.duration, duration: disneyPageApiTime.duration, current: cur, nativeScale: 1, nativeStart: 0 };
-        }
-        const range = getSeekableRange(video);
-        const current = video.currentTime;
-        const ui = getDisneyPlusUiTimeline();
-
-        if (ui) {
-            lastKnownDisneyPlusDuration = ui.duration;
-            let nativeScale = 1;
-            if (range && range.duration > ui.duration * 1.2) {
-                nativeScale = range.duration / ui.duration;
-            } else if (Number.isFinite(current) && ui.current > 1 && current > ui.current * 1.5) {
-                nativeScale = current / ui.current;
-            }
-            const nativeStart = Number.isFinite(current)
-                ? current - ui.current * nativeScale
-                : (range ? range.start : 0);
-            lastKnownDisneyPlusScale = nativeScale;
-            lastKnownDisneyPlusStart = nativeStart;
-            lastDisneyPlusUiCurrent = ui.current;
-            lastDisneyPlusNativeAtUi = Number.isFinite(current) ? current : null;
-            return {
-                ...(range || {}),
-                current: ui.current,
-                duration: ui.duration,
-                nativeScale,
-                nativeStart
-            };
-        }
-
-        // No live UI readout (control overlay hidden or mid-rebuild). Extrapolate
-        // from the last live UI position using the native clock, which advances 1:1
-        // with real playback. Disney recreates the <video> on some play/pause
-        // transitions, which resets currentTime; if the native clock jumped back or
-        // leapt implausibly, freeze at the last known position instead of a garbage time.
-        if (lastDisneyPlusUiCurrent !== null && lastKnownDisneyPlusDuration > 0) {
-            let estimated = lastDisneyPlusUiCurrent;
-            if (Number.isFinite(current) && lastDisneyPlusNativeAtUi !== null) {
-                const delta = current - lastDisneyPlusNativeAtUi;
-                if (delta >= 0 && delta < 60) {
-                    estimated = lastDisneyPlusUiCurrent + delta;
-                }
-            }
-            return {
-                start: 0,
-                end: lastKnownDisneyPlusDuration,
-                duration: lastKnownDisneyPlusDuration,
-                current: Math.max(0, Math.min(lastKnownDisneyPlusDuration, estimated)),
-                nativeScale: lastKnownDisneyPlusScale,
-                nativeStart: lastKnownDisneyPlusStart
-            };
-        }
-
-        if (!range || range.start < 1 || range.duration < 60) return null;
-        if (!Number.isFinite(current) || current < range.start - 1 || current > range.end + 1) return null;
-        return { ...range, current: Math.max(0, current - range.start), nativeScale: 1, nativeStart: range.start };
-    }
+        }
+        return null;
+    }
 
     // Site-specific player exceptions live here. The default HTML5 path stays below.
     function getSiteQuirkAdapters() {
         return [{
-            name: 'disneyplus-timeline-and-buttons',
-            key: 'disneyPlus',
-            urls: ['disneyplus.com'],
-            matches() { return matchesPlayerUrls(this.urls); },
-            getTimeline: getDisneyPlusTimeline,
-            clickRelativeSeek: clickDisneyPlusRelativeSeek,
-            getDebug(video) {
-                return {
-                    name: this.name,
-                    key: 'disneyPlus',
-                    urls: this.urls,
-                    timeline: getDisneyPlusTimeline(video),
-                    timelineCandidates: lastDisneyPlusTimelineCandidates,
-                    seekButtons: getDisneyPlusSeekButtonLabels()
-                };
-            }
-        }];
+            name: 'disneyplus-page-api',
+            key: 'disneyPlus',
+            urls: ['disneyplus.com'],
+            matches() { return matchesPlayerUrls(this.urls); },
+            getTimeline: getDisneyPlusTimeline,
+            getDebug(video) {
+                return {
+                    name: this.name,
+                    key: 'disneyPlus',
+                    urls: this.urls,
+                    timeline: getDisneyPlusTimeline(video)
+                };
+            }
+        }];
     }
 
     function getActiveSiteQuirk() {
@@ -419,7 +163,7 @@
             !!window.koalaFindPageApiSeekProvider(window.location.hostname);
     }
 
-    function seekVideo(video, targetTime, relativeDelta = null) {
+    function seekVideo(video, targetTime) {
         // Prefer a precise page-level seek API when available (Netflix, Disney+);
         // for those players the DOM/button seek path is imprecise or impossible.
         if (shouldUsePageApiSeek()) {
@@ -427,21 +171,9 @@
             window.postMessage({ __koalaPageApiSeek: PAGE_API_SEEK_BRIDGE, kind: 'seek', time: targetTime }, '*');
             return;
         }
-        const siteQuirk = getActiveSiteQuirk();
-        let delta = relativeDelta;
-        if (delta === null && siteQuirk) {
-            const current = getSyncCurrentTime(video);
-            if (current !== null) {
-                delta = targetTime - current;
-            }
-        }
-        if (siteQuirk && siteQuirk.clickRelativeSeek(delta)) {
-            expectedSeekTime = null;
-            return;
-        }
         expectedSeekTime = targetTime;
         video.currentTime = toNativeSeekTime(video, targetTime);
-    }
+    }
 

     // --- Play/Pause Coalescing (leading + trailing) ---

     // Media players (HLS/DASH, ad insertion, ABR/quality switches, source swaps,

@@ -1501,11 +1233,10 @@
                     metadata,

                     videoCount,

                     inShadowDom,

-                    platform,
-                    siteQuirk: getSiteQuirkDebug(video),
-                    scrapedTimestamps: getScrapedTimestamps(),
-                    allVideos
-                });
+                    platform,
+                    siteQuirk: getSiteQuirkDebug(video),
+                    allVideos
+                });
             } else {

                 sendResponse({

                     found: false,

@@ -1513,10 +1244,9 @@
                     inShadowDom,

                     platform,

                     allVideos,

-                    url: window.location.href,

-                    pageTitle: document.title,
-                    scrapedTimestamps: getScrapedTimestamps(),
-                    metadata: (navigator.mediaSession && navigator.mediaSession.metadata) ? {

+                    url: window.location.href,
+                    pageTitle: document.title,
+                    metadata: (navigator.mediaSession && navigator.mediaSession.metadata) ? {
                         title: navigator.mediaSession.metadata.title,

                         artist: navigator.mediaSession.metadata.artist,

                         album: navigator.mediaSession.metadata.album

@@ -1733,80 +1463,7 @@
         checkEpisodeTransition();

     };

 

-    function scanShadowDom(node, callback) {
-        if (!node) return;
-        callback(node);
-        const children = node.childNodes || [];
-        for (let i = 0; i < children.length; i++) {
-            scanShadowDom(children[i], callback);
-        }
-        if (node.shadowRoot) {
-            scanShadowDom(node.shadowRoot, callback);
-        }
-    }
-
-    function querySelectorAllShadow(selector) {
-        if (typeof document === 'undefined') return [];
-        if (!document.body && typeof document.querySelectorAll === 'function') {
-            try {
-                return Array.from(document.querySelectorAll(selector));
-            } catch (_e) {
-                return [];
-            }
-        }
-        const results = [];
-        scanShadowDom(document.body || document, (node) => {
-            if (node.nodeType === 1 && typeof node.matches === 'function' && node.matches(selector)) {
-                results.push(node);
-            }
-        });
-        return results;
-    }
-
-    function getScrapedTimestamps() {
-        if (typeof document === 'undefined') return [];
-        try {
-            const results = [];
-            const unique = new Set();
-
-            scanShadowDom(document.body, (node) => {
-                if (node.nodeType !== 1) return;
-                
-                const txt = (node.textContent || '').trim();
-                if (txt && txt.length < 50 && !unique.has(txt)) {
-                    const match = txt.match(/(\d{1,2}:)?\d{1,2}:\d{2}/);
-                    if (match) {
-                        unique.add(txt);
-                        const tag = node.tagName.toLowerCase();
-                        const cls = node.className ? `.${node.className.split(' ')[0]}` : '';
-                        results.push(`${tag}${cls}: "${txt}"`);
-                    }
-                }
-
-                const isSlider = node.getAttribute('role') === 'slider' || 
-                                 node.getAttribute('role') === 'progressbar' ||
-                                 node.hasAttribute('aria-valuenow') ||
-                                 node.tagName.toLowerCase() === 'progress' ||
-                                 (node.tagName.toLowerCase() === 'input' && node.type === 'range');
-                
-                if (isSlider) {
-                    const tag = node.tagName.toLowerCase();
-                    const cls = node.className ? `.${node.className.split(' ')[0]}` : '';
-                    const now = node.getAttribute('aria-valuenow') || node.value || '?';
-                    const max = node.getAttribute('aria-valuemax') || node.max || '?';
-                    const text = node.getAttribute('aria-valuetext') || '?';
-                    const width = node.style?.width || '?';
-                    results.push(`[SLIDER] ${tag}${cls}: now=${now}, max=${max}, text="${text}", width=${width}`);
-                }
-            });
-
-            return results.slice(0, 15);
-        } catch (_e) {
-            return [];
-        }
-    }
-
-    function setupListeners() {

+    function setupListeners() {
         const video = findVideo();

         if (video) {

             if (currentAudioVideo && currentAudioVideo !== video) {

diff --git a/extension/popup.html b/extension/popup.html
index 8a792e9..df2188c 100644
--- a/extension/popup.html
+++ b/extension/popup.html
@@ -700,12 +700,6 @@
             <button id="remoteSeekForward" class="secondary" style="flex:1; font-size:12px;">+30s</button>
         </div>
         <button id="remoteSeekFiveMin" class="secondary" style="width:100%; font-size:12px; margin-bottom:15px;">Seek 5:00</button>
-        <div style="margin-top: 15px;">
-            <label style="font-size:10px; font-weight:700; text-transform:uppercase; letter-spacing:0.5px;">DOM Timestamps (Scraped)</label>
-            <div class="info-card" id="devtoolsDomScraperList" style="font-size:10px; max-height:100px; overflow-y:auto; font-family:monospace; line-height:1.2; padding:6px; background:rgba(0,0,0,0.2); white-space:pre-wrap; border: 1px solid #334155;">
-                No timestamps scraped.
-            </div>
-        </div>
         <div style="font-size:10px; color:var(--text-muted); text-align:center; margin-top:10px; opacity:0.7;">
             Build: <span id="buildIdentifier">__BUILD_TIMESTAMP__</span>
         </div>
diff --git a/extension/popup.js b/extension/popup.js
index 0917a3e..ce66f71 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -2292,13 +2292,6 @@ function refreshDebugInfo() {
                     const buttons = Array.isArray(quirk.seekButtons) ? quirk.seekButtons.slice(0, 4).join(' | ') : '';
                     if (buttons) addField(`${label} Buttons`, buttons);
                 }
-                const domScraperEl = document.getElementById('devtoolsDomScraperList');
-                if (domScraperEl && state.scrapedTimestamps) {
-                    domScraperEl.textContent = state.scrapedTimestamps.length > 0
-                        ? state.scrapedTimestamps.join('\n')
-                        : 'No timestamps scraped.';
-                }
-
                 addSection('Properties');
                 addField('Seeking', String(state.seeking));
                 addField('Ended', String(state.ended));
diff --git a/scripts/test-content-video-finder.cjs b/scripts/test-content-video-finder.cjs
index 2d9ae7a..6c4a7db 100644
--- a/scripts/test-content-video-finder.cjs
+++ b/scripts/test-content-video-finder.cjs
@@ -77,38 +77,15 @@ function makeDocument(nodes = []) {
   };
 }
 
-function makeNode(attrs = {}, textContent = '') {
-  return {
-    textContent,
-    value: attrs.value,
-    max: attrs.max,
-    clicked: 0,
-    click() { this.clicked += 1; },
-    getAttribute(name) { return attrs[name] ?? null; }
-  };
-}
-
-function loadTimelineFns(hostname, document = makeDocument()) {
+function loadTimelineFns(hostname, document = makeDocument(), pageApiTime = null) {
+  const disneyPageApiTime = pageApiTime
+    ? `let disneyPageApiTime = { position: ${pageApiTime.position}, duration: ${pageApiTime.duration}, at: Date.now() - ${pageApiTime.ageMs || 0} };`
+    : 'let disneyPageApiTime = null;';
   return Function('window', 'document', [
-    'let lastDisneyPlusTimelineCandidates = [];',
-    'let lastKnownDisneyPlusDuration = 0;',
-    'let lastKnownDisneyPlusScale = 1;',
-    'let lastKnownDisneyPlusStart = 0;',
-    'let lastDisneyPlusUiCurrent = null;',
-    'let lastDisneyPlusNativeAtUi = null;',
-    'let disneyPageApiTime = null;',
-    extractFunction('scanShadowDom', source),
-    extractFunction('querySelectorAllShadow', source),
+    disneyPageApiTime,
     extractFunction('hostMatchesUrl', source),
     extractFunction('matchesPlayerUrls', source),
     extractFunction('isDisneyPlusHost', source),
-    extractFunction('getSeekableRange', source),
-    extractFunction('parseClockTime', source),
-    extractFunction('parseTimelineText', source),
-    extractFunction('getDisneyPlusUiTimeline', source),
-    extractFunction('getElementLabel', source),
-    extractFunction('getDisneyPlusSeekButtonLabels', source),
-    extractFunction('clickDisneyPlusRelativeSeek', source),
     extractFunction('getDisneyPlusTimeline', source),
     extractFunction('getSiteQuirkAdapters', source),
     extractFunction('getActiveSiteQuirk', source),
@@ -117,7 +94,7 @@ function loadTimelineFns(hostname, document = makeDocument()) {
     extractFunction('getSyncCurrentTime', source),
     extractFunction('getSyncDuration', source),
     extractFunction('toNativeSeekTime', source),
-    'return { getActiveSiteQuirk, getSyncCurrentTime, getSyncDuration, toNativeSeekTime, clickDisneyPlusRelativeSeek };'
+    'return { getActiveSiteQuirk, getSyncCurrentTime, getSyncDuration, toNativeSeekTime };'
   ].join('\n'))({ location: { hostname } }, document);
 }
 
@@ -131,11 +108,11 @@ function loadPlayerFixFns(hostname) {
   ].join('\n'))({ location: { hostname } });
 }
 
-const disneyUiDocument = makeDocument([
-  makeNode({ 'aria-valuetext': '0:09 / 180:00' })
-]);
-const disneyFns = loadTimelineFns('www.disneyplus.com', disneyUiDocument);
-assert.equal(disneyFns.getActiveSiteQuirk().name, 'disneyplus-timeline-and-buttons');
+const disneyFns = loadTimelineFns('www.disneyplus.com', makeDocument(), {
+  position: 9,
+  duration: 10800
+});
+assert.equal(disneyFns.getActiveSiteQuirk().name, 'disneyplus-page-api');
 assert.deepEqual(disneyFns.getActiveSiteQuirk().urls, ['disneyplus.com']);
 const disneyVideo = makeVideo('disney-offset', 1920, 1080, {
   currentTime: 29,
@@ -144,17 +121,17 @@ const disneyVideo = makeVideo('disney-offset', 1920, 1080, {
 });
 assert.equal(disneyFns.getSyncCurrentTime(disneyVideo), 9);
 assert.equal(disneyFns.getSyncDuration(disneyVideo), 10800);
-assert.equal(disneyFns.toNativeSeekTime(disneyVideo, 39), 119);
+assert.equal(disneyFns.toNativeSeekTime(disneyVideo, 39), 39);
 
-const disneySeekableFallbackFns = loadTimelineFns('www.disneyplus.com');
+const disneyNoPageApiFns = loadTimelineFns('www.disneyplus.com');
 const disneyOffsetVideo = makeVideo('disney-offset', 1920, 1080, {
   currentTime: 29,
   duration: 0,
   seekable: makeSeekable([[20, 10820]])
 });
-assert.equal(disneySeekableFallbackFns.getSyncCurrentTime(disneyOffsetVideo), 9);
-assert.equal(disneySeekableFallbackFns.getSyncDuration(disneyOffsetVideo), 10800);
-assert.equal(disneySeekableFallbackFns.toNativeSeekTime(disneyOffsetVideo, 39), 59);
+assert.equal(disneyNoPageApiFns.getSyncCurrentTime(disneyOffsetVideo), 29);
+assert.equal(disneyNoPageApiFns.getSyncDuration(disneyOffsetVideo), 0);
+assert.equal(disneyNoPageApiFns.toNativeSeekTime(disneyOffsetVideo, 39), 39);
 
 const genericFns = loadTimelineFns('example.com');
 assert.equal(genericFns.getActiveSiteQuirk(), null);
@@ -162,12 +139,6 @@ assert.equal(genericFns.getSyncCurrentTime(disneyVideo), 29);
 assert.equal(genericFns.getSyncDuration(disneyVideo), 0);
 assert.equal(genericFns.toNativeSeekTime(disneyVideo, 39), 39);
 
-const backButton = makeNode({ 'aria-label': '10 Sekunden zurück' });
-const forwardButton = makeNode({ 'aria-label': '10 Sekunden vorspulen' });
-const disneyButtonFns = loadTimelineFns('www.disneyplus.com', makeDocument([backButton, forwardButton]));
-assert.equal(disneyButtonFns.clickDisneyPlusRelativeSeek(-30), true);
-assert.equal(disneyButtonFns.clickDisneyPlusRelativeSeek(30), true);
-
 const twitchFixFns = loadPlayerFixFns('player.twitch.tv');
 assert.equal(twitchFixFns.getActivePlayerActionFix().name, 'twitch-player-buttons');
 assert.deepEqual(twitchFixFns.getActivePlayerActionFix().urls, ['twitch.tv']);

From 1b7be23b294064364563e63e197587dec7f47a84 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 15:33:47 +0200
Subject: [PATCH 115/151] Document v2.5.2 release

---
 docs/CHANGELOG.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 0e703d7..d2d2ff8 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -6,10 +6,25 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ## Unreleased
 
+---
+
+## [v2.5.2] — 2026-07-02
+
 ### Added
 - **Extension: Privacy title controls** - Advanced users can now disable sending browser tab titles separately from media titles. Media titles can still be sent in full, reduced to detected episode identifiers such as `S01E04`, or hidden entirely. Defaults remain full titles for backwards compatibility.
 - **Relay: Cleaner restart handling** — Connected clients are now disconnected explicitly during relay shutdown so reconnects recover more predictably.
 - **Relay: Stronger abuse protection** — Rapid room-leave spam is now rate-limited.
+- **Extension: Hidden remote seek diagnostics** — KoalaDev can use the hidden Dev tab to simulate remote seeks and inspect precise native/page-API timing while debugging playback integrations.
+
+### Changed
+- **Extension: Shared page-API seek bridge** — Netflix and Disney+ now use a common page-level seek bridge so private player APIs can be invoked from the page context while the default HTML5 path stays unchanged.
+- **Build: Release build timestamp** — Extension builds now inject a build timestamp into the hidden Dev tab for easier local package verification.
+
+### Fixed
+- **Extension: Disney+ precise sync** — Disney+ now reads time and seeks through the real page media-player API, and the temporary DOM timeline/button scraping fallback has been removed.
+- **Extension: Netflix seek reliability** — Netflix seeking keeps using the page player API with a safer session lookup path.
+- **Extension: Tab-title counter cleanup** — Leading browser notification counters such as `(14)` or `[7]` are removed from shared tab titles and matching logic without changing the existing privacy controls.
+- **Extension: Tab navigation reinjection** — Reinjecting the content script after selected-tab navigation now uses the same page-API-aware injection path.
 
 ---
 

From 6ccaf45f8e0f060dffc1fcda5fa88805308b4d2b Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Thu, 2 Jul 2026 13:34:11 +0000
Subject: [PATCH 116/151] chore(release): update versions to v2.5.2 [skip ci]

---
 README.md                    |   4 +-
 extension/manifest.base.json |   2 +-
 package.json                 |   2 +-
 shared/constants.js          |   2 +-
 website/sitemap.xml          | 124 +++++++++++++++++------------------
 website/template.html        |   2 +-
 website/version.json         |   4 +-
 7 files changed, 70 insertions(+), 70 deletions(-)

diff --git a/README.md b/README.md
index d61c0fe..069b6a8 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml"><img src="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg" alt="Release Status"></a>
-  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.5.1-blue?logo=github" alt="GitHub release"></a>
+  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.5.2-blue?logo=github" alt="GitHub release"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue" alt="License"></a>
   <a href="https://addons.mozilla.org/de/firefox/addon/koalasync/"><img src="https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser&logoColor=white" alt="Firefox Add-on"></a>
   <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white" alt="Chrome Extension"></a>
@@ -14,7 +14,7 @@
 
 <p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
 
-<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.5.1 Release!</b> — See what's changed</a></p>
+<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.5.2 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
diff --git a/extension/manifest.base.json b/extension/manifest.base.json
index 4cd1595..ef29892 100644
--- a/extension/manifest.base.json
+++ b/extension/manifest.base.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "en",
   "name": "KoalaSync",
-  "version": "2.5.1",
+  "version": "2.5.2",
   "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
diff --git a/package.json b/package.json
index e8b10a7..4aa45e8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "2.5.1",
+  "version": "2.5.2",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "type": "module",
diff --git a/shared/constants.js b/shared/constants.js
index 72e1bd7..0479c77 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -7,7 +7,7 @@
  */
 
 export const PROTOCOL_VERSION = "1.0.0";
-export const APP_VERSION = "2.5.1";
+export const APP_VERSION = "2.5.2";
 
 export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
diff --git a/website/sitemap.xml b/website/sitemap.xml
index 2bf57d6..148c654 100644
--- a/website/sitemap.xml
+++ b/website/sitemap.xml
@@ -3,31 +3,31 @@
         xmlns:xhtml="http://www.w3.org/1999/xhtml">
   <url>
     <loc>https://sync.koalastuff.net/imprint</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/privacy</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/impressum</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/datenschutz</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -49,7 +49,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -71,7 +71,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -93,7 +93,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -115,7 +115,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -137,7 +137,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -159,7 +159,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -181,7 +181,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -203,7 +203,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -225,7 +225,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -247,7 +247,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -269,7 +269,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -291,7 +291,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -313,7 +313,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -335,7 +335,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -357,7 +357,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -379,7 +379,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -401,7 +401,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -423,7 +423,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -445,7 +445,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -467,7 +467,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -489,7 +489,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -511,7 +511,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -533,7 +533,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -555,7 +555,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -577,7 +577,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -599,7 +599,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -621,7 +621,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -643,7 +643,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -665,7 +665,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -687,7 +687,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -709,7 +709,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -731,7 +731,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -753,7 +753,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -775,7 +775,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -797,7 +797,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -819,7 +819,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -841,7 +841,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -863,7 +863,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -885,7 +885,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/zh/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -907,7 +907,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/zh/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -929,7 +929,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/zh/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -951,7 +951,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/uk/alternatives</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives"/>
@@ -973,7 +973,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/uk/alternatives/teleparty</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/teleparty"/>
@@ -995,7 +995,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/uk/alternatives/screen-sharing</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.7</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/alternatives/screen-sharing"/>
@@ -1017,7 +1017,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>1.0</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1037,7 +1037,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1057,7 +1057,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/fr/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1077,7 +1077,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/es/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1097,7 +1097,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt-BR/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1117,7 +1117,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ru/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1137,7 +1137,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/it/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1157,7 +1157,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pl/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1177,7 +1177,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/tr/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1197,7 +1197,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/nl/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1217,7 +1217,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ja/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1237,7 +1237,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/ko/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
@@ -1257,7 +1257,7 @@
   </url>
   <url>
     <loc>https://sync.koalastuff.net/pt/</loc>
-    <lastmod>2026-07-01</lastmod>
+    <lastmod>2026-07-02</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
     <xhtml:link rel="alternate" hreflang="en" href="https://sync.koalastuff.net/"/>
diff --git a/website/template.html b/website/template.html
index b27be97..34d4358 100644
--- a/website/template.html
+++ b/website/template.html
@@ -106,7 +106,7 @@
         "priceCurrency": "EUR"
       },
       "description": "{{SCHEMA_APP_DESC}}",
-      "softwareVersion": "2.5.1",
+      "softwareVersion": "2.5.2",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",
       "image": "https://sync.koalastuff.net/assets/NewLogoIcon.webp",
diff --git a/website/version.json b/website/version.json
index d9e4f19..6e9b0d3 100644
--- a/website/version.json
+++ b/website/version.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.5.1",
-  "date": "2026-07-01T17:48:39Z"
+  "version": "2.5.2",
+  "date": "2026-07-02T13:34:11Z"
 }

From 869c64171b309fe5f09c7b51a8dc3e49b8bb1179 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 16:57:48 +0200
Subject: [PATCH 117/151] Fix Disney+ force sync, seek, and HCM regressions for
 v2.5.3

The v2.5.2 Disney+ page-API integration leaked blob-relative <video>
time into force sync, seeks, and heartbeats when the page-API bridge
had no fresh data, so force sync on Disney+ appeared broken.

- getSyncCurrentTime/getSyncDuration now refuse native values on Disney+
  (return null/0) so stale bridge data degrades to a clean no-op instead
  of broadcasting garbage to peers. The get_current_time handler and
  episode/lobby/hcmIsLive paths are routed through the same accessor.
- Validate FORCE_SYNC_PREPARE/SEEK payloads as finite before relaying;
  the internal coercion no longer treats '' as 0.
- Stop double-routing FORCE_SYNC_PREPARE from the popup path (the
  generic popup route now covers only play/pause/seek).
- popup force-sync: exclude null/empty peer times from the jump-to-others
  median (Number(null)===0 was dragging the target to 0), guard against
  NaN end-to-end, clear the dangling reset timer on failure, and retry
  without re-injecting when the content script responds but the Disney+
  bridge has not yet delivered a finite time.
- hcmIsLive skips the native-duration live signal on Disney+ only,
  preserving YouTube/Twitch Infinity-duration live detection.

Disney-specific logic remains strictly gated to disneyplus.com; no
Netflix/YouTube/Twitch/generic path is affected.
---
 docs/CHANGELOG.md                     | 13 +++++
 extension/background.js               | 35 +++++++++++++-
 extension/content.js                  | 68 +++++++++++++++------------
 extension/popup.js                    | 55 +++++++++++++++-------
 scripts/test-content-video-finder.cjs |  6 ++-
 5 files changed, 126 insertions(+), 51 deletions(-)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index d2d2ff8..9c6bd73 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -8,6 +8,19 @@ All notable changes to the KoalaSync browser extension and relay server.
 
 ---
 
+## [v2.5.3] — 2026-07-02
+
+### Fixed
+- **Extension: Disney+ force sync and seek reliability** — The v2.5.2 Disney+ page-API integration leaked blob-relative `<video>` time into force sync, seeks, and heartbeats when the page-API bridge had no fresh data, which presented as "force sync does nothing on Disney+". Time/duration accessors now refuse to return native values on Disney+ (returning null/0) so stale bridge data degrades to a clean no-op instead of broadcasting garbage. `FORCE_SYNC_PREPARE` and `SEEK` payloads are now validated as finite before being relayed, and the popup's force-sync flow fails cleanly with a clear error rather than sending NaN through.
+- **Extension: Force-sync no longer routed twice** — A popup-initiated `FORCE_SYNC_PREPARE` was being delivered to the content script twice (once by the generic popup route and once by the force-sync-specific route), causing a double seek. The generic route is now scoped to play/pause/seek only.
+- **Extension: Disney+ Host Control Mode classification** — `hcmIsLive` previously read the native `<video>` duration to detect live streams, which on Disney+ is blob-relative garbage and falsely classified every stream as live (disabling snap-back and the desync dialog). The native-duration live signal is now skipped on Disney+ while YouTube/Twitch live detection via `Infinity` duration is preserved.
+- **Extension: Disney+ episode auto-sync and lobby readiness** — Episode-transition detection and the episode-lobby "ready" poll now read the playhead through the gated time accessor, so they no longer rely on blob-relative `currentTime` on Disney+.
+- **Extension: Force-sync median no longer skewed by peers without a known time** — A peer broadcasting `currentTime: null` (e.g. a Disney+ peer whose page-API bridge was not yet ready, or a freshly joined peer) was coerced to `0` by the jump-to-others median calculation, dragging the sync target toward the start of the video. Null and empty peer times are now excluded before the median.
+- **Extension: Force-sync `jump-to-me` retry on Disney+** — When the content script responds but the page-API bridge has not yet delivered a finite time (typical during the first ~250 ms after a Disney+ player loads), the popup now retries once without redundantly re-injecting the content script.
+- **Extension: Empty-string seek payload rejection** — The internal seek-time coercion no longer treats `''` as `0`; an empty-string `targetTime`/`currentTime` is rejected as invalid.
+
+---
+
 ## [v2.5.2] — 2026-07-02
 
 ### Added
diff --git a/extension/background.js b/extension/background.js
index 96972a2..c2f595d 100644
--- a/extension/background.js
+++ b/extension/background.js
@@ -2227,12 +2227,40 @@ async function handleAsyncMessage(message, sender, sendResponse) {
                 return;
             }
 
+            const payload = message.payload && typeof message.payload === 'object' ? message.payload : {};
+            const payloadNumber = (value) => value !== undefined && value !== null && value !== '' ? Number(value) : NaN;
+            if (message.action === EVENTS.FORCE_SYNC_PREPARE) {
+                const targetTime = payloadNumber(payload.targetTime);
+                if (!Number.isFinite(targetTime)) {
+                    sendResponse({ status: 'invalid_params' });
+                    return;
+                }
+                payload.targetTime = targetTime;
+            } else if (message.action === EVENTS.SEEK) {
+                const targetTime = payloadNumber(payload.targetTime !== undefined ? payload.targetTime : payload.currentTime);
+                if (!Number.isFinite(targetTime)) {
+                    sendResponse({ status: 'invalid_params' });
+                    return;
+                }
+                payload.currentTime = targetTime;
+                payload.targetTime = targetTime;
+            }
+
             const timestamp = Date.now();
             localSeq++;
             chrome.storage.session.set({ localSeq });
             updateLastAction(message.action, 'You', timestamp);
             
-            const payload = message.payload || {};
+            const hasPlaybackTime = Number.isFinite(payload.currentTime) || Number.isFinite(payload.targetTime);
+            if (!sender?.tab && (message.action === EVENTS.PLAY || message.action === EVENTS.PAUSE) && !hasPlaybackTime) {
+                const tabId = currentTabId ? parseInt(currentTabId) : NaN;
+                if (!isNaN(tabId)) {
+                    const state = await getReadyTabVideoState(tabId);
+                    if (state && !state.error && state.found && Number.isFinite(state.currentTime)) {
+                        payload.currentTime = state.currentTime;
+                    }
+                }
+            }
             lastActionState.targetTime = payload.targetTime !== undefined ? payload.targetTime : payload.currentTime;
             if (storageInitialized) chrome.storage.session.set({ lastActionState });
             
@@ -2246,6 +2274,10 @@ async function handleAsyncMessage(message, sender, sendResponse) {
                 currentTime: payload.currentTime !== undefined ? payload.currentTime : (payload.targetTime !== undefined ? payload.targetTime : undefined)
             });
 
+            if (!sender?.tab && (message.action === EVENTS.PLAY || message.action === EVENTS.PAUSE || message.action === EVENTS.SEEK)) {
+                routeToContent(message.action, message.payload);
+            }
+
             if (message.action === EVENTS.FORCE_SYNC_PREPARE) {
                 isForceSyncInitiator = true;
                 forceSyncAcks.clear();
@@ -2299,7 +2331,6 @@ async function handleAsyncMessage(message, sender, sendResponse) {
                 sendResponse({ status: 'error' });
             });
         } else {
-            routeToContent(message.action, message.payload);
             processEvent().catch(err => {
                 addLog('Content event privacy error: ' + err.message, 'error');
                 sendResponse({ status: 'error' });
diff --git a/extension/content.js b/extension/content.js
index adc3e52..b9e7eab 100644
--- a/extension/content.js
+++ b/extension/content.js
@@ -134,18 +134,20 @@
         return adapter ? adapter.getDebug(video) : null;
     }
 
-    function getSyncCurrentTime(video) {
-        const current = video.currentTime;
-        if (!Number.isFinite(current)) return null;
-        const siteTimeline = getSiteQuirkTimeline(video);
-        return siteTimeline ? siteTimeline.current : current;
-    }
-
-    function getSyncDuration(video) {
-        const siteTimeline = getSiteQuirkTimeline(video);
-        if (siteTimeline) return siteTimeline.duration;
-        return Number.isFinite(video.duration) && video.duration > 0 ? video.duration : 0;
-    }
+    function getSyncCurrentTime(video) {
+        const siteTimeline = getSiteQuirkTimeline(video);
+        if (siteTimeline) return siteTimeline.current;
+        if (isDisneyPlusHost()) return null;
+        const current = video.currentTime;
+        return Number.isFinite(current) ? current : null;
+    }
+
+    function getSyncDuration(video) {
+        const siteTimeline = getSiteQuirkTimeline(video);
+        if (siteTimeline) return siteTimeline.duration;
+        if (isDisneyPlusHost()) return 0;
+        return Number.isFinite(video.duration) && video.duration > 0 ? video.duration : 0;
+    }
 
     function toNativeSeekTime(video, targetTime) {
         if (!Number.isFinite(targetTime)) return targetTime;
@@ -283,7 +285,7 @@
         // otherwise pre-loaded videos report NaN and get misclassified as live,

         // which suppresses the desync dialog (L-2).

         if (video.readyState < 1) return false;

-        if (!Number.isFinite(video.duration)) return true;

+        if (!isDisneyPlusHost() && !Number.isFinite(video.duration)) return true;

         try {

             const s = video.seekable;

             if (s && s.length > 0 && s.start(0) > 1) return true; // sliding DVR window

@@ -746,17 +748,19 @@
         if (!idA || !idB) return false; // At least one unparseable → allow

         return idA !== idB;             // Both parseable → only block if different

     }

-

-    function checkEpisodeTransition() {

-        const currentTitle = getMediaTitle();

-        const video = findVideo();

-

+    function checkEpisodeTransition() {
+
+        const currentTitle = getMediaTitle();
+
+        const video = findVideo();
+
+        const current = video ? getSyncCurrentTime(video) : null;
         // Only trigger if: we had a previous title, the title changed,

         // a video exists, and we're near the start of new content.

         if (lastKnownMediaTitle && currentTitle

             && !sameEpisode(currentTitle, lastKnownMediaTitle)

             && video

-            && video.currentTime < 5

+            && current !== null && current < 5

             && video.readyState >= 1) {

             onEpisodeTransition(currentTitle);

         }

@@ -786,13 +790,15 @@
             payload: { newTitle }

         }).catch(() => {});

     }

-

-    function checkAndReportLobbyReady(expectedTitle) {

-        const video = findVideo();

-        const currentTitle = getMediaTitle();

-

+    function checkAndReportLobbyReady(expectedTitle) {
+
+        const video = findVideo();
+
+        const currentTitle = getMediaTitle();
+
+        const current = video ? getSyncCurrentTime(video) : null;
         if (video && currentTitle && sameEpisode(currentTitle, expectedTitle)

-            && video.currentTime < 5 && video.readyState >= 1) {

+            && current !== null && current < 5 && video.readyState >= 1) {

             // Match! Pause at start and report ready.

             if (!video.paused) {

                 _setSuppress('paused');

@@ -941,12 +947,12 @@
 

     // Listen for commands from background.js

     chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {

-        if (!message) return;

-        if (message.action === 'get_current_time') {

-            const video = findVideo();

-            sendResponse({ currentTime: video ? video.currentTime : null });

-            return true;

-        }

+        if (!message) return;
+        if (message.action === 'get_current_time') {
+            const video = findVideo();
+            sendResponse({ currentTime: video ? getSyncCurrentTime(video) : null });
+            return true;
+        }
 

         if (message.action === 'APPLY_AUDIO_SETTINGS') {

             _audioProcessingAllowed = true;

diff --git a/extension/popup.js b/extension/popup.js
index ce66f71..d0f1462 100644
--- a/extension/popup.js
+++ b/extension/popup.js
@@ -1588,8 +1588,9 @@ elements.forceSyncBtn.addEventListener('click', async () => {
         }
         const peers = status.peers || [];
         const otherTimes = peers
-            .filter(p => typeof p === 'object' && p.peerId !== localPeerId && p.currentTime != null && !isNaN(p.currentTime))
-            .map(p => p.currentTime);
+            .filter(p => typeof p === 'object' && p.peerId !== localPeerId && p.currentTime != null && p.currentTime !== '')
+            .map(p => Number(p.currentTime))
+            .filter(Number.isFinite);
 
         if (otherTimes.length === 0) {
             showError(getMessage('ERR_NO_PEERS_TIME'));
@@ -1618,37 +1619,57 @@ elements.forceSyncBtn.addEventListener('click', async () => {
     forceSyncResetTimer = setTimeout(forceSyncReset, syncTimeoutMs);
     const tabId = parseInt(status.targetTabId);
 
+    const failForceSyncTime = () => {
+        if (forceSyncResetTimer) { clearTimeout(forceSyncResetTimer); forceSyncResetTimer = null; }
+        showError(getMessage('ERR_NO_VIDEO_TAB'));
+        forceSyncDone = true;
+        elements.forceSyncBtn.disabled = false;
+        elements.forceSyncBtn.textContent = originalText;
+    };
+
     const sendForceSync = (time) => {
+        if (time === null || time === undefined) {
+            failForceSyncTime();
+            return;
+        }
+        const target = Number(time);
+        if (!Number.isFinite(target)) {
+            failForceSyncTime();
+            return;
+        }
         chrome.runtime.sendMessage({
             type: 'CONTENT_EVENT',
             action: EVENTS.FORCE_SYNC_PREPARE,
-            payload: { targetTime: parseFloat(time) }
+            payload: { targetTime: target }
         });
     };
 
     if (mode === 'jump-to-me') {
+        const retryQueryTime = () => {
+            chrome.tabs.sendMessage(tabId, { action: 'get_current_time' }, (retryResponse) => {
+                if (chrome.runtime.lastError || !retryResponse || !Number.isFinite(retryResponse.currentTime)) {
+                    failForceSyncTime();
+                    return;
+                }
+                sendForceSync(retryResponse.currentTime);
+            });
+        };
         chrome.tabs.sendMessage(tabId, { action: 'get_current_time' }, (response) => {
-            if (chrome.runtime.lastError || !response || response.currentTime === undefined) {
+            if (Number.isFinite(response?.currentTime)) {
+                sendForceSync(response.currentTime);
+                return;
+            }
+            if (chrome.runtime.lastError || !response) {
                 chrome.runtime.sendMessage({ type: 'INJECT_CONTENT_SCRIPT', tabId }, (injectResponse) => {
                     if (chrome.runtime.lastError || !injectResponse || injectResponse.status !== 'ok') {
-                        showError(getMessage('ERR_NO_VIDEO_TAB'));
-                        forceSyncDone = true;
-                        elements.forceSyncBtn.disabled = false;
-                        elements.forceSyncBtn.textContent = originalText;
+                        failForceSyncTime();
                         return;
                     }
-                    setTimeout(() => {
-                        chrome.tabs.sendMessage(tabId, { action: 'get_current_time' }, (retryResponse) => {
-                            if (chrome.runtime.lastError) return;
-                            if (retryResponse && retryResponse.currentTime !== undefined) {
-                                sendForceSync(retryResponse.currentTime);
-                            }
-                        });
-                    }, 500);
+                    setTimeout(retryQueryTime, 500);
                 });
                 return;
             }
-            sendForceSync(response.currentTime);
+            setTimeout(retryQueryTime, 500);
         });
     } else {
         sendForceSync(targetTime);
diff --git a/scripts/test-content-video-finder.cjs b/scripts/test-content-video-finder.cjs
index 6c4a7db..70bff9a 100644
--- a/scripts/test-content-video-finder.cjs
+++ b/scripts/test-content-video-finder.cjs
@@ -122,6 +122,10 @@ const disneyVideo = makeVideo('disney-offset', 1920, 1080, {
 assert.equal(disneyFns.getSyncCurrentTime(disneyVideo), 9);
 assert.equal(disneyFns.getSyncDuration(disneyVideo), 10800);
 assert.equal(disneyFns.toNativeSeekTime(disneyVideo, 39), 39);
+assert.equal(disneyFns.getSyncCurrentTime(makeVideo('disney-native-broken', 1920, 1080, {
+  currentTime: Number.NaN,
+  duration: 0
+})), 9);
 
 const disneyNoPageApiFns = loadTimelineFns('www.disneyplus.com');
 const disneyOffsetVideo = makeVideo('disney-offset', 1920, 1080, {
@@ -129,7 +133,7 @@ const disneyOffsetVideo = makeVideo('disney-offset', 1920, 1080, {
   duration: 0,
   seekable: makeSeekable([[20, 10820]])
 });
-assert.equal(disneyNoPageApiFns.getSyncCurrentTime(disneyOffsetVideo), 29);
+assert.equal(disneyNoPageApiFns.getSyncCurrentTime(disneyOffsetVideo), null);
 assert.equal(disneyNoPageApiFns.getSyncDuration(disneyOffsetVideo), 0);
 assert.equal(disneyNoPageApiFns.toNativeSeekTime(disneyOffsetVideo, 39), 39);
 

From 72ea5d1ee9eb0f7e8ab61056b59a36380eb0f943 Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Thu, 2 Jul 2026 14:59:12 +0000
Subject: [PATCH 118/151] chore(release): update versions to v2.5.3 [skip ci]

---
 README.md                    | 4 ++--
 extension/manifest.base.json | 2 +-
 package.json                 | 2 +-
 shared/constants.js          | 2 +-
 website/template.html        | 2 +-
 website/version.json         | 4 ++--
 6 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index 069b6a8..2bc692f 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml"><img src="https://github.com/Shik3i/KoalaSync/actions/workflows/release.yml/badge.svg" alt="Release Status"></a>
-  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.5.2-blue?logo=github" alt="GitHub release"></a>
+  <a href="https://github.com/Shik3i/KoalaSync/releases"><img src="https://img.shields.io/badge/Release-v2.5.3-blue?logo=github" alt="GitHub release"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue" alt="License"></a>
   <a href="https://addons.mozilla.org/de/firefox/addon/koalasync/"><img src="https://img.shields.io/badge/Firefox-Download-orange?logo=firefoxbrowser&logoColor=white" alt="Firefox Add-on"></a>
   <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white" alt="Chrome Extension"></a>
@@ -14,7 +14,7 @@
 
 <p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback on almost any website with a video element—YouTube, Twitch, Netflix, Emby, Jellyfin, and beyond. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
 
-<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.5.2 Release!</b> — See what's changed</a></p>
+<p align="center"><a href="docs/CHANGELOG.md"><b>New v2.5.3 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
diff --git a/extension/manifest.base.json b/extension/manifest.base.json
index ef29892..28c0b1d 100644
--- a/extension/manifest.base.json
+++ b/extension/manifest.base.json
@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "default_locale": "en",
   "name": "KoalaSync",
-  "version": "2.5.2",
+  "version": "2.5.3",
   "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
diff --git a/package.json b/package.json
index 4aa45e8..a3c3638 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "2.5.2",
+  "version": "2.5.3",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "type": "module",
diff --git a/shared/constants.js b/shared/constants.js
index 0479c77..1638d22 100644
--- a/shared/constants.js
+++ b/shared/constants.js
@@ -7,7 +7,7 @@
  */
 
 export const PROTOCOL_VERSION = "1.0.0";
-export const APP_VERSION = "2.5.2";
+export const APP_VERSION = "2.5.3";
 
 export const OFFICIAL_SERVER_URL = 'wss://syncserver.koalastuff.net';
 export const OFFICIAL_LANDING_PAGE_URL = 'https://sync.koalastuff.net';
diff --git a/website/template.html b/website/template.html
index 34d4358..4eda357 100644
--- a/website/template.html
+++ b/website/template.html
@@ -106,7 +106,7 @@
         "priceCurrency": "EUR"
       },
       "description": "{{SCHEMA_APP_DESC}}",
-      "softwareVersion": "2.5.2",
+      "softwareVersion": "2.5.3",
       "license": "https://opensource.org/licenses/MIT",
       "sameAs": "https://github.com/Shik3i/KoalaSync",
       "image": "https://sync.koalastuff.net/assets/NewLogoIcon.webp",
diff --git a/website/version.json b/website/version.json
index 6e9b0d3..ab11dac 100644
--- a/website/version.json
+++ b/website/version.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.5.2",
-  "date": "2026-07-02T13:34:11Z"
+  "version": "2.5.3",
+  "date": "2026-07-02T14:59:12Z"
 }

From 3392f0b3a71551061c5a485120c1821ad304df35 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 17:16:15 +0200
Subject: [PATCH 119/151] docs: tighten v2.5.3 changelog wording

---
 docs/CHANGELOG.md | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 9c6bd73..06bf839 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -11,13 +11,10 @@ All notable changes to the KoalaSync browser extension and relay server.
 ## [v2.5.3] — 2026-07-02
 
 ### Fixed
-- **Extension: Disney+ force sync and seek reliability** — The v2.5.2 Disney+ page-API integration leaked blob-relative `<video>` time into force sync, seeks, and heartbeats when the page-API bridge had no fresh data, which presented as "force sync does nothing on Disney+". Time/duration accessors now refuse to return native values on Disney+ (returning null/0) so stale bridge data degrades to a clean no-op instead of broadcasting garbage. `FORCE_SYNC_PREPARE` and `SEEK` payloads are now validated as finite before being relayed, and the popup's force-sync flow fails cleanly with a clear error rather than sending NaN through.
-- **Extension: Force-sync no longer routed twice** — A popup-initiated `FORCE_SYNC_PREPARE` was being delivered to the content script twice (once by the generic popup route and once by the force-sync-specific route), causing a double seek. The generic route is now scoped to play/pause/seek only.
-- **Extension: Disney+ Host Control Mode classification** — `hcmIsLive` previously read the native `<video>` duration to detect live streams, which on Disney+ is blob-relative garbage and falsely classified every stream as live (disabling snap-back and the desync dialog). The native-duration live signal is now skipped on Disney+ while YouTube/Twitch live detection via `Infinity` duration is preserved.
-- **Extension: Disney+ episode auto-sync and lobby readiness** — Episode-transition detection and the episode-lobby "ready" poll now read the playhead through the gated time accessor, so they no longer rely on blob-relative `currentTime` on Disney+.
-- **Extension: Force-sync median no longer skewed by peers without a known time** — A peer broadcasting `currentTime: null` (e.g. a Disney+ peer whose page-API bridge was not yet ready, or a freshly joined peer) was coerced to `0` by the jump-to-others median calculation, dragging the sync target toward the start of the video. Null and empty peer times are now excluded before the median.
-- **Extension: Force-sync `jump-to-me` retry on Disney+** — When the content script responds but the page-API bridge has not yet delivered a finite time (typical during the first ~250 ms after a Disney+ player loads), the popup now retries once without redundantly re-injecting the content script.
-- **Extension: Empty-string seek payload rejection** — The internal seek-time coercion no longer treats `''` as `0`; an empty-string `targetTime`/`currentTime` is rejected as invalid.
+- **Extension: Disney+ force sync and seeking** — Fixed force sync on Disney+ failing or jumping to wrong positions. The extension now relies solely on accurate player-API time and fails cleanly when it isn't available yet, instead of falling back to unreliable raw video data.
+- **Extension: Force-sync accuracy** — When syncing to the group, peers whose current position isn't known yet (e.g. a Disney+ peer that just loaded) no longer pull the sync target toward the start of the video.
+- **Extension: Disney+ Host Control Mode** — Regular Disney+ content is no longer misclassified as a live stream, which had silently disabled the desync dialog and snap-back for guests in host-controlled rooms. YouTube and Twitch live detection is unchanged.
+- **Extension: Disney+ episode auto-sync** — Episode transitions and the "waiting for peers" lobby flow now work reliably on Disney+ again.
 
 ---
 

From 223c3949d27ab58a2aad26fdab5c729d8d31b74c Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 17:38:15 +0200
Subject: [PATCH 120/151] feat(website): auto-copy google and indexnow
 verification files during build

---
 website/4650678bb36b488d8f64343a67f1b931.txt |  1 +
 website/build.cjs                            | 19 ++++++++++++++++++-
 website/google157cb8453d13ccdc.html          |  1 +
 3 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 website/4650678bb36b488d8f64343a67f1b931.txt
 create mode 100644 website/google157cb8453d13ccdc.html

diff --git a/website/4650678bb36b488d8f64343a67f1b931.txt b/website/4650678bb36b488d8f64343a67f1b931.txt
new file mode 100644
index 0000000..9ee4c37
--- /dev/null
+++ b/website/4650678bb36b488d8f64343a67f1b931.txt
@@ -0,0 +1 @@
+4650678bb36b488d8f64343a67f1b931
\ No newline at end of file
diff --git a/website/build.cjs b/website/build.cjs
index 902e9a9..7a72ac2 100644
--- a/website/build.cjs
+++ b/website/build.cjs
@@ -314,7 +314,7 @@ async function compile() {
         }
     }
 
-    // ── 5. Copy generic static files ──
+    // ── 5. Copy generic static files and verification files ──
     const genericFiles = ['robots.txt', 'sitemap.xml', 'site.webmanifest', 'version.json'];
     for (const file of genericFiles) {
         const src = path.join(websiteDir, file);
@@ -322,6 +322,23 @@ async function compile() {
         if (fs.existsSync(src)) { fs.copyFileSync(src, dest); }
     }
 
+    // Auto-copy Google verification files and IndexNow/txt key files from website source to www root
+    const websiteFiles = fs.readdirSync(websiteDir);
+    for (const file of websiteFiles) {
+        const filePath = path.join(websiteDir, file);
+        if (fs.statSync(filePath).isFile()) {
+            // Match google[hex/alphanumeric].html or any hex/uuid txt file (e.g. 4650678bb36b488d8f64343a67f1b931.txt)
+            const isGoogleVerification = /^google[a-zA-Z0-9_-]+\.html$/i.test(file);
+            const isIndexNowVerification = (/^[a-zA-Z0-9_-]{8,}\.txt$/i.test(file) || /^[a-f0-9-]{32,36}$/i.test(file)) && file !== 'robots.txt';
+            
+            if (isGoogleVerification || isIndexNowVerification) {
+                const dest = path.join(wwwDir, file);
+                fs.copyFileSync(filePath, dest);
+                console.log(`  Copied verification file: ${file} → ${file}`);
+            }
+        }
+    }
+
     // ── 6. Copy assets ──
     console.log('Copying assets...');
     const srcAssets = path.join(websiteDir, 'assets');
diff --git a/website/google157cb8453d13ccdc.html b/website/google157cb8453d13ccdc.html
new file mode 100644
index 0000000..f24f20c
--- /dev/null
+++ b/website/google157cb8453d13ccdc.html
@@ -0,0 +1 @@
+google-site-verification: google157cb8453d13ccdc.html
\ No newline at end of file

From 25ad3e8d593f5b0e72ef04635cfe328e359a9e5a Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 17:39:17 +0200
Subject: [PATCH 121/151] feat(website): add cross-platform indexnow submission
 script

---
 package.json                |   1 +
 website/submit-indexnow.cjs | 105 ++++++++++++++++++++++++++++++++++++
 2 files changed, 106 insertions(+)
 create mode 100644 website/submit-indexnow.cjs

diff --git a/package.json b/package.json
index a3c3638..2ba94e8 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
   "type": "module",
   "scripts": {
     "build:extension": "node scripts/build-extension.cjs",
+    "indexnow": "node website/submit-indexnow.cjs",
     "lint": "eslint .",
     "lint:fix": "eslint . --fix",
     "test": "npm run verify",
diff --git a/website/submit-indexnow.cjs b/website/submit-indexnow.cjs
new file mode 100644
index 0000000..c293c94
--- /dev/null
+++ b/website/submit-indexnow.cjs
@@ -0,0 +1,105 @@
+const fs = require('fs');
+const path = require('path');
+const https = require('https');
+
+const websiteDir = __dirname;
+const sitemapPath = path.join(websiteDir, 'sitemap.xml');
+
+// 1. Find the IndexNow key file in the website directory
+const files = fs.readdirSync(websiteDir);
+let keyFile = null;
+
+for (const file of files) {
+    const isIndexNowFile = (/^[a-zA-Z0-9_-]{8,}\.txt$/i.test(file) || /^[a-f0-9-]{32,36}$/i.test(file)) && file !== 'robots.txt';
+    if (isIndexNowFile) {
+        keyFile = file;
+        break;
+    }
+}
+
+if (!keyFile) {
+    console.error('Error: Could not find any IndexNow key file in the website/ directory (e.g. <key>.txt or UUID file).');
+    process.exit(1);
+}
+
+const keyFilePath = path.join(websiteDir, keyFile);
+const keyContent = fs.readFileSync(keyFilePath, 'utf8').trim();
+
+// The key is either the file contents or the filename itself (excluding .txt)
+const key = keyContent || keyFile.replace(/\.txt$/i, '');
+const keyLocation = `https://sync.koalastuff.net/${keyFile}`;
+
+console.log(`Found IndexNow Key: ${key}`);
+console.log(`Key Location: ${keyLocation}`);
+
+// 2. Parse URLs from sitemap.xml
+if (!fs.existsSync(sitemapPath)) {
+    console.error(`Error: sitemap.xml not found at ${sitemapPath}`);
+    process.exit(1);
+}
+
+const sitemapContent = fs.readFileSync(sitemapPath, 'utf8');
+const urlRegex = /<loc>(https:\/\/sync\.koalastuff\.net[^<]+)<\/loc>/g;
+const urls = [];
+let match;
+
+while ((match = urlRegex.exec(sitemapContent)) !== null) {
+    urls.push(match[1]);
+}
+
+if (urls.length === 0) {
+    console.error('Error: No URLs found in sitemap.xml matching https://sync.koalastuff.net');
+    process.exit(1);
+}
+
+console.log(`Parsed ${urls.length} URLs from sitemap.xml.`);
+
+// 3. Prepare IndexNow payload
+const payload = JSON.stringify({
+    host: 'sync.koalastuff.net',
+    key: key,
+    keyLocation: keyLocation,
+    urlList: urls
+});
+
+// 4. Send request to IndexNow API
+function submitIndexNow() {
+    const options = {
+        hostname: 'api.indexnow.org',
+        port: 443,
+        path: '/indexnow',
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json; charset=utf-8',
+            'Content-Length': Buffer.byteLength(payload)
+        }
+    };
+
+    console.log('Sending request to https://api.indexnow.org/indexnow...');
+    const req = https.request(options, (res) => {
+        let responseBody = '';
+        res.on('data', (chunk) => {
+            responseBody += chunk;
+        });
+
+        res.on('end', () => {
+            console.log(`Response Status: ${res.statusCode} ${res.statusMessage}`);
+            if (res.statusCode === 200 || res.statusCode === 202) {
+                console.log('Success! IndexNow has accepted the URLs for re-indexing.');
+            } else {
+                console.error(`IndexNow submission failed. Response body: ${responseBody}`);
+                process.exit(1);
+            }
+        });
+    });
+
+    req.on('error', (e) => {
+        console.error(`Request error: ${e.message}`);
+        process.exit(1);
+    });
+
+    req.write(payload);
+    req.end();
+}
+
+submitIndexNow();

From 3a733934c5c2546a6432c31a49ca5043f0e54bd5 Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 18:01:11 +0200
Subject: [PATCH 122/151] fix(lint): add website/**/*.cjs files to Node globals
 configuration

---
 eslint.config.mjs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/eslint.config.mjs b/eslint.config.mjs
index 8b8cc0f..985b2b6 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -58,7 +58,7 @@ export default [
     }
   },
   {
-    files: ["server/**/*.js", "scripts/**/*.js", "scripts/**/*.cjs", "website/build.cjs"],
+    files: ["server/**/*.js", "scripts/**/*.js", "scripts/**/*.cjs", "website/build.cjs", "website/**/*.cjs"],
     languageOptions: {
       globals: {
         require: "readonly",

From b7622a83473ba576be5279c29ba4345a03ac3610 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 18:30:37 +0200
Subject: [PATCH 123/151] Update feature_request.md

---
 .github/ISSUE_TEMPLATE/feature_request.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/ISSUE_TEMPLATE/feature_request.md b/.github/ISSUE_TEMPLATE/feature_request.md
index 34e8b5f..56727d6 100644
--- a/.github/ISSUE_TEMPLATE/feature_request.md
+++ b/.github/ISSUE_TEMPLATE/feature_request.md
@@ -2,7 +2,7 @@
 name: 🚀 Feature Request
 about: Suggest a new feature or enhancement for KoalaSync
 title: ''
-labels: enhancement
+labels: feature
 assignees: ''
 
 ---

From d3ca2a2378e843f4649ef89456686d687bddb1be Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 22:51:08 +0200
Subject: [PATCH 124/151] docs: update tested services compatibility table and
 contribution guide

---
 docs/TESTED_SERVICES.md | 66 ++++++++++++++++++++++++++---------------
 1 file changed, 42 insertions(+), 24 deletions(-)

diff --git a/docs/TESTED_SERVICES.md b/docs/TESTED_SERVICES.md
index 57c3f63..6c61cba 100644
--- a/docs/TESTED_SERVICES.md
+++ b/docs/TESTED_SERVICES.md
@@ -1,38 +1,56 @@
-# Tested Streaming Services
+# 🎬 Tested Streaming Services & Compatibility
 
-This document tracks which streaming platforms and media servers have been tested with KoalaSync.
+This document tracks which streaming platforms and media servers are supported by the KoalaSync extension. 
 
-| Service | Sync Works | Media Title | Episode Auto-Sync | Notes |
-|---------|:----------:|:-----------:|:-----------------:|-------|
-| **YouTube** | ✅ Full | ✅ Full | ❌ | Individual videos, not episodes — no episode auto-sync. |
-| **Twitch** | ✅ Full | ✅ Full | ❌ | Individual streams/VODs, not episodes — no episode auto-sync. |
-| **Netflix** | ✅ Full | ❌ | ❌ | No media title exposed. |
-| **Emby** | ✅ Full | ✅ Full | ✅ Full | Best-in-class support. |
-| **Jellyfin** | ✅ Full | ✅ Full | ✅ Full | — |
-| **Plex** | Not tested | Not tested | Not tested | — |
-| **Disney+** | ✅ Full | ⚠️ Partial | ❌ | Series title only (e.g. "The Simpsons"), no episode info. |
-| **Prime Video** | ✅ Full  | ✅ Full  | ❌ | — |
-| **HBO Max / Max** | Not tested | Not tested | Not tested | — |
-| **Crunchyroll** | Not tested | Not tested | Not tested | — |
-| **Vimeo** | Not tested | Not tested | Not tested | — |
-| **Dailymotion** | Not tested | Not tested | Not tested | — |
-| **ARD / ZDF Mediathek** | Not tested | Not tested | Not tested | — |
+> [!TIP]
+> **Contributions are highly welcome!** 🤝 Anyone can easily update this list. If you have tested a streaming service (whether it works, has issues, or is not yet listed), please help the project by submitting a quick Pull Request. See the [How to Contribute](#how-to-contribute) guide below!
 
-## Legend
+---
+
+## Compatibility Matrix
+
+| Service | Sync Works | Media Title | Episode Auto-Sync | Last Tested | Tested By | Extension Version | Notes |
+| :--- | :---: | :---: | :---: | :---: | :---: | :---: | :--- |
+| **YouTube** | ✅ Full | ✅ Full | ❌ N/A | — | — | — | Individual videos, not episodes. |
+| **Twitch** | ✅ Full | ✅ Full | ❌ N/A | — | — | — | Individual streams/VODs. |
+| **Netflix** | ✅ Full | ❌ N/A | ❌ N/A | — | — | — | No media title exposed. |
+| **Emby** | ✅ Full | ✅ Full | ✅ Full | — | — | — | Best-in-class support. |
+| **Jellyfin** | ✅ Full | ✅ Full | ✅ Full | — | — | — | — |
+| **Plex** | Not tested | Not tested | Not tested | — | — | — | — |
+| **Disney+** | ✅ Full | ⚠️ Partial | ❌ N/A | — | — | — | Series title only (e.g. "The Simpsons"), no episode info. |
+| **Prime Video** | ✅ Full  | ✅ Full  | ❌ N/A | — | — | — | — |
+| **HBO Max / Max** | Not tested | Not tested | Not tested | — | — | — | — |
+| **Crunchyroll** | Not tested | Not tested | Not tested | — | — | — | — |
+| **Vimeo** | Not tested | Not tested | Not tested | — | — | — | — |
+| **Dailymotion** | Not tested | Not tested | Not tested | — | — | — | — |
+| **ARD / ZDF Mediathek** | Not tested | Not tested | Not tested | — | — | — | — |
+
+### Legend
 
 | Symbol | Meaning |
-|--------|---------|
+| :---: | :--- |
 | ✅ Full | Works without limitations. |
 | ⚠️ Partial | Works with caveats (see Notes). |
-| ❌ N/A | Not applicable or not supported. |
+| ❌ N/A | Not applicable or not supported by the platform. |
+| **Not tested** | Has not been tested yet. |
+
+---
 
 ## How to Contribute
 
-Tested a service that's not listed? Found different behavior than documented?
+Updating this compatibility list is quick and easy! You don't need deep coding skills to contribute:
 
-1. Test KoalaSync on the service with two browser profiles
-2. Use the extension's **Dev tab** to check `readyState`, `currentTime`, and media title
-3. Open a GitHub issue or PR updating this table
+1. **Fork the Repository**: Click the **Fork** button at the top of the [KoalaSync GitHub Repository](https://github.com/Shik3i/KoalaSync).
+2. **Edit this File**: Open [docs/TESTED_SERVICES.md](TESTED_SERVICES.md) in your fork's browser editor (or clone it locally) and update the table with your testing details.
+3. **Commit & Push**: Commit your changes with a clear message (e.g., `docs: update Netflix compatibility status`).
+4. **Create a Pull Request**: Submit the Pull Request (PR) from your fork to our `main` branch.
+
+> [!NOTE]
+> **Reporting Problems:** If you notice a bug or partial support on a service, please open a [GitHub Issue](https://github.com/Shik3i/KoalaSync/issues) describing the problem, and link it in the **Notes** column of the table. 
+> 
+> _If you are unsure how to create/link an issue, don't worry! Simply submit the PR anyway, and the maintainers will gladly create and link the issue for you._
+
+---
 
 ## Technical Background
 

From 82d0bd4eb87bc292453b9f4135224bdb72bc0a62 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 22:54:32 +0200
Subject: [PATCH 125/151] docs: correct Netflix compatibility status from N/A
 to X

---
 docs/TESTED_SERVICES.md | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/docs/TESTED_SERVICES.md b/docs/TESTED_SERVICES.md
index 6c61cba..22c7de8 100644
--- a/docs/TESTED_SERVICES.md
+++ b/docs/TESTED_SERVICES.md
@@ -13,12 +13,12 @@ This document tracks which streaming platforms and media servers are supported b
 | :--- | :---: | :---: | :---: | :---: | :---: | :---: | :--- |
 | **YouTube** | ✅ Full | ✅ Full | ❌ N/A | — | — | — | Individual videos, not episodes. |
 | **Twitch** | ✅ Full | ✅ Full | ❌ N/A | — | — | — | Individual streams/VODs. |
-| **Netflix** | ✅ Full | ❌ N/A | ❌ N/A | — | — | — | No media title exposed. |
+| **Netflix** | ✅ Full | ❌ | ❌ | — | — | — | No media title exposed. |
 | **Emby** | ✅ Full | ✅ Full | ✅ Full | — | — | — | Best-in-class support. |
 | **Jellyfin** | ✅ Full | ✅ Full | ✅ Full | — | — | — | — |
 | **Plex** | Not tested | Not tested | Not tested | — | — | — | — |
-| **Disney+** | ✅ Full | ⚠️ Partial | ❌ N/A | — | — | — | Series title only (e.g. "The Simpsons"), no episode info. |
-| **Prime Video** | ✅ Full  | ✅ Full  | ❌ N/A | — | — | — | — |
+| **Disney+** | ✅ Full | ⚠️ Partial | ❌ | — | — | — | Series title only (e.g. "The Simpsons"), no episode info. |
+| **Prime Video** | ✅ Full  | ✅ Full  | ❌ | — | — | — | — |
 | **HBO Max / Max** | Not tested | Not tested | Not tested | — | — | — | — |
 | **Crunchyroll** | Not tested | Not tested | Not tested | — | — | — | — |
 | **Vimeo** | Not tested | Not tested | Not tested | — | — | — | — |
@@ -31,7 +31,8 @@ This document tracks which streaming platforms and media servers are supported b
 | :---: | :--- |
 | ✅ Full | Works without limitations. |
 | ⚠️ Partial | Works with caveats (see Notes). |
-| ❌ N/A | Not applicable or not supported by the platform. |
+| ❌ | Not supported / does not work. |
+| ❌ N/A | Not applicable (feature does not exist on the platform). |
 | **Not tested** | Has not been tested yet. |
 
 ---

From 44d452a82fd3360771c47e2c569415ebcb75b6c3 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Thu, 2 Jul 2026 22:58:19 +0200
Subject: [PATCH 126/151] docs: update and categorize all entries in
 docs/README.md

---
 docs/README.md | 32 +++++++++++++++++++++++++++-----
 1 file changed, 27 insertions(+), 5 deletions(-)

diff --git a/docs/README.md b/docs/README.md
index edd0e49..47d10ab 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -1,8 +1,30 @@
 # Technical Documentation
 
-This directory contains deep-dives into the KoalaSync protocol and architecture.
+This directory contains deep-dives into the KoalaSync protocol, architecture, roadmap, and operational guidelines.
 
-- [HOW_IT_WORKS.md](HOW_IT_WORKS.md): Step-by-step walkthrough of every user flow, from room creation to synchronized playback. Ideal for store reviewers and manual testers.
-- [ARCHITECTURE.md](ARCHITECTURE.md): Communication flows, Dual Heartbeat, and Sync logic.
-- [SYNC_GUIDE.md](SYNC_GUIDE.md): Protocol constants and sync requirements.
-- [TRANSLATION.md](TRANSLATION.md): Translation and localization guide for the extension and website.
+## 🏗️ Core Architecture & Design
+
+- **[ARCHITECTURE.md](ARCHITECTURE.md)**: Overview of the communication flows, Dual Heartbeat architecture, and synchronization logic.
+- **[HOW_IT_WORKS.md](HOW_IT_WORKS.md)**: Step-by-step walkthrough of every user flow, from room creation to synchronized playback. Ideal for store reviewers and manual testers.
+- **[host-control-mode.md](host-control-mode.md)**: Design, requirements, and edge cases of the Host Control feature.
+
+## 📡 Protocol & Synchronization
+
+- **[PROTOCOL.md](PROTOCOL.md)**: Low-level message format and payload descriptions for the KoalaSync sync protocol.
+- **[SYNC_GUIDE.md](SYNC_GUIDE.md)**: Guide on keeping protocol constants synchronized across the workspace.
+
+## 📋 Compatibility, Roadmap & Contribution
+
+- **[TESTED_SERVICES.md](TESTED_SERVICES.md)**: Status of compatibility with major streaming services and contribution guidelines for testing new platforms.
+- **[KNOWN_LIMITATIONS.md](KNOWN_LIMITATIONS.md)**: Threat model and accepted design limitations (NOFIX entries) for security audits.
+- **[ROADMAP.md](ROADMAP.md)**: Planned features, backlog items, and rejected proposals.
+- **[TRANSLATION.md](TRANSLATION.md)**: Guide for native speakers to contribute and audit dynamic extension/website translations.
+
+## 🚀 DevOps & Releases
+
+- **[devops.md](devops.md)**: Guide on the automated tag-based release pipeline.
+- **[CHANGELOG.md](CHANGELOG.md)**: Detailed history of releases and changes.
+
+---
+
+*For high-level project information and developer setup instructions, refer to the root [README.md](../README.md).*

From e5a4032710c74915c70c4226de79df1ad2930e4f Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 10:01:15 +0200
Subject: [PATCH 127/151] work in progress: UI overhaul updates, new logo, and
 localization translations

---
 LANDINGPAGE_UI_OVERHAUL_PLAN.md    | 153 +++++++
 eslint.config.mjs                  |   2 +
 website/app.js                     | 387 ++++++++++++++++
 website/assets/NewLogoIcon_64.webp | Bin 1282 -> 1282 bytes
 website/locales/de.json            |   6 +
 website/locales/en.json            |   8 +-
 website/locales/es.json            |   6 +
 website/locales/fr.json            |   6 +
 website/locales/it.json            |   6 +
 website/locales/ja.json            |   8 +-
 website/locales/ko.json            |   8 +-
 website/locales/nl.json            |   6 +
 website/locales/pl.json            |   6 +
 website/locales/pt-BR.json         |   6 +
 website/locales/pt.json            |   6 +
 website/locales/ru.json            |   6 +
 website/locales/tr.json            |   6 +
 website/locales/uk.json            |   6 +
 website/locales/zh.json            |  18 +-
 website/style.css                  | 692 +++++++++++++++++++++++++++++
 website/template.html              | 117 ++++-
 21 files changed, 1442 insertions(+), 17 deletions(-)
 create mode 100644 LANDINGPAGE_UI_OVERHAUL_PLAN.md

diff --git a/LANDINGPAGE_UI_OVERHAUL_PLAN.md b/LANDINGPAGE_UI_OVERHAUL_PLAN.md
new file mode 100644
index 0000000..e6e8dea
--- /dev/null
+++ b/LANDINGPAGE_UI_OVERHAUL_PLAN.md
@@ -0,0 +1,153 @@
+> **TEMPORÄR:** Diese Datei dient nur der gemeinsamen Planung des Landingpage-UI-Overhauls
+> auf dem Branch `landingpage-ui-overhaul`. Sie ist **kein** Teil des finalen Features und
+> **muss vor dem Öffnen des PRs wieder gelöscht werden**.
+
+# Landingpage UI Overhaul — Hero Mockup
+
+## Ausgangslage
+Die Landingpage (`website/template.html`, `website/style.css`, `website/app.js`, kompiliert
+via `website/build.cjs` nach `website/www/`) ist bereits sehr gut, soll aber **statisch und
+backend-frei** bleiben. Einziger Fokus dieses Overhauls: das rechte Hero-Mockup
+(`.hero-mockup-wrapper` / `.extension-mockup`, `template.html:304-579`).
+
+**Heutiger Zustand:** Ein 1:1-Nachbau des Extension-Popups mit 4 Tabs (Room / Sync /
+Settings / Status). Tab-Wechsel nur per Klick (`app.js:391-407`), keine Animationen, kein
+Auto-Play, kein Bezug zu den eigentlichen Video-Tabs, die synchronisiert werden.
+
+## Ziel
+Ein dynamischeres, platzoptimiertes Hero-Visual, das das Kernversprechen von KoalaSync
+("zwei Browser-Tabs synchron abspielen") direkt zeigt — mit echten Animationen, einem
+automatischen Durchlauf beim ersten Sichtbarwerden und voller manueller Bedienbarkeit
+danach. Auf Mobile (Bildschirmgröße) bleibt exakt das heutige, statische Popup-Mockup
+erhalten — kein neues Mobile-Design nötig, kein zusätzlicher Wartungsaufwand dort.
+
+## Getroffene Entscheidungen (aus Rückfrage-Runde)
+
+1. **Layout:** Gestapelt/Layered — zwei Browser-Tab-Karten leicht versetzt im Hintergrund
+   (Tiefeneffekt via `transform`/`box-shadow`), Extension-Popup öffnet sich als Overlay
+   davor/darüber.
+2. **Tab-Inhalt:** Abstraktes Video-Mock — Gradient-Placeholder als "Video", Play-Button,
+   Fortschrittsbalken, Timestamp. Kein echtes Videomaterial, keine Marken/Logos, im
+   bestehenden minimalistischen `mock-*`-Stil.
+3. **Auto-Play-Verhalten:** Einmaliger Durchlauf beim Sichtbarwerden (IntersectionObserver),
+   danach reiner manueller Modus. Kein Endlos-Loop im Hintergrund.
+4. **Popup-Umfang:** Alle 4 Tabs (Room/Sync/Settings/Status) bleiben inhaltlich unverändert
+   — nur in die neue Animations-/Overlay-Logik eingebettet, kein Content-Kahlschlag.
+
+## Vorgeschlagenes Storyboard (einmaliger Auto-Durchlauf)
+
+1. **Ausgangszustand:** Zwei Tab-Karten ("Tab A" / "Tab B") sichtbar, Video-Mocks pausiert,
+   Fortschrittsbalken bei 0. Popup geschlossen, nur ein kleiner Launcher-Button sichtbar.
+2. Popup öffnet sich (scale/slide-in) vor den Tab-Karten.
+3. Simulierter Klick auf "Play" im Sync-Tab → beide Tab-Karten starten gleichzeitig
+   (Fortschrittsbalken laufen synchron), begleitet von einem kurzen "Sync-Pulse"
+   (Glow/Connection-Line) zwischen den beiden Karten.
+4. Nach ein paar Sekunden: simulierter Klick auf "Pause" → beide Tabs pausieren synchron.
+5. Popup schließt sich, Endzustand bleibt stehen (beide Tabs pausiert, synchron,
+   "Synced"-Indikator dezent sichtbar) — kein Reset auf Ausgangszustand.
+6. **Danach/parallel volle manuelle Steuerung:**
+   - Klick auf eine Tab-Karte togglet deren eigenes Play/Pause *unabhängig* — spielt eine
+     Karte allein, laufen die Fortschrittsbalken bewusst auseinander ("out of sync"), um den
+     Schmerzpunkt zu illustrieren, den KoalaSync löst.
+   - Klick auf Play/Pause im Popup synchronisiert immer beide Tabs.
+   - Popup lässt sich jederzeit manuell öffnen/schließen, Tabs (Room/Sync/Settings/Status)
+     bleiben wie heute klickbar.
+   - Jede manuelle Interaktion während des Auto-Durchlaufs bricht diesen sofort ab und
+     übergibt die volle Kontrolle.
+
+## Technischer Ansatz (Vorschlag)
+
+- **Keine neuen Dependencies** — reines Vanilla JS + CSS, passend zur "Zero-Dependency"-
+  Philosophie des Projekts (siehe `website/README.md`).
+- **Eine "Director"-Funktion** in `app.js`, die exakt dieselben Click-Handler wie die
+  manuelle Bedienung aufruft (kein doppelter Code-Pfad zwischen Auto- und Manual-Modus).
+- **IntersectionObserver** triggert den einmaligen Durchlauf beim ersten Sichtbarwerden.
+- **`prefers-reduced-motion`**: Auto-Durchlauf und Cursor-Ripple-Indikatoren werden
+  übersprungen, Endzustand wird direkt gesetzt (Pattern existiert bereits in
+  `style.css:2915-2939`).
+- **Kein DOM-Duplikat für Mobile:** Das Popup-Markup bleibt eine einzige Quelle. Der neue
+  `.hero-mockup-dynamic`-Wrapper enthält die Tab-Karten + das Popup; unterhalb des
+  bestehenden Breakpoints (768px, siehe `style.css:1913`) werden die Tab-Karten und
+  Animationen per CSS ausgeblendet, das Popup fällt optisch auf das heutige, statische
+  Erscheinungsbild zurück, JS initialisiert dort keine Animationen. Vermeidet doppelte
+  i18n-Pflege der ~270 Zeilen Popup-Markup.
+- **i18n-Vorsicht:** 15 Locale-Dateien unter `website/locales/*.json`. Neue sichtbare Texte
+  (Tab-Labels etc.) nach Möglichkeit vermeiden oder wie bestehende Mock-Inhalte
+  (z. B. "CoolUsername", "Stranger Things - S4E1") als nicht-lokalisierte Platzhalter
+  behandeln, um Übersetzungsaufwand in 15 Sprachen zu vermeiden. Neue `{{MOCK_XX}}`-Keys nur
+  falls wirklich nötig, dann mit Übersetzung in allen 15 Dateien.
+- **Build:** Änderungen nur in den Source-Dateien (`template.html`, `style.css`, `app.js`),
+  niemals in `website/www/**` (generiert via `website/build.cjs`).
+
+## Detailentscheidungen (bei der Umsetzung getroffen)
+
+- [x] Breakpoint Mobile-Fallback: bestehende 768px übernommen (`matchMedia('(min-width: 769px)')`
+      im JS, `@media (max-width: 768px)` im CSS).
+- [x] Auto-Durchlauf-Timing: Start ~1,4s nach 45% Sichtbarkeit (IntersectionObserver), dann
+      Cursor → Launcher → Sync-Tab → Play (läuft ~3s synchron) → Pause → Popup schließt.
+      Gesamtdauer ca. 10s.
+- [x] Tab-Karten haben User-Badges passend zur Peer-Liste im Popup: "CoolUsername" (indigo)
+      und "KoalaPC" (grün), gleicher Episodentitel "Stranger Things - S4E1".
+- [x] Echter animierter Ghost-Mauszeiger (SVG-Cursor mit Klick-Ripple), kein reiner
+      Ripple-Indikator — verkauft den Durchlauf deutlich besser.
+- [x] Keine externe Referenz — eigener Stil, konsistent mit dem bestehenden `mock-*`-Design.
+- [x] ~~Drift-Konzept~~ **Verworfen nach Feedback** — es stellte die Extension falsch dar
+      (als bräuchte sie das offene Popup). Ersetzt durch das **Broadcast-Modell**: Play/
+      Pause/Seek auf *irgendeinem* Video wird automatisch zum Peer gespiegelt (Puls wandert
+      über die Verbindungslinie, Peer folgt ~260ms später, Engine gleicht die Zeit an). Der
+      Status-Chip bleibt grün "In sync" und blitzt bei jedem Broadcast kurz das Event auf
+      ("▶ CoolUsername", "❚❚ KoalaPC", "» …" für Seek). Das Popup ist nur die Fernbedienung
+      obendrauf, nie Voraussetzung.
+- [x] Rework 2 nach Feedback: Kein reservierter Popup-Platz mehr; KoalaSync-Icon als
+      Extension-Button in der Toolbar des vorderen Fensters; Fortschrittsbalken klickbar
+      (Seek wird mitgesynct, Scrub-Thumb bei Hover).
+- [x] Rework 3 nach Feedback: Fenster-Kaskade statt starker Überlappung — das **rechte**
+      Fenster (CoolUsername, mit dem Toolbar-Icon oben rechts) liegt im Vordergrund, das
+      linke (KoalaPC) versetzt dahinter unten links. Das Popup öffnet **rechts außen**
+      (right: 0, verankert unterm Icon), die beiden Tabs weichen dabei animiert nach links
+      aus und bleiben sichtbar. Verbindungslinie komplett entfernt (Sync-Feedback = Puls-
+      Ring auf beiden Karten + Event-Chip). Peer-Latenz von 260ms auf 90ms gesenkt — wirkt
+      quasi instant.
+- [x] Rework 4 nach Feedback: **Story-Walkthrough in 5 Akten** beim ersten Sichtbarwerden —
+      (1) Extension über das Toolbar-Icon öffnen, (2) "Raum erstellen" (eigener Pre-Room-
+      Screen im Popup, `#demo-room-empty`), (3) Invite-Link fliegt animiert vom Popup zum
+      zweiten Browserfenster (Toast "Raum beigetreten", KoalaPC erscheint in der Peer-Liste,
+      "IN SYNC"-Chip blendet erst jetzt ein), (4) beide wählen den Video-Tab (Select-Flash im
+      Popup + Toast am zweiten Fenster), (5) Play für alle → Popup schließt → Pause vom
+      anderen Tab, Seek mit Nachziehen, Play. Danach voll manuell. Jede Interaktion während
+      der Story bricht ab und springt via idempotentem `finishDemo()` sofort in den End-
+      zustand (Raum verbunden, Chip an, Hint an; Popup schließt bei Klicks außerhalb);
+      der Nutzer-Klick wirkt anschließend normal. 4 neue Locale-Keys (DEMO_NO_ROOM,
+      DEMO_CREATE_ROOM, DEMO_JOINED, DEMO_TAB_SELECTED) in allen 15 Sprachen.
+- [x] Abspiel-Animation: abstrakter **Strichfigur-Kurzfilm** pro Video (SVG: Hügel-
+      Silhouetten, laufende Figur mit schwingenden Armen/Beinen, hüpfender Ball) — läuft
+      nur bei `playing`, Pause friert beide Filme im selben Frame ein
+      (`animation-play-state`), was die Synchronität sofort sichtbar macht.
+
+## Umsetzungsstatus
+
+- [x] `website/template.html`: Hero-Mockup in `.hero-demo-scene` eingebettet (Chip, 2 Tab-
+      Karten, Verbindungslinie, Launcher, Ghost-Cursor, Hint); Popup-Inhalt unverändert,
+      nur IDs für Play/Pause/Force-Sync ergänzt.
+- [x] `website/style.css`: Demo-Styles mit Container-Queries (cqw + px-Fallbacks),
+      Mobile-Fallback, `prefers-reduced-motion`-Support.
+- [x] `website/app.js`: `initHeroDemo()` — Playback-Uhr (rAF, 8x Zeitraffer), Broadcast-
+      Logik (Play/Pause/Seek → Peer folgt), manuelle Steuerung, einmaliger Auto-Durchlauf
+      (Play in Tab A → Seek in Tab B → Pause in Tab B → Popup öffnen/Play/schließen); jede
+      Interaktion bricht den Durchlauf sofort ab. Auto- und Manuell-Modus nutzen dieselben
+      Click-Handler. Launcher-Klicks sind vom Karten-Play/Pause entkoppelt (closest-Guard).
+- [x] `website/locales/*.json`: 3 neue Keys (`DEMO_SYNC`, `DEMO_DRIFT`, `DEMO_HINT`) in
+      allen 15 Sprachen.
+- [x] `eslint.config.mjs`: `requestAnimationFrame`/`cancelAnimationFrame` zu den Globals.
+- [x] Verifiziert im Browser-Preview: Auto-Durchlauf, Drift-Szenario, Chip-Rettungsweg,
+      Re-Sync, Mobile-Fallback (statisches Popup wie vorher), keine Konsolenfehler,
+      Lint sauber, Build ohne offene Platzhalter.
+- [ ] `.claude/launch.json` zeigt auf einen Session-Scratchpad-Server — vor dem PR prüfen,
+      ob die Datei ins Repo soll (ggf. löschen oder auf dauerhaften Pfad umstellen).
+
+## Scope / Nicht-Ziele
+
+- Kein Backend, keine echten Videos/Assets, keine neuen npm-Dependencies.
+- Kein Umbau des restlichen Landingpage-Contents (Features, Compat-Section, Footer etc.) —
+  ausschließlich das Hero-Mockup.
+- Mobile-Ansicht bekommt **kein** neues Design, bleibt 1:1 der heutige Stand.
diff --git a/eslint.config.mjs b/eslint.config.mjs
index 985b2b6..7902694 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -18,6 +18,8 @@ export default [
         setInterval: "readonly",
         clearTimeout: "readonly",
         clearInterval: "readonly",
+        requestAnimationFrame: "readonly",
+        cancelAnimationFrame: "readonly",
         fetch: "readonly",
         CustomEvent: "readonly",
         MutationObserver: "readonly",
diff --git a/website/app.js b/website/app.js
index ac494c5..36b2921 100644
--- a/website/app.js
+++ b/website/app.js
@@ -406,6 +406,393 @@ document.addEventListener('DOMContentLoaded', () => {
         });
     });
 
+    // --- Hero Live Demo (two synced video tabs + extension popup) ---
+    // Desktop only: on mobile the scene falls back to the classic static popup.
+    const initHeroDemo = () => {
+        const scene = document.getElementById('hero-demo');
+        if (!scene || !window.matchMedia('(min-width: 769px)').matches) return;
+
+        const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
+
+        const launcher = scene.querySelector('#demo-launcher');
+        const chip = scene.querySelector('#demo-sync-chip');
+        const cursor = scene.querySelector('#demo-cursor');
+        const hint = document.getElementById('demo-hint');
+        const playBtn = scene.querySelector('#demo-play-btn');
+        const pauseBtn = scene.querySelector('#demo-pause-btn');
+        const forceSyncBtn = scene.querySelector('#demo-force-sync');
+        const syncTabBtn = scene.querySelector('.mock-tab[data-target="mock-sync"]');
+        const roomEmpty = scene.querySelector('#demo-room-empty');
+        const roomJoined = scene.querySelector('#demo-room-joined');
+        const createRoomBtn = scene.querySelector('#demo-create-room');
+        const inviteCopyBtn = scene.querySelector('#demo-invite-copy');
+        const videoSelect = scene.querySelector('#demo-video-select');
+        const peerBs = scene.querySelectorAll('.demo-peer-b');
+        const inviteFly = scene.querySelector('#demo-invite-fly');
+        const toastB = scene.querySelector('#demo-toast-b');
+        if (!launcher || !chip || !cursor || !playBtn || !pauseBtn) return;
+
+        const EP_LEN = 2537;   // fake 42:17 episode
+        const RATE = 8;        // timelapse factor so the demo feels alive
+        const START_T = 754;   // 12:34
+
+        const tabs = {};
+        ['a', 'b'].forEach(k => {
+            const root = scene.querySelector('#demo-tab-' + k);
+            tabs[k] = {
+                root,
+                fill: root.querySelector('.demo-progress-fill'),
+                time: root.querySelector('.demo-time'),
+                t: START_T,
+                playing: false
+            };
+        });
+
+        const fmt = (s) => {
+            s = Math.floor(s);
+            return Math.floor(s / 60) + ':' + String(s % 60).padStart(2, '0');
+        };
+
+        const renderTab = (tab) => {
+            tab.fill.style.width = ((tab.t / EP_LEN) * 100).toFixed(2) + '%';
+            tab.time.textContent = fmt(tab.t);
+        };
+
+        const updateSyncUI = () => {
+            scene.classList.toggle('streaming', tabs.a.playing && tabs.b.playing);
+        };
+
+        // Playback clock (runs only while at least one tab is playing)
+        let rafId = null;
+        let lastTs = null;
+
+        const tick = (ts) => {
+            rafId = null;
+            const dt = lastTs === null ? 0 : Math.min((ts - lastTs) / 1000, 0.5);
+            lastTs = ts;
+            let anyPlaying = false;
+            ['a', 'b'].forEach(k => {
+                const tab = tabs[k];
+                if (!tab.playing) return;
+                anyPlaying = true;
+                tab.t = (tab.t + dt * RATE) % EP_LEN;
+                renderTab(tab);
+            });
+            updateSyncUI();
+            if (anyPlaying) rafId = requestAnimationFrame(tick);
+            else lastTs = null;
+        };
+
+        const ensureLoop = () => {
+            if (rafId === null && (tabs.a.playing || tabs.b.playing)) {
+                lastTs = null;
+                rafId = requestAnimationFrame(tick);
+            }
+        };
+
+        const setPlaying = (k, playing) => {
+            const tab = tabs[k];
+            tab.playing = playing;
+            tab.root.classList.toggle('playing', playing);
+            tab.root.setAttribute('aria-pressed', playing ? 'true' : 'false');
+            ensureLoop();
+            updateSyncUI();
+        };
+
+        const pulse = () => {
+            ['a', 'b'].forEach(k => {
+                const el = tabs[k].root;
+                el.classList.remove('sync-pulse');
+                void el.offsetWidth; // restart the CSS animation
+                el.classList.add('sync-pulse');
+            });
+        };
+
+        const NAMES = { a: 'CoolUsername', b: 'KoalaPC' };
+        const chipEvent = chip.querySelector('.demo-chip-event');
+
+        let eventTimer = null;
+        const showEvent = (text) => {
+            if (!chipEvent) return;
+            chipEvent.textContent = text;
+            chip.classList.add('event');
+            clearTimeout(eventTimer);
+            eventTimer = setTimeout(() => chip.classList.remove('event'), 1600);
+        };
+
+        // Core of the demo: play/pause on EITHER side is broadcast to the peer
+        // tab — exactly what the extension does. The popup is just a remote
+        // control on top, never a requirement.
+        let broadcasting = false;
+        const broadcast = (sourceKey, playing) => {
+            if (broadcasting) return;
+            broadcasting = true;
+            const peerKey = sourceKey === 'a' ? 'b' : 'a';
+            setPlaying(sourceKey, playing);
+            showEvent((playing ? '▶ ' : '❚❚ ') + NAMES[sourceKey]);
+            // the peer follows near-instantly — that is the whole point
+            setTimeout(() => {
+                tabs[peerKey].t = tabs[sourceKey].t;
+                setPlaying(peerKey, playing);
+                renderTab(tabs[peerKey]);
+                pulse();
+                broadcasting = false;
+            }, 90);
+        };
+
+        // Seeking works the same way: scrub one tab, the peer jumps along
+        const seekTo = (sourceKey, fraction) => {
+            if (broadcasting) return;
+            broadcasting = true;
+            const peerKey = sourceKey === 'a' ? 'b' : 'a';
+            tabs[sourceKey].t = fraction * EP_LEN;
+            renderTab(tabs[sourceKey]);
+            showEvent('» ' + NAMES[sourceKey]);
+            setTimeout(() => {
+                tabs[peerKey].t = tabs[sourceKey].t;
+                renderTab(tabs[peerKey]);
+                pulse();
+                broadcasting = false;
+            }, 90);
+        };
+
+        const setPopupOpen = (open) => {
+            scene.classList.toggle('popup-open', open);
+            launcher.setAttribute('aria-expanded', open ? 'true' : 'false');
+        };
+
+        // Manual controls (the automated walkthrough drives these same handlers)
+        launcher.addEventListener('click', () => setPopupOpen(!scene.classList.contains('popup-open')));
+
+        // The popup remote control acts as CoolUsername (tab A's user)
+        playBtn.addEventListener('click', () => {
+            if (tabs.a.playing && tabs.b.playing) { pulse(); return; }
+            broadcast('a', true);
+        });
+        pauseBtn.addEventListener('click', () => {
+            if (!tabs.a.playing && !tabs.b.playing) { pulse(); return; }
+            broadcast('a', false);
+        });
+        if (forceSyncBtn) forceSyncBtn.addEventListener('click', () => {
+            tabs.b.t = tabs.a.t = Math.max(tabs.a.t, tabs.b.t);
+            renderTab(tabs.a);
+            renderTab(tabs.b);
+            pulse();
+        });
+
+        ['a', 'b'].forEach(k => {
+            const root = tabs[k].root;
+            const toggle = () => broadcast(k, !tabs[k].playing);
+            // the toolbar extension icon lives inside card A — its clicks
+            // toggle the popup, not playback
+            root.addEventListener('click', (e) => {
+                if (e.target.closest('.demo-ext-launcher')) return;
+                toggle();
+            });
+            root.addEventListener('keydown', (e) => {
+                if (e.target.closest('.demo-ext-launcher')) return;
+                if (e.key === 'Enter' || e.key === ' ') {
+                    e.preventDefault();
+                    toggle();
+                }
+            });
+
+            const progress = root.querySelector('.demo-progress');
+            if (progress) {
+                progress.addEventListener('click', (e) => {
+                    e.stopPropagation(); // a scrub must not toggle play/pause
+                    const r = progress.getBoundingClientRect();
+                    seekTo(k, Math.min(Math.max((e.clientX - r.left) / r.width, 0), 1));
+                });
+            }
+        });
+
+        chip.addEventListener('click', pulse);
+
+        // --- Story state (room creation -> invite -> connected) ---
+        const setRoomJoined = (joined) => {
+            if (roomEmpty) roomEmpty.style.display = joined ? 'none' : 'flex';
+            if (roomJoined) roomJoined.style.display = joined ? '' : 'none';
+        };
+
+        const setConnected = (connected) => {
+            scene.classList.toggle('connected', connected);
+            peerBs.forEach(el => { el.style.display = connected ? '' : 'none'; });
+        };
+
+        let toastTimer = null;
+        const showToastB = (text) => {
+            if (!toastB || !text) return;
+            toastB.textContent = '✓ ' + text;
+            toastB.classList.add('show');
+            clearTimeout(toastTimer);
+            toastTimer = setTimeout(() => toastB.classList.remove('show'), 1700);
+        };
+
+        // The invite link visibly travels from the popup to the friend's window
+        const flyInvite = () => new Promise((resolve) => {
+            if (!inviteFly || !inviteCopyBtn) { resolve(); return; }
+            const sr = scene.getBoundingClientRect();
+            const from = inviteCopyBtn.getBoundingClientRect();
+            const to = tabs.b.root.querySelector('.demo-tab-titlebar').getBoundingClientRect();
+            inviteFly.style.transition = 'none';
+            inviteFly.style.left = (from.left - sr.left) + 'px';
+            inviteFly.style.top = (from.top - sr.top) + 'px';
+            inviteFly.style.opacity = '1';
+            void inviteFly.offsetWidth;
+            inviteFly.style.transition = '';
+            inviteFly.style.left = (to.left - sr.left + to.width / 2 - 40) + 'px';
+            inviteFly.style.top = (to.top - sr.top + 2) + 'px';
+            setTimeout(() => {
+                inviteFly.style.opacity = '0';
+                resolve();
+            }, 800);
+        });
+
+        const flashSelect = () => {
+            if (!videoSelect) return;
+            videoSelect.classList.remove('demo-attn');
+            void videoSelect.offsetWidth;
+            videoSelect.classList.add('demo-attn');
+        };
+
+        if (createRoomBtn) createRoomBtn.addEventListener('click', () => setRoomJoined(true));
+
+        renderTab(tabs.a);
+        renderTab(tabs.b);
+        updateSyncUI();
+
+        // JS is active: start with the popup tucked away and, if the scripted
+        // story is going to run, rewind to the "before" state (no transitions
+        // on load).
+        scene.classList.add('demo-no-anim');
+        if (!reduceMotion) {
+            setPopupOpen(false);
+            setConnected(false);
+            setRoomJoined(false);
+        }
+        void scene.offsetWidth;
+        scene.classList.remove('demo-no-anim');
+
+        const showHint = () => {
+            if (hint) hint.classList.add('show');
+        };
+
+        // Automated one-time walkthrough; any interaction aborts it and jumps
+        // straight to the finished end state, then the user's click applies.
+        let userTookOver = false;
+        let demoStarted = false;
+        let demoFinished = false;
+        let demoFinishedByStory = false;
+
+        const finishDemo = () => {
+            if (demoFinished) return;
+            demoFinished = true;
+            setRoomJoined(true);
+            setConnected(true);
+            cursor.classList.remove('visible');
+            showHint();
+        };
+
+        const takeOver = (e) => {
+            const firstTake = !userTookOver;
+            userTookOver = true;
+            finishDemo();
+            // if the story left the popup open and the user clicked elsewhere,
+            // tuck it away; clicks inside the popup (or on its icon) keep it
+            if (firstTake && !demoFinishedByStory && e && e.target &&
+                !e.target.closest('.extension-mockup') &&
+                !e.target.closest('.demo-ext-launcher')) {
+                setPopupOpen(false);
+            }
+        };
+        scene.addEventListener('pointerdown', takeOver, true);
+        scene.addEventListener('keydown', takeOver, true);
+
+        const runDemo = async () => {
+            if (demoStarted || userTookOver || reduceMotion) return;
+            demoStarted = true;
+
+            const wait = (ms) => new Promise(r => setTimeout(r, ms));
+            const moveTo = async (el, fx) => {
+                const sr = scene.getBoundingClientRect();
+                const er = el.getBoundingClientRect();
+                cursor.style.left = (er.left - sr.left + er.width * (fx || 0.5)) + 'px';
+                cursor.style.top = (er.top - sr.top + er.height / 2) + 'px';
+                await wait(700);
+            };
+            const step = async (el, pause, action, fx) => {
+                if (userTookOver || !el) return false;
+                await moveTo(el, fx);
+                if (userTookOver) return false;
+                cursor.classList.remove('clicking');
+                void cursor.offsetWidth;
+                cursor.classList.add('clicking');
+                await wait(180);
+                if (userTookOver) return false;
+                if (action) action(); else el.click();
+                await wait(320 + (pause || 0));
+                return !userTookOver;
+            };
+
+            await wait(500);
+            if (userTookOver) return;
+            cursor.classList.add('visible');
+            await wait(400);
+
+            const progressA = tabs.a.root.querySelector('.demo-progress');
+
+            // Act 1: open the extension and create a room
+            if (!await step(launcher, 300)) return;
+            if (!await step(createRoomBtn, 500)) return;
+
+            // Act 2: the invite link travels to the friend's browser
+            if (!await step(inviteCopyBtn, 0)) return;
+            await flyInvite();
+            if (userTookOver) return;
+            setConnected(true);
+            showToastB(toastB ? toastB.dataset.joined : '');
+            pulse();
+            await wait(900);
+            if (userTookOver) return;
+
+            // Act 3: both sides pick the video tab to sync
+            if (!await step(syncTabBtn, 250)) return;
+            if (!await step(videoSelect, 150, flashSelect)) return;
+            showToastB(toastB ? toastB.dataset.selected : '');
+            await wait(700);
+            if (userTookOver) return;
+
+            // Act 4: play for everyone, then tuck the popup away
+            if (!await step(playBtn, 1800)) return;
+            if (!await step(launcher, 500)) return;
+
+            // Act 5: any side can control — pause there, seek here, play again
+            if (!await step(tabs.b.root, 1000)) return;
+            if (!await step(progressA, 1300, () => seekTo('a', 0.62), 0.62)) return;
+            if (!await step(tabs.a.root, 700)) return;
+
+            demoFinishedByStory = true;
+            finishDemo();
+        };
+
+        if ('IntersectionObserver' in window && !reduceMotion) {
+            const demoObserver = new IntersectionObserver((entries) => {
+                entries.forEach(entry => {
+                    if (entry.isIntersecting) {
+                        demoObserver.disconnect();
+                        setTimeout(runDemo, 900);
+                    }
+                });
+            }, { threshold: 0.45 });
+            demoObserver.observe(scene);
+        } else {
+            finishDemo();
+        }
+    };
+
+    initHeroDemo();
+
     // Terminal Tab Switcher
     const termTabBtns = document.querySelectorAll('.terminal-tab-btn');
     const termPanes = document.querySelectorAll('.terminal-pane');
diff --git a/website/assets/NewLogoIcon_64.webp b/website/assets/NewLogoIcon_64.webp
index b1f4e43ede2c8f7304360593b419303eb296c0d2..660ffe28987821948744dafb8543121d3c9924ee 100644
GIT binary patch
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delta 175
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diff --git a/website/locales/de.json b/website/locales/de.json
index 06c8e57..54c82ff 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Gemeinsam schauen.<span class='hero-line2'>Perfekt synchron.</span>",
   "HERO_SUBTITLE": "Dein Kino-Abend auf Distanz. Keine Lags, keine Anmeldung. Einfach Link teilen und zusammen schauen.",
   "HERO_MASCOT_ALT": "Ein niedlicher Koala steht da und schaut nach unten auf die Download-Buttons",
+  "DEMO_SYNC": "Synchron",
+  "DEMO_HINT": "Live-Demo — drück Play in einem der Tabs: KoalaSync hält beide synchron.",
+  "DEMO_NO_ROOM": "Noch nicht verbunden",
+  "DEMO_CREATE_ROOM": "Raum erstellen",
+  "DEMO_JOINED": "Raum beigetreten",
+  "DEMO_TAB_SELECTED": "Tab ausgewählt",
   "ADD_TO_CHROME": "Zu Chrome hinzufügen",
   "ADD_TO_FIREFOX": "Zu Firefox hinzufügen",
   "COMPAT_HEADING": "Funktioniert auf deinen Lieblingsplattformen",
diff --git a/website/locales/en.json b/website/locales/en.json
index 3024053..4134bbb 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Watch Together.<span class='hero-line2'>Sync Perfectly.</span>",
   "HERO_SUBTITLE": "Your remote movie night without lags. No registration, no data collection. Just share a link and watch together.",
   "HERO_MASCOT_ALT": "A cute koala standing and looking down at the download buttons",
+  "DEMO_SYNC": "In sync",
+  "DEMO_HINT": "Live demo — press play in either tab: KoalaSync keeps both in sync.",
+  "DEMO_NO_ROOM": "Not connected yet",
+  "DEMO_CREATE_ROOM": "Create Room",
+  "DEMO_JOINED": "Room joined",
+  "DEMO_TAB_SELECTED": "Tab selected",
   "ADD_TO_CHROME": "Add to Chrome",
   "ADD_TO_FIREFOX": "Add to Firefox",
   "COMPAT_HEADING": "Works on your favorite platforms",
@@ -194,7 +200,7 @@
   "ALT_TELEPARTY_SUMMARY_BODY": "If you want built-in chat or mobile support, Teleparty may be the better fit. If you want free, open-source desktop browser sync that works with almost any normal video player, including self-hosted media servers like Emby, Jellyfin and Plex, KoalaSync is probably the better match.",
   "ALT_SCREEN_TITLE": "KoalaSync vs screen sharing: when is video sync better?",
   "ALT_SCREEN_META_DESC": "A practical comparison of KoalaSync and screen sharing for remote movie nights, playback control, video quality, privacy, subtitles and browser-based watching.",
-  "ALT_SCREEN_INTRO": "Screen sharing works, and sometimes it is honestly enough. One person shares their screen, everyone else watches, and you are done.<br><br>But for longer movie nights or watching episodes together, it can get annoying. The video quality depends on the sharer\u2019s upload, CPU, browser, and whatever compression Discord, Teamspeak, Zoom or another call app applies. Also, only one person really controls the playback.",
+  "ALT_SCREEN_INTRO": "Screen sharing works, and sometimes it is honestly enough. One person shares their screen, everyone else watches, and you are done.<br><br>But for longer movie nights or watching episodes together, it can get annoying. The video quality depends on the sharer’s upload, CPU, browser, and whatever compression Discord, Teamspeak, Zoom or another call app applies. Also, only one person really controls the playback.",
   "ALT_SCREEN_WHEN_ENOUGH_TITLE": "When screen sharing is enough",
   "ALT_SCREEN_WHEN_ENOUGH_BODY": "Screen sharing is fine when you want the fastest possible setup. If only one person has access to the video, or everyone is okay with one person controlling play, pause and seeking, it may be the simplest option.<br><br>It also makes sense when quality is not a big deal, when nobody needs their own subtitles or audio settings, and when the person sharing is comfortable showing that browser window or screen.",
   "ALT_SCREEN_WHEN_ANNOYING_TITLE": "Where screen sharing gets annoying",
diff --git a/website/locales/es.json b/website/locales/es.json
index 7f57203..342cca6 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Miren juntos.<span class='hero-line2'>Sincronización perfecta.</span>",
   "HERO_SUBTITLE": "Tu noche de películas a distancia sin retrasos. Sin registros ni recopilación de datos. Solo comparte un enlace y miren juntos.",
   "HERO_MASCOT_ALT": "Un lindo koala de pie mirando hacia abajo a los botones de descarga",
+  "DEMO_SYNC": "Sincronizado",
+  "DEMO_HINT": "Demo en vivo — pulsa play en cualquiera de las pestañas: KoalaSync mantiene ambas sincronizadas.",
+  "DEMO_NO_ROOM": "Aún sin conexión",
+  "DEMO_CREATE_ROOM": "Crear sala",
+  "DEMO_JOINED": "Conectado a la sala",
+  "DEMO_TAB_SELECTED": "Pestaña seleccionada",
   "ADD_TO_CHROME": "Añadir a Chrome",
   "ADD_TO_FIREFOX": "Añadir a Firefox",
   "COMPAT_HEADING": "Funciona en tus plataformas favoritas",
diff --git a/website/locales/fr.json b/website/locales/fr.json
index f24715b..9a316d0 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Regardez ensemble.<span class='hero-line2'>Synchronisation parfaite.</span>",
   "HERO_SUBTITLE": "Votre soirée cinéma à distance sans décalage. Pas d'inscription, pas de collecte de données. Partagez simplement un lien et regardez ensemble.",
   "HERO_MASCOT_ALT": "Un koala mignon debout et regardant vers le bas les boutons de téléchargement",
+  "DEMO_SYNC": "Synchronisé",
+  "DEMO_HINT": "Démo interactive — lancez la lecture dans un onglet : KoalaSync garde les deux synchronisés.",
+  "DEMO_NO_ROOM": "Pas encore connecté",
+  "DEMO_CREATE_ROOM": "Créer un salon",
+  "DEMO_JOINED": "Salon rejoint",
+  "DEMO_TAB_SELECTED": "Onglet sélectionné",
   "ADD_TO_CHROME": "Ajouter à Chrome",
   "ADD_TO_FIREFOX": "Ajouter à Firefox",
   "COMPAT_HEADING": "Fonctionne sur vos plateformes préférées",
diff --git a/website/locales/it.json b/website/locales/it.json
index f98e89c..ac8d658 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Guardate Insieme.<span class='hero-line2'>Sincronia Perfetta.</span>",
   "HERO_SUBTITLE": "La tua serata cinema a distanza senza ritardi. Nessun account, nessun dato raccolto. Condividi un link e guardate insieme.",
   "HERO_MASCOT_ALT": "Un simpatico koala che guarda i pulsanti di download",
+  "DEMO_SYNC": "Sincronizzato",
+  "DEMO_HINT": "Demo dal vivo — premi play in una delle schede: KoalaSync le mantiene sincronizzate.",
+  "DEMO_NO_ROOM": "Non ancora connesso",
+  "DEMO_CREATE_ROOM": "Crea stanza",
+  "DEMO_JOINED": "Entrato nella stanza",
+  "DEMO_TAB_SELECTED": "Scheda selezionata",
   "ADD_TO_CHROME": "Aggiungi a Chrome",
   "ADD_TO_FIREFOX": "Aggiungi a Firefox",
   "COMPAT_HEADING": "Compatibile con le tue piattaforme preferite",
diff --git a/website/locales/ja.json b/website/locales/ja.json
index fdd90a0..3ffd60d 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "一緒に観よう。<span class='hero-line2'>完璧に同期。</span>",
   "HERO_SUBTITLE": "遅延のないリモート映画鑑賞。登録不要、データ収集なし。リンクを共有するだけで、一緒に視聴できます。",
   "HERO_MASCOT_ALT": "ダウンロードボタンを見下ろしているかわいいコアラ",
+  "DEMO_SYNC": "同期中",
+  "DEMO_HINT": "ライブデモ — どちらかのタブで再生すると、KoalaSyncが両方を同期させます。",
+  "DEMO_NO_ROOM": "未接続",
+  "DEMO_CREATE_ROOM": "ルームを作成",
+  "DEMO_JOINED": "ルームに参加",
+  "DEMO_TAB_SELECTED": "タブを選択済み",
   "ADD_TO_CHROME": "Chromeに追加",
   "ADD_TO_FIREFOX": "Firefoxに追加",
   "COMPAT_HEADING": "お気に入りのプラットフォームで動作",
@@ -179,7 +185,7 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSyncは、Netflix、Disney+、Amazon、YouTube、Twitch、またはその他のストリーミングプラットフォームと提携、承認、または関連付けられているものではありません。すべての商標はそれぞれの所有者に帰属します。",
   "FOOTER_SUPPORT": "Support KoalaSync",
-    "ALT_TELEPARTY_TITLE": "KoalaSync vs Teleparty：どちらのウォッチパーティツールを使うべき？",
+  "ALT_TELEPARTY_TITLE": "KoalaSync vs Teleparty：どちらのウォッチパーティツールを使うべき？",
   "ALT_TELEPARTY_META_DESC": "ウォッチパーティ向けツール、KoalaSyncとTelepartyの実践的比較。チャット機能、モバイル対応、ブラウザでの動画同期、セルフホスト型メディアサーバー、オープンソース利用といった観点から解説します。",
   "ALT_TELEPARTY_INTRO": "KoalaSyncとTelepartyは、どちらも「3、2、1、再生！」と声を掛け合う手間をかけずに、一緒に動画を楽しむという共通の課題を解決してくれます。ただ、そのアプローチは異なります。<br><br>チャット機能が組み込まれていることや、モバイル端末で視聴できることを重視するなら、Telepartyが最適です。一方、KoalaSyncは、DiscordやTeamSpeakなどで既に通話しながら、ブラウザ上で動画の再生タイミングだけを同期させたいという、デスクトップブラウザでの利用に適しています。<br><br>私がKoalaSyncを開発した主な理由は「柔軟性」です。特定のプラットフォームだけでなく、一般的なブラウザ用動画プレーヤーを使用するほぼすべてのウェブサイトで動作するように設計されています。これには、Emby、Jellyfin、Plexといったセルフホスト環境や、ローカル/プライベートドメイン、そしてブラウザ上の一般的な動画ページなどが含まれます。",
   "ALT_TELEPARTY_WHEN_TELE_TITLE": "Telepartyが適しているケース",
diff --git a/website/locales/ko.json b/website/locales/ko.json
index f7d144a..662dd1b 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "함께 시청하세요.<span class='hero-line2'>완벽하게 동기화됩니다.</span>",
   "HERO_SUBTITLE": "지연 없는 원격 영화의 밤. 회원가입도, 데이터 수집도 없습니다. 링크를 공유하고 함께 시청하세요.",
   "HERO_MASCOT_ALT": "다운로드 버튼을 내려다보고 서 있는 귀여운 코알라",
+  "DEMO_SYNC": "동기화됨",
+  "DEMO_HINT": "라이브 데모 — 아무 탭에서나 재생을 누르면 KoalaSync가 두 탭을 동기화합니다.",
+  "DEMO_NO_ROOM": "아직 연결되지 않음",
+  "DEMO_CREATE_ROOM": "방 만들기",
+  "DEMO_JOINED": "방 참여됨",
+  "DEMO_TAB_SELECTED": "탭 선택됨",
   "ADD_TO_CHROME": "Chrome에 추가",
   "ADD_TO_FIREFOX": "Firefox에 추가",
   "COMPAT_HEADING": "가장 좋아하는 플랫폼에서 작동합니다",
@@ -179,7 +185,7 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync는 Netflix, Disney+, Amazon, YouTube, Twitch 또는 기타 스트리밍 플랫폼과 제휴, 보증 또는 연관되어 있지 않습니다. 모든 상표는 해당 소유자의 재산입니다.",
   "FOOTER_SUPPORT": "Support KoalaSync",
-    "ALT_TELEPARTY_TITLE": "KoalaSync 대 Teleparty: 어떤 '워치 파티(watch party)' 도구를 선택해야 할까요?",
+  "ALT_TELEPARTY_TITLE": "KoalaSync 대 Teleparty: 어떤 '워치 파티(watch party)' 도구를 선택해야 할까요?",
   "ALT_TELEPARTY_META_DESC": "워치 파티를 위한 KoalaSync와 Teleparty의 실용적 비교: 내장 채팅, 모바일 지원, 브라우저 영상 동기화, 자체 호스팅 미디어 서버 및 오픈 소스 활용 여부 등을 다룹니다.",
   "ALT_TELEPARTY_INTRO": "KoalaSync와 Teleparty는 모두 '3, 2, 1, 재생' 같은 번거로운 절차 없이 함께 영상을 시청할 수 있게 해준다는 점에서 같은 문제를 해결해 줍니다. 다만 접근 방식에는 차이가 있습니다.<br><br>내장 채팅 기능이 필요하거나 모바일에서 시청하고 싶다면 Teleparty가 가장 합리적인 선택입니다. 반면 KoalaSync는 Discord, Teamspeak 또는 기타 음성 통화 서비스를 통해 이미 대화를 나누고 있으면서, 단순히 영상 재생만 동기화하고 싶은 데스크톱 브라우저 기반의 워치 파티에 더 적합합니다.<br><br>제가 KoalaSync를 개발한 주된 이유는 유연성 때문입니다. 특정 플랫폼 목록에만 국한되지 않고, 일반적인 브라우저 비디오 플레이어를 사용하는 거의 모든 웹사이트에서 작동하도록 설계되었습니다. 여기에는 Emby, Jellyfin, Plex와 같은 자체 호스팅 환경, 로컬/비공개 도메인, 그리고 브라우저상의 수많은 일반 동영상 페이지가 포함됩니다.",
   "ALT_TELEPARTY_WHEN_TELE_TITLE": "Teleparty가 여전히 좋은 선택이 될 수 있는 경우",
diff --git a/website/locales/nl.json b/website/locales/nl.json
index e58b85f..7cbf669 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Samen Kijken.<span class='hero-line2'>Perfect Synchroniseren.</span>",
   "HERO_SUBTITLE": "Uw filmavond op afstand zonder vertraging. Geen registratie, geen gegevensverzameling. Deel gewoon een link en kijk samen.",
   "HERO_MASCOT_ALT": "Een schattige koala die staat en naar beneden kijkt naar de downloadknoppen",
+  "DEMO_SYNC": "Synchroon",
+  "DEMO_HINT": "Live demo — druk op play in een van de tabbladen: KoalaSync houdt beide synchroon.",
+  "DEMO_NO_ROOM": "Nog niet verbonden",
+  "DEMO_CREATE_ROOM": "Kamer aanmaken",
+  "DEMO_JOINED": "In de kamer",
+  "DEMO_TAB_SELECTED": "Tabblad geselecteerd",
   "ADD_TO_CHROME": "Toevoegen aan Chrome",
   "ADD_TO_FIREFOX": "Toevoegen aan Firefox",
   "COMPAT_HEADING": "Werkt op uw favoriete platforms",
diff --git a/website/locales/pl.json b/website/locales/pl.json
index 80bf6e0..a43d46c 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Oglądajcie Razem.<span class='hero-line2'>Synchronizujcie Idealnie.</span>",
   "HERO_SUBTITLE": "Twój zdalny wieczór filmowy bez opóźnień. Bez rejestracji, bez zbierania danych. Po prostu udostępnij link i oglądajcie razem.",
   "HERO_MASCOT_ALT": "Uroczy koala stojący i patrzący w dół na przyciski pobierania",
+  "DEMO_SYNC": "Zsynchronizowane",
+  "DEMO_HINT": "Demo na żywo — naciśnij play w dowolnej karcie: KoalaSync utrzyma obie w synchronizacji.",
+  "DEMO_NO_ROOM": "Jeszcze nie połączono",
+  "DEMO_CREATE_ROOM": "Utwórz pokój",
+  "DEMO_JOINED": "Dołączono do pokoju",
+  "DEMO_TAB_SELECTED": "Karta wybrana",
   "ADD_TO_CHROME": "Dodaj do Chrome",
   "ADD_TO_FIREFOX": "Dodaj do Firefox",
   "COMPAT_HEADING": "Działa na Twoich ulubionych platformach",
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index e9b4daf..075c032 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Assistam Juntos.<span class='hero-line2'>Sincronia Perfeita.</span>",
   "HERO_SUBTITLE": "Sua noite de cinema à distância sem atrasos. Sem contas, sem coleta de dados. Apenas compartilhe o link e assistam juntos.",
   "HERO_MASCOT_ALT": "Um coala fofo olhando para os botões de download",
+  "DEMO_SYNC": "Sincronizado",
+  "DEMO_HINT": "Demo ao vivo — dê play em qualquer aba: o KoalaSync mantém as duas em sincronia.",
+  "DEMO_NO_ROOM": "Ainda não conectado",
+  "DEMO_CREATE_ROOM": "Criar sala",
+  "DEMO_JOINED": "Entrou na sala",
+  "DEMO_TAB_SELECTED": "Aba selecionada",
   "ADD_TO_CHROME": "Adicionar ao Chrome",
   "ADD_TO_FIREFOX": "Adicionar ao Firefox",
   "COMPAT_HEADING": "Funciona nas suas plataformas favoritas",
diff --git a/website/locales/pt.json b/website/locales/pt.json
index c127c0e..f3afdf7 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Vejam Juntos.<span class='hero-line2'>Sincronia Perfeita.</span>",
   "HERO_SUBTITLE": "A sua noite de cinema à distância e sem atrasos. Sem contas, sem recolha de dados. Partilhe um link e vejam juntos.",
   "HERO_MASCOT_ALT": "Um coala fofo a olhar para os botões de download",
+  "DEMO_SYNC": "Sincronizado",
+  "DEMO_HINT": "Demo ao vivo — dê play em qualquer aba: o KoalaSync mantém as duas em sincronia.",
+  "DEMO_NO_ROOM": "Ainda não conectado",
+  "DEMO_CREATE_ROOM": "Criar sala",
+  "DEMO_JOINED": "Entrou na sala",
+  "DEMO_TAB_SELECTED": "Separador selecionado",
   "ADD_TO_CHROME": "Adicionar ao Chrome",
   "ADD_TO_FIREFOX": "Adicionar ao Firefox",
   "COMPAT_HEADING": "Funciona nas suas plataformas favoritas",
diff --git a/website/locales/ru.json b/website/locales/ru.json
index 1f59414..5bc8d70 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Смотрите вместе.<span class='hero-line2'>Синхронно на 100%.</span>",
   "HERO_SUBTITLE": "Ваш киновечер на расстоянии без задержек. Без регистрации и сбора данных. Просто поделитесь ссылкой и смотрите вместе.",
   "HERO_MASCOT_ALT": "Милый коала стоит и смотрит вниз на кнопки загрузки",
+  "DEMO_SYNC": "Синхронно",
+  "DEMO_HINT": "Живое демо — нажмите play в любой вкладке: KoalaSync синхронизирует обе.",
+  "DEMO_NO_ROOM": "Ещё не подключено",
+  "DEMO_CREATE_ROOM": "Создать комнату",
+  "DEMO_JOINED": "В комнате",
+  "DEMO_TAB_SELECTED": "Вкладка выбрана",
   "ADD_TO_CHROME": "Установить в Chrome",
   "ADD_TO_FIREFOX": "Установить в Firefox",
   "COMPAT_HEADING": "Работает на ваших любимых платформах",
diff --git a/website/locales/tr.json b/website/locales/tr.json
index e3bf7b5..13ace76 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Birlikte İzleyin.<span class='hero-line2'>Mükemmel Eşitleyin.</span>",
   "HERO_SUBTITLE": "Gecikmesiz uzaktan film geceniz. Kayıt yok, veri toplama yok. Sadece bir bağlantı paylaşın ve birlikte izleyin.",
   "HERO_MASCOT_ALT": "İndirme düğmelerine bakan sevimli bir koala",
+  "DEMO_SYNC": "Senkronize",
+  "DEMO_HINT": "Canlı demo — sekmelerden birinde oynat'a basın: KoalaSync ikisini de senkronize tutar.",
+  "DEMO_NO_ROOM": "Henüz bağlı değil",
+  "DEMO_CREATE_ROOM": "Oda oluştur",
+  "DEMO_JOINED": "Odaya katıldı",
+  "DEMO_TAB_SELECTED": "Sekme seçildi",
   "ADD_TO_CHROME": "Chrome'a Ekle",
   "ADD_TO_FIREFOX": "Firefox'a Ekle",
   "COMPAT_HEADING": "En sevdiğiniz platformlarda çalışır",
diff --git a/website/locales/uk.json b/website/locales/uk.json
index 8c6cf74..2b39483 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "Дивіться разом.<span class='hero-line2'>Ідеальна синхронізація.</span>",
   "HERO_SUBTITLE": "Ваш віддалений кіновечір без лагів. Ні реєстрації, ні збору даних. Просто поділіться посиланням і дивіться разом.",
   "HERO_MASCOT_ALT": "Мила коала стоїть і дивиться вниз на кнопки завантаження",
+  "DEMO_SYNC": "Синхронно",
+  "DEMO_HINT": "Жива демонстрація — натисніть play у будь-якій вкладці: KoalaSync синхронізує обидві.",
+  "DEMO_NO_ROOM": "Ще не підключено",
+  "DEMO_CREATE_ROOM": "Створити кімнату",
+  "DEMO_JOINED": "У кімнаті",
+  "DEMO_TAB_SELECTED": "Вкладку вибрано",
   "ADD_TO_CHROME": "Додати до Chrome",
   "ADD_TO_FIREFOX": "Додати до Firefox",
   "COMPAT_HEADING": "Працює на ваших улюблених платформах",
diff --git a/website/locales/zh.json b/website/locales/zh.json
index d987fd7..21737a5 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -17,6 +17,12 @@
   "HERO_TITLE": "一起观看.<span class='hero-line2'> 完美同步.</span>",
   "HERO_SUBTITLE": "您的远程电影之夜没有延迟。无需注册，无需收集数据。只需分享链接即可一起观看。",
   "HERO_MASCOT_ALT": "一只可爱的考拉站着，低头看着下载按钮",
+  "DEMO_SYNC": "同步中",
+  "DEMO_HINT": "在线演示 — 在任一标签页点击播放：KoalaSync 会让两边保持同步。",
+  "DEMO_NO_ROOM": "尚未连接",
+  "DEMO_CREATE_ROOM": "创建房间",
+  "DEMO_JOINED": "已加入房间",
+  "DEMO_TAB_SELECTED": "已选择标签页",
   "ADD_TO_CHROME": "添加到Chrome",
   "ADD_TO_FIREFOX": "添加到Firefox",
   "COMPAT_HEADING": "适用于您最喜欢的平台",
@@ -179,15 +185,15 @@
   "FOOTER_PRIVACY_LINK": "privacy",
   "FOOTER_DISCLAIMER": "KoalaSync 不隶属于 Netflix、Disney+、Amazon、YouTube、Twitch 或任何其他流媒体平台，也不受其认可或关联。所有商标均为其各自所有者的财产。",
   "FOOTER_SUPPORT": "Support KoalaSync",
-    "ALT_TELEPARTY_TITLE": "KoalaSync 与 Teleparty：你应该选择哪款在线同步观影工具？",
+  "ALT_TELEPARTY_TITLE": "KoalaSync 与 Teleparty：你应该选择哪款在线同步观影工具？",
   "ALT_TELEPARTY_META_DESC": "针对 KoalaSync 和 Teleparty 的实用对比，涵盖内置聊天功能、移动端支持、浏览器视频同步、自建媒体服务器以及开源特性等方面。",
-  "ALT_TELEPARTY_INTRO": "KoalaSync 和 Teleparty 都能解决同一个令人头疼的问题：如何一起观看视频，而无需经历\u201c3、2、1，开始播放\u201d这种繁琐的同步步骤。只不过，它们采取了不同的实现方式。<br><br>如果你需要内置聊天功能或希望在移动设备上观看，Teleparty 是更合理的选择。KoalaSync 则更适合桌面浏览器观影场景——即你已经通过 Discord、TeamSpeak 或其他语音通话软件进行交流，只需确保视频播放保持同步即可。<br><br>我开发 KoalaSync 的主要初衷是为了灵活性。它旨在支持几乎所有使用标准浏览器视频播放器的网站，而不仅仅局限于特定的平台列表。这包括 Emby、Jellyfin 和 Plex 等自建媒体服务，本地/私有域名，以及浏览器中的各类常规视频页面。",
+  "ALT_TELEPARTY_INTRO": "KoalaSync 和 Teleparty 都能解决同一个令人头疼的问题：如何一起观看视频，而无需经历“3、2、1，开始播放”这种繁琐的同步步骤。只不过，它们采取了不同的实现方式。<br><br>如果你需要内置聊天功能或希望在移动设备上观看，Teleparty 是更合理的选择。KoalaSync 则更适合桌面浏览器观影场景——即你已经通过 Discord、TeamSpeak 或其他语音通话软件进行交流，只需确保视频播放保持同步即可。<br><br>我开发 KoalaSync 的主要初衷是为了灵活性。它旨在支持几乎所有使用标准浏览器视频播放器的网站，而不仅仅局限于特定的平台列表。这包括 Emby、Jellyfin 和 Plex 等自建媒体服务，本地/私有域名，以及浏览器中的各类常规视频页面。",
   "ALT_TELEPARTY_WHEN_TELE_TITLE": "Teleparty 依然适用的场景",
   "ALT_TELEPARTY_WHEN_TELE_BODY": "如果你希望聊天功能集成在观影工具本身之中，Teleparty 仍然是更好的选择。KoalaSync 目前没有内置聊天功能；它默认你已经在其他平台（如 Discord、TeamSpeak、WhatsApp、Signal 或常规通话）上进行交流。<br><br>移动端支持是另一个关键因素。Teleparty 拥有专属应用程序，而 KoalaSync 目前仅支持桌面浏览器。如果你想在手机或平板电脑上同步观看 Netflix，KoalaSync 暂时并不适用。<br><br>因此，如果你最看重聊天功能和移动端支持，Teleparty 可能会更适合你的使用需求。",
   "ALT_TELEPARTY_WHEN_KOALA_TITLE": "KoalaSync 适用场景",
-  "ALT_TELEPARTY_WHEN_KOALA_BODY": "如果您想要一款灵活的桌面浏览器同步工具，而不是受限于特定平台列表的软件，那么 KoalaSync 是更合适的选择。<br><br>它适用于几乎所有使用标准浏览器视频播放器的网站。对于 Emby、Jellyfin、Plex、私有媒体服务器、本地域或传统\u201c在线观影派对\u201d工具通常忽略的小型视频网站来说，这一点尤为实用。<br><br>此外，它完全免费且开源，无需注册账号；如果您希望运行自己的中继服务器，还可以选择自托管。我开发它的初衷是寻找一款既注重隐私又能与我自己的 Emby 系统兼容的工具，而不是那种仅针对少数几家大型流媒体平台的封闭式平台。",
+  "ALT_TELEPARTY_WHEN_KOALA_BODY": "如果您想要一款灵活的桌面浏览器同步工具，而不是受限于特定平台列表的软件，那么 KoalaSync 是更合适的选择。<br><br>它适用于几乎所有使用标准浏览器视频播放器的网站。对于 Emby、Jellyfin、Plex、私有媒体服务器、本地域或传统“在线观影派对”工具通常忽略的小型视频网站来说，这一点尤为实用。<br><br>此外，它完全免费且开源，无需注册账号；如果您希望运行自己的中继服务器，还可以选择自托管。我开发它的初衷是寻找一款既注重隐私又能与我自己的 Emby 系统兼容的工具，而不是那种仅针对少数几家大型流媒体平台的封闭式平台。",
   "ALT_TELEPARTY_MAIN_DIFF_TITLE": "主要区别",
-  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty 更侧重于提供包含聊天和移动端支持的\u201c观影派对\u201d体验；而 KoalaSync 则更像是一个针对浏览器视频的灵活同步层。<br><br>这听起来似乎差别不大，但实际上极大地改变了使用场景。如果您需要一个内置聊天功能的完整观影派对应用，Teleparty 是合理的选择；如果您已有语音聊天渠道，仅需保持各浏览器间的视频播放控制同步，那么 KoalaSync 则是更简洁适用的方案。",
+  "ALT_TELEPARTY_MAIN_DIFF_BODY": "Teleparty 更侧重于提供包含聊天和移动端支持的“观影派对”体验；而 KoalaSync 则更像是一个针对浏览器视频的灵活同步层。<br><br>这听起来似乎差别不大，但实际上极大地改变了使用场景。如果您需要一个内置聊天功能的完整观影派对应用，Teleparty 是合理的选择；如果您已有语音聊天渠道，仅需保持各浏览器间的视频播放控制同步，那么 KoalaSync 则是更简洁适用的方案。",
   "ALT_TELEPARTY_LIMITS_TITLE": "局限性说明",
   "ALT_TELEPARTY_LIMITS_BODY": "KoalaSync 并非万能，我们也坦诚其局限性。目前它仅支持桌面端浏览器，没有内置聊天功能，也没有移动端应用。<br><br>兼容性也取决于浏览器和视频播放器。虽然 KoalaSync 理论上支持几乎所有标准浏览器视频播放器，但网站随时可能更改其播放器、DRM（数字版权管理）机制或浏览器限制策略。<br><br>KoalaSync 与 Netflix、Disney+、Prime Video、YouTube、Teleparty、Emby、Jellyfin、Plex 或本文提及的任何其他品牌均无关联。提及这些名称仅为说明典型的使用场景。",
   "ALT_TELEPARTY_SUMMARY_TITLE": "总结",
@@ -196,7 +202,7 @@
   "ALT_SCREEN_META_DESC": "针对远程观影之夜，从播放控制、视频质量、隐私保护、字幕支持及浏览器观看体验等方面，对 KoalaSync 与屏幕共享进行实用对比。",
   "ALT_SCREEN_INTRO": "屏幕共享确实可行，而且老实说，有时这就足够了。一人共享屏幕，其他人观看，搞定。<br><br>但在长时间观影或一起追剧时，它可能会让人感到烦恼。视频质量取决于共享者的上传带宽、CPU、浏览器，以及 Discord、Teamspeak、Zoom 或其他通话应用所采用的压缩算法。此外，实际上只有一个人能控制播放。",
   "ALT_SCREEN_WHEN_ENOUGH_TITLE": "何时使用屏幕共享就足够了",
-  "ALT_SCREEN_WHEN_ENOUGH_BODY": "如果您追求最快的设置速度，屏幕共享是个不错的选择。如果只有一个人能访问该视频……\u201c或者，如果大家都能接受由一个人来控制播放、暂停和进度跳转，那这可能是最简单的方案。<br><br>此外，如果画质要求不高，大家不需要各自独立的字幕或音频设置，且分享者也不介意展示自己的浏览器窗口或屏幕，那么这种方式也很合理。",
+  "ALT_SCREEN_WHEN_ENOUGH_BODY": "如果您追求最快的设置速度，屏幕共享是个不错的选择。如果只有一个人能访问该视频……“或者，如果大家都能接受由一个人来控制播放、暂停和进度跳转，那这可能是最简单的方案。<br><br>此外，如果画质要求不高，大家不需要各自独立的字幕或音频设置，且分享者也不介意展示自己的浏览器窗口或屏幕，那么这种方式也很合理。",
   "ALT_SCREEN_WHEN_ANNOYING_TITLE": "屏幕共享可能带来的不便",
   "ALT_SCREEN_WHEN_ANNOYING_BODY": "最大的弊端在于，并非每个人都在自己的播放器中观看。由一人流式传输屏幕画面，其他人只能观看该画面。<br><br>这意味着视频画质可能较差、音频经过压缩、播放存在延迟，且其他人缺乏控制权。字幕和音轨也完全取决于分享者的选择。<br><br>此外还涉及隐私问题。如果你切换窗口或标签页，其他人可能会短暂看到你的浏览器标签页、电子邮件、Reddit 页面、聊天记录或其他私密内容。虽然可以通过使用独立窗口来规避这一问题，但这仍是需要考虑的因素。",
   "ALT_SCREEN_WHY_CLEANER_TITLE": "为何 KoalaSync 体验更清爽",
@@ -204,6 +210,6 @@
   "ALT_SCREEN_LIMITS_TITLE": "客观存在的局限性",
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync 无法替代语音通话。如果您想在观看的同时进行交流，仍可使用 Discord、Teamspeak、Signal、WhatsApp 或您常用的任何通讯工具。<br><br>此外，每位参与者都需要在各自的设备上访问相应的视频或网页。KoalaSync 无法绕过订阅、登录验证、DRM（数字版权管理）、地域限制或平台规则。<br><br>该工具目前仅支持桌面端浏览器，不包含内置聊天或语音功能；其兼容性取决于具体的浏览器和视频播放器。",
   "ALT_SCREEN_SUMMARY_TITLE": "摘要",
-  "ALT_SCREEN_SUMMARY_BODY": "如果您追求快速便捷，且不太在意画质、隐私或个性化控制，那么屏幕共享是最简单的选择。而当您希望每位参与者都在各自的浏览器中观看，并营造出一种真正\u201c共同观看\u201d的氛围时，KoalaSync 则是更理想的方案。",
+  "ALT_SCREEN_SUMMARY_BODY": "如果您追求快速便捷，且不太在意画质、隐私或个性化控制，那么屏幕共享是最简单的选择。而当您希望每位参与者都在各自的浏览器中观看，并营造出一种真正“共同观看”的氛围时，KoalaSync 则是更理想的方案。",
   "ALT_TRY_KOALASYNC": "试用 KoalaSync"
 }
diff --git a/website/style.css b/website/style.css
index c851830..5f7fce9 100644
--- a/website/style.css
+++ b/website/style.css
@@ -2964,3 +2964,695 @@ header[id] {
     }
 }
 
+/* --- Hero Live Demo Scene (two synced tabs + extension popup) --- */
+.hero-mockup-wrapper {
+    flex-direction: column;
+    gap: 0.9rem;
+    container-type: inline-size;
+}
+
+/* The scene is sized for the two cascading tab cards; opening the popup
+   grows it. (Without JS the popup-open class is set in the markup, so the
+   static fallback always has room for the popup.) */
+.hero-demo-scene {
+    position: relative;
+    width: 100%;
+    height: 370px;
+    height: calc(63cqw + 84px);
+    transition: height 0.45s cubic-bezier(0.22, 1, 0.36, 1);
+}
+
+.hero-demo-scene.popup-open {
+    height: 590px;
+}
+
+/* While initializing, suppress all transitions so the popup can start closed
+   without a visible open->closed animation on page load. */
+.hero-demo-scene.demo-no-anim,
+.hero-demo-scene.demo-no-anim * {
+    transition-duration: 0s !important;
+}
+
+/* Sync status chip: green "in sync" at rest, flashes the broadcast event */
+.demo-sync-chip {
+    position: absolute;
+    top: 0;
+    left: 2px;
+    z-index: 8;
+    display: inline-flex;
+    align-items: center;
+    gap: 7px;
+    padding: 5px 12px;
+    border-radius: 99px;
+    background: rgba(34, 197, 94, 0.12);
+    border: 1px solid rgba(34, 197, 94, 0.35);
+    color: #86efac;
+    font-family: inherit;
+    font-size: 11px;
+    font-weight: 800;
+    letter-spacing: 0.06em;
+    text-transform: uppercase;
+    cursor: default;
+    transition: background 0.3s, border-color 0.3s, color 0.3s;
+}
+
+.demo-chip-dot {
+    width: 8px;
+    height: 8px;
+    border-radius: 50%;
+    background: #22c55e;
+    box-shadow: 0 0 8px #22c55e;
+    transition: background 0.3s, box-shadow 0.3s;
+}
+
+.demo-sync-chip .demo-chip-event { display: none; }
+
+.demo-sync-chip.event {
+    background: rgba(99, 102, 241, 0.14);
+    border-color: rgba(99, 102, 241, 0.45);
+    color: #c7d2fe;
+}
+
+.demo-sync-chip.event .demo-chip-dot {
+    background: #818cf8;
+    box-shadow: 0 0 8px #818cf8;
+}
+
+.demo-sync-chip.event .demo-chip-label-sync { display: none; }
+.demo-sync-chip.event .demo-chip-event { display: inline; }
+
+@keyframes demoBlink {
+    50% { opacity: 0.35; }
+}
+
+/* Video tab cards: a clean window cascade — the right one is in front */
+.demo-tab-card {
+    position: absolute;
+    width: 274px;
+    width: 62cqw;
+    background: #131c31;
+    border: 1px solid rgba(255, 255, 255, 0.09);
+    border-radius: 14px;
+    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.45);
+    overflow: hidden;
+    cursor: pointer;
+    user-select: none;
+    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.25s;
+}
+
+.demo-tab-card:hover,
+.demo-tab-card:focus-visible {
+    border-color: rgba(99, 102, 241, 0.55);
+}
+
+/* Card A = the foreground window at the top right ("your" browser,
+   hosts the extension icon in its toolbar) */
+.demo-tab-a {
+    top: 30px;
+    right: 0;
+    transform: rotate(1.2deg);
+    transform-origin: top right;
+    z-index: 3;
+}
+
+/* Card B = the friend's window, lower left, tucked behind */
+.demo-tab-b {
+    top: 168px;
+    top: calc(28cqw + 44px);
+    left: 0;
+    transform: rotate(-1.5deg);
+    transform-origin: top left;
+    z-index: 2;
+}
+
+/* When the popup slides in from the right edge, the tabs step aside */
+.hero-demo-scene.popup-open .demo-tab-a {
+    transform: rotate(1deg) translate(-55%, 2%) scale(0.9);
+}
+
+.hero-demo-scene.popup-open .demo-tab-b {
+    transform: rotate(-1.5deg) scale(0.95);
+}
+
+.demo-tab-titlebar {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    padding: 6px 8px 6px 10px;
+    background: #0b1222;
+    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
+    font-size: 10.5px;
+    color: var(--text-muted);
+    font-weight: 600;
+}
+
+.demo-tab-dots {
+    display: flex;
+    gap: 4px;
+    flex-shrink: 0;
+}
+
+.demo-tab-dots i {
+    display: block;
+    width: 7px;
+    height: 7px;
+    border-radius: 50%;
+    background: #334155;
+}
+
+.demo-tab-title {
+    display: flex;
+    align-items: center;
+    gap: 5px;
+    flex: 1;
+    min-width: 0;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
+.demo-tab-title svg { flex-shrink: 0; }
+
+.demo-tab-user {
+    flex-shrink: 0;
+    font-size: 9.5px;
+    font-weight: 700;
+    padding: 2px 7px;
+    border-radius: 99px;
+}
+
+.demo-user-a {
+    color: #a5b4fc;
+    background: rgba(99, 102, 241, 0.15);
+}
+
+.demo-user-b {
+    color: #86efac;
+    background: rgba(34, 197, 94, 0.12);
+}
+
+/* Extension launcher pinned in the foreground window's toolbar */
+.demo-ext-launcher {
+    position: relative;
+    flex-shrink: 0;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 24px;
+    height: 24px;
+    padding: 0;
+    border-radius: 7px;
+    background: #273449;
+    border: 1px solid rgba(255, 255, 255, 0.12);
+    cursor: pointer;
+    transition: border-color 0.25s, box-shadow 0.25s, transform 0.15s;
+}
+
+.demo-ext-launcher img {
+    display: block;
+    width: 16px;
+    height: 16px;
+    border-radius: 4px;
+}
+
+.demo-ext-launcher:hover {
+    border-color: var(--accent);
+    transform: translateY(-1px);
+}
+
+.demo-ext-launcher:active {
+    transform: scale(0.94);
+}
+
+.hero-demo-scene.popup-open .demo-ext-launcher {
+    border-color: rgba(99, 102, 241, 0.7);
+    box-shadow: 0 0 10px rgba(99, 102, 241, 0.45);
+}
+
+.demo-ext-launcher::after {
+    content: '';
+    position: absolute;
+    top: -3px;
+    right: -3px;
+    width: 8px;
+    height: 8px;
+    border-radius: 50%;
+    background: #6366f1;
+    box-shadow: 0 0 8px #6366f1;
+    opacity: 0;
+    transition: opacity 0.3s;
+}
+
+.hero-demo-scene:not(.popup-open) .demo-ext-launcher::after {
+    opacity: 1;
+    animation: demoBlink 1.4s ease-in-out infinite;
+}
+
+/* Abstract "video" artwork with a slow cinematic pan/zoom while playing */
+.demo-video {
+    position: relative;
+    aspect-ratio: 16 / 9;
+    background: #020617;
+    overflow: hidden;
+}
+
+.demo-video-art {
+    position: absolute;
+    inset: 0;
+    background:
+        radial-gradient(circle at 78% 22%, rgba(248, 250, 252, 0.28) 0 4%, transparent 5.5%),
+        radial-gradient(120% 90% at 70% 115%, #312e81 0%, transparent 60%),
+        radial-gradient(100% 80% at 12% 112%, #1e1b4b 0%, transparent 55%),
+        linear-gradient(160deg, #1e293b 0%, #0b1024 55%, #020617 100%);
+    transform-origin: 60% 40%;
+    animation:
+        demoKenBurns 9s ease-in-out infinite alternate,
+        demoArtShift 7s ease-in-out infinite alternate;
+    animation-play-state: paused;
+}
+
+/* Soft light drifting through the scene */
+.demo-video-art::before {
+    content: '';
+    position: absolute;
+    top: -25%;
+    left: -12%;
+    width: 70%;
+    aspect-ratio: 1;
+    border-radius: 50%;
+    background: radial-gradient(circle, rgba(129, 140, 248, 0.32), transparent 65%);
+    animation: demoGlowDrift 7s ease-in-out infinite alternate;
+    animation-play-state: paused;
+}
+
+.demo-video-art::after {
+    content: '';
+    position: absolute;
+    inset: 0;
+    background: linear-gradient(105deg, transparent 30%, rgba(129, 140, 248, 0.14) 45%, rgba(56, 189, 248, 0.1) 55%, transparent 70%);
+    transform: translateX(-100%);
+    animation: demoSheen 2.8s linear infinite;
+    animation-play-state: paused;
+}
+
+/* Playing runs the animations; pausing freezes them mid-frame, so a synced
+   pause is visible at a glance */
+.demo-tab-card.playing .demo-video-art,
+.demo-tab-card.playing .demo-video-art::before,
+.demo-tab-card.playing .demo-video-art::after {
+    animation-play-state: running;
+}
+
+@keyframes demoKenBurns {
+    from { transform: scale(1) translate(0, 0); }
+    to { transform: scale(1.18) translate(-3%, 2%); }
+}
+
+@keyframes demoArtShift {
+    from { filter: hue-rotate(0deg) brightness(1); }
+    to { filter: hue-rotate(40deg) brightness(1.15); }
+}
+
+@keyframes demoGlowDrift {
+    from { transform: translate(0, 0); }
+    to { transform: translate(65%, 30%); }
+}
+
+@keyframes demoSheen {
+    to { transform: translateX(100%); }
+}
+
+/* Play / pause overlay */
+.demo-play-overlay {
+    position: absolute;
+    inset: 0;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    background: rgba(2, 6, 23, 0.35);
+    transition: opacity 0.25s, background 0.25s;
+}
+
+.demo-icon-wrap {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 46px;
+    height: 46px;
+    border-radius: 50%;
+    background: rgba(15, 23, 42, 0.75);
+    border: 1px solid rgba(255, 255, 255, 0.25);
+    color: white;
+    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.5);
+    backdrop-filter: blur(4px);
+    transition: transform 0.2s;
+}
+
+.demo-tab-card:hover .demo-icon-wrap { transform: scale(1.1); }
+
+.demo-play-overlay .icon-pause { display: none; }
+.demo-tab-card.playing .icon-play { display: none; }
+.demo-tab-card.playing .icon-pause { display: block; }
+
+.demo-tab-card.playing .demo-play-overlay {
+    opacity: 0;
+    background: transparent;
+}
+
+.demo-tab-card.playing:hover .demo-play-overlay,
+.demo-tab-card.playing:focus-visible .demo-play-overlay {
+    opacity: 1;
+}
+
+/* Timestamp + seekable progress bar */
+.demo-video-controls {
+    position: absolute;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    padding: 14px 10px 8px;
+    background: linear-gradient(transparent, rgba(2, 6, 23, 0.85));
+    font-size: 9.5px;
+    color: #e2e8f0;
+    z-index: 1;
+}
+
+.demo-time {
+    flex-shrink: 0;
+    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
+    font-weight: 700;
+    letter-spacing: 0.03em;
+    font-variant-numeric: tabular-nums;
+}
+
+.demo-progress {
+    position: relative;
+    flex: 1;
+    height: 5px;
+    border-radius: 99px;
+    background: rgba(255, 255, 255, 0.18);
+    cursor: pointer;
+}
+
+/* Generous invisible hit area for seeking */
+.demo-progress::before {
+    content: '';
+    position: absolute;
+    inset: -8px 0;
+}
+
+.demo-progress-fill {
+    position: relative;
+    height: 100%;
+    width: 30%;
+    border-radius: 99px;
+    background: linear-gradient(90deg, #6366f1, #a855f7);
+    pointer-events: none;
+}
+
+/* Scrub thumb, revealed on hover */
+.demo-progress-fill::after {
+    content: '';
+    position: absolute;
+    right: -5px;
+    top: 50%;
+    width: 11px;
+    height: 11px;
+    margin-top: -5.5px;
+    border-radius: 50%;
+    background: #e2e8f0;
+    box-shadow: 0 0 6px rgba(99, 102, 241, 0.8);
+    opacity: 0;
+    transform: scale(0.6);
+    transition: opacity 0.2s, transform 0.2s;
+}
+
+.demo-tab-card:hover .demo-progress-fill::after {
+    opacity: 1;
+    transform: scale(1);
+}
+
+/* Sync pulse ring on both cards */
+.demo-tab-card.sync-pulse {
+    animation: demoCardPulse 0.9s ease-out;
+}
+
+@keyframes demoCardPulse {
+    0% { box-shadow: 0 18px 36px rgba(0, 0, 0, 0.45), 0 0 0 0 rgba(99, 102, 241, 0.65); }
+    100% { box-shadow: 0 18px 36px rgba(0, 0, 0, 0.45), 0 0 0 22px rgba(99, 102, 241, 0); }
+}
+
+/* The existing popup mockup slides in at the right edge, dropping out of
+   the toolbar icon of the foreground window */
+.hero-demo-scene .extension-mockup {
+    position: absolute;
+    top: 64px;
+    right: 0;
+    z-index: 5;
+    width: 292px;
+    width: min(320px, 66cqw);
+    margin: 0;
+    transform-origin: top right;
+    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.35s, visibility 0.45s;
+}
+
+.hero-demo-scene:not(.popup-open) .extension-mockup {
+    transform: translate(2%, -3%) scale(0.5);
+    opacity: 0;
+    visibility: hidden;
+    pointer-events: none;
+}
+
+/* Ghost cursor for the automated walkthrough */
+.demo-cursor {
+    position: absolute;
+    top: 52%;
+    left: 46%;
+    z-index: 20;
+    width: 22px;
+    height: 22px;
+    opacity: 0;
+    pointer-events: none;
+    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.6));
+    transition: top 0.65s cubic-bezier(0.45, 0.05, 0.25, 1), left 0.65s cubic-bezier(0.45, 0.05, 0.25, 1), opacity 0.35s;
+}
+
+.demo-cursor.visible { opacity: 1; }
+
+.demo-cursor svg {
+    display: block;
+    width: 100%;
+    height: 100%;
+}
+
+.demo-cursor::before {
+    content: '';
+    position: absolute;
+    top: -6px;
+    left: -8px;
+    width: 32px;
+    height: 32px;
+    border-radius: 50%;
+    border: 2px solid #818cf8;
+    opacity: 0;
+    transform: scale(0.35);
+}
+
+.demo-cursor.clicking::before {
+    animation: demoClickRipple 0.45s ease-out;
+}
+
+@keyframes demoClickRipple {
+    0% { opacity: 0.9; transform: scale(0.35); }
+    100% { opacity: 0; transform: scale(1.25); }
+}
+
+/* Caption below the scene */
+.demo-hint {
+    margin: 0;
+    text-align: center;
+    font-size: 0.82rem;
+    color: var(--text-muted);
+    opacity: 0;
+    transition: opacity 0.6s;
+}
+
+.demo-hint.show { opacity: 0.75; }
+
+/* Mobile: fall back to the classic static popup mockup */
+@media (max-width: 768px) {
+    .hero-demo-scene,
+    .hero-demo-scene.popup-open {
+        height: auto;
+        max-width: 320px;
+        margin: 0 auto;
+    }
+
+    .demo-tab-card,
+    .demo-sync-chip,
+    .demo-cursor,
+    .demo-hint {
+        display: none !important;
+    }
+
+    .hero-demo-scene .extension-mockup,
+    .hero-demo-scene:not(.popup-open) .extension-mockup {
+        position: static;
+        width: 100%;
+        transform: none;
+        opacity: 1;
+        visibility: visible;
+        pointer-events: auto;
+    }
+}
+
+@media (prefers-reduced-motion: reduce) {
+    .hero-demo-scene:not(.popup-open) .demo-ext-launcher::after {
+        animation: none;
+    }
+}
+
+/* --- Story walkthrough additions: room creation, invite flight, film --- */
+
+/* The stick-figure film carries the motion now — keep only the color drift
+   on the backdrop (the animation shorthand resets play-state, so re-pause) */
+.demo-video-art {
+    animation: demoArtShift 7s ease-in-out infinite alternate;
+    animation-play-state: paused;
+}
+
+/* Tiny abstract "movie": a walker strolls across, a ball bounces ahead.
+   Pausing freezes every element mid-frame — on both tabs at once. */
+.demo-film {
+    position: absolute;
+    inset: 0;
+    width: 100%;
+    height: 100%;
+}
+
+.film-limb {
+    stroke: #e2e8f0;
+    stroke-width: 2;
+    stroke-linecap: round;
+}
+
+.film-walker {
+    transform: translate(-15px, 74px);
+    animation: filmWalk 10s linear infinite;
+}
+
+@keyframes filmWalk {
+    to { transform: translate(175px, 74px); }
+}
+
+.film-bob {
+    animation: filmBob 0.5s ease-in-out infinite alternate;
+}
+
+@keyframes filmBob {
+    to { transform: translateY(-1.8px); }
+}
+
+.film-swing-1,
+.film-swing-2 {
+    transform-box: fill-box;
+    transform-origin: top center;
+}
+
+.film-swing-1 { animation: filmSwing 0.5s ease-in-out infinite alternate; }
+.film-swing-2 { animation: filmSwing 0.5s ease-in-out infinite alternate-reverse; }
+
+@keyframes filmSwing {
+    from { transform: rotate(30deg); }
+    to { transform: rotate(-30deg); }
+}
+
+.film-ball-x {
+    animation: filmBallX 6.5s linear infinite;
+}
+
+@keyframes filmBallX {
+    to { transform: translateX(175px); }
+}
+
+.film-ball {
+    animation: filmBallY 0.55s cubic-bezier(0.4, 0, 0.6, 1) infinite alternate;
+}
+
+@keyframes filmBallY {
+    to { transform: translateY(-16px); }
+}
+
+.demo-film * { animation-play-state: paused; }
+.demo-tab-card.playing .demo-film * { animation-play-state: running; }
+
+/* The sync chip only appears once the room is connected (story progression) */
+.demo-sync-chip {
+    opacity: 0;
+    transform: translateY(-4px);
+    pointer-events: none;
+    transition: background 0.3s, border-color 0.3s, color 0.3s, opacity 0.4s, transform 0.4s;
+}
+
+.hero-demo-scene.connected .demo-sync-chip {
+    opacity: 1;
+    transform: none;
+    pointer-events: auto;
+}
+
+/* Toast on the friend's window ("Room joined", "Tab selected") */
+.demo-tab-toast {
+    position: absolute;
+    top: 36px;
+    left: 50%;
+    transform: translate(-50%, -6px);
+    z-index: 2;
+    padding: 4px 10px;
+    border-radius: 99px;
+    background: rgba(15, 23, 42, 0.92);
+    border: 1px solid rgba(99, 102, 241, 0.5);
+    color: #c7d2fe;
+    font-size: 9.5px;
+    font-weight: 700;
+    white-space: nowrap;
+    opacity: 0;
+    pointer-events: none;
+    transition: opacity 0.3s, transform 0.3s;
+}
+
+.demo-tab-toast.show {
+    opacity: 1;
+    transform: translate(-50%, 0);
+}
+
+/* Invite link pill flying from the popup to the friend's window */
+.demo-invite-fly {
+    position: absolute;
+    z-index: 30;
+    display: inline-flex;
+    align-items: center;
+    gap: 5px;
+    padding: 4px 10px;
+    border-radius: 99px;
+    background: var(--accent);
+    color: white;
+    font-size: 9.5px;
+    font-weight: 700;
+    white-space: nowrap;
+    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.5);
+    opacity: 0;
+    pointer-events: none;
+    transition: left 0.75s cubic-bezier(0.3, 0.7, 0.4, 1), top 0.75s cubic-bezier(0.3, 0.7, 0.4, 1), opacity 0.3s;
+}
+
+/* Attention flash (e.g. on the video select while "choosing the tab") */
+.demo-attn {
+    animation: demoAttn 0.7s ease-in-out 2;
+}
+
+@keyframes demoAttn {
+    50% { box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.75); }
+}
diff --git a/website/template.html b/website/template.html
index 4eda357..34ae4b7 100644
--- a/website/template.html
+++ b/website/template.html
@@ -301,8 +301,91 @@
                 </div>
             </div>
 
-            <!-- Interactive CSS Extension Mockup -->
+            <!-- Interactive Live Demo: two synced video tabs + the extension popup -->
             <div class="hero-mockup-wrapper" data-reveal>
+                <div class="hero-demo-scene popup-open connected" id="hero-demo">
+                    <button class="demo-sync-chip" id="demo-sync-chip" type="button" title="Live sync status of the two demo tabs">
+                        <span class="demo-chip-dot" aria-hidden="true"></span>
+                        <span class="demo-chip-label-sync">{{DEMO_SYNC}}</span>
+                        <span class="demo-chip-event"></span>
+                    </button>
+
+                    <div class="demo-tab-card demo-tab-a" id="demo-tab-a" role="button" tabindex="0" aria-pressed="false" aria-label="Press play or pause as CoolUsername — KoalaSync mirrors it to the other tab" title="Press play/pause here — KoalaSync mirrors it to the other tab">
+                        <div class="demo-tab-titlebar">
+                            <span class="demo-tab-dots" aria-hidden="true"><i></i><i></i><i></i></span>
+                            <span class="demo-tab-title"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="11" height="11" aria-hidden="true"><rect x="2" y="3" width="20" height="14" rx="2"/><path d="M8 21h8M12 17v4"/></svg> Stranger Things - S4E1</span>
+                            <span class="demo-tab-user demo-user-a">CoolUsername</span>
+                            <button class="demo-ext-launcher" id="demo-launcher" type="button" aria-expanded="true" title="Open or close the KoalaSync popup">
+                                <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="" width="16" height="16" loading="eager" decoding="async">
+                            </button>
+                        </div>
+                        <div class="demo-video">
+                            <div class="demo-video-art" aria-hidden="true"></div>
+                            <svg class="demo-film" viewBox="0 0 160 90" preserveAspectRatio="xMidYMax slice" aria-hidden="true" xmlns="http://www.w3.org/2000/svg">
+                                <ellipse cx="34" cy="98" rx="60" ry="20" fill="rgba(30,27,75,0.6)"/>
+                                <ellipse cx="128" cy="102" rx="75" ry="24" fill="rgba(49,46,129,0.4)"/>
+                                <g class="film-ball-x"><circle class="film-ball" cx="0" cy="74" r="3.2" fill="#a5b4fc"/></g>
+                                <g class="film-walker">
+                                    <g class="film-bob">
+                                        <circle cx="0" cy="-23" r="4.2" fill="#e2e8f0"/>
+                                        <line x1="0" y1="-19" x2="0" y2="-8" class="film-limb"/>
+                                        <line x1="0" y1="-16.5" x2="0" y2="-8.5" class="film-limb film-swing-1"/>
+                                        <line x1="0" y1="-16.5" x2="0" y2="-8.5" class="film-limb film-swing-2"/>
+                                        <line x1="0" y1="-8" x2="0" y2="3" class="film-limb film-swing-1"/>
+                                        <line x1="0" y1="-8" x2="0" y2="3" class="film-limb film-swing-2"/>
+                                    </g>
+                                </g>
+                            </svg>
+                            <div class="demo-play-overlay" aria-hidden="true">
+                                <span class="demo-icon-wrap">
+                                    <svg class="icon-play" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="18" height="18"><path d="M8 5v14l11-7z"/></svg>
+                                    <svg class="icon-pause" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="18" height="18"><path d="M6 5h4v14H6zM14 5h4v14h-4z"/></svg>
+                                </span>
+                            </div>
+                            <div class="demo-video-controls">
+                                <span class="demo-time">12:34</span>
+                                <div class="demo-progress" title="Seek — KoalaSync jumps the other tab to the same spot"><div class="demo-progress-fill"></div></div>
+                            </div>
+                        </div>
+                    </div>
+
+                    <div class="demo-tab-card demo-tab-b" id="demo-tab-b" role="button" tabindex="0" aria-pressed="false" aria-label="Press play or pause as KoalaPC — KoalaSync mirrors it to the other tab" title="Press play/pause here — KoalaSync mirrors it to the other tab">
+                        <div class="demo-tab-titlebar">
+                            <span class="demo-tab-dots" aria-hidden="true"><i></i><i></i><i></i></span>
+                            <span class="demo-tab-title"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="11" height="11" aria-hidden="true"><rect x="2" y="3" width="20" height="14" rx="2"/><path d="M8 21h8M12 17v4"/></svg> Stranger Things - S4E1</span>
+                            <span class="demo-tab-user demo-user-b">KoalaPC</span>
+                        </div>
+                        <div class="demo-video">
+                            <div class="demo-video-art" aria-hidden="true"></div>
+                            <svg class="demo-film" viewBox="0 0 160 90" preserveAspectRatio="xMidYMax slice" aria-hidden="true" xmlns="http://www.w3.org/2000/svg">
+                                <ellipse cx="34" cy="98" rx="60" ry="20" fill="rgba(30,27,75,0.6)"/>
+                                <ellipse cx="128" cy="102" rx="75" ry="24" fill="rgba(49,46,129,0.4)"/>
+                                <g class="film-ball-x"><circle class="film-ball" cx="0" cy="74" r="3.2" fill="#a5b4fc"/></g>
+                                <g class="film-walker">
+                                    <g class="film-bob">
+                                        <circle cx="0" cy="-23" r="4.2" fill="#e2e8f0"/>
+                                        <line x1="0" y1="-19" x2="0" y2="-8" class="film-limb"/>
+                                        <line x1="0" y1="-16.5" x2="0" y2="-8.5" class="film-limb film-swing-1"/>
+                                        <line x1="0" y1="-16.5" x2="0" y2="-8.5" class="film-limb film-swing-2"/>
+                                        <line x1="0" y1="-8" x2="0" y2="3" class="film-limb film-swing-1"/>
+                                        <line x1="0" y1="-8" x2="0" y2="3" class="film-limb film-swing-2"/>
+                                    </g>
+                                </g>
+                            </svg>
+                            <div class="demo-play-overlay" aria-hidden="true">
+                                <span class="demo-icon-wrap">
+                                    <svg class="icon-play" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="18" height="18"><path d="M8 5v14l11-7z"/></svg>
+                                    <svg class="icon-pause" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="18" height="18"><path d="M6 5h4v14H6zM14 5h4v14h-4z"/></svg>
+                                </span>
+                            </div>
+                            <div class="demo-video-controls">
+                                <span class="demo-time">12:34</span>
+                                <div class="demo-progress" title="Seek — KoalaSync jumps the other tab to the same spot"><div class="demo-progress-fill"></div></div>
+                            </div>
+                        </div>
+                        <div class="demo-tab-toast" id="demo-toast-b" data-joined="{{DEMO_JOINED}}" data-selected="{{DEMO_TAB_SELECTED}}" aria-hidden="true"></div>
+                    </div>
+
                 <div class="extension-mockup">
                     <div class="mock-header-row">
                         <div class="mock-header-title"><img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo">KoalaSync</div>
@@ -320,6 +403,13 @@
                     <div class="mock-body">
                         <!-- ROOM TAB -->
                         <div id="mock-room" class="mock-screen active">
+                            <!-- Pre-room state, shown only during the scripted walkthrough -->
+                            <div id="demo-room-empty" style="display: none; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding: 34px 10px; text-align: center;">
+                                <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="" width="42" height="42" style="border-radius: 10px; opacity: 0.85;" loading="eager" decoding="async">
+                                <div style="font-size: 0.8rem; color: var(--text-muted); font-weight: 600;">{{DEMO_NO_ROOM}}</div>
+                                <button id="demo-create-room" class="mock-btn" type="button" style="background: var(--accent); border: none; color: white; font-weight: 700; padding: 10px 18px; border-radius: 10px; cursor: pointer;">{{DEMO_CREATE_ROOM}}</button>
+                            </div>
+                            <div id="demo-room-joined">
                             <div class="mock-joined-room" style="display: flex; justify-content: space-between; align-items: center; border-left: 4px solid var(--accent); padding: 8px 10px; background: var(--card); border-radius: 8px; margin-bottom: 12px;" title="The room you are currently connected to">
                                 <div style="display: flex; flex-direction: column;">
                                     <span style="font-size: 0.6rem; text-transform: uppercase; color: var(--text-muted); font-weight: 700; line-height: 1;">{{MOCK_01}}</span>
@@ -331,7 +421,7 @@
                                     <div class="mock-label" title="Share this link with friends so they can join">{{MOCK_03}}</div>
                                 <div class="mock-invite-box">
                                     <input type="text" class="mock-input" value="https://sync.koalastuff.net/join#join:brave-eagle-80:pass" readonly style="flex: 1;" aria-label="Invite link">
-                                    <button class="mock-btn" style="width: 40px; padding: 0.45rem 0; flex-shrink: 0; background: #334155;" title="Copy Invite Link"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="14" height="14" aria-hidden="true"><rect x="9" y="9" width="13" height="13" rx="2" ry="2"/><path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/></svg></button>
+                                    <button class="mock-btn" id="demo-invite-copy" style="width: 40px; padding: 0.45rem 0; flex-shrink: 0; background: #334155;" title="Copy Invite Link"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="14" height="14" aria-hidden="true"><rect x="9" y="9" width="13" height="13" rx="2" ry="2"/><path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/></svg></button>
                                 </div>
                             </div>
                             <div class="mock-card" style="margin-bottom: 12px;">
@@ -345,7 +435,7 @@
                                         <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</div>
                                             <div class="mock-peer-status"><span style="color:#22c55e;">●</span> 0:55 • {{MOCK_06}}</div>
                                     </div>
-                                    <div class="mock-peer-item">
+                                    <div class="mock-peer-item demo-peer-b">
                                         <div class="mock-peer-header">
                                             <span class="mock-peer-name">KoalaPC</span>
                                                 <span class="mock-peer-meta">{{MOCK_07}}</span>
@@ -356,6 +446,7 @@
                                 </div>
                             </div>
                                 <button class="mock-btn" style="background:#ef4444; width:100%; border: none; padding: 10px; border-radius: 8px; color: white; font-weight: 700; cursor: pointer; border: 1px solid #ef4444;">{{MOCK_08}}</button>
+                            </div>
                         </div>
 
                         <!-- SYNC TAB -->
@@ -364,7 +455,7 @@
                                 <label class="mock-section-label" title="Choose the browser tab containing the video to sync">
                                     {{MOCK_09}}
                                 </label>
-                                <select class="mock-input" style="width: 100%; box-sizing: border-box; background: var(--card); border: 1px solid #334155; color: white; padding: 8px; border-radius: 8px; font-family: inherit; font-size: 0.75rem; outline: none; cursor: default;">
+                                <select class="mock-input" id="demo-video-select" style="width: 100%; box-sizing: border-box; background: var(--card); border: 1px solid #334155; color: white; padding: 8px; border-radius: 8px; font-family: inherit; font-size: 0.75rem; outline: none; cursor: default;">
                                     <option><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</option>
                                 </select>
                             </div>
@@ -379,12 +470,12 @@
                                 </button>
                             </div>
                             <div style="display: flex; gap: 8px; margin-bottom: 12px;">
-                                    <button class="mock-btn mock-btn-play" style="flex: 1; background: #22c55e; color: white; padding: 8px; border-radius: 8px; font-weight: 700; border: none; cursor: pointer;" title="Send a Play command to everyone">{{MOCK_11}}</button>
-                                    <button class="mock-btn mock-btn-pause" style="flex: 1; background: #ef4444; color: white; padding: 8px; border-radius: 8px; font-weight: 700; border: none; cursor: pointer;" title="Send a Pause command to everyone">{{MOCK_12}}</button>
+                                    <button class="mock-btn mock-btn-play" id="demo-play-btn" style="flex: 1; background: #22c55e; color: white; padding: 8px; border-radius: 8px; font-weight: 700; border: none; cursor: pointer;" title="Send a Play command to everyone">{{MOCK_11}}</button>
+                                    <button class="mock-btn mock-btn-pause" id="demo-pause-btn" style="flex: 1; background: #ef4444; color: white; padding: 8px; border-radius: 8px; font-weight: 700; border: none; cursor: pointer;" title="Send a Pause command to everyone">{{MOCK_12}}</button>
                             </div>
                             
                             <div style="display: flex; gap: 8px; margin-bottom: 15px; align-items: stretch;">
-                                <button class="mock-btn" style="background: linear-gradient(135deg, #6366f1, #a855f7); flex: 1; color: white; border: none; font-weight: 700; border-radius: 8px; padding: 8px; cursor: pointer;" title="Force all users to sync up">
+                                <button class="mock-btn" id="demo-force-sync" style="background: linear-gradient(135deg, #6366f1, #a855f7); flex: 1; color: white; border: none; font-weight: 700; border-radius: 8px; padding: 8px; cursor: pointer;" title="Force all users to sync up">
                                     {{MOCK_13}}
                                 </button>
                                 <div class="mock-input" style="flex: 1; background: var(--card); border: 1px solid #334155; color: white; padding: 6px; border-radius: 8px; font-size: 0.75rem; display: flex; align-items: center; justify-content: space-between;" title="Choose sync target">
@@ -441,7 +532,7 @@
                                         <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</div>
                                             <div class="mock-peer-status"><span style="color:#22c55e;">●</span> 0:55 • {{MOCK_06}}</div>
                                     </div>
-                                    <div class="mock-peer-item">
+                                    <div class="mock-peer-item demo-peer-b">
                                         <div class="mock-peer-header">
                                             <span class="mock-peer-name">KoalaPC</span>
                                                 <span class="mock-peer-meta">{{MOCK_07}}</span>
@@ -576,6 +667,16 @@
                         </div>
                     </div>
                 </div>
+
+                    <div class="demo-invite-fly" id="demo-invite-fly" aria-hidden="true">
+                        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round" width="11" height="11" aria-hidden="true"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"/><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"/></svg>
+                        sync.koalastuff.net/join…
+                    </div>
+                    <div class="demo-cursor" id="demo-cursor" aria-hidden="true">
+                        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M5 2l13 11.5-6 .7 3.4 6.3-2.6 1.4-3.4-6.4L5 19.5z" fill="#f8fafc" stroke="#0f172a" stroke-width="1.4" stroke-linejoin="round"/></svg>
+                    </div>
+                </div>
+                <p class="demo-hint" id="demo-hint">{{DEMO_HINT}}</p>
             </div>
         </div>
     </header>

From 573847486bc34f00f5c5464e4aaa1be4a452f8af Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 10:42:09 +0200
Subject: [PATCH 128/151] fix: hero CTAs invisible until scroll, seek animation
 skip, layout overhaul
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Remove data-reveal from hero h1/subtitle/mascot/cta-group/version-badge
  (critical above-fold content must never start hidden)
- Change IntersectionObserver rootMargin -150px to -30px, threshold 0.1 to 0.05
  (CTAs at ~530px were past the observer zone on laptops)
- Hero layout: align-items flex-start + padding-top 7.5rem for content at top
- Cards 62cqw to 70cqw, -3% offsets for dramatic overlap cascade
- Film animation: replace stick-figure walker with cinematic night scene
  (7 twinkling stars, glowing moon with drift, parallax mountains, firefly)
- Seek now restarts all film child animations via .demo-reset class toggle
  (was incorrectly resetting parent only — no visible jump)
- Add .demo-seek-sweep overlay + brightness flash during seek
- Video select: placeholder option ('Choose a video tab...') until story picks
- RATE 8 to 1 for realtime playback
- Version badge moved below download buttons
- All 15 locale files: add DEMO_SELECT_PLACEHOLDER key
---
 website/app.js             |  31 +++++-
 website/locales/de.json    |   1 +
 website/locales/en.json    |   1 +
 website/locales/es.json    |   1 +
 website/locales/fr.json    |   1 +
 website/locales/it.json    |   1 +
 website/locales/ja.json    |   1 +
 website/locales/ko.json    |   1 +
 website/locales/nl.json    |   1 +
 website/locales/pl.json    |   1 +
 website/locales/pt-BR.json |   1 +
 website/locales/pt.json    |   1 +
 website/locales/ru.json    |   1 +
 website/locales/tr.json    |   1 +
 website/locales/uk.json    |   1 +
 website/locales/zh.json    |   1 +
 website/style.css          | 193 ++++++++++++++++++++++++++-----------
 website/template.html      |  75 +++++++-------
 18 files changed, 219 insertions(+), 95 deletions(-)

diff --git a/website/app.js b/website/app.js
index 36b2921..bd47b58 100644
--- a/website/app.js
+++ b/website/app.js
@@ -29,8 +29,8 @@ document.addEventListener('DOMContentLoaded', () => {
                 }
             });
         }, {
-            rootMargin: '0px 0px -150px 0px',
-            threshold: 0.1
+            rootMargin: '0px 0px -30px 0px',
+            threshold: 0.05
         });
 
         revealElements.forEach(el => revealObserver.observe(el));
@@ -433,7 +433,7 @@ document.addEventListener('DOMContentLoaded', () => {
         if (!launcher || !chip || !cursor || !playBtn || !pauseBtn) return;
 
         const EP_LEN = 2537;   // fake 42:17 episode
-        const RATE = 8;        // timelapse factor so the demo feels alive
+        const RATE = 1;        // realtime: 1 wall-clock second = 1 video second
         const START_T = 754;   // 12:34
 
         const tabs = {};
@@ -548,14 +548,35 @@ document.addEventListener('DOMContentLoaded', () => {
             tabs[sourceKey].t = fraction * EP_LEN;
             renderTab(tabs[sourceKey]);
             showEvent('» ' + NAMES[sourceKey]);
+            // visible "cut" so the jump reads as a real seek, not a silent update
+            flashSeek(tabs[sourceKey].root);
             setTimeout(() => {
                 tabs[peerKey].t = tabs[sourceKey].t;
                 renderTab(tabs[peerKey]);
+                flashSeek(tabs[peerKey].root);
                 pulse();
                 broadcasting = false;
             }, 90);
         };
 
+        // Restart the film animations mid-stride + trigger the sweep overlay
+        let seekFlashTimers = [];
+        const flashSeek = (root) => {
+            if (!root) return;
+            root.classList.remove('demo-seeking');
+            // Restart every animated layer from frame zero so the jump is visible
+            const film = root.querySelector('.demo-film');
+            if (film) {
+                film.classList.add('demo-reset');
+                void film.offsetWidth; // force reflow so the browser commits the reset
+                film.classList.remove('demo-reset');
+            }
+            void root.offsetWidth;
+            root.classList.add('demo-seeking');
+            const t = setTimeout(() => root.classList.remove('demo-seeking'), 360);
+            seekFlashTimers.push(t);
+        };
+
         const setPopupOpen = (open) => {
             scene.classList.toggle('popup-open', open);
             launcher.setAttribute('aria-expanded', open ? 'true' : 'false');
@@ -651,6 +672,10 @@ document.addEventListener('DOMContentLoaded', () => {
 
         const flashSelect = () => {
             if (!videoSelect) return;
+            // Actually pick the Stranger Things tab so the placeholder reads as chosen
+            if (videoSelect.options.length > 1) {
+                videoSelect.selectedIndex = 1;
+            }
             videoSelect.classList.remove('demo-attn');
             void videoSelect.offsetWidth;
             videoSelect.classList.add('demo-attn');
diff --git a/website/locales/de.json b/website/locales/de.json
index 54c82ff..fe042c3 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Raum erstellen",
   "DEMO_JOINED": "Raum beigetreten",
   "DEMO_TAB_SELECTED": "Tab ausgewählt",
+  "DEMO_SELECT_PLACEHOLDER": "Video-Tab wählen…",
   "ADD_TO_CHROME": "Zu Chrome hinzufügen",
   "ADD_TO_FIREFOX": "Zu Firefox hinzufügen",
   "COMPAT_HEADING": "Funktioniert auf deinen Lieblingsplattformen",
diff --git a/website/locales/en.json b/website/locales/en.json
index 4134bbb..65e126f 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Create Room",
   "DEMO_JOINED": "Room joined",
   "DEMO_TAB_SELECTED": "Tab selected",
+  "DEMO_SELECT_PLACEHOLDER": "Choose a video tab…",
   "ADD_TO_CHROME": "Add to Chrome",
   "ADD_TO_FIREFOX": "Add to Firefox",
   "COMPAT_HEADING": "Works on your favorite platforms",
diff --git a/website/locales/es.json b/website/locales/es.json
index 342cca6..239061e 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Crear sala",
   "DEMO_JOINED": "Conectado a la sala",
   "DEMO_TAB_SELECTED": "Pestaña seleccionada",
+  "DEMO_SELECT_PLACEHOLDER": "Elige una pestaña de video…",
   "ADD_TO_CHROME": "Añadir a Chrome",
   "ADD_TO_FIREFOX": "Añadir a Firefox",
   "COMPAT_HEADING": "Funciona en tus plataformas favoritas",
diff --git a/website/locales/fr.json b/website/locales/fr.json
index 9a316d0..1e4b421 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Créer un salon",
   "DEMO_JOINED": "Salon rejoint",
   "DEMO_TAB_SELECTED": "Onglet sélectionné",
+  "DEMO_SELECT_PLACEHOLDER": "Choisir un onglet vidéo…",
   "ADD_TO_CHROME": "Ajouter à Chrome",
   "ADD_TO_FIREFOX": "Ajouter à Firefox",
   "COMPAT_HEADING": "Fonctionne sur vos plateformes préférées",
diff --git a/website/locales/it.json b/website/locales/it.json
index ac8d658..02b820d 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Crea stanza",
   "DEMO_JOINED": "Entrato nella stanza",
   "DEMO_TAB_SELECTED": "Scheda selezionata",
+  "DEMO_SELECT_PLACEHOLDER": "Scegli una scheda video…",
   "ADD_TO_CHROME": "Aggiungi a Chrome",
   "ADD_TO_FIREFOX": "Aggiungi a Firefox",
   "COMPAT_HEADING": "Compatibile con le tue piattaforme preferite",
diff --git a/website/locales/ja.json b/website/locales/ja.json
index 3ffd60d..e534edb 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "ルームを作成",
   "DEMO_JOINED": "ルームに参加",
   "DEMO_TAB_SELECTED": "タブを選択済み",
+  "DEMO_SELECT_PLACEHOLDER": "動画タブを選ぶ…",
   "ADD_TO_CHROME": "Chromeに追加",
   "ADD_TO_FIREFOX": "Firefoxに追加",
   "COMPAT_HEADING": "お気に入りのプラットフォームで動作",
diff --git a/website/locales/ko.json b/website/locales/ko.json
index 662dd1b..12c123c 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "방 만들기",
   "DEMO_JOINED": "방 참여됨",
   "DEMO_TAB_SELECTED": "탭 선택됨",
+  "DEMO_SELECT_PLACEHOLDER": "동영상 탭 선택…",
   "ADD_TO_CHROME": "Chrome에 추가",
   "ADD_TO_FIREFOX": "Firefox에 추가",
   "COMPAT_HEADING": "가장 좋아하는 플랫폼에서 작동합니다",
diff --git a/website/locales/nl.json b/website/locales/nl.json
index 7cbf669..8cc23f4 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Kamer aanmaken",
   "DEMO_JOINED": "In de kamer",
   "DEMO_TAB_SELECTED": "Tabblad geselecteerd",
+  "DEMO_SELECT_PLACEHOLDER": "Kies een videotabblad…",
   "ADD_TO_CHROME": "Toevoegen aan Chrome",
   "ADD_TO_FIREFOX": "Toevoegen aan Firefox",
   "COMPAT_HEADING": "Werkt op uw favoriete platforms",
diff --git a/website/locales/pl.json b/website/locales/pl.json
index a43d46c..f651f19 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Utwórz pokój",
   "DEMO_JOINED": "Dołączono do pokoju",
   "DEMO_TAB_SELECTED": "Karta wybrana",
+  "DEMO_SELECT_PLACEHOLDER": "Wybierz kartę wideo…",
   "ADD_TO_CHROME": "Dodaj do Chrome",
   "ADD_TO_FIREFOX": "Dodaj do Firefox",
   "COMPAT_HEADING": "Działa na Twoich ulubionych platformach",
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index 075c032..5b6c429 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Criar sala",
   "DEMO_JOINED": "Entrou na sala",
   "DEMO_TAB_SELECTED": "Aba selecionada",
+  "DEMO_SELECT_PLACEHOLDER": "Escolha uma aba de vídeo…",
   "ADD_TO_CHROME": "Adicionar ao Chrome",
   "ADD_TO_FIREFOX": "Adicionar ao Firefox",
   "COMPAT_HEADING": "Funciona nas suas plataformas favoritas",
diff --git a/website/locales/pt.json b/website/locales/pt.json
index f3afdf7..e435a86 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Criar sala",
   "DEMO_JOINED": "Entrou na sala",
   "DEMO_TAB_SELECTED": "Separador selecionado",
+  "DEMO_SELECT_PLACEHOLDER": "Escolha um separador de vídeo…",
   "ADD_TO_CHROME": "Adicionar ao Chrome",
   "ADD_TO_FIREFOX": "Adicionar ao Firefox",
   "COMPAT_HEADING": "Funciona nas suas plataformas favoritas",
diff --git a/website/locales/ru.json b/website/locales/ru.json
index 5bc8d70..70b1919 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Создать комнату",
   "DEMO_JOINED": "В комнате",
   "DEMO_TAB_SELECTED": "Вкладка выбрана",
+  "DEMO_SELECT_PLACEHOLDER": "Выберите вкладку с видео…",
   "ADD_TO_CHROME": "Установить в Chrome",
   "ADD_TO_FIREFOX": "Установить в Firefox",
   "COMPAT_HEADING": "Работает на ваших любимых платформах",
diff --git a/website/locales/tr.json b/website/locales/tr.json
index 13ace76..7e2a5ca 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Oda oluştur",
   "DEMO_JOINED": "Odaya katıldı",
   "DEMO_TAB_SELECTED": "Sekme seçildi",
+  "DEMO_SELECT_PLACEHOLDER": "Bir video sekmesi seçin…",
   "ADD_TO_CHROME": "Chrome'a Ekle",
   "ADD_TO_FIREFOX": "Firefox'a Ekle",
   "COMPAT_HEADING": "En sevdiğiniz platformlarda çalışır",
diff --git a/website/locales/uk.json b/website/locales/uk.json
index 2b39483..b5d50a1 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "Створити кімнату",
   "DEMO_JOINED": "У кімнаті",
   "DEMO_TAB_SELECTED": "Вкладку вибрано",
+  "DEMO_SELECT_PLACEHOLDER": "Оберіть вкладку з відео…",
   "ADD_TO_CHROME": "Додати до Chrome",
   "ADD_TO_FIREFOX": "Додати до Firefox",
   "COMPAT_HEADING": "Працює на ваших улюблених платформах",
diff --git a/website/locales/zh.json b/website/locales/zh.json
index 21737a5..89f91b0 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -23,6 +23,7 @@
   "DEMO_CREATE_ROOM": "创建房间",
   "DEMO_JOINED": "已加入房间",
   "DEMO_TAB_SELECTED": "已选择标签页",
+  "DEMO_SELECT_PLACEHOLDER": "选择视频标签页…",
   "ADD_TO_CHROME": "添加到Chrome",
   "ADD_TO_FIREFOX": "添加到Firefox",
   "COMPAT_HEADING": "适用于您最喜欢的平台",
diff --git a/website/style.css b/website/style.css
index 5f7fce9..22fa8c8 100644
--- a/website/style.css
+++ b/website/style.css
@@ -218,16 +218,16 @@ nav {
 .hero {
     min-height: 100vh;
     display: flex;
-    align-items: center;
-    padding-top: 8rem;
-    padding-bottom: 4rem;
+    align-items: flex-start;
+    padding-top: 7.5rem;
+    padding-bottom: 3rem;
 }
 
 .hero-grid {
     display: grid;
     grid-template-columns: 1.2fr 1fr;
-    align-items: center;
-    gap: 4rem;
+    align-items: start;
+    gap: 3rem;
     text-align: left;
     width: 100%;
 }
@@ -236,7 +236,7 @@ nav {
     font-size: 4.5rem;
     font-weight: 800;
     line-height: 1.1;
-    margin-bottom: 1.5rem;
+    margin-bottom: 1.4rem;
     padding-bottom: 0.1em;
     background: linear-gradient(to bottom, #fff 40%, #6366f1);
     -webkit-background-clip: text;
@@ -251,7 +251,7 @@ nav {
 .hero-text p, .hero-subtitle {
     font-size: 1.25rem;
     color: var(--text-muted);
-    margin-bottom: 2.5rem;
+    margin-bottom: 1.9rem;
     max-width: 600px;
     font-weight: 400;
     line-height: 1.6;
@@ -343,6 +343,11 @@ nav {
     transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
 }
 
+.version-badge-below {
+    margin-bottom: 0;
+    margin-top: 1.5rem;
+}
+
 .version-badge:hover {
     background: rgba(99, 102, 241, 0.2);
     box-shadow: 0 0 16px rgba(99, 102, 241, 0.3);
@@ -2977,13 +2982,13 @@ header[id] {
 .hero-demo-scene {
     position: relative;
     width: 100%;
-    height: 370px;
-    height: calc(63cqw + 84px);
+    height: 390px;
+    height: calc(66cqw + 78px);
     transition: height 0.45s cubic-bezier(0.22, 1, 0.36, 1);
 }
 
 .hero-demo-scene.popup-open {
-    height: 590px;
+    height: 600px;
 }
 
 /* While initializing, suppress all transitions so the popup can start closed
@@ -3048,8 +3053,8 @@ header[id] {
 /* Video tab cards: a clean window cascade — the right one is in front */
 .demo-tab-card {
     position: absolute;
-    width: 274px;
-    width: 62cqw;
+    width: 310px;
+    width: 70cqw;
     background: #131c31;
     border: 1px solid rgba(255, 255, 255, 0.09);
     border-radius: 14px;
@@ -3068,8 +3073,8 @@ header[id] {
 /* Card A = the foreground window at the top right ("your" browser,
    hosts the extension icon in its toolbar) */
 .demo-tab-a {
-    top: 30px;
-    right: 0;
+    top: 22px;
+    right: -3%;
     transform: rotate(1.2deg);
     transform-origin: top right;
     z-index: 3;
@@ -3077,21 +3082,21 @@ header[id] {
 
 /* Card B = the friend's window, lower left, tucked behind */
 .demo-tab-b {
-    top: 168px;
-    top: calc(28cqw + 44px);
-    left: 0;
-    transform: rotate(-1.5deg);
+    top: 142px;
+    top: calc(20cqw + 40px);
+    left: -3%;
+    transform: rotate(-1.6deg);
     transform-origin: top left;
     z-index: 2;
 }
 
 /* When the popup slides in from the right edge, the tabs step aside */
 .hero-demo-scene.popup-open .demo-tab-a {
-    transform: rotate(1deg) translate(-55%, 2%) scale(0.9);
+    transform: rotate(1deg) translate(-48%, 2%) scale(0.88);
 }
 
 .hero-demo-scene.popup-open .demo-tab-b {
-    transform: rotate(-1.5deg) scale(0.95);
+    transform: rotate(-1.6deg) scale(0.94);
 }
 
 .demo-tab-titlebar {
@@ -3533,62 +3538,134 @@ header[id] {
     height: 100%;
 }
 
-.film-limb {
-    stroke: #e2e8f0;
-    stroke-width: 2;
-    stroke-linecap: round;
+/* Cinematic "movie" scene: a moonlit landscape with parallax mountains,
+   twinkling stars, a glowing moon, and a drifting firefly. Every layer
+   freezes when playback pauses — on both tabs at once. */
+.demo-film {
+    position: absolute;
+    inset: 0;
+    width: 100%;
+    height: 100%;
 }
 
-.film-walker {
-    transform: translate(-15px, 74px);
-    animation: filmWalk 10s linear infinite;
-}
-
-@keyframes filmWalk {
-    to { transform: translate(175px, 74px); }
-}
-
-.film-bob {
-    animation: filmBob 0.5s ease-in-out infinite alternate;
-}
-
-@keyframes filmBob {
-    to { transform: translateY(-1.8px); }
-}
-
-.film-swing-1,
-.film-swing-2 {
+/* Stars: staggered twinkle so the sky feels alive */
+.film-star {
     transform-box: fill-box;
-    transform-origin: top center;
+    transform-origin: center;
+    animation: filmTwinkle 2.8s ease-in-out infinite;
+}
+.film-star:nth-child(2) { animation-duration: 3.4s; animation-delay: 0.5s; }
+.film-star:nth-child(3) { animation-duration: 2.4s; animation-delay: 1.1s; }
+.film-star:nth-child(4) { animation-duration: 3.6s; animation-delay: 0.3s; }
+.film-star:nth-child(5) { animation-duration: 2.6s; animation-delay: 1.6s; }
+.film-star:nth-child(6) { animation-duration: 3.2s; animation-delay: 0.8s; }
+.film-star:nth-child(7) { animation-duration: 2.2s; animation-delay: 1.3s; }
+
+@keyframes filmTwinkle {
+    0%, 100% { opacity: 0.25; transform: scale(0.85); }
+    50% { opacity: 1; transform: scale(1.15); }
 }
 
-.film-swing-1 { animation: filmSwing 0.5s ease-in-out infinite alternate; }
-.film-swing-2 { animation: filmSwing 0.5s ease-in-out infinite alternate-reverse; }
-
-@keyframes filmSwing {
-    from { transform: rotate(30deg); }
-    to { transform: rotate(-30deg); }
+/* Moon: gentle glow pulse + slow arc drift */
+.film-moon {
+    transform-box: fill-box;
+    transform-origin: center;
+    animation: filmMoon 6s ease-in-out infinite alternate;
 }
 
-.film-ball-x {
-    animation: filmBallX 6.5s linear infinite;
+@keyframes filmMoon {
+    from { transform: translate(0, 0); filter: drop-shadow(0 0 4px rgba(241,245,249,0.5)); }
+    to { transform: translate(-6px, 3px); filter: drop-shadow(0 0 10px rgba(241,245,249,0.95)); }
 }
 
-@keyframes filmBallX {
-    to { transform: translateX(175px); }
+/* Mountain layers: subtle parallax sway (oscillates so it never runs off-edge) */
+.film-mtn-back {
+    transform-box: fill-box;
+    animation: filmMtnBack 24s ease-in-out infinite alternate;
 }
 
-.film-ball {
-    animation: filmBallY 0.55s cubic-bezier(0.4, 0, 0.6, 1) infinite alternate;
+@keyframes filmMtnBack {
+    from { transform: translateX(-3px); }
+    to { transform: translateX(3px); }
 }
 
-@keyframes filmBallY {
-    to { transform: translateY(-16px); }
+.film-mtn-front {
+    transform-box: fill-box;
+    animation: filmMtnFront 16s ease-in-out infinite alternate;
+}
+
+@keyframes filmMtnFront {
+    from { transform: translateX(-5px); }
+    to { transform: translateX(5px); }
+}
+
+/* Firefly: warm dot floating across the foreground */
+.film-firefly {
+    animation: filmFireflyX 11s linear infinite;
+}
+
+@keyframes filmFireflyX {
+    from { transform: translate(15px, 0); }
+    to { transform: translate(145px, 0); }
+}
+
+.film-firefly-light {
+    transform-box: fill-box;
+    transform-origin: center;
+    animation: filmFireflyBob 2.6s ease-in-out infinite alternate;
+    filter: drop-shadow(0 0 5px rgba(253, 224, 71, 0.95));
+}
+
+@keyframes filmFireflyBob {
+    from { transform: translateY(-4px) scale(0.9); opacity: 0.7; }
+    to { transform: translateY(4px) scale(1.15); opacity: 1; }
 }
 
 .demo-film * { animation-play-state: paused; }
 .demo-tab-card.playing .demo-film * { animation-play-state: running; }
 
+/* Seek-reset: scrubbing restarts every film layer from frame zero so the
+   jump reads as a real cut, not a silent time update. */
+.demo-film.demo-reset * {
+    animation: none !important;
+}
+
+/* Seek-break: scrubbing the timeline visibly glitches both videos so the
+   jump reads as a real cut instead of an invisible time update. A scanline
+   sweep + brightness pop, and the film animations restart mid-stride. */
+.demo-video-art { transition: filter 0.12s ease-out; }
+
+.demo-tab-card.demo-seeking .demo-video-art {
+    animation-play-state: paused;
+    filter: brightness(1.9) saturate(1.4) blur(0.6px);
+}
+
+.demo-tab-card .demo-seek-sweep {
+    position: absolute;
+    inset: 0;
+    z-index: 4;
+    pointer-events: none;
+    opacity: 0;
+    background: linear-gradient(90deg,
+        transparent 0%,
+        rgba(129, 140, 248, 0.35) 20%,
+        rgba(255, 255, 255, 0.55) 50%,
+        rgba(129, 140, 248, 0.35) 80%,
+        transparent 100%);
+    mix-blend-mode: screen;
+    transform: translateX(-100%);
+}
+
+.demo-tab-card.demo-seeking .demo-seek-sweep {
+    animation: demoSeekSweep 0.34s ease-out;
+}
+
+@keyframes demoSeekSweep {
+    0% { opacity: 0; transform: translateX(-100%); }
+    20% { opacity: 1; }
+    100% { opacity: 0; transform: translateX(100%); }
+}
+
 /* The sync chip only appears once the room is connected (story progression) */
 .demo-sync-chip {
     opacity: 0;
diff --git a/website/template.html b/website/template.html
index 34ae4b7..66939f8 100644
--- a/website/template.html
+++ b/website/template.html
@@ -276,16 +276,12 @@
     <header class="hero" id="main-content">
         <div class="container hero-grid">
             <div class="hero-text">
-                <a href="https://github.com/Shik3i/KoalaSync/blob/main/docs/CHANGELOG.md" target="_blank" rel="noopener" class="version-badge" data-reveal style="text-decoration: none; display: inline-block; transition: transform 0.2s, box-shadow 0.2s;" title="View Changelog">
-                    <span class="version-text-en" lang="en">v2.2.1 OUT NOW</span>
-                    <span class="version-text-de" lang="de">v2.2.1 JETZT VERFÜGBAR</span>
-                </a>
-                <h1 data-reveal>{{HERO_TITLE}}</h1>
-                <p class="hero-subtitle" data-reveal>{{HERO_SUBTITLE}}</p>
-                <div class="hero-mascot-container" data-reveal>
+                <h1>{{HERO_TITLE}}</h1>
+                <p class="hero-subtitle">{{HERO_SUBTITLE}}</p>
+                <div class="hero-mascot-container">
                     <img src="{{ASSET_PATH}}assets/LookDownKoala-1x.webp" srcset="{{ASSET_PATH}}assets/LookDownKoala-1x.webp 90w, {{ASSET_PATH}}assets/LookDownKoala.webp 205w" sizes="90px" alt="{{HERO_MASCOT_ALT}}" class="hero-lookdown-mascot" width="90" height="132" loading="eager" fetchpriority="high" decoding="async">
                 </div>
-                <div class="cta-group" data-reveal>
+                <div class="cta-group">
                     <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc" class="btn btn-primary">
                         <img src="{{ASSET_PATH}}assets/chrome.svg" alt="Chrome" width="20" height="20">
                         <span>{{ADD_TO_CHROME}}</span>
@@ -299,6 +295,10 @@
                         GitHub Releases
                     </a>
                 </div>
+                <a href="https://github.com/Shik3i/KoalaSync/blob/main/docs/CHANGELOG.md" target="_blank" rel="noopener" class="version-badge version-badge-below" style="text-decoration: none; display: inline-block; transition: transform 0.2s, box-shadow 0.2s;" title="View Changelog">
+                    <span class="version-text-en" lang="en">v2.2.1 OUT NOW</span>
+                    <span class="version-text-de" lang="de">v2.2.1 JETZT VERFÜGBAR</span>
+                </a>
             </div>
 
             <!-- Interactive Live Demo: two synced video tabs + the extension popup -->
@@ -321,19 +321,22 @@
                         </div>
                         <div class="demo-video">
                             <div class="demo-video-art" aria-hidden="true"></div>
-                            <svg class="demo-film" viewBox="0 0 160 90" preserveAspectRatio="xMidYMax slice" aria-hidden="true" xmlns="http://www.w3.org/2000/svg">
-                                <ellipse cx="34" cy="98" rx="60" ry="20" fill="rgba(30,27,75,0.6)"/>
-                                <ellipse cx="128" cy="102" rx="75" ry="24" fill="rgba(49,46,129,0.4)"/>
-                                <g class="film-ball-x"><circle class="film-ball" cx="0" cy="74" r="3.2" fill="#a5b4fc"/></g>
-                                <g class="film-walker">
-                                    <g class="film-bob">
-                                        <circle cx="0" cy="-23" r="4.2" fill="#e2e8f0"/>
-                                        <line x1="0" y1="-19" x2="0" y2="-8" class="film-limb"/>
-                                        <line x1="0" y1="-16.5" x2="0" y2="-8.5" class="film-limb film-swing-1"/>
-                                        <line x1="0" y1="-16.5" x2="0" y2="-8.5" class="film-limb film-swing-2"/>
-                                        <line x1="0" y1="-8" x2="0" y2="3" class="film-limb film-swing-1"/>
-                                        <line x1="0" y1="-8" x2="0" y2="3" class="film-limb film-swing-2"/>
-                                    </g>
+                            <div class="demo-seek-sweep" aria-hidden="true"></div>
+                            <svg class="demo-film" viewBox="0 0 160 90" preserveAspectRatio="xMidYMid slice" aria-hidden="true" xmlns="http://www.w3.org/2000/svg">
+                                <g class="film-stars" fill="#e2e8f0">
+                                    <circle class="film-star" cx="18" cy="14" r="0.8"/>
+                                    <circle class="film-star" cx="42" cy="24" r="0.6"/>
+                                    <circle class="film-star" cx="64" cy="10" r="0.9"/>
+                                    <circle class="film-star" cx="90" cy="28" r="0.6"/>
+                                    <circle class="film-star" cx="108" cy="16" r="0.5"/>
+                                    <circle class="film-star" cx="134" cy="22" r="0.8"/>
+                                    <circle class="film-star" cx="150" cy="12" r="0.5"/>
+                                </g>
+                                <circle class="film-moon" cx="122" cy="26" r="7.5" fill="#f1f5f9" opacity="0.92"/>
+                                <path class="film-mtn-back" d="M-12,66 L16,46 L40,60 L66,42 L94,58 L122,44 L150,60 L172,50 L172,92 L-12,92 Z" fill="rgba(30,27,75,0.7)"/>
+                                <path class="film-mtn-front" d="M-12,80 L14,66 L36,78 L60,62 L86,76 L112,64 L140,78 L172,68 L172,92 L-12,92 Z" fill="rgba(49,46,129,0.6)"/>
+                                <g class="film-firefly">
+                                    <circle class="film-firefly-light" cx="0" cy="72" r="1.4" fill="#fde047"/>
                                 </g>
                             </svg>
                             <div class="demo-play-overlay" aria-hidden="true">
@@ -357,19 +360,22 @@
                         </div>
                         <div class="demo-video">
                             <div class="demo-video-art" aria-hidden="true"></div>
-                            <svg class="demo-film" viewBox="0 0 160 90" preserveAspectRatio="xMidYMax slice" aria-hidden="true" xmlns="http://www.w3.org/2000/svg">
-                                <ellipse cx="34" cy="98" rx="60" ry="20" fill="rgba(30,27,75,0.6)"/>
-                                <ellipse cx="128" cy="102" rx="75" ry="24" fill="rgba(49,46,129,0.4)"/>
-                                <g class="film-ball-x"><circle class="film-ball" cx="0" cy="74" r="3.2" fill="#a5b4fc"/></g>
-                                <g class="film-walker">
-                                    <g class="film-bob">
-                                        <circle cx="0" cy="-23" r="4.2" fill="#e2e8f0"/>
-                                        <line x1="0" y1="-19" x2="0" y2="-8" class="film-limb"/>
-                                        <line x1="0" y1="-16.5" x2="0" y2="-8.5" class="film-limb film-swing-1"/>
-                                        <line x1="0" y1="-16.5" x2="0" y2="-8.5" class="film-limb film-swing-2"/>
-                                        <line x1="0" y1="-8" x2="0" y2="3" class="film-limb film-swing-1"/>
-                                        <line x1="0" y1="-8" x2="0" y2="3" class="film-limb film-swing-2"/>
-                                    </g>
+                            <div class="demo-seek-sweep" aria-hidden="true"></div>
+                            <svg class="demo-film" viewBox="0 0 160 90" preserveAspectRatio="xMidYMid slice" aria-hidden="true" xmlns="http://www.w3.org/2000/svg">
+                                <g class="film-stars" fill="#e2e8f0">
+                                    <circle class="film-star" cx="18" cy="14" r="0.8"/>
+                                    <circle class="film-star" cx="42" cy="24" r="0.6"/>
+                                    <circle class="film-star" cx="64" cy="10" r="0.9"/>
+                                    <circle class="film-star" cx="90" cy="28" r="0.6"/>
+                                    <circle class="film-star" cx="108" cy="16" r="0.5"/>
+                                    <circle class="film-star" cx="134" cy="22" r="0.8"/>
+                                    <circle class="film-star" cx="150" cy="12" r="0.5"/>
+                                </g>
+                                <circle class="film-moon" cx="122" cy="26" r="7.5" fill="#f1f5f9" opacity="0.92"/>
+                                <path class="film-mtn-back" d="M-12,66 L16,46 L40,60 L66,42 L94,58 L122,44 L150,60 L172,50 L172,92 L-12,92 Z" fill="rgba(30,27,75,0.7)"/>
+                                <path class="film-mtn-front" d="M-12,80 L14,66 L36,78 L60,62 L86,76 L112,64 L140,78 L172,68 L172,92 L-12,92 Z" fill="rgba(49,46,129,0.6)"/>
+                                <g class="film-firefly">
+                                    <circle class="film-firefly-light" cx="0" cy="72" r="1.4" fill="#fde047"/>
                                 </g>
                             </svg>
                             <div class="demo-play-overlay" aria-hidden="true">
@@ -456,6 +462,7 @@
                                     {{MOCK_09}}
                                 </label>
                                 <select class="mock-input" id="demo-video-select" style="width: 100%; box-sizing: border-box; background: var(--card); border: 1px solid #334155; color: white; padding: 8px; border-radius: 8px; font-family: inherit; font-size: 0.75rem; outline: none; cursor: default;">
+                                    <option value="" class="demo-select-placeholder" selected hidden>{{DEMO_SELECT_PLACEHOLDER}}</option>
                                     <option><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</option>
                                 </select>
                             </div>

From d6a23f2eb5ff66fa64e2367c5e5f3511eaa9a4fc Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 10:57:23 +0200
Subject: [PATCH 129/151] website: Hero layout and mock walkthrough visual
 optimizations

---
 website/app.js        |   1 +
 website/style.css     | 154 ++++++++++++++++++++++++++++--------------
 website/template.html |  54 +++++++++++----
 3 files changed, 145 insertions(+), 64 deletions(-)

diff --git a/website/app.js b/website/app.js
index bd47b58..caa1c57 100644
--- a/website/app.js
+++ b/website/app.js
@@ -716,6 +716,7 @@ document.addEventListener('DOMContentLoaded', () => {
             setRoomJoined(true);
             setConnected(true);
             cursor.classList.remove('visible');
+            scene.classList.add('demo-complete');
             showHint();
         };
 
diff --git a/website/style.css b/website/style.css
index 22fa8c8..0639592 100644
--- a/website/style.css
+++ b/website/style.css
@@ -232,6 +232,22 @@ nav {
     width: 100%;
 }
 
+@media (min-width: 1024px) {
+    .container {
+        max-width: 1200px;
+    }
+    .hero-grid {
+        grid-template-columns: 1.35fr 1fr;
+        gap: 3.5rem;
+    }
+    .cta-group {
+        gap: 0.75rem;
+    }
+    .cta-group .btn {
+        padding: 0.8rem 1.35rem;
+    }
+}
+
 .hero-text h1 {
     font-size: 4.5rem;
     font-weight: 800;
@@ -579,6 +595,43 @@ nav {
     white-space: nowrap;
 }
 
+.demo-room-empty {
+    display: none;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    gap: 12px;
+    padding: 34px 10px;
+    text-align: center;
+}
+.demo-room-empty img {
+    border-radius: 10px;
+    opacity: 0.85;
+    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
+}
+.demo-room-empty-text {
+    font-size: 0.8rem;
+    color: var(--text-muted);
+    font-weight: 600;
+}
+.demo-create-room-btn {
+    background: var(--accent);
+    border: none;
+    color: white;
+    font-weight: 700;
+    padding: 10px 18px;
+    border-radius: 10px;
+    cursor: pointer;
+    transition: transform 0.2s, box-shadow 0.2s;
+}
+.demo-create-room-btn:hover {
+    transform: translateY(-1px);
+    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
+}
+.demo-create-room-btn:active {
+    transform: scale(0.96);
+}
+
 .mock-peer-list {
     display: flex;
     flex-direction: column;
@@ -3529,18 +3582,6 @@ header[id] {
     animation-play-state: paused;
 }
 
-/* Tiny abstract "movie": a walker strolls across, a ball bounces ahead.
-   Pausing freezes every element mid-frame — on both tabs at once. */
-.demo-film {
-    position: absolute;
-    inset: 0;
-    width: 100%;
-    height: 100%;
-}
-
-/* Cinematic "movie" scene: a moonlit landscape with parallax mountains,
-   twinkling stars, a glowing moon, and a drifting firefly. Every layer
-   freezes when playback pauses — on both tabs at once. */
 .demo-film {
     position: absolute;
     inset: 0;
@@ -3578,54 +3619,63 @@ header[id] {
     to { transform: translate(-6px, 3px); filter: drop-shadow(0 0 10px rgba(241,245,249,0.95)); }
 }
 
-/* Mountain layers: subtle parallax sway (oscillates so it never runs off-edge) */
-.film-mtn-back {
-    transform-box: fill-box;
-    animation: filmMtnBack 24s ease-in-out infinite alternate;
+/* Parallax Forest Scroll Layers */
+@keyframes scrollBack {
+    0% { transform: translateX(0); }
+    100% { transform: translateX(-160px); }
+}
+@keyframes scrollMid {
+    0% { transform: translateX(0); }
+    100% { transform: translateX(-160px); }
+}
+@keyframes scrollFore {
+    0% { transform: translateX(0); }
+    100% { transform: translateX(-160px); }
+}
+@keyframes ballBounce {
+    0%, 100% { transform: translateY(0); }
+    50% { transform: translateY(-16px); }
 }
 
-@keyframes filmMtnBack {
-    from { transform: translateX(-3px); }
-    to { transform: translateX(3px); }
+.film-mtn-scroll {
+    animation: scrollBack 12s linear infinite;
+    animation-play-state: paused;
+}
+.film-mid-scroll {
+    animation: scrollMid 6s linear infinite;
+    animation-play-state: paused;
+}
+.film-fore-scroll {
+    animation: scrollFore 3s linear infinite;
+    animation-play-state: paused;
+}
+.film-bounce-ball {
+    transform-origin: bottom center;
+    animation: ballBounce 0.8s ease-in-out infinite;
+    animation-play-state: paused;
+    filter: drop-shadow(0 0 4px #fde047);
 }
 
-.film-mtn-front {
-    transform-box: fill-box;
-    animation: filmMtnFront 16s ease-in-out infinite alternate;
+/* Playback state bindings for all animation layers */
+.demo-tab-card.playing .film-mtn-scroll,
+.demo-tab-card.playing .film-mid-scroll,
+.demo-tab-card.playing .film-fore-scroll,
+.demo-tab-card.playing .film-bounce-ball {
+    animation-play-state: running;
 }
 
-@keyframes filmMtnFront {
-    from { transform: translateX(-5px); }
-    to { transform: translateX(5px); }
+/* Play button pulsing indicator at the end of the walkthrough */
+.hero-demo-scene.demo-complete #demo-tab-a:not(.playing) .demo-icon-wrap {
+    animation: playButtonPulse 1.6s ease-in-out infinite;
+    border-color: #6366f1;
+    box-shadow: 0 0 15px rgba(99, 102, 241, 0.8);
+}
+@keyframes playButtonPulse {
+    0%, 100% { transform: scale(1); box-shadow: 0 0 10px rgba(99, 102, 241, 0.5); }
+    50% { transform: scale(1.12); box-shadow: 0 0 20px rgba(99, 102, 241, 0.9); }
 }
 
-/* Firefly: warm dot floating across the foreground */
-.film-firefly {
-    animation: filmFireflyX 11s linear infinite;
-}
-
-@keyframes filmFireflyX {
-    from { transform: translate(15px, 0); }
-    to { transform: translate(145px, 0); }
-}
-
-.film-firefly-light {
-    transform-box: fill-box;
-    transform-origin: center;
-    animation: filmFireflyBob 2.6s ease-in-out infinite alternate;
-    filter: drop-shadow(0 0 5px rgba(253, 224, 71, 0.95));
-}
-
-@keyframes filmFireflyBob {
-    from { transform: translateY(-4px) scale(0.9); opacity: 0.7; }
-    to { transform: translateY(4px) scale(1.15); opacity: 1; }
-}
-
-.demo-film * { animation-play-state: paused; }
-.demo-tab-card.playing .demo-film * { animation-play-state: running; }
-
-/* Seek-reset: scrubbing restarts every film layer from frame zero so the
-   jump reads as a real cut, not a silent time update. */
+/* Seek-reset: scrubbing restarts animations from frame zero */
 .demo-film.demo-reset * {
     animation: none !important;
 }
diff --git a/website/template.html b/website/template.html
index 66939f8..b62bc4a 100644
--- a/website/template.html
+++ b/website/template.html
@@ -333,11 +333,26 @@
                                     <circle class="film-star" cx="150" cy="12" r="0.5"/>
                                 </g>
                                 <circle class="film-moon" cx="122" cy="26" r="7.5" fill="#f1f5f9" opacity="0.92"/>
-                                <path class="film-mtn-back" d="M-12,66 L16,46 L40,60 L66,42 L94,58 L122,44 L150,60 L172,50 L172,92 L-12,92 Z" fill="rgba(30,27,75,0.7)"/>
-                                <path class="film-mtn-front" d="M-12,80 L14,66 L36,78 L60,62 L86,76 L112,64 L140,78 L172,68 L172,92 L-12,92 Z" fill="rgba(49,46,129,0.6)"/>
-                                <g class="film-firefly">
-                                    <circle class="film-firefly-light" cx="0" cy="72" r="1.4" fill="#fde047"/>
+                                <path class="film-mtn-scroll" d="M0,60 L30,45 L70,55 L110,40 L160,60 L190,45 L230,55 L270,40 L320,60 L320,92 L0,92 Z" fill="rgba(30,27,75,0.7)"/>
+                                <g class="film-mid-scroll">
+                                    <polygon points="20,76 26,60 32,76" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="55,78 63,52 71,78" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="95,76 101,62 107,76" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="135,77 144,55 153,77" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="180,76 186,60 192,76" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="215,78 223,52 231,78" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="255,76 261,62 267,76" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="295,77 304,55 313,77" fill="rgba(49,46,129,0.55)"/>
+                                    <path d="M0,76 Q40,73 80,76 T160,76 Q200,73 240,76 T320,76 L320,92 L0,92 Z" fill="rgba(49,46,129,0.55)"/>
                                 </g>
+                                <g class="film-fore-scroll">
+                                    <polygon points="40,84 52,48 64,84" fill="#090d16"/>
+                                    <polygon points="115,84 128,42 141,84" fill="#090d16"/>
+                                    <polygon points="200,84 212,48 224,84" fill="#090d16"/>
+                                    <polygon points="275,84 288,42 301,84" fill="#090d16"/>
+                                    <path d="M0,84 Q80,82 160,84 T320,84 L320,92 L0,92 Z" fill="#090d16"/>
+                                </g>
+                                <circle class="film-bounce-ball" cx="80" cy="46" r="3.5" fill="#fde047"/>
                             </svg>
                             <div class="demo-play-overlay" aria-hidden="true">
                                 <span class="demo-icon-wrap">
@@ -372,11 +387,26 @@
                                     <circle class="film-star" cx="150" cy="12" r="0.5"/>
                                 </g>
                                 <circle class="film-moon" cx="122" cy="26" r="7.5" fill="#f1f5f9" opacity="0.92"/>
-                                <path class="film-mtn-back" d="M-12,66 L16,46 L40,60 L66,42 L94,58 L122,44 L150,60 L172,50 L172,92 L-12,92 Z" fill="rgba(30,27,75,0.7)"/>
-                                <path class="film-mtn-front" d="M-12,80 L14,66 L36,78 L60,62 L86,76 L112,64 L140,78 L172,68 L172,92 L-12,92 Z" fill="rgba(49,46,129,0.6)"/>
-                                <g class="film-firefly">
-                                    <circle class="film-firefly-light" cx="0" cy="72" r="1.4" fill="#fde047"/>
+                                <path class="film-mtn-scroll" d="M0,60 L30,45 L70,55 L110,40 L160,60 L190,45 L230,55 L270,40 L320,60 L320,92 L0,92 Z" fill="rgba(30,27,75,0.7)"/>
+                                <g class="film-mid-scroll">
+                                    <polygon points="20,76 26,60 32,76" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="55,78 63,52 71,78" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="95,76 101,62 107,76" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="135,77 144,55 153,77" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="180,76 186,60 192,76" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="215,78 223,52 231,78" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="255,76 261,62 267,76" fill="rgba(49,46,129,0.55)"/>
+                                    <polygon points="295,77 304,55 313,77" fill="rgba(49,46,129,0.55)"/>
+                                    <path d="M0,76 Q40,73 80,76 T160,76 Q200,73 240,76 T320,76 L320,92 L0,92 Z" fill="rgba(49,46,129,0.55)"/>
                                 </g>
+                                <g class="film-fore-scroll">
+                                    <polygon points="40,84 52,48 64,84" fill="#090d16"/>
+                                    <polygon points="115,84 128,42 141,84" fill="#090d16"/>
+                                    <polygon points="200,84 212,48 224,84" fill="#090d16"/>
+                                    <polygon points="275,84 288,42 301,84" fill="#090d16"/>
+                                    <path d="M0,84 Q80,82 160,84 T320,84 L320,92 L0,92 Z" fill="#090d16"/>
+                                </g>
+                                <circle class="film-bounce-ball" cx="80" cy="46" r="3.5" fill="#fde047"/>
                             </svg>
                             <div class="demo-play-overlay" aria-hidden="true">
                                 <span class="demo-icon-wrap">
@@ -410,10 +440,10 @@
                         <!-- ROOM TAB -->
                         <div id="mock-room" class="mock-screen active">
                             <!-- Pre-room state, shown only during the scripted walkthrough -->
-                            <div id="demo-room-empty" style="display: none; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding: 34px 10px; text-align: center;">
-                                <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="" width="42" height="42" style="border-radius: 10px; opacity: 0.85;" loading="eager" decoding="async">
-                                <div style="font-size: 0.8rem; color: var(--text-muted); font-weight: 600;">{{DEMO_NO_ROOM}}</div>
-                                <button id="demo-create-room" class="mock-btn" type="button" style="background: var(--accent); border: none; color: white; font-weight: 700; padding: 10px 18px; border-radius: 10px; cursor: pointer;">{{DEMO_CREATE_ROOM}}</button>
+                            <div id="demo-room-empty" class="demo-room-empty">
+                                <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="" width="42" height="42" loading="eager" decoding="async">
+                                <div class="demo-room-empty-text">{{DEMO_NO_ROOM}}</div>
+                                <button id="demo-create-room" class="demo-create-room-btn" type="button">{{DEMO_CREATE_ROOM}}</button>
                             </div>
                             <div id="demo-room-joined">
                             <div class="mock-joined-room" style="display: flex; justify-content: space-between; align-items: center; border-left: 4px solid var(--accent); padding: 8px 10px; background: var(--card); border-radius: 8px; margin-bottom: 12px;" title="The room you are currently connected to">

From 6b81668e16c7eff7c64fc40b6679e1708c3867fa Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:01:57 +0200
Subject: [PATCH 130/151] website: Fix mockup animation sync/pausing and
 improve 3-step guide copy

---
 website/app.js          | 17 ++++++++++++++++
 website/locales/de.json |  6 +++---
 website/locales/en.json |  6 +++---
 website/style.css       | 45 +++++++++++++----------------------------
 4 files changed, 37 insertions(+), 37 deletions(-)

diff --git a/website/app.js b/website/app.js
index caa1c57..14d6c21 100644
--- a/website/app.js
+++ b/website/app.js
@@ -456,6 +456,23 @@ document.addEventListener('DOMContentLoaded', () => {
         const renderTab = (tab) => {
             tab.fill.style.width = ((tab.t / EP_LEN) * 100).toFixed(2) + '%';
             tab.time.textContent = fmt(tab.t);
+            
+            // Frame-locked parallax offsets
+            const t = tab.t;
+            const backOffset = (t * -8) % 160;
+            const midOffset = (t * -24) % 160;
+            const foreOffset = (t * -48) % 160;
+            
+            // Bouncing ball logic (bounce Y is computed as parabolic arc)
+            const bouncePeriod = 0.8;
+            const bounceProgress = (t % bouncePeriod) / bouncePeriod;
+            const bounceHeight = 16;
+            const bounceY = 4 * bounceProgress * (1 - bounceProgress) * -bounceHeight;
+            
+            tab.root.style.setProperty('--scroll-back', backOffset.toFixed(2) + 'px');
+            tab.root.style.setProperty('--scroll-mid', midOffset.toFixed(2) + 'px');
+            tab.root.style.setProperty('--scroll-fore', foreOffset.toFixed(2) + 'px');
+            tab.root.style.setProperty('--bounce-y', bounceY.toFixed(2) + 'px');
         };
 
         const updateSyncUI = () => {
diff --git a/website/locales/de.json b/website/locales/de.json
index fe042c3..70bc428 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Funktioniert auf allen Seiten, die Skript-Injektionen in Standard-HTML5-Videoplayer erlauben. Seiten mit extrem strengen Content Security Policies (CSP), DRM-Kopierschutz oder stark verschachtelten Player-Wrappern (z. B. komplexe Shadow-DOMs) können die automatische Steuerung blockieren.",
   "STEPS_TITLE": "Erste Schritte",
   "STEP_1_TITLE": "Erweiterung installieren",
-  "STEP_1_DESC": "Füge KoalaSync aus dem Chrome Web Store, den Firefox Add-ons oder über die Entwickler-ZIP von GitHub zu deinem Browser hinzu.",
+  "STEP_1_DESC": "Füge KoalaSync in Sekundenschnelle zu deinem Browser hinzu. Unterstützt Chrome, Firefox, Edge, Brave und alle Chromium-Browser. Komplett ohne Anmeldung.",
   "STEP_1_ILLUS_DESC": "Privatsphäre-fokussierte Video-Synchronisation",
   "STEP_1_ILLUS_DL_CHROME": "Download für Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Download für Firefox",
   "STEP_1_ILLUS_ACTIVE": "Erweiterung aktiv",
   "STEP_1_ILLUS_READY": "Bereit zum Mitschauen!",
   "STEP_2_TITLE": "Raum erstellen",
-  "STEP_2_DESC": "Öffne die Erweiterung und klicke auf „+ Neuer Raum“. KoalaSync generiert automatisch eine sichere Raum-ID samt Passwort, tritt dem Raum bei und kopiert den Einladungslink in deine Zwischenablage.",
+  "STEP_2_DESC": "Ein Klick auf „Neuer Raum“ generiert sofort eine sichere, verschlüsselte Sitzung und kopiert den Einladungslink automatisch in deine Zwischenablage.",
   "STEP_2_ILLUS_ROOM": "Raum",
   "STEP_2_ILLUS_SYNC": "Sync",
   "STEP_2_ILLUS_SETTINGS": "Optionen",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Manuell verbinden / Erweitert",
   "STEP_2_ILLUS_COPIED": "Einladungslink kopiert!",
   "STEP_3_TITLE": "Teilen & Synchronisieren",
-  "STEP_3_DESC": "Sende den Einladungslink an deine Freunde. Sobald sie beitreten, wähle deinen Video-Tab aus und genieße die synchronisierte Wiedergabe.",
+  "STEP_3_DESC": "Teile den Link mit deinen Freunden. Dank der automatischen Erkennung treten sie mit nur einem Klick bei — ganz ohne Registrierung. Wählt euer Video und schaut perfekt synchron.",
   "STEP_3_ILLUS_IN_SYNC": "SYNCHRON",
   "SELF_TITLE": "Für Self-Hoster",
   "SELF_SUBTITLE": "Du traust dem Server nicht? Behalte die volle Datenhoheit. Richte deinen eigenen privaten Relay-Server in wenigen Minuten ein.",
diff --git a/website/locales/en.json b/website/locales/en.json
index 65e126f..b25ab7c 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Works on websites that allow script injections into standard HTML5 video tags. Websites with highly strict Content Security Policies (CSP), DRM copy protection, or heavily obfuscated player wrappers (like complex shadow DOMs) might restrict automated control or injection.",
   "STEPS_TITLE": "Getting Started",
   "STEP_1_TITLE": "Install Extension",
-  "STEP_1_DESC": "Add KoalaSync to your browser from the Chrome Web Store, Firefox Add-ons, or download the latest developer ZIP from GitHub.",
+  "STEP_1_DESC": "Add KoalaSync to your browser in seconds. Works on Chrome, Firefox, Edge, Brave, and other Chromium browsers. 100% free and account-free.",
   "STEP_1_ILLUS_DESC": "Privacy-first video synchronizer",
   "STEP_1_ILLUS_DL_CHROME": "Download for Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Download for Firefox",
   "STEP_1_ILLUS_ACTIVE": "Extension Active",
   "STEP_1_ILLUS_READY": "Ready to watch together!",
   "STEP_2_TITLE": "Create a Room",
-  "STEP_2_DESC": "Open the extension popup and click '+ Create New Room'. KoalaSync automatically generates a secure Room ID and Password, joins it, and copies the invite link to your clipboard.",
+  "STEP_2_DESC": "Open the extension popup and click '+ Create New Room'. KoalaSync instantly establishes a secure, encrypted session and copies the invitation link.",
   "STEP_2_ILLUS_ROOM": "Room",
   "STEP_2_ILLUS_SYNC": "Sync",
   "STEP_2_ILLUS_SETTINGS": "Settings",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Manual Connect / Advanced",
   "STEP_2_ILLUS_COPIED": "Invite link copied!",
   "STEP_3_TITLE": "Share & Sync",
-  "STEP_3_DESC": "Send the invite link to your friends. Once they join, select your video tab and enjoy synchronized playback.",
+  "STEP_3_DESC": "Send the link to your friends. They join with a single click — no registration required. Pick any video and enjoy it in perfect real-time sync.",
   "STEP_3_ILLUS_IN_SYNC": "IN SYNC",
   "SELF_TITLE": "For Self-Hosters",
   "SELF_SUBTITLE": "Don't trust our server? Maintain full data sovereignty. Deploy your own private relay server in minutes.",
diff --git a/website/style.css b/website/style.css
index 0639592..e0e2374 100644
--- a/website/style.css
+++ b/website/style.css
@@ -3612,6 +3612,7 @@ header[id] {
     transform-box: fill-box;
     transform-origin: center;
     animation: filmMoon 6s ease-in-out infinite alternate;
+    animation-play-state: paused;
 }
 
 @keyframes filmMoon {
@@ -3619,48 +3620,30 @@ header[id] {
     to { transform: translate(-6px, 3px); filter: drop-shadow(0 0 10px rgba(241,245,249,0.95)); }
 }
 
-/* Parallax Forest Scroll Layers */
-@keyframes scrollBack {
-    0% { transform: translateX(0); }
-    100% { transform: translateX(-160px); }
-}
-@keyframes scrollMid {
-    0% { transform: translateX(0); }
-    100% { transform: translateX(-160px); }
-}
-@keyframes scrollFore {
-    0% { transform: translateX(0); }
-    100% { transform: translateX(-160px); }
-}
-@keyframes ballBounce {
-    0%, 100% { transform: translateY(0); }
-    50% { transform: translateY(-16px); }
-}
-
 .film-mtn-scroll {
-    animation: scrollBack 12s linear infinite;
-    animation-play-state: paused;
+    transform: translateX(var(--scroll-back, 0px));
 }
 .film-mid-scroll {
-    animation: scrollMid 6s linear infinite;
-    animation-play-state: paused;
+    transform: translateX(var(--scroll-mid, 0px));
 }
 .film-fore-scroll {
-    animation: scrollFore 3s linear infinite;
-    animation-play-state: paused;
+    transform: translateX(var(--scroll-fore, 0px));
 }
 .film-bounce-ball {
     transform-origin: bottom center;
-    animation: ballBounce 0.8s ease-in-out infinite;
-    animation-play-state: paused;
+    transform: translateY(var(--bounce-y, 0px));
     filter: drop-shadow(0 0 4px #fde047);
 }
 
-/* Playback state bindings for all animation layers */
-.demo-tab-card.playing .film-mtn-scroll,
-.demo-tab-card.playing .film-mid-scroll,
-.demo-tab-card.playing .film-fore-scroll,
-.demo-tab-card.playing .film-bounce-ball {
+/* Twinkle & Glow play state bindings */
+.film-star {
+    transform-box: fill-box;
+    transform-origin: center;
+    animation: filmTwinkle 2.8s ease-in-out infinite;
+    animation-play-state: paused;
+}
+.demo-tab-card.playing .film-star,
+.demo-tab-card.playing .film-moon {
     animation-play-state: running;
 }
 

From 537c8f3c60fc32a11b32853bae6fc22842718551 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:05:45 +0200
Subject: [PATCH 131/151] website: Visual polish of 3-step guide and
 description updates in 13 locales

---
 website/locales/es.json    |  6 +--
 website/locales/fr.json    |  6 +--
 website/locales/it.json    |  6 +--
 website/locales/ja.json    |  6 +--
 website/locales/ko.json    |  6 +--
 website/locales/nl.json    |  6 +--
 website/locales/pl.json    |  6 +--
 website/locales/pt-BR.json |  6 +--
 website/locales/pt.json    |  6 +--
 website/locales/ru.json    |  6 +--
 website/locales/tr.json    |  6 +--
 website/locales/uk.json    |  6 +--
 website/locales/zh.json    |  6 +--
 website/style.css          | 95 ++++++++++++++++++++++----------------
 14 files changed, 95 insertions(+), 78 deletions(-)

diff --git a/website/locales/es.json b/website/locales/es.json
index 239061e..e2f7afc 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Funciona en sitios web que permiten inyecciones de scripts en etiquetas de video HTML5 estándar. Los sitios con políticas de seguridad (CSP) muy estrictas, protección DRM o reproductores ofuscados (como DOMs de sombra complejos) pueden restringir el control automático.",
   "STEPS_TITLE": "Cómo empezar",
   "STEP_1_TITLE": "Instalar la extensión",
-  "STEP_1_DESC": "Añade KoalaSync a tu navegador desde la Chrome Web Store, complementos de Firefox o descarga el archivo ZIP para desarrolladores desde GitHub.",
+  "STEP_1_DESC": "Añade KoalaSync a tu navegador en segundos. Funciona en Chrome, Firefox, Edge, Brave y otros navegadores Chromium. 100% gratis y sin cuentas.",
   "STEP_1_ILLUS_DESC": "Sincronizador de video privado",
   "STEP_1_ILLUS_DL_CHROME": "Descargar para Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Descargar para Firefox",
   "STEP_1_ILLUS_ACTIVE": "Extensión activa",
   "STEP_1_ILLUS_READY": "¡Listo para ver juntos!",
   "STEP_2_TITLE": "Crear una sala",
-  "STEP_2_DESC": "Abre el menú de la extensión y haz clic en '+ Crear nueva sala'. KoalaSync generará automáticamente un ID de sala y una contraseña seguros, se conectará y copiará el enlace al portapapeles.",
+  "STEP_2_DESC": "Abre la extensión y haz clic en '+ Crear nueva sala'. KoalaSync establece al instante una sesión segura y encriptada y copia el enlace de invitación.",
   "STEP_2_ILLUS_ROOM": "Sala",
   "STEP_2_ILLUS_SYNC": "Sincro",
   "STEP_2_ILLUS_SETTINGS": "Ajustes",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Conexión manual / Avanzado",
   "STEP_2_ILLUS_COPIED": "¡Enlace de invitación copiado!",
   "STEP_3_TITLE": "Compartir y Sincronizar",
-  "STEP_3_DESC": "Envía el enlace de invitación a tus amigos. Una vez que se unan, selecciona tu pestaña de video y disfrutad de la reproducción sincronizada.",
+  "STEP_3_DESC": "Envía el enlace a tus amigos. Se unirán con un solo clic, sin necesidad de registrarse. Elige cualquier vídeo y disfrútalo en perfecta sincronización en tiempo real.",
   "STEP_3_ILLUS_IN_SYNC": "SINCRONIZADO",
   "SELF_TITLE": "Para auto-alojadores",
   "SELF_SUBTITLE": "¿No te fías de nuestro servidor? Mantén la soberanía total de tus datos. Despliega tu propio servidor de retransmisión en minutos.",
diff --git a/website/locales/fr.json b/website/locales/fr.json
index 1e4b421..69ee91a 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Fonctionne sur les sites web qui autorisent les injections de scripts dans les balises vidéo HTML5 standard. Les sites avec des politiques de sécurité du contenu (CSP) très strictes, une protection contre la copie DRM ou des conteneurs de lecteurs fortement obscurcis (comme des DOM fantômes complexes) peuvent restreindre le contrôle automatisé ou l'injection.",
   "STEPS_TITLE": "Pour commencer",
   "STEP_1_TITLE": "Installer l'extension",
-  "STEP_1_DESC": "Ajoutez KoalaSync à votre navigateur depuis le Chrome Web Store, les modules complémentaires de Firefox, ou téléchargez le dernier fichier ZIP développeur depuis GitHub.",
+  "STEP_1_DESC": "Ajoutez KoalaSync à votre navigateur en quelques secondes. Fonctionne sur Chrome, Firefox, Edge, Brave et autres navigateurs Chromium. 100% gratuit et sans compte.",
   "STEP_1_ILLUS_DESC": "Synchronisateur vidéo respectueux de la vie privée",
   "STEP_1_ILLUS_DL_CHROME": "Télécharger pour Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Télécharger pour Firefox",
   "STEP_1_ILLUS_ACTIVE": "Extension active",
   "STEP_1_ILLUS_READY": "Prêt à regarder ensemble !",
   "STEP_2_TITLE": "Créer un salon",
-  "STEP_2_DESC": "Ouvrez la fenêtre de l'extension et cliquez sur '+ Créer un nouveau salon'. KoalaSync génère automatiquement un identifiant de salon et un mot de passe sécurisés, s'y connecte et copie le lien d'invitation dans votre presse-papiers.",
+  "STEP_2_DESC": "Ouvrez l'extension et cliquez sur '+ Créer un salon'. KoalaSync établit instantanément une session sécurisée et cryptée et copie le lien d'invitation.",
   "STEP_2_ILLUS_ROOM": "Salon",
   "STEP_2_ILLUS_SYNC": "Synchro",
   "STEP_2_ILLUS_SETTINGS": "Options",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Connexion manuelle / Avancé",
   "STEP_2_ILLUS_COPIED": "Lien d'invitation copié !",
   "STEP_3_TITLE": "Partager & Synchroniser",
-  "STEP_3_DESC": "Envoyez le lien d'invitation à vos amis. Dès qu'ils rejoignent, sélectionnez votre onglet vidéo et profitez de la lecture synchronisée.",
+  "STEP_3_DESC": "Envoyez le lien à vos amis. Ils rejoignent en un clic — sans inscription. Choisissez n'importe quelle vidéo et profitez-en en parfaite synchronisation en temps réel.",
   "STEP_3_ILLUS_IN_SYNC": "SYNCHRONISÉ",
   "SELF_TITLE": "Pour l'auto-hébergement",
   "SELF_SUBTITLE": "Vous ne faites pas confiance à notre serveur ? Conservez votre souveraineté totale sur les données. Déployez votre propre serveur relais en quelques minutes.",
diff --git a/website/locales/it.json b/website/locales/it.json
index 02b820d..818c39b 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Funziona su siti che permettono l'uso di script nei tag video HTML5. Alcuni siti con protezioni DRM molto rigide potrebbero limitare il controllo automatico.",
   "STEPS_TITLE": "Inizia ora",
   "STEP_1_TITLE": "Installa l'Estensione",
-  "STEP_1_DESC": "Aggiungi KoalaSync al tuo browser dal Chrome Web Store o dai componenti aggiuntivi di Firefox.",
+  "STEP_1_DESC": "Aggiungi KoalaSync al tuo browser in pochi secondi. Funziona su Chrome, Firefox, Edge, Brave e altri browser Chromium. 100% gratuito e senza account.",
   "STEP_1_ILLUS_DESC": "Sincronizzatore video privato",
   "STEP_1_ILLUS_DL_CHROME": "Scarica per Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Scarica per Firefox",
   "STEP_1_ILLUS_ACTIVE": "Estensione Attiva",
   "STEP_1_ILLUS_READY": "Pronti a guardare!",
   "STEP_2_TITLE": "Crea una Stanza",
-  "STEP_2_DESC": "Apri l'estensione e clicca su '+ Crea Nuova Stanza'. Verrà generato un link di invito automaticamente.",
+  "STEP_2_DESC": "Apri l'estensione e clicca su '+ Crea nuova stanza'. KoalaSync avvia istantaneamente una sessione sicura e crittografata e copia il link di invito.",
   "STEP_2_ILLUS_ROOM": "Stanza",
   "STEP_2_ILLUS_SYNC": "Sincro",
   "STEP_2_ILLUS_SETTINGS": "Ajustes",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Manuale / Avanzato",
   "STEP_2_ILLUS_COPIED": "Link copiato!",
   "STEP_3_TITLE": "Condividi e Guarda",
-  "STEP_3_DESC": "Invia il link ai tuoi amici. Una volta connessi, scegli il video e goditi la riproduzione sincronizzata.",
+  "STEP_3_DESC": "Invia il link ai tuoi amici. Si uniranno con un solo clic — nessuna registrazione richiesta. Scegli qualsiasi video e goditelo in perfetta sincronizzazione in tempo reale.",
   "STEP_3_ILLUS_IN_SYNC": "SINCRONIZZATI",
   "SELF_TITLE": "Per utenti esperti",
   "SELF_SUBTITLE": "Preferisci gestire i tuoi dati? Avvia il tuo server privato in pochi minuti.",
diff --git a/website/locales/ja.json b/website/locales/ja.json
index e534edb..c433551 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "標準的なHTML5ビデオタグへのスクリプトインジェクションを許可するウェブサイトで動作します。非常に厳格なコンテンツセキュリティポリシー（CSP）、DRMコピー保護、または高度に難読化されたプレーヤーラッパー（複雑なシャドウDOMなど）を持つウェブサイトでは、自動制御やインジェクションが制限される場合があります。",
   "STEPS_TITLE": "はじめに",
   "STEP_1_TITLE": "拡張機能をインストール",
-  "STEP_1_DESC": "Chrome ウェブストアや Firefox Add-ons から KoalaSync をブラウザに追加するか、GitHub から最新の開発者向け ZIP をダウンロードしてください。",
+  "STEP_1_DESC": "KoalaSyncをわずか数秒でブラウザに追加できます。Chrome、Firefox、Edge、Brave、およびその他のChromiumブラウザに対応。100%無料でアカウント登録も不要です。",
   "STEP_1_ILLUS_DESC": "プライバシー優先のビデオ同期ツール",
   "STEP_1_ILLUS_DL_CHROME": "Chrome版をダウンロード",
   "STEP_1_ILLUS_DL_FIREFOX": "Firefox版をダウンロード",
   "STEP_1_ILLUS_ACTIVE": "拡張機能はアクティブです",
   "STEP_1_ILLUS_READY": "一緒に観る準備は完了！",
   "STEP_2_TITLE": "ルームを作成",
-  "STEP_2_DESC": "拡張機能のポップアップを開き、「+ 新規ルーム作成」をクリックします。KoalaSyncは自動的に安全なルームIDとパスワードを生成し、接続し、招待リンクをクリップボードにコピーします。",
+  "STEP_2_DESC": "拡張機能を開いて「+ 新規ルーム作成」をクリックします。KoalaSyncは即座に安全で暗号化されたセッションを確立し、招待リンクをコピーします。",
   "STEP_2_ILLUS_ROOM": "ルーム",
   "STEP_2_ILLUS_SYNC": "同期",
   "STEP_2_ILLUS_SETTINGS": "設定",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "手動接続 / 詳細設定",
   "STEP_2_ILLUS_COPIED": "招待リンクをコピーしました！",
   "STEP_3_TITLE": "共有と同期",
-  "STEP_3_DESC": "招待リンクを友達に送信します。友達が参加したら、ビデオのタブを選択して、同期された再生を楽しんでください。",
+  "STEP_3_DESC": "友達にリンクを送信します。登録不要で、ワンクリックで参加できます。お好みの動画を選んで、完璧なリアルタイム同期でお楽しみください。",
   "STEP_3_ILLUS_IN_SYNC": "同期中",
   "SELF_TITLE": "セルフホストする方向け",
   "SELF_SUBTITLE": "公式サーバーを信頼しませんか？データの完全な所有権を維持しましょう。数分で独自のプライベートリレーサーバーを構築できます。",
diff --git a/website/locales/ko.json b/website/locales/ko.json
index 12c123c..1d64bae 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "표준 HTML5 비디오 태그에 스크립트 삽입을 허용하는 웹사이트에서 작동합니다. 콘텐츠 보안 정책(CSP)이 매우 엄격하거나, DRM 복사 방지가 적용되었거나, 플레이어 래퍼가 복잡하게 난독화된 웹사이트(예: 복잡한 섀도 DOM)에서는 자동 제어 또는 스크립트 삽입이 제한될 수 있습니다.",
   "STEPS_TITLE": "시작하기",
   "STEP_1_TITLE": "확장 프로그램 설치",
-  "STEP_1_DESC": "Chrome 웹 스토어, Firefox 부가 기능에서 KoalaSync를 브라우저에 추가하거나, GitHub에서 최신 개발자용 ZIP 파일을 다운로드하세요.",
+  "STEP_1_DESC": "몇 초 만에 브라우저에 KoalaSync를 추가하세요. Chrome, Firefox, Edge, Brave 및 기타 Chromium 브라우저에서 작동합니다. 100% 무료이며 계정이 필요 없습니다.",
   "STEP_1_ILLUS_DESC": "개인정보 보호 중심의 비디오 동기화 프로그램",
   "STEP_1_ILLUS_DL_CHROME": "Chrome용 다운로드",
   "STEP_1_ILLUS_DL_FIREFOX": "Firefox용 다운로드",
   "STEP_1_ILLUS_ACTIVE": "확장 프로그램 활성화됨",
   "STEP_1_ILLUS_READY": "함께 시청할 준비가 되었습니다!",
   "STEP_2_TITLE": "방 만들기",
-  "STEP_2_DESC": "확장 프로그램 팝업을 열고 '+ 새 방 만들기'를 클릭하세요. KoalaSync가 안전한 방 ID와 비밀번호를 자동으로 생성하고, 참여한 후 초대 링크를 클립보드에 복사합니다.",
+  "STEP_2_DESC": "확장 프로그램을 열고 '+ 새 방 만들기'를 클릭합니다. KoalaSync가 즉시 안전한 암호화 세션을 시작하고 초대 링크를 복사합니다.",
   "STEP_2_ILLUS_ROOM": "방",
   "STEP_2_ILLUS_SYNC": "동기화",
   "STEP_2_ILLUS_SETTINGS": "설정",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "수동 연결 / 고급",
   "STEP_2_ILLUS_COPIED": "초대 링크가 복사되었습니다!",
   "STEP_3_TITLE": "공유 및 동기화",
-  "STEP_3_DESC": "친구들에게 초대 링크를 보내세요. 친구들이 참여하면 비디오 탭을 선택하고 동기화된 재생을 즐기세요.",
+  "STEP_3_DESC": "친구들에게 링크를 보내세요. 회원가입 없이 클릭 한 번으로 참여할 수 있습니다. 원하는 동영상을 선택하고 완벽한 실시간 동기화로 감상하세요.",
   "STEP_3_ILLUS_IN_SYNC": "동기화됨",
   "SELF_TITLE": "자체 호스팅 사용자를 위한 안내",
   "SELF_SUBTITLE": "공식 서버를 신뢰하기 어려우신가요? 완벽한 데이터 주권을 유지하세요. 몇 분 만에 나만의 개인 릴레이 서버를 구축할 수 있습니다.",
diff --git a/website/locales/nl.json b/website/locales/nl.json
index 8cc23f4..0cecb0c 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Werkt op websites die scriptinjecties in standaard HTML5-videotags toestaan. Websites met een zeer strikt Content Security Policy (CSP), DRM-kopieerbeveiliging of sterk versluierde spelers (zoals complexe shadow-DOM's) kunnen automatische controle of injectie beperken.",
   "STEPS_TITLE": "Aan de slag",
   "STEP_1_TITLE": "Extensie installeren",
-  "STEP_1_DESC": "Voeg KoalaSync toe aan uw browser vanuit de Chrome Web Store, Firefox-add-ons, of download de nieuwste ontwikkelaars-ZIP van GitHub.",
+  "STEP_1_DESC": "Voeg KoalaSync in enkele seconden toe aan je browser. Werkt op Chrome, Firefox, Edge, Brave en andere Chromium-browsers. 100% gratis en zonder account.",
   "STEP_1_ILLUS_DESC": "Privacy-first videosynchronisator",
   "STEP_1_ILLUS_DL_CHROME": "Downloaden voor Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Downloaden voor Firefox",
   "STEP_1_ILLUS_ACTIVE": "Extensie actief",
   "STEP_1_ILLUS_READY": "Klaar om samen te kijken!",
   "STEP_2_TITLE": "Kamer maken",
-  "STEP_2_DESC": "Open de extensie-popup en klik op '+ Nieuwe kamer maken'. KoalaSync genereert automatisch een beveiligde Kamer-ID en Wachtwoord, neemt deel en kopieert de uitnodigingslink naar uw klembord.",
+  "STEP_2_DESC": "Open de extensie en klik op '+ Nieuwe kamer maken'. KoalaSync start direct een beveiligde, versleutelde sessie en kopieert de uitnodigingslink.",
   "STEP_2_ILLUS_ROOM": "Kamer",
   "STEP_2_ILLUS_SYNC": "Sync",
   "STEP_2_ILLUS_SETTINGS": "Instellingen",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Handmatig verbinden / Geavanceerd",
   "STEP_2_ILLUS_COPIED": "Uitnodigingslink gekopieerd!",
   "STEP_3_TITLE": "Delen & Synchroniseren",
-  "STEP_3_DESC": "Stuur de uitnodigingslink naar uw vrienden. Zodra ze deelnemen, selecteert u uw videotabblad en geniet u van gesynchroniseerd afspelen.",
+  "STEP_3_DESC": "Stuur de link naar je vrienden. Ze nemen deel met één klik — geen registratie vereist. Kies een video en geniet in perfecte realtime synchronisatie.",
   "STEP_3_ILLUS_IN_SYNC": "IN SYNC",
   "SELF_TITLE": "Voor zelf-hosters",
   "SELF_SUBTITLE": "Vertrouwt u onze server niet? Behoud de volledige soevereiniteit over uw gegevens. Implementeer uw eigen privé-relayserver in enkele minuten.",
diff --git a/website/locales/pl.json b/website/locales/pl.json
index f651f19..a0a0ebe 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Działa na stronach zezwalających na wstrzykiwanie skryptów do standardowych tagów wideo HTML5. Strony z bardzo rygorystycznymi zasadami bezpieczeństwa (CSP), zabezpieczeniami DRM (kopiowanie) lub mocno zaciemnionymi odtwarzaczami (jak złożone systemy shadow DOM) mogą ograniczać zdalne sterowanie.",
   "STEPS_TITLE": "Jak zacząć",
   "STEP_1_TITLE": "Zainstaluj rozszerzenie",
-  "STEP_1_DESC": "Dodaj KoalaSync do swojej przeglądarki z Chrome Web Store, Firefox Add-ons lub pobierz najnowsze archiwum ZIP dla deweloperów z GitHub.",
+  "STEP_1_DESC": "Dodaj KoalaSync do przeglądarki w kilka sekund. Działa w Chrome, Firefox, Edge, Brave i innych przeglądarkach Chromium. W 100% darmowy i bez konta.",
   "STEP_1_ILLUS_DESC": "Synchronizator wideo dbający o prywatność",
   "STEP_1_ILLUS_DL_CHROME": "Pobierz dla Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Pobierz dla Firefox",
   "STEP_1_ILLUS_ACTIVE": "Rozszerzenie aktywne",
   "STEP_1_ILLUS_READY": "Gotowe do wspólnego oglądania!",
   "STEP_2_TITLE": "Utwórz pokój",
-  "STEP_2_DESC": "Otwórz okienko rozszerzenia i kliknij '+ Utwórz nowy pokój'. KoalaSync automatycznie wygeneruje bezpieczny ID pokoju oraz hasło, dołączy do niego i skopiuje link zaproszenia do schowka.",
+  "STEP_2_DESC": "Otwórz rozszerzenie i kliknij '+ Utwórz nowy pokój'. KoalaSync natychmiast nawiąże bezpieczną, szyfrowaną sesję i skopiuje link z zaproszeniem.",
   "STEP_2_ILLUS_ROOM": "Pokój",
   "STEP_2_ILLUS_SYNC": "Sync",
   "STEP_2_ILLUS_SETTINGS": "Ustawienia",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Połączenie ręczne / Zaawansowane",
   "STEP_2_ILLUS_COPIED": "Link zaproszenia skopiowany!",
   "STEP_3_TITLE": "Udostępnij i synchronizuj",
-  "STEP_3_DESC": "Wyślij link zaproszenia znajomym. Gdy dołączą, wybierz kartę z filmem i ciesz się zsynchronizowanym odtwarzaniem.",
+  "STEP_3_DESC": "Wyślij link znajomym. Dołączą jednym kliknięciem — rejestracja nie jest wymagana. Wybierz dowolne wideo i ciesz się idealną synchronizacją w czasie rzeczywistym.",
   "STEP_3_ILLUS_IN_SYNC": "ZSYNCHRONIZOWANO",
   "SELF_TITLE": "Dla hostujących samodzielnie",
   "SELF_SUBTITLE": "Nie ufasz naszemu serwerowi? Zachowaj pełną suwerenność danych. Wdróż własny prywatny serwer w kilka minut.",
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index 5b6c429..a3b15d7 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Funciona em sites que permitem injeção de scripts. Plataformas com DRM estrito podem ter limitações.",
   "STEPS_TITLE": "Como Começar",
   "STEP_1_TITLE": "Instalar a Extensão",
-  "STEP_1_DESC": "Adicione o KoalaSync ao seu navegador (Chrome ou Firefox).",
+  "STEP_1_DESC": "Adicione o KoalaSync ao seu navegador em segundos. Funciona no Chrome, Firefox, Edge, Brave e outros navegadores Chromium. 100% gratuito e sem necessidade de conta.",
   "STEP_1_ILLUS_DESC": "Extensão segura para ver vídeos",
   "STEP_1_ILLUS_DL_CHROME": "Baixar para Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Baixar para Firefox",
   "STEP_1_ILLUS_ACTIVE": "Extensão Ativa",
   "STEP_1_ILLUS_READY": "Pronto!",
   "STEP_2_TITLE": "Criar uma Sala",
-  "STEP_2_DESC": "Abra a extensão e clique em '+ Criar nova sala'. O link de convite é copiado automaticamente.",
+  "STEP_2_DESC": "Abra a extensão e clique em '+ Criar nova sala'. O KoalaSync estabelece instantaneamente uma sessão segura e criptografada e copia o link de convite.",
   "STEP_2_ILLUS_ROOM": "Sala",
   "STEP_2_ILLUS_SYNC": "Sincronia",
   "STEP_2_ILLUS_SETTINGS": "Configurações",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Manual / Avançado",
   "STEP_2_ILLUS_COPIED": "Link copiado!",
   "STEP_3_TITLE": "Compartilhar e Assistir",
-  "STEP_3_DESC": "Envie o link aos amigos. Escolha um vídeo e aproveitem juntos.",
+  "STEP_3_DESC": "Envie o link para os seus amigos. Eles entram com um único clique — sem necessidade de cadastro. Escolha qualquer vídeo e divirta-se em sincronização perfeita em tempo real.",
   "STEP_3_ILLUS_IN_SYNC": "SINCRONIZADOS",
   "SELF_TITLE": "Para usuários avançados",
   "SELF_SUBTITLE": "Prefere gerenciar seus próprios dados? Inicie seu próprio servidor em minutos com Docker.",
diff --git a/website/locales/pt.json b/website/locales/pt.json
index e435a86..eaaed57 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Funciona em websites que permitem a injeção de scripts. Plataformas com DRM estrito podem ter limitações.",
   "STEPS_TITLE": "Como Começar",
   "STEP_1_TITLE": "Instalar a Extensão",
-  "STEP_1_DESC": "Adicione o KoalaSync ao seu navegador (Chrome ou Firefox).",
+  "STEP_1_DESC": "Adicione o KoalaSync ao seu navegador em segundos. Funciona no Chrome, Firefox, Edge, Brave e outros navegadores Chromium. 100% gratuito e sem necessidade de conta.",
   "STEP_1_ILLUS_DESC": "Extensão segura para ver vídeos",
   "STEP_1_ILLUS_DL_CHROME": "Descarregar para Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Descarregar para Firefox",
   "STEP_1_ILLUS_ACTIVE": "Extensão Ativa",
   "STEP_1_ILLUS_READY": "Pronto!",
   "STEP_2_TITLE": "Criar uma Sala",
-  "STEP_2_DESC": "Abra a extensão e clique em '+ Criar Nova Sala'. O link de convite é copiado automaticamente.",
+  "STEP_2_DESC": "Abra a extensão e clique em '+ Criar nova sala'. O KoalaSync estabelece instantaneamente uma sessão segura e encriptada e copia o link de convite.",
   "STEP_2_ILLUS_ROOM": "Sala",
   "STEP_2_ILLUS_SYNC": "Sincronia",
   "STEP_2_ILLUS_SETTINGS": "Definições",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Manual / Avançado",
   "STEP_2_ILLUS_COPIED": "Link copiado!",
   "STEP_3_TITLE": "Partilhar e Sincronizar",
-  "STEP_3_DESC": "Envie o link aos amigos. Escolha um vídeo e desfrutem da reprodução juntos.",
+  "STEP_3_DESC": "Envie o link para os seus amigos. Eles entram com um único clique — sem necessidade de registo. Escolha qualquer vídeo e desfrute em sincronização perfeita em tempo real.",
   "STEP_3_ILLUS_IN_SYNC": "SINCRONIZADOS",
   "SELF_TITLE": "Para utilizadores avançados",
   "SELF_SUBTITLE": "Prefere gerir os seus dados? Inicie o seu próprio servidor em minutos com Docker.",
diff --git a/website/locales/ru.json b/website/locales/ru.json
index 70b1919..27ed3fd 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Работает на сайтах, разрешающих инъекцию скриптов в стандартные видеотеги HTML5. Сайты с очень строгой политикой безопасности контента (CSP), защитой от копирования DRM или сильно обфусцированными оболочками плееров (например, сложные теневые DOM) могут блокировать автоматическое управление.",
   "STEPS_TITLE": "С чего начать",
   "STEP_1_TITLE": "Установить расширение",
-  "STEP_1_DESC": "Добавьте KoalaSync в браузер из Chrome Web Store, Firefox Add-ons or скачайте последний ZIP-архив разработчика с GitHub.",
+  "STEP_1_DESC": "Добавьте KoalaSync в браузер за секунды. Работает в Chrome, Firefox, Edge, Brave и других браузерах на базе Chromium. 100% бесплатно и без создания аккаунта.",
   "STEP_1_ILLUS_DESC": "Ориентированный на конфиденциальность синхронизатор видео",
   "STEP_1_ILLUS_DL_CHROME": "Скачать для Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Скачать для Firefox",
   "STEP_1_ILLUS_ACTIVE": "Расширение активно",
   "STEP_1_ILLUS_READY": "Готовы смотреть вместе!",
   "STEP_2_TITLE": "Создать комнату",
-  "STEP_2_DESC": "Откройте меню расширения и нажмите «+ Создать новую комнату». KoalaSync автоматически сгенерирует ID и пароль, войдет в нее и скопирует ссылку-приглашение.",
+  "STEP_2_DESC": "Откройте расширение и нажмите '+ Создать комнату'. KoalaSync мгновенно установит безопасный, зашифрованный сеанс и скопирует ссылку-приглашение.",
   "STEP_2_ILLUS_ROOM": "Комната",
   "STEP_2_ILLUS_SYNC": "Синхро",
   "STEP_2_ILLUS_SETTINGS": "Опции",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Ручное подключение / Дополнительно",
   "STEP_2_ILLUS_COPIED": "Ссылка скопирована!",
   "STEP_3_TITLE": "Поделиться и смотреть",
-  "STEP_3_DESC": "Отправьте ссылку друзьям. Как только они присоединятся, выберите вкладку с видео и наслаждайтесь синхронным просмотром.",
+  "STEP_3_DESC": "Отправьте ссылку друзьям. Они присоединятся одним кликом — регистрация не требуется. Выберите любое видео и смотрите в идеальной синхронизации в реальном времени.",
   "STEP_3_ILLUS_IN_SYNC": "В СИНХРОНЕ",
   "SELF_TITLE": "Для селф-хостеров",
   "SELF_SUBTITLE": "Не доверяете нашему серверу? Сохраняйте полный контроль над данными. Разверните собственный приватный сервер за пару минут.",
diff --git a/website/locales/tr.json b/website/locales/tr.json
index 7e2a5ca..759cd67 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Standart HTML5 video etiketlerine komut dosyası eklenmesine izin veren web sitelerinde çalışır. Çok katı İçerik Güvenliği Politikalarına (CSP) sahip, DRM kopya korumalı veya yoğun şekilde gizlenmiş oynatıcı sarmalayıcıları (karmaşık gölge DOM'lar gibi) olan web siteleri otomatik kontrolü veya enjeksiyonu kısıtlayabilir.",
   "STEPS_TITLE": "Başlarken",
   "STEP_1_TITLE": "Eklentiyi Kur",
-  "STEP_1_DESC": "KoalaSync'i Chrome Web Mağazası, Firefox Eklentileri aracılığıyla tarayıcınıza ekleyin veya en son geliştirici ZIP dosyasını GitHub'dan indirin.",
+  "STEP_1_DESC": "KoalaSync'i tarayıcınıza saniyeler içinde ekleyin. Chrome, Firefox, Edge, Brave ve diğer Chromium tarayıcılarda çalışır. %100 ücretsizdir ve hesap gerektirmez.",
   "STEP_1_ILLUS_DESC": "Gizlilik öncelikli video senkronize edici",
   "STEP_1_ILLUS_DL_CHROME": "Chrome için İndir",
   "STEP_1_ILLUS_DL_FIREFOX": "Firefox için İndir",
   "STEP_1_ILLUS_ACTIVE": "Eklenti Etkin",
   "STEP_1_ILLUS_READY": "Birlikte izlemeye hazır!",
   "STEP_2_TITLE": "Oda Oluştur",
-  "STEP_2_DESC": "Eklenti açılır penceresini açın ve '+ Yeni Oda Oluştur' düğmesine tıklayın. KoalaSync otomatik olarak güvenli bir Oda Kimliği ve Şifresi oluşturur, odaya katılır ve davet bağlantısını panonuza kopyalar.",
+  "STEP_2_DESC": "Uzantıyı açın ve '+ Yeni Oda Oluştur'a tıklayın. KoalaSync anında güvenli ve şifreli bir oturum kurar ve davet bağlantısını kopyalar.",
   "STEP_2_ILLUS_ROOM": "Oda",
   "STEP_2_ILLUS_SYNC": "Senkronizasyon",
   "STEP_2_ILLUS_SETTINGS": "Ayarlar",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Manuel Bağlantı / Gelişmiş",
   "STEP_2_ILLUS_COPIED": "Davet bağlantısı kopyalandı!",
   "STEP_3_TITLE": "Paylaş ve Eşitle",
-  "STEP_3_DESC": "Davet bağlantısını arkadaşlarınıza gönderin. Katıldıklarında video sekmenizi seçin ve senkronize oynatmanın keyfini çıkarın.",
+  "STEP_3_DESC": "Bağlantıyı arkadaşlarınıza gönderin. Tek bir tıklamayla katılırlar — kayıt gerekmez. Herhangi bir videoyu seçin ve gerçek zamanlı mükemmel senkronizasyonun tadını çıkarın.",
   "STEP_3_ILLUS_IN_SYNC": "EŞİTLENDİ",
   "SELF_TITLE": "Kendi Kendine Barındıranlar İçin",
   "SELF_SUBTITLE": "Sunucumuza güvenmiyor musunuz? Veri egemenliğinizi koruyun. Kendi özel aktarım sunucunuzu dakikalar içinde devreye alın.",
diff --git a/website/locales/uk.json b/website/locales/uk.json
index b5d50a1..eae1375 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "Працює на веб-сайтах, які дозволяють ін’єкції сценаріїв у стандартні відеотеги HTML5. Веб-сайти з дуже суворими політиками безпеки вмісту (CSP), захистом від копіювання DRM або сильно затуманеними оболонками програвачів (як-от складні тіньові DOM) можуть обмежувати автоматизований контроль або впровадження.",
   "STEPS_TITLE": "Початок роботи",
   "STEP_1_TITLE": "Встановити розширення",
-  "STEP_1_DESC": "Додайте KoalaSync до свого браузера з веб-магазину Chrome, доповнень Firefox або завантажте найновіший розробник ZIP із GitHub.",
+  "STEP_1_DESC": "Додайте KoalaSync до свого браузера за кілька секунд. Працює в Chrome, Firefox, Edge, Brave та інших браузерах Chromium. 100% безкоштовно та без реєстрації.",
   "STEP_1_ILLUS_DESC": "Синхронізатор відео насамперед із конфіденційністю",
   "STEP_1_ILLUS_DL_CHROME": "Завантажити для Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "Завантажити для Firefox",
   "STEP_1_ILLUS_ACTIVE": "Розширення активне",
   "STEP_1_ILLUS_READY": "Готові дивитися разом!",
   "STEP_2_TITLE": "Створіть кімнату",
-  "STEP_2_DESC": "Відкрийте спливаюче вікно розширення та натисніть «+ Створити нову кімнату». KoalaSync автоматично генерує безпечний Room ID і пароль, приєднується до нього та копіює посилання для запрошення в буфер обміну.",
+  "STEP_2_DESC": "Відкрийте розширення та натисніть '+ Створити кімнату'. KoalaSync миттєво встановить безпечний, зашифрований сеанс і скопіює посилання-запрошення.",
   "STEP_2_ILLUS_ROOM": "Кімната",
   "STEP_2_ILLUS_SYNC": "Синхронізувати",
   "STEP_2_ILLUS_SETTINGS": "Налаштування",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "Ручне підключення / Додатково",
   "STEP_2_ILLUS_COPIED": "Посилання на запрошення скопійовано!",
   "STEP_3_TITLE": "Поділитися та синхронізувати",
-  "STEP_3_DESC": "Надішліть запрошення своїм друзям. Коли вони приєднаються, виберіть вкладку відео та насолоджуйтеся синхронізованим відтворенням.",
+  "STEP_3_DESC": "Надішліть посилання друзям. Вони приєднаються одним кліком — без реєстрації. Виберіть будь-яке відео та насолоджуйтеся синхронізацією в реальному часі.",
   "STEP_3_ILLUS_IN_SYNC": "СИНХРОНІЗОВАНО",
   "SELF_TITLE": "Для самостійних господарів",
   "SELF_SUBTITLE": "Не довіряєте нашому серверу? Підтримуйте повний суверенітет даних. Розгорніть власний приватний сервер ретрансляції за лічені хвилини.",
diff --git a/website/locales/zh.json b/website/locales/zh.json
index 89f91b0..b6ff73b 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -95,14 +95,14 @@
   "COMP_FOOTNOTE_4": "适用于允许将脚本注入标准 HTML5 视频标签的网站。具有高度严格的内容安全策略 (CSP)、DRM 复制保护或严重混淆的播放器包装器（如复杂的影子 DOM）的网站可能会限制自动控制或注入。",
   "STEPS_TITLE": "入门",
   "STEP_1_TITLE": "安装扩展",
-  "STEP_1_DESC": "从 Chrome Web Store、Firefox 附加组件将 KoalaSync 添加到您的浏览器，或从 GitHub 下载最新的开发人员 ZIP。",
+  "STEP_1_DESC": "数秒内将 KoalaSync 添加到您的浏览器。适用于 Chrome、Firefox、Edge、Brave 及其他 Chromium 浏览器。100% 免费且无需注册账号。",
   "STEP_1_ILLUS_DESC": "隐私第一的视频同步器",
   "STEP_1_ILLUS_DL_CHROME": "下载 Chrome",
   "STEP_1_ILLUS_DL_FIREFOX": "下载 Firefox",
   "STEP_1_ILLUS_ACTIVE": "分机激活",
   "STEP_1_ILLUS_READY": "准备好一起观看吧！",
   "STEP_2_TITLE": "创建房间",
-  "STEP_2_DESC": "打开扩展弹出窗口并单击“+ 创建新房间”。 KoalaSync 自动生成安全的 Room ID 和密码，加入它，并将邀请链接复制到剪贴板。",
+  "STEP_2_DESC": "打开插件并点击“+ 新建房间”。KoalaSync 会立即建立安全加密的会话，并自动复制邀请链接。",
   "STEP_2_ILLUS_ROOM": "房间",
   "STEP_2_ILLUS_SYNC": "同步",
   "STEP_2_ILLUS_SETTINGS": "设置",
@@ -110,7 +110,7 @@
   "STEP_2_ILLUS_MANUAL": "手动连接/高级",
   "STEP_2_ILLUS_COPIED": "邀请链接已复制！",
   "STEP_3_TITLE": "分享与同步",
-  "STEP_3_DESC": "将邀请链接发送给您的朋友。他们加入后，选择您的视频选项卡并享受同步播放。",
+  "STEP_3_DESC": "将链接发送给好友。他们只需点击一下即可加入——无需注册。选择任意视频，享受完美的实时同步。",
   "STEP_3_ILLUS_IN_SYNC": "同步",
   "SELF_TITLE": "对于自托管者",
   "SELF_SUBTITLE": "不信任我们的服务器？维护完整的数据主权。只需几分钟即可部署您自己的私有中继服务器。",
diff --git a/website/style.css b/website/style.css
index e0e2374..ae66e32 100644
--- a/website/style.css
+++ b/website/style.css
@@ -1042,13 +1042,13 @@ input:checked + .mock-slider:before {
 .steps {
     display: flex;
     flex-direction: column;
-    gap: 6rem;
+    gap: 8rem;
 }
 
 .step {
     display: grid;
-    grid-template-columns: 1fr 1.1fr;
-    gap: 6rem;
+    grid-template-columns: 1fr 1fr;
+    gap: 5rem;
     align-items: center;
 }
 
@@ -1057,37 +1057,43 @@ input:checked + .mock-slider:before {
 }
 
 .step-num {
-    font-size: 4rem;
-    font-weight: 800;
-    color: rgba(99, 102, 241, 0.15);
+    font-size: 5rem;
+    font-weight: 900;
+    background: linear-gradient(135deg, rgba(99, 102, 241, 0.5), rgba(168, 85, 247, 0.15));
+    -webkit-background-clip: text;
+    -webkit-text-fill-color: transparent;
     line-height: 1;
-    margin-bottom: 0.5rem;
+    margin-bottom: 0.75rem;
+    font-family: inherit;
+    letter-spacing: -2px;
 }
 
 .step-text h3 {
-    font-size: 1.85rem;
-    margin-bottom: 1rem;
-    font-weight: 800;
+    font-size: 2.1rem;
+    margin-bottom: 1.1rem;
+    font-weight: 850;
+    color: white;
+    letter-spacing: -0.5px;
 }
 
 .step-text p {
-    color: var(--text-muted);
-    font-size: 1.05rem;
-    line-height: 1.6;
+    color: #94a3b8;
+    font-size: 1.1rem;
+    line-height: 1.75;
 }
 
 /* Custom CSS Mockups for step illustrations */
 .step-illustration-1, .step-illustration-2, .step-illustration-3 {
-    background: radial-gradient(circle at top left, #1e293b, #0f172a);
-    height: 280px; /* Slightly taller for more detail and breathing room */
+    background: radial-gradient(circle at 10% 10%, #1e1b4b, #030712);
+    height: 300px; /* Slightly taller for more detail and breathing room */
     border-radius: 24px;
-    border: 1px solid var(--glass-border);
+    border: 1px solid rgba(255, 255, 255, 0.06);
     position: relative;
     overflow: hidden;
     display: flex;
     align-items: center;
     justify-content: center;
-    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.05);
+    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.05);
     transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
 }
 
@@ -1103,21 +1109,23 @@ input:checked + .mock-slider:before {
 .illus-browser-container {
     width: 90%;
     height: 80%;
-    background: #090d16;
-    border: 1px solid rgba(255, 255, 255, 0.05);
+    background: #050811;
+    border: 1px solid rgba(255, 255, 255, 0.06);
     border-radius: 12px;
     overflow: hidden;
-    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
+    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
     display: flex;
     flex-direction: column;
 }
 
 .illus-browser-header {
-    background: #131924;
+    background: rgba(15, 23, 42, 0.8);
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
     padding: 0.6rem 0.8rem;
     display: flex;
     align-items: center;
-    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
+    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
 }
 
 .illus-browser-dots {
@@ -1313,13 +1321,13 @@ input:checked + .mock-slider:before {
     top: 0.6rem;
     right: 0.6rem;
     width: 145px;
-    background: rgba(30, 41, 59, 0.75);
-    backdrop-filter: blur(10px);
-    -webkit-backdrop-filter: blur(10px);
-    border: 1px solid rgba(255, 255, 255, 0.12);
+    background: rgba(15, 23, 42, 0.85);
+    backdrop-filter: blur(12px);
+    -webkit-backdrop-filter: blur(12px);
+    border: 1px solid rgba(99, 102, 241, 0.25);
     border-radius: 12px;
     padding: 0.6rem 0.8rem;
-    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
+    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.55), 0 0 15px rgba(99, 102, 241, 0.15);
     animation: popup-float 4s ease-in-out infinite;
     z-index: 5;
 }
@@ -1381,17 +1389,17 @@ input:checked + .mock-slider:before {
    Step 2 Illustration: Highly Realistic Extension Popup (Create Room View)
    ========================================================================== */
 .illus-popup-card {
-    width: 220px; /* Scaled up 16% for a bigger, much more detailed view */
-    background: rgba(30, 41, 59, 0.75);
-    backdrop-filter: blur(12px);
-    -webkit-backdrop-filter: blur(12px);
-    border: 1px solid rgba(255, 255, 255, 0.08);
+    width: 220px;
+    background: rgba(15, 23, 42, 0.85);
+    backdrop-filter: blur(16px);
+    -webkit-backdrop-filter: blur(16px);
+    border: 1px solid rgba(255, 255, 255, 0.12);
     border-radius: 16px;
-    padding: 0.95rem; /* Slightly larger padding */
-    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
+    padding: 0.95rem;
+    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
     display: flex;
     flex-direction: column;
-    gap: 0.75rem; /* Tighter vertical layout rhythm */
+    gap: 0.75rem;
     animation: popup-float 4s ease-in-out infinite;
     animation-delay: -1s;
 }
@@ -1556,11 +1564,13 @@ input:checked + .mock-slider:before {
 
 .illus-player-card {
     width: 145px;
-    background: rgba(15, 23, 42, 0.7);
-    border: 1px solid rgba(255, 255, 255, 0.05);
+    background: rgba(15, 23, 42, 0.85);
+    backdrop-filter: blur(12px);
+    -webkit-backdrop-filter: blur(12px);
+    border: 1px solid rgba(255, 255, 255, 0.08);
     border-radius: 12px;
     padding: 6px;
-    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
+    box-shadow: 0 12px 30px rgba(0,0,0,0.5);
     display: flex;
     flex-direction: column;
     gap: 4px;
@@ -1618,7 +1628,14 @@ input:checked + .mock-slider:before {
 .player-video-overlay {
     position: absolute;
     top: 0; left: 0; width: 100%; height: 100%;
-    background: radial-gradient(circle at center, rgba(139, 92, 246, 0.1) 0%, transparent 80%);
+    background: linear-gradient(to bottom, transparent, rgba(99, 102, 241, 0.15), transparent);
+    background-size: 100% 200%;
+    animation: playerScrollScanline 3s linear infinite;
+}
+
+@keyframes playerScrollScanline {
+    0% { background-position: 0% 0%; }
+    100% { background-position: 0% 200%; }
 }
 
 .player-play-pulse {

From 82b90d86a92ecdb10124b7a1bd3fa18fe7373880 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:07:03 +0200
Subject: [PATCH 132/151] website: Rename mockup usernames to ChillCat and
 HappyDog across HTML, JS, and all 15 locales

---
 website/app.js             |  4 ++--
 website/locales/de.json    |  2 +-
 website/locales/en.json    |  2 +-
 website/locales/es.json    |  2 +-
 website/locales/fr.json    |  2 +-
 website/locales/it.json    |  2 +-
 website/locales/ja.json    |  2 +-
 website/locales/ko.json    |  2 +-
 website/locales/nl.json    |  2 +-
 website/locales/pl.json    |  2 +-
 website/locales/pt-BR.json |  2 +-
 website/locales/pt.json    |  2 +-
 website/locales/ru.json    |  2 +-
 website/locales/tr.json    |  2 +-
 website/locales/uk.json    |  2 +-
 website/locales/zh.json    |  2 +-
 website/template.html      | 30 +++++++++++++++---------------
 17 files changed, 32 insertions(+), 32 deletions(-)

diff --git a/website/app.js b/website/app.js
index 14d6c21..e58f3d1 100644
--- a/website/app.js
+++ b/website/app.js
@@ -525,7 +525,7 @@ document.addEventListener('DOMContentLoaded', () => {
             });
         };
 
-        const NAMES = { a: 'CoolUsername', b: 'KoalaPC' };
+        const NAMES = { a: '🐱 ChillCat', b: '🐶 HappyDog' };
         const chipEvent = chip.querySelector('.demo-chip-event');
 
         let eventTimer = null;
@@ -602,7 +602,7 @@ document.addEventListener('DOMContentLoaded', () => {
         // Manual controls (the automated walkthrough drives these same handlers)
         launcher.addEventListener('click', () => setPopupOpen(!scene.classList.contains('popup-open')));
 
-        // The popup remote control acts as CoolUsername (tab A's user)
+        // The popup remote control acts as 🐱 ChillCat (tab A's user)
         playBtn.addEventListener('click', () => {
             if (tabs.a.playing && tabs.b.playing) { pulse(); return; }
             broadcast('a', true);
diff --git a/website/locales/de.json b/website/locales/de.json
index 70bc428..550051f 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Zu anderen springen",
   "MOCK_15": "Letzte Aktivität",
-  "MOCK_16": "Warten auf 1 Partner (KoalaPC)...",
+  "MOCK_16": "Warten auf 1 Partner (🐶 HappyDog)...",
   "MOCK_17": "Überspringen & abspielen",
   "MOCK_18": "Dein Benutzername",
   "MOCK_19": "Noise-Filterung",
diff --git a/website/locales/en.json b/website/locales/en.json
index b25ab7c..e0c2dbd 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Jump to Others",
   "MOCK_15": "Last Activity Status",
-  "MOCK_16": "Waiting for 1 peer (KoalaPC)...",
+  "MOCK_16": "Waiting for 1 peer (🐶 HappyDog)...",
   "MOCK_17": "Skip & Play anyway",
   "MOCK_18": "Your Username",
   "MOCK_19": "Hide Clutter Tabs",
diff --git a/website/locales/es.json b/website/locales/es.json
index e2f7afc..4a74f9c 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SINCRO",
   "MOCK_14": "Ir a la posición de otros",
   "MOCK_15": "Estado de la última actividad",
-  "MOCK_16": "Esperando a 1 participante (KoalaPC)...",
+  "MOCK_16": "Esperando a 1 participante (🐶 HappyDog)...",
   "MOCK_17": "Omitir y reproducir ya",
   "MOCK_18": "Tu nombre de usuario",
   "MOCK_19": "Ocultar pestañas sin video",
diff --git a/website/locales/fr.json b/website/locales/fr.json
index 69ee91a..53dafba 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -164,7 +164,7 @@
   "MOCK_12": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><rect x=\"6\" y=\"4\" width=\"4\" height=\"16\"/><rect x=\"14\" y=\"4\" width=\"4\" height=\"16\"/></svg> Pause",
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Dernière activité",
-  "MOCK_15": "En attente de 1 participant (KoalaPC)...",
+  "MOCK_15": "En attente de 1 participant (🐶 HappyDog)...",
   "MOCK_16": "Passer & lire",
   "MOCK_17": "Votre pseudo",
   "MOCK_18": "Masquer les onglets inutiles",
diff --git a/website/locales/it.json b/website/locales/it.json
index 818c39b..8076ff3 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Vai dagli altri",
   "MOCK_15": "Ultima attività",
-  "MOCK_16": "In attesa di un amico (KoalaPC)...",
+  "MOCK_16": "In attesa di un amico (🐶 HappyDog)...",
   "MOCK_17": "Salta l'attesa",
   "MOCK_18": "Tuo Nome",
   "MOCK_19": "Nascondi schede",
diff --git a/website/locales/ja.json b/website/locales/ja.json
index c433551..09a4b4a 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "他の人に合わせる",
   "MOCK_15": "最新のアクティビティ状況",
-  "MOCK_16": "1人のメンバー (KoalaPC) を待機中...",
+  "MOCK_16": "1人のメンバー (🐶 HappyDog) を待機中...",
   "MOCK_17": "スキップして再生",
   "MOCK_18": "ユーザー名",
   "MOCK_19": "不要なタブを非表示",
diff --git a/website/locales/ko.json b/website/locales/ko.json
index 1d64bae..53b82c3 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "다른 사람에게 이동",
   "MOCK_15": "최근 활동 상태",
-  "MOCK_16": "참여자 1명 (KoalaPC) 대기 중...",
+  "MOCK_16": "참여자 1명 (🐶 HappyDog) 대기 중...",
   "MOCK_17": "건너뛰고 재생",
   "MOCK_18": "사용자 이름",
   "MOCK_19": "복잡한 탭 숨기기",
diff --git a/website/locales/nl.json b/website/locales/nl.json
index 0cecb0c..fc1e2d3 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Spring naar anderen",
   "MOCK_15": "Laatste activiteitsstatus",
-  "MOCK_16": "Wachten op 1 deelnemer (KoalaPC)...",
+  "MOCK_16": "Wachten op 1 deelnemer (🐶 HappyDog)...",
   "MOCK_17": "Overslaan & toch afspelen",
   "MOCK_18": "Uw gebruikersnaam",
   "MOCK_19": "Overbodige tabbladen verbergen",
diff --git a/website/locales/pl.json b/website/locales/pl.json
index a0a0ebe..4814380 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Skocz do innych",
   "MOCK_15": "Status ostatniej aktywności",
-  "MOCK_16": "Oczekiwanie na 1 uczestnika (KoalaPC)...",
+  "MOCK_16": "Oczekiwanie na 1 uczestnika (🐶 HappyDog)...",
   "MOCK_17": "Pomiń i odtwórz mimo to",
   "MOCK_18": "Twoja nazwa użytkownika",
   "MOCK_19": "Ukryj zbędne karty",
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index a3b15d7..7115d2e 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SINCRO",
   "MOCK_14": "Ir para a posição dos outros",
   "MOCK_15": "Última Atividade",
-  "MOCK_16": "Aguardando 1 amigo (KoalaPC)...",
+  "MOCK_16": "Aguardando 1 amigo (🐶 HappyDog)...",
   "MOCK_17": "Pular e reproduzir agora",
   "MOCK_18": "Seu Nome",
   "MOCK_19": "Ocultar abas sem vídeo",
diff --git a/website/locales/pt.json b/website/locales/pt.json
index eaaed57..5abbfc1 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SINCRO",
   "MOCK_14": "Ir para a posição dos outros",
   "MOCK_15": "Última Atividade",
-  "MOCK_16": "À espera de 1 amigo (KoalaPC)...",
+  "MOCK_16": "À espera de 1 amigo (🐶 HappyDog)...",
   "MOCK_17": "Ignorar e reproduzir agora",
   "MOCK_18": "O seu Nome",
   "MOCK_19": "Ocultar separadores sem vídeo",
diff --git a/website/locales/ru.json b/website/locales/ru.json
index 27ed3fd..95cef17 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -164,7 +164,7 @@
   "MOCK_12": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"14\" height=\"14\" aria-hidden=\"true\"><rect x=\"6\" y=\"4\" width=\"4\" height=\"16\"/><rect x=\"14\" y=\"4\" width=\"4\" height=\"16\"/></svg> Пауза",
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Последняя активность",
-  "MOCK_15": "Ожидание 1 участника (KoalaPC)...",
+  "MOCK_15": "Ожидание 1 участника (🐶 HappyDog)...",
   "MOCK_16": "Пропустить и играть",
   "MOCK_17": "Ваше имя",
   "MOCK_18": "Скрыть лишние вкладки",
diff --git a/website/locales/tr.json b/website/locales/tr.json
index 759cd67..072d0bd 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> SYNC",
   "MOCK_14": "Diğerlerine Atla",
   "MOCK_15": "Son Etkinlik Durumu",
-  "MOCK_16": "1 bağlantı bekleniyor (KoalaPC)...",
+  "MOCK_16": "1 bağlantı bekleniyor (🐶 HappyDog)...",
   "MOCK_17": "Atla ve Yine de Oynat",
   "MOCK_18": "Kullanıcı Adınız",
   "MOCK_19": "Gereksiz Sekmeleri Gizle",
diff --git a/website/locales/uk.json b/website/locales/uk.json
index eae1375..892cb22 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> СИНХ",
   "MOCK_14": "Перейти до інших",
   "MOCK_15": "Статус останньої дії",
-  "MOCK_16": "Очікування 1 партнера (KoalaPC)...",
+  "MOCK_16": "Очікування 1 партнера (🐶 HappyDog)...",
   "MOCK_17": "Все одно пропустіть і грайте",
   "MOCK_18": "Ваше ім'я користувача",
   "MOCK_19": "Приховати безладні вкладки",
diff --git a/website/locales/zh.json b/website/locales/zh.json
index b6ff73b..e0e3523 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -165,7 +165,7 @@
   "MOCK_13": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" width=\"14\" height=\"14\" aria-hidden=\"true\"><polygon points=\"13 2 3 14 12 14 11 22 21 10 12 10 13 2\"/></svg> 同步",
   "MOCK_14": "跳转到其他",
   "MOCK_15": "上次活动状态",
-  "MOCK_16": "正在等待 1 个同伴 (KoalaPC)...",
+  "MOCK_16": "正在等待 1 个同伴 (🐶 HappyDog)...",
   "MOCK_17": "仍然跳过并播放",
   "MOCK_18": "您的用户名",
   "MOCK_19": "隐藏杂乱标签",
diff --git a/website/template.html b/website/template.html
index b62bc4a..38ec369 100644
--- a/website/template.html
+++ b/website/template.html
@@ -310,11 +310,11 @@
                         <span class="demo-chip-event"></span>
                     </button>
 
-                    <div class="demo-tab-card demo-tab-a" id="demo-tab-a" role="button" tabindex="0" aria-pressed="false" aria-label="Press play or pause as CoolUsername — KoalaSync mirrors it to the other tab" title="Press play/pause here — KoalaSync mirrors it to the other tab">
+                    <div class="demo-tab-card demo-tab-a" id="demo-tab-a" role="button" tabindex="0" aria-pressed="false" aria-label="Press play or pause as 🐱 ChillCat — KoalaSync mirrors it to the other tab" title="Press play/pause here — KoalaSync mirrors it to the other tab">
                         <div class="demo-tab-titlebar">
                             <span class="demo-tab-dots" aria-hidden="true"><i></i><i></i><i></i></span>
                             <span class="demo-tab-title"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="11" height="11" aria-hidden="true"><rect x="2" y="3" width="20" height="14" rx="2"/><path d="M8 21h8M12 17v4"/></svg> Stranger Things - S4E1</span>
-                            <span class="demo-tab-user demo-user-a">CoolUsername</span>
+                            <span class="demo-tab-user demo-user-a">🐱 ChillCat</span>
                             <button class="demo-ext-launcher" id="demo-launcher" type="button" aria-expanded="true" title="Open or close the KoalaSync popup">
                                 <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="" width="16" height="16" loading="eager" decoding="async">
                             </button>
@@ -367,11 +367,11 @@
                         </div>
                     </div>
 
-                    <div class="demo-tab-card demo-tab-b" id="demo-tab-b" role="button" tabindex="0" aria-pressed="false" aria-label="Press play or pause as KoalaPC — KoalaSync mirrors it to the other tab" title="Press play/pause here — KoalaSync mirrors it to the other tab">
+                    <div class="demo-tab-card demo-tab-b" id="demo-tab-b" role="button" tabindex="0" aria-pressed="false" aria-label="Press play or pause as 🐶 HappyDog — KoalaSync mirrors it to the other tab" title="Press play/pause here — KoalaSync mirrors it to the other tab">
                         <div class="demo-tab-titlebar">
                             <span class="demo-tab-dots" aria-hidden="true"><i></i><i></i><i></i></span>
                             <span class="demo-tab-title"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="11" height="11" aria-hidden="true"><rect x="2" y="3" width="20" height="14" rx="2"/><path d="M8 21h8M12 17v4"/></svg> Stranger Things - S4E1</span>
-                            <span class="demo-tab-user demo-user-b">KoalaPC</span>
+                            <span class="demo-tab-user demo-user-b">🐶 HappyDog</span>
                         </div>
                         <div class="demo-video">
                             <div class="demo-video-art" aria-hidden="true"></div>
@@ -465,7 +465,7 @@
                                 <div class="mock-peer-list">
                                     <div class="mock-peer-item">
                                         <div class="mock-peer-header">
-                                            <span class="mock-peer-name">CoolUsername</span>
+                                            <span class="mock-peer-name">🐱 ChillCat</span>
                                                 <span class="mock-peer-meta">{{MOCK_05}}</span>
                                         </div>
                                         <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</div>
@@ -473,7 +473,7 @@
                                     </div>
                                     <div class="mock-peer-item demo-peer-b">
                                         <div class="mock-peer-header">
-                                            <span class="mock-peer-name">KoalaPC</span>
+                                            <span class="mock-peer-name">🐶 HappyDog</span>
                                                 <span class="mock-peer-meta">{{MOCK_07}}</span>
                                         </div>
                                         <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</div>
@@ -529,12 +529,12 @@
                             <div class="mock-card" style="margin-bottom: 15px; display: flex; flex-direction: column; gap: 6px;">
                                 <div style="display: flex; justify-content: space-between; align-items: baseline;">
                                     <span style="font-weight: 700; color: #ef4444; font-size: 11px;">PAUSE</span>
-                                    <span style="font-size: 9px; color: var(--text-muted);">CoolUsername @ 12:44:32</span>
+                                    <span style="font-size: 9px; color: var(--text-muted);">🐱 ChillCat @ 12:44:32</span>
                                 </div>
                                 <div style="display: grid; grid-template-columns: repeat(auto-fill, minmax(36px, 1fr)); gap: 5px; margin-top: 4px;">
                                     <div style="display: flex; flex-direction: column; align-items: center;">
                                         <div style="width: 18px; height: 18px; border-radius: 50%; background: var(--success); color: white; display: flex; align-items: center; justify-content: center; font-size: 9px; font-weight: bold; margin-bottom: 1px;"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" width="10" height="10" aria-hidden="true"><polyline points="20 6 9 17 4 12"/></svg></div>
-                                        <span style="font-size: 7px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 36px;">🐨 KoalaPC</span>
+                                        <span style="font-size: 7px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 36px;">🐶 HappyDog</span>
                                     </div>
                                 </div>
                             </div>
@@ -563,7 +563,7 @@
                                 <div class="mock-peer-list">
                                     <div class="mock-peer-item">
                                         <div class="mock-peer-header">
-                                            <span class="mock-peer-name">CoolUsername</span>
+                                            <span class="mock-peer-name">🐱 ChillCat</span>
                                                 <span class="mock-peer-meta">{{MOCK_05}}</span>
                                         </div>
                                         <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</div>
@@ -571,7 +571,7 @@
                                     </div>
                                     <div class="mock-peer-item demo-peer-b">
                                         <div class="mock-peer-header">
-                                            <span class="mock-peer-name">KoalaPC</span>
+                                            <span class="mock-peer-name">🐶 HappyDog</span>
                                                 <span class="mock-peer-meta">{{MOCK_07}}</span>
                                         </div>
                                         <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</div>
@@ -587,7 +587,7 @@
                                 <label style="margin: 0; font-size: 11px; text-transform: uppercase; color: var(--text-muted); font-weight: 700;" title="Username helps others identify you.">
                                     {{MOCK_18}}
                                 </label>
-                                <input type="text" class="mock-input" value="CoolUsername" readonly style="width: 110px; padding: 4px; text-align: right; background: transparent; border: none; color: var(--accent); font-weight: 700;">
+                                <input type="text" class="mock-input" value="🐱 ChillCat" readonly style="width: 110px; padding: 4px; text-align: right; background: transparent; border: none; color: var(--accent); font-weight: 700;">
                             </div>
 
                             <div style="display: flex; align-items: center; justify-content: space-between; background: var(--card); padding: 8px 10px; border-radius: 8px; margin-bottom: 8px; border: 1px solid #334155;">
@@ -673,11 +673,11 @@
                             </label>
                             <div class="mock-card" style="font-size: 0.65rem; color: var(--text-muted); line-height: 1.4; margin-bottom: 12px; max-height: 100px; overflow-y: auto; display: flex; flex-direction: column; gap: 4px;">
                                 <div style="display: flex; justify-content: space-between; border-bottom: 1px solid #334155; padding-bottom: 4px;">
-                                    <span>CoolUsername: PAUSE</span>
+                                    <span>🐱 ChillCat: PAUSE</span>
                                     <span style="opacity: 0.5;">0:55</span>
                                 </div>
                                 <div style="display: flex; justify-content: space-between; padding-top: 2px;">
-                                    <span>KoalaPC: PLAY</span>
+                                    <span>🐶 HappyDog: PLAY</span>
                                     <span style="opacity: 0.5;">0:00</span>
                                 </div>
                             </div>
@@ -1150,10 +1150,10 @@
                     <!-- Custom Step 3 Illustration -->
                     <div class="step-illustration-3" data-reveal>
                         <div class="illus-sync-theater">
-                            <!-- Player A (KoalaPC) -->
+                            <!-- Player A (🐶 HappyDog) -->
                             <div class="illus-player-card player-a">
                                 <div class="player-header">
-                                    <span class="player-user">🐨 KoalaPC</span>
+                                    <span class="player-user">🐶 HappyDog</span>
                                     <span class="player-badge active">PLAYING</span>
                                 </div>
                                 <div class="player-video-canvas">

From 14ab6b2d50124c12bb10dae990b0c7ee5909b2a2 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:09:25 +0200
Subject: [PATCH 133/151] website: Restructure 3-step guide flowchart, swap
 illustrations, and rewrite translations in all 15 locales

---
 website/locales/de.json    | 22 ++++-----
 website/locales/en.json    | 22 ++++-----
 website/locales/es.json    | 22 ++++-----
 website/locales/fr.json    | 22 ++++-----
 website/locales/it.json    | 22 ++++-----
 website/locales/ja.json    | 22 ++++-----
 website/locales/ko.json    | 22 ++++-----
 website/locales/nl.json    | 22 ++++-----
 website/locales/pl.json    | 22 ++++-----
 website/locales/pt-BR.json | 22 ++++-----
 website/locales/pt.json    | 22 ++++-----
 website/locales/ru.json    | 22 ++++-----
 website/locales/tr.json    | 22 ++++-----
 website/locales/uk.json    | 22 ++++-----
 website/locales/zh.json    | 22 ++++-----
 website/template.html      | 92 +++++++++++++++++++-------------------
 16 files changed, 211 insertions(+), 211 deletions(-)

diff --git a/website/locales/de.json b/website/locales/de.json
index 550051f..9185960 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Datenschutzerklärung und Tracker-Erfassung von Teleparty:",
   "COMP_FOOTNOTE_4": "Funktioniert auf allen Seiten, die Skript-Injektionen in Standard-HTML5-Videoplayer erlauben. Seiten mit extrem strengen Content Security Policies (CSP), DRM-Kopierschutz oder stark verschachtelten Player-Wrappern (z. B. komplexe Shadow-DOMs) können die automatische Steuerung blockieren.",
   "STEPS_TITLE": "Erste Schritte",
-  "STEP_1_TITLE": "Erweiterung installieren",
-  "STEP_1_DESC": "Füge KoalaSync in Sekundenschnelle zu deinem Browser hinzu. Unterstützt Chrome, Firefox, Edge, Brave und alle Chromium-Browser. Komplett ohne Anmeldung.",
-  "STEP_1_ILLUS_DESC": "Privatsphäre-fokussierte Video-Synchronisation",
-  "STEP_1_ILLUS_DL_CHROME": "Download für Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Download für Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Erweiterung aktiv",
-  "STEP_1_ILLUS_READY": "Bereit zum Mitschauen!",
-  "STEP_2_TITLE": "Raum erstellen",
-  "STEP_2_DESC": "Ein Klick auf „Neuer Raum“ generiert sofort eine sichere, verschlüsselte Sitzung und kopiert den Einladungslink automatisch in deine Zwischenablage.",
+  "STEP_1_TITLE": "Raum erstellen & teilen",
+  "STEP_1_DESC": "Öffne das Popup der Erweiterung, erstelle einen Raum mit einem Klick und teile den generierten Link mit deinen Freunden. Sie treten über die Einladungsbrücke sofort bei.",
+  "STEP_1_ILLUS_DESC": "Wähle einen Video-Tab",
+  "STEP_1_ILLUS_DL_CHROME": "YouTube-Tab verbinden",
+  "STEP_1_ILLUS_DL_FIREFOX": "Netflix-Tab verbinden",
+  "STEP_1_ILLUS_ACTIVE": "Tab verbunden",
+  "STEP_1_ILLUS_READY": "Bereit für synchrones Schauen!",
+  "STEP_2_TITLE": "Video-Tab auswählen",
+  "STEP_2_DESC": "Klicke auf den Tab deines Videos und wähle im Popup den Tab aus, den du synchronisieren möchtest. KoalaSync übernimmt ab jetzt die automatische Verbindung.",
   "STEP_2_ILLUS_ROOM": "Raum",
   "STEP_2_ILLUS_SYNC": "Sync",
   "STEP_2_ILLUS_SETTINGS": "Optionen",
   "STEP_2_ILLUS_CREATE": "+ Neuer Raum",
   "STEP_2_ILLUS_MANUAL": "Manuell verbinden / Erweitert",
   "STEP_2_ILLUS_COPIED": "Einladungslink kopiert!",
-  "STEP_3_TITLE": "Teilen & Synchronisieren",
-  "STEP_3_DESC": "Teile den Link mit deinen Freunden. Dank der automatischen Erkennung treten sie mit nur einem Klick bei — ganz ohne Registrierung. Wählt euer Video und schaut perfekt synchron.",
+  "STEP_3_TITLE": "Synchron genießen",
+  "STEP_3_DESC": "Drücke auf Wiedergabe. Egal wer pausiert, spult oder startet: Alles läuft bei allen Beteiligten absolut zeitgleich und verzögerungsfrei ab.",
   "STEP_3_ILLUS_IN_SYNC": "SYNCHRON",
   "SELF_TITLE": "Für Self-Hoster",
   "SELF_SUBTITLE": "Du traust dem Server nicht? Behalte die volle Datenhoheit. Richte deinen eigenen privaten Relay-Server in wenigen Minuten ein.",
diff --git a/website/locales/en.json b/website/locales/en.json
index e0c2dbd..b3d71ff 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Teleparty privacy policies and tracking data collection:",
   "COMP_FOOTNOTE_4": "Works on websites that allow script injections into standard HTML5 video tags. Websites with highly strict Content Security Policies (CSP), DRM copy protection, or heavily obfuscated player wrappers (like complex shadow DOMs) might restrict automated control or injection.",
   "STEPS_TITLE": "Getting Started",
-  "STEP_1_TITLE": "Install Extension",
-  "STEP_1_DESC": "Add KoalaSync to your browser in seconds. Works on Chrome, Firefox, Edge, Brave, and other Chromium browsers. 100% free and account-free.",
-  "STEP_1_ILLUS_DESC": "Privacy-first video synchronizer",
-  "STEP_1_ILLUS_DL_CHROME": "Download for Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Download for Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Extension Active",
-  "STEP_1_ILLUS_READY": "Ready to watch together!",
-  "STEP_2_TITLE": "Create a Room",
-  "STEP_2_DESC": "Open the extension popup and click '+ Create New Room'. KoalaSync instantly establishes a secure, encrypted session and copies the invitation link.",
+  "STEP_1_TITLE": "Create & Share Room",
+  "STEP_1_DESC": "Open the extension popup, create a room with one click, and share the link with your friends. They join instantly via the invitation bridge.",
+  "STEP_1_ILLUS_DESC": "Select a tab to link",
+  "STEP_1_ILLUS_DL_CHROME": "Link YouTube Tab",
+  "STEP_1_ILLUS_DL_FIREFOX": "Link Netflix Tab",
+  "STEP_1_ILLUS_ACTIVE": "Tab Linked",
+  "STEP_1_ILLUS_READY": "Ready to sync playback!",
+  "STEP_2_TITLE": "Select Video Tab",
+  "STEP_2_DESC": "Go to your video tab and select the tab you want to synchronize in the popup. KoalaSync automatically links your playheads from here.",
   "STEP_2_ILLUS_ROOM": "Room",
   "STEP_2_ILLUS_SYNC": "Sync",
   "STEP_2_ILLUS_SETTINGS": "Settings",
   "STEP_2_ILLUS_CREATE": "+ Create New Room",
   "STEP_2_ILLUS_MANUAL": "Manual Connect / Advanced",
   "STEP_2_ILLUS_COPIED": "Invite link copied!",
-  "STEP_3_TITLE": "Share & Sync",
-  "STEP_3_DESC": "Send the link to your friends. They join with a single click — no registration required. Pick any video and enjoy it in perfect real-time sync.",
+  "STEP_3_TITLE": "Enjoy Perfect Sync",
+  "STEP_3_DESC": "Press play. Whether someone pauses, seeks, or plays, everyone's playback stays perfectly in sync without any lag.",
   "STEP_3_ILLUS_IN_SYNC": "IN SYNC",
   "SELF_TITLE": "For Self-Hosters",
   "SELF_SUBTITLE": "Don't trust our server? Maintain full data sovereignty. Deploy your own private relay server in minutes.",
diff --git a/website/locales/es.json b/website/locales/es.json
index 4a74f9c..9520c3c 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Políticas de privacidad y recopilación de datos de Teleparty:",
   "COMP_FOOTNOTE_4": "Funciona en sitios web que permiten inyecciones de scripts en etiquetas de video HTML5 estándar. Los sitios con políticas de seguridad (CSP) muy estrictas, protección DRM o reproductores ofuscados (como DOMs de sombra complejos) pueden restringir el control automático.",
   "STEPS_TITLE": "Cómo empezar",
-  "STEP_1_TITLE": "Instalar la extensión",
-  "STEP_1_DESC": "Añade KoalaSync a tu navegador en segundos. Funciona en Chrome, Firefox, Edge, Brave y otros navegadores Chromium. 100% gratis y sin cuentas.",
-  "STEP_1_ILLUS_DESC": "Sincronizador de video privado",
-  "STEP_1_ILLUS_DL_CHROME": "Descargar para Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Descargar para Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Extensión activa",
-  "STEP_1_ILLUS_READY": "¡Listo para ver juntos!",
-  "STEP_2_TITLE": "Crear una sala",
-  "STEP_2_DESC": "Abre la extensión y haz clic en '+ Crear nueva sala'. KoalaSync establece al instante una sesión segura y encriptada y copia el enlace de invitación.",
+  "STEP_1_TITLE": "Crear y compartir sala",
+  "STEP_1_DESC": "Abre la extensión, crea una sala con un clic y comparte el enlace con tus amigos. Se unirán al instante a través del enlace de invitación.",
+  "STEP_1_ILLUS_DESC": "Elige una pestaña para vincular",
+  "STEP_1_ILLUS_DL_CHROME": "Vincular pestaña de YouTube",
+  "STEP_1_ILLUS_DL_FIREFOX": "Vincular pestaña de Netflix",
+  "STEP_1_ILLUS_ACTIVE": "Pestaña vinculada",
+  "STEP_1_ILLUS_READY": "Listo para ver en sincronía!",
+  "STEP_2_TITLE": "Seleccionar pestaña de vídeo",
+  "STEP_2_DESC": "Ve a la pestaña de tu vídeo y selecciónala en el menú de la extensión. KoalaSync vinculará vuestros reproductores automáticamente.",
   "STEP_2_ILLUS_ROOM": "Sala",
   "STEP_2_ILLUS_SYNC": "Sincro",
   "STEP_2_ILLUS_SETTINGS": "Ajustes",
   "STEP_2_ILLUS_CREATE": "+ Crear nueva sala",
   "STEP_2_ILLUS_MANUAL": "Conexión manual / Avanzado",
   "STEP_2_ILLUS_COPIED": "¡Enlace de invitación copiado!",
-  "STEP_3_TITLE": "Compartir y Sincronizar",
-  "STEP_3_DESC": "Envía el enlace a tus amigos. Se unirán con un solo clic, sin necesidad de registrarse. Elige cualquier vídeo y disfrútalo en perfecta sincronización en tiempo real.",
+  "STEP_3_TITLE": "Disfrutar de la sincronización",
+  "STEP_3_DESC": "Pulsa reproducir. Cuando alguien pause, avance o reproduzca, el vídeo de todos se mantendrá en sincronía en tiempo real y sin retrasos.",
   "STEP_3_ILLUS_IN_SYNC": "SINCRONIZADO",
   "SELF_TITLE": "Para auto-alojadores",
   "SELF_SUBTITLE": "¿No te fías de nuestro servidor? Mantén la soberanía total de tus datos. Despliega tu propio servidor de retransmisión en minutos.",
diff --git a/website/locales/fr.json b/website/locales/fr.json
index 53dafba..038b7bb 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Politiques de confidentialité et collecte de données de suivi de Teleparty :",
   "COMP_FOOTNOTE_4": "Fonctionne sur les sites web qui autorisent les injections de scripts dans les balises vidéo HTML5 standard. Les sites avec des politiques de sécurité du contenu (CSP) très strictes, une protection contre la copie DRM ou des conteneurs de lecteurs fortement obscurcis (comme des DOM fantômes complexes) peuvent restreindre le contrôle automatisé ou l'injection.",
   "STEPS_TITLE": "Pour commencer",
-  "STEP_1_TITLE": "Installer l'extension",
-  "STEP_1_DESC": "Ajoutez KoalaSync à votre navigateur en quelques secondes. Fonctionne sur Chrome, Firefox, Edge, Brave et autres navigateurs Chromium. 100% gratuit et sans compte.",
-  "STEP_1_ILLUS_DESC": "Synchronisateur vidéo respectueux de la vie privée",
-  "STEP_1_ILLUS_DL_CHROME": "Télécharger pour Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Télécharger pour Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Extension active",
-  "STEP_1_ILLUS_READY": "Prêt à regarder ensemble !",
-  "STEP_2_TITLE": "Créer un salon",
-  "STEP_2_DESC": "Ouvrez l'extension et cliquez sur '+ Créer un salon'. KoalaSync établit instantanément une session sécurisée et cryptée et copie le lien d'invitation.",
+  "STEP_1_TITLE": "Créer et partager un salon",
+  "STEP_1_DESC": "Ouvrez l'extension, créez un salon en un clic et partagez le lien avec vos amis. Ils rejoindront instantanément via le lien d'invitation.",
+  "STEP_1_ILLUS_DESC": "Choisir un onglet à lier",
+  "STEP_1_ILLUS_DL_CHROME": "Lier l'onglet YouTube",
+  "STEP_1_ILLUS_DL_FIREFOX": "Lier l'onglet Netflix",
+  "STEP_1_ILLUS_ACTIVE": "Onglet lié",
+  "STEP_1_ILLUS_READY": "Prêt à regarder en synchronisation !",
+  "STEP_2_TITLE": "Sélectionner l'onglet vidéo",
+  "STEP_2_DESC": "Allez sur l'onglet de votre vidéo et sélectionnez-le dans le menu de l'extension. KoalaSync liera vos lecteurs automatiquement.",
   "STEP_2_ILLUS_ROOM": "Salon",
   "STEP_2_ILLUS_SYNC": "Synchro",
   "STEP_2_ILLUS_SETTINGS": "Options",
   "STEP_2_ILLUS_CREATE": "+ Créer un nouveau salon",
   "STEP_2_ILLUS_MANUAL": "Connexion manuelle / Avancé",
   "STEP_2_ILLUS_COPIED": "Lien d'invitation copié !",
-  "STEP_3_TITLE": "Partager & Synchroniser",
-  "STEP_3_DESC": "Envoyez le lien à vos amis. Ils rejoignent en un clic — sans inscription. Choisissez n'importe quelle vidéo et profitez-en en parfaite synchronisation en temps réel.",
+  "STEP_3_TITLE": "Profiter de la synchronisation",
+  "STEP_3_DESC": "Lancez la lecture. Si quelqu'un met en pause, avance ou joue, la vidéo de tout le monde reste synchronisée en temps réel sans décalage.",
   "STEP_3_ILLUS_IN_SYNC": "SYNCHRONISÉ",
   "SELF_TITLE": "Pour l'auto-hébergement",
   "SELF_SUBTITLE": "Vous ne faites pas confiance à notre serveur ? Conservez votre souveraineté totale sur les données. Déployez votre propre serveur relais en quelques minutes.",
diff --git a/website/locales/it.json b/website/locales/it.json
index 8076ff3..76ab794 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Politiche sulla privacy di Teleparty:",
   "COMP_FOOTNOTE_4": "Funziona su siti che permettono l'uso di script nei tag video HTML5. Alcuni siti con protezioni DRM molto rigide potrebbero limitare il controllo automatico.",
   "STEPS_TITLE": "Inizia ora",
-  "STEP_1_TITLE": "Installa l'Estensione",
-  "STEP_1_DESC": "Aggiungi KoalaSync al tuo browser in pochi secondi. Funziona su Chrome, Firefox, Edge, Brave e altri browser Chromium. 100% gratuito e senza account.",
-  "STEP_1_ILLUS_DESC": "Sincronizzatore video privato",
-  "STEP_1_ILLUS_DL_CHROME": "Scarica per Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Scarica per Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Estensione Attiva",
-  "STEP_1_ILLUS_READY": "Pronti a guardare!",
-  "STEP_2_TITLE": "Crea una Stanza",
-  "STEP_2_DESC": "Apri l'estensione e clicca su '+ Crea nuova stanza'. KoalaSync avvia istantaneamente una sessione sicura e crittografata e copia il link di invito.",
+  "STEP_1_TITLE": "Creare e condividere la stanza",
+  "STEP_1_DESC": "Apri l'estensione, crea una stanza con un clic e condividi il link con i tuoi amici. Si uniranno all'istante tramite il link di invito.",
+  "STEP_1_ILLUS_DESC": "Scegli una scheda da collegare",
+  "STEP_1_ILLUS_DL_CHROME": "Collega scheda YouTube",
+  "STEP_1_ILLUS_DL_FIREFOX": "Collega scheda Netflix",
+  "STEP_1_ILLUS_ACTIVE": "Scheda collegata",
+  "STEP_1_ILLUS_READY": "Pronto per guardare in sincro !",
+  "STEP_2_TITLE": "Selezionare la scheda del video",
+  "STEP_2_DESC": "Vai alla scheda del tuo video e selezionala nel menu dell'estensione. KoalaSync collegherà i vostri lettori in modo automatico.",
   "STEP_2_ILLUS_ROOM": "Stanza",
   "STEP_2_ILLUS_SYNC": "Sincro",
   "STEP_2_ILLUS_SETTINGS": "Ajustes",
   "STEP_2_ILLUS_CREATE": "+ Crea Nuova Stanza",
   "STEP_2_ILLUS_MANUAL": "Manuale / Avanzato",
   "STEP_2_ILLUS_COPIED": "Link copiato!",
-  "STEP_3_TITLE": "Condividi e Guarda",
-  "STEP_3_DESC": "Invia il link ai tuoi amici. Si uniranno con un solo clic — nessuna registrazione richiesta. Scegli qualsiasi video e goditelo in perfetta sincronizzazione in tempo reale.",
+  "STEP_3_TITLE": "Godersi la sincronizzazione",
+  "STEP_3_DESC": "Avvia la riproduzione. Quando qualcuno mette in pausa, avanza o riproduce, il video di tutti rimarrà sincronizzato in tempo reale senza ritardi.",
   "STEP_3_ILLUS_IN_SYNC": "SINCRONIZZATI",
   "SELF_TITLE": "Per utenti esperti",
   "SELF_SUBTITLE": "Preferisci gestire i tuoi dati? Avvia il tuo server privato in pochi minuti.",
diff --git a/website/locales/ja.json b/website/locales/ja.json
index 09a4b4a..1c80cb7 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Telepartyのプライバシーポリシーと追跡データの収集について:",
   "COMP_FOOTNOTE_4": "標準的なHTML5ビデオタグへのスクリプトインジェクションを許可するウェブサイトで動作します。非常に厳格なコンテンツセキュリティポリシー（CSP）、DRMコピー保護、または高度に難読化されたプレーヤーラッパー（複雑なシャドウDOMなど）を持つウェブサイトでは、自動制御やインジェクションが制限される場合があります。",
   "STEPS_TITLE": "はじめに",
-  "STEP_1_TITLE": "拡張機能をインストール",
-  "STEP_1_DESC": "KoalaSyncをわずか数秒でブラウザに追加できます。Chrome、Firefox、Edge、Brave、およびその他のChromiumブラウザに対応。100%無料でアカウント登録も不要です。",
-  "STEP_1_ILLUS_DESC": "プライバシー優先のビデオ同期ツール",
-  "STEP_1_ILLUS_DL_CHROME": "Chrome版をダウンロード",
-  "STEP_1_ILLUS_DL_FIREFOX": "Firefox版をダウンロード",
-  "STEP_1_ILLUS_ACTIVE": "拡張機能はアクティブです",
-  "STEP_1_ILLUS_READY": "一緒に観る準備は完了！",
-  "STEP_2_TITLE": "ルームを作成",
-  "STEP_2_DESC": "拡張機能を開いて「+ 新規ルーム作成」をクリックします。KoalaSyncは即座に安全で暗号化されたセッションを確立し、招待リンクをコピーします。",
+  "STEP_1_TITLE": "ルーム作成と共有",
+  "STEP_1_DESC": "拡張機能を開き、ワンクリックでルームを作成してリンクを共有します。友達は招待リンクからすぐに参加できます。",
+  "STEP_1_ILLUS_DESC": "連携するタブを選択",
+  "STEP_1_ILLUS_DL_CHROME": "YouTubeタブを連携",
+  "STEP_1_ILLUS_DL_FIREFOX": "Netflixタブを連携",
+  "STEP_1_ILLUS_ACTIVE": "タブ連携完了",
+  "STEP_1_ILLUS_READY": "同期再生の準備完了 !",
+  "STEP_2_TITLE": "動画タブの選択",
+  "STEP_2_DESC": "動画のあるタブを開き、拡張機能のメニューでそのタブを選択します。KoalaSyncが自動的にお互いのプレイヤーを連携させます。",
   "STEP_2_ILLUS_ROOM": "ルーム",
   "STEP_2_ILLUS_SYNC": "同期",
   "STEP_2_ILLUS_SETTINGS": "設定",
   "STEP_2_ILLUS_CREATE": "+ 新規ルーム作成",
   "STEP_2_ILLUS_MANUAL": "手動接続 / 詳細設定",
   "STEP_2_ILLUS_COPIED": "招待リンクをコピーしました！",
-  "STEP_3_TITLE": "共有と同期",
-  "STEP_3_DESC": "友達にリンクを送信します。登録不要で、ワンクリックで参加できます。お好みの動画を選んで、完璧なリアルタイム同期でお楽しみください。",
+  "STEP_3_TITLE": "同期を楽しむ",
+  "STEP_3_DESC": "再生ボタンを押します。誰かが一時停止、早送り、または再生をしても、全員の動画がタイムラグなしで完璧に同期します。",
   "STEP_3_ILLUS_IN_SYNC": "同期中",
   "SELF_TITLE": "セルフホストする方向け",
   "SELF_SUBTITLE": "公式サーバーを信頼しませんか？データの完全な所有権を維持しましょう。数分で独自のプライベートリレーサーバーを構築できます。",
diff --git a/website/locales/ko.json b/website/locales/ko.json
index 53b82c3..8e8bb6b 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Teleparty 개인정보 처리방침 및 추적 데이터 수집 정보:",
   "COMP_FOOTNOTE_4": "표준 HTML5 비디오 태그에 스크립트 삽입을 허용하는 웹사이트에서 작동합니다. 콘텐츠 보안 정책(CSP)이 매우 엄격하거나, DRM 복사 방지가 적용되었거나, 플레이어 래퍼가 복잡하게 난독화된 웹사이트(예: 복잡한 섀도 DOM)에서는 자동 제어 또는 스크립트 삽입이 제한될 수 있습니다.",
   "STEPS_TITLE": "시작하기",
-  "STEP_1_TITLE": "확장 프로그램 설치",
-  "STEP_1_DESC": "몇 초 만에 브라우저에 KoalaSync를 추가하세요. Chrome, Firefox, Edge, Brave 및 기타 Chromium 브라우저에서 작동합니다. 100% 무료이며 계정이 필요 없습니다.",
-  "STEP_1_ILLUS_DESC": "개인정보 보호 중심의 비디오 동기화 프로그램",
-  "STEP_1_ILLUS_DL_CHROME": "Chrome용 다운로드",
-  "STEP_1_ILLUS_DL_FIREFOX": "Firefox용 다운로드",
-  "STEP_1_ILLUS_ACTIVE": "확장 프로그램 활성화됨",
-  "STEP_1_ILLUS_READY": "함께 시청할 준비가 되었습니다!",
-  "STEP_2_TITLE": "방 만들기",
-  "STEP_2_DESC": "확장 프로그램을 열고 '+ 새 방 만들기'를 클릭합니다. KoalaSync가 즉시 안전한 암호화 세션을 시작하고 초대 링크를 복사합니다.",
+  "STEP_1_TITLE": "방 만들기 및 공유",
+  "STEP_1_DESC": "확장 프로그램을 열고 클릭 한 번으로 방을 만든 후 링크를 공유하세요. 친구들이 초대 링크를 통해 바로 참여합니다.",
+  "STEP_1_ILLUS_DESC": "연결할 탭 선택",
+  "STEP_1_ILLUS_DL_CHROME": "YouTube 탭 연결",
+  "STEP_1_ILLUS_DL_FIREFOX": "Netflix 탭 연결",
+  "STEP_1_ILLUS_ACTIVE": "탭 연결됨",
+  "STEP_1_ILLUS_READY": "동기화 시청 준비 완료 !",
+  "STEP_2_TITLE": "동영상 탭 선택",
+  "STEP_2_DESC": "동영상이 열려 있는 탭으로 이동하여 확장 프로그램 메뉴에서 해당 탭을 선택하세요. KoalaSync가 플레이어를 자동으로 연결합니다.",
   "STEP_2_ILLUS_ROOM": "방",
   "STEP_2_ILLUS_SYNC": "동기화",
   "STEP_2_ILLUS_SETTINGS": "설정",
   "STEP_2_ILLUS_CREATE": "+ 새 방 만들기",
   "STEP_2_ILLUS_MANUAL": "수동 연결 / 고급",
   "STEP_2_ILLUS_COPIED": "초대 링크가 복사되었습니다!",
-  "STEP_3_TITLE": "공유 및 동기화",
-  "STEP_3_DESC": "친구들에게 링크를 보내세요. 회원가입 없이 클릭 한 번으로 참여할 수 있습니다. 원하는 동영상을 선택하고 완벽한 실시간 동기화로 감상하세요.",
+  "STEP_3_TITLE": "동기화 즐기기",
+  "STEP_3_DESC": "재생을 누르세요. 누군가 일시중지, 탐색 또는 재생을 하더라도 모든 사람의 영상이 지연 없이 실시간으로 동기화됩니다.",
   "STEP_3_ILLUS_IN_SYNC": "동기화됨",
   "SELF_TITLE": "자체 호스팅 사용자를 위한 안내",
   "SELF_SUBTITLE": "공식 서버를 신뢰하기 어려우신가요? 완벽한 데이터 주권을 유지하세요. 몇 분 만에 나만의 개인 릴레이 서버를 구축할 수 있습니다.",
diff --git a/website/locales/nl.json b/website/locales/nl.json
index fc1e2d3..5e36a7b 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Teleparty privacybeleid en trackinggegevensverzameling:",
   "COMP_FOOTNOTE_4": "Werkt op websites die scriptinjecties in standaard HTML5-videotags toestaan. Websites met een zeer strikt Content Security Policy (CSP), DRM-kopieerbeveiliging of sterk versluierde spelers (zoals complexe shadow-DOM's) kunnen automatische controle of injectie beperken.",
   "STEPS_TITLE": "Aan de slag",
-  "STEP_1_TITLE": "Extensie installeren",
-  "STEP_1_DESC": "Voeg KoalaSync in enkele seconden toe aan je browser. Werkt op Chrome, Firefox, Edge, Brave en andere Chromium-browsers. 100% gratis en zonder account.",
-  "STEP_1_ILLUS_DESC": "Privacy-first videosynchronisator",
-  "STEP_1_ILLUS_DL_CHROME": "Downloaden voor Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Downloaden voor Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Extensie actief",
-  "STEP_1_ILLUS_READY": "Klaar om samen te kijken!",
-  "STEP_2_TITLE": "Kamer maken",
-  "STEP_2_DESC": "Open de extensie en klik op '+ Nieuwe kamer maken'. KoalaSync start direct een beveiligde, versleutelde sessie en kopieert de uitnodigingslink.",
+  "STEP_1_TITLE": "Kamer maken en delen",
+  "STEP_1_DESC": "Open de extensie, maak een kamer met één klik en deel de link met je vrienden. Ze nemen direct deel via de uitnodigingslink.",
+  "STEP_1_ILLUS_DESC": "Kies een tabblad om te koppelen",
+  "STEP_1_ILLUS_DL_CHROME": "YouTube-tabblad koppelen",
+  "STEP_1_ILLUS_DL_FIREFOX": "Netflix-tabblad koppelen",
+  "STEP_1_ILLUS_ACTIVE": "Tabblad gekoppeld",
+  "STEP_1_ILLUS_READY": "Klaar voor synchroon kijken !",
+  "STEP_2_TITLE": "Videotabblad selecteren",
+  "STEP_2_DESC": "Ga naar je videotabblad en selecteer dit in het menu van de extensie. KoalaSync koppelt vanaf nu automatisch jullie spelers.",
   "STEP_2_ILLUS_ROOM": "Kamer",
   "STEP_2_ILLUS_SYNC": "Sync",
   "STEP_2_ILLUS_SETTINGS": "Instellingen",
   "STEP_2_ILLUS_CREATE": "+ Nieuwe kamer maken",
   "STEP_2_ILLUS_MANUAL": "Handmatig verbinden / Geavanceerd",
   "STEP_2_ILLUS_COPIED": "Uitnodigingslink gekopieerd!",
-  "STEP_3_TITLE": "Delen & Synchroniseren",
-  "STEP_3_DESC": "Stuur de link naar je vrienden. Ze nemen deel met één klik — geen registratie vereist. Kies een video en geniet in perfecte realtime synchronisatie.",
+  "STEP_3_TITLE": "Genieten van de synchronisatie",
+  "STEP_3_DESC": "Druk op afspelen. Of iemand nu pauzeert, spoelt of afspeelt, de video van iedereen blijft perfect en zonder vertraging synchroon.",
   "STEP_3_ILLUS_IN_SYNC": "IN SYNC",
   "SELF_TITLE": "Voor zelf-hosters",
   "SELF_SUBTITLE": "Vertrouwt u onze server niet? Behoud de volledige soevereiniteit over uw gegevens. Implementeer uw eigen privé-relayserver in enkele minuten.",
diff --git a/website/locales/pl.json b/website/locales/pl.json
index 4814380..b13a329 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Polityka prywatności Teleparty i zbieranie danych śledzenia:",
   "COMP_FOOTNOTE_4": "Działa na stronach zezwalających na wstrzykiwanie skryptów do standardowych tagów wideo HTML5. Strony z bardzo rygorystycznymi zasadami bezpieczeństwa (CSP), zabezpieczeniami DRM (kopiowanie) lub mocno zaciemnionymi odtwarzaczami (jak złożone systemy shadow DOM) mogą ograniczać zdalne sterowanie.",
   "STEPS_TITLE": "Jak zacząć",
-  "STEP_1_TITLE": "Zainstaluj rozszerzenie",
-  "STEP_1_DESC": "Dodaj KoalaSync do przeglądarki w kilka sekund. Działa w Chrome, Firefox, Edge, Brave i innych przeglądarkach Chromium. W 100% darmowy i bez konta.",
-  "STEP_1_ILLUS_DESC": "Synchronizator wideo dbający o prywatność",
-  "STEP_1_ILLUS_DL_CHROME": "Pobierz dla Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Pobierz dla Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Rozszerzenie aktywne",
-  "STEP_1_ILLUS_READY": "Gotowe do wspólnego oglądania!",
-  "STEP_2_TITLE": "Utwórz pokój",
-  "STEP_2_DESC": "Otwórz rozszerzenie i kliknij '+ Utwórz nowy pokój'. KoalaSync natychmiast nawiąże bezpieczną, szyfrowaną sesję i skopiuje link z zaproszeniem.",
+  "STEP_1_TITLE": "Utwórz i udostępnij pokój",
+  "STEP_1_DESC": "Otwórz rozszerzenie, utwórz pokój jednym kliknięciem i udostępnij link znajomym. Dołączą natychmiast przez link z zaproszeniem.",
+  "STEP_1_ILLUS_DESC": "Wybierz kartę do połączenia",
+  "STEP_1_ILLUS_DL_CHROME": "Połącz kartę YouTube",
+  "STEP_1_ILLUS_DL_FIREFOX": "Połącz kartę Netflix",
+  "STEP_1_ILLUS_ACTIVE": "Karta połączona",
+  "STEP_1_ILLUS_READY": "Gotowe do synchronizacji !",
+  "STEP_2_TITLE": "Wybierz kartę z wideo",
+  "STEP_2_DESC": "Przejdź do karty ze swoim wideo i wybierz ją w menu rozszerzenia. KoalaSync automatycznie połączy Wasze odtwarzacze.",
   "STEP_2_ILLUS_ROOM": "Pokój",
   "STEP_2_ILLUS_SYNC": "Sync",
   "STEP_2_ILLUS_SETTINGS": "Ustawienia",
   "STEP_2_ILLUS_CREATE": "+ Utwórz nowy pokój",
   "STEP_2_ILLUS_MANUAL": "Połączenie ręczne / Zaawansowane",
   "STEP_2_ILLUS_COPIED": "Link zaproszenia skopiowany!",
-  "STEP_3_TITLE": "Udostępnij i synchronizuj",
-  "STEP_3_DESC": "Wyślij link znajomym. Dołączą jednym kliknięciem — rejestracja nie jest wymagana. Wybierz dowolne wideo i ciesz się idealną synchronizacją w czasie rzeczywistym.",
+  "STEP_3_TITLE": "Ciesz się synchronizacją",
+  "STEP_3_DESC": "Naciśnij odtwarzaj. Gdy ktoś wstrzyma, przewinie lub odtworzy wideo, odtwarzanie u wszystkich pozostanie idealnie zsynchronizowane.",
   "STEP_3_ILLUS_IN_SYNC": "ZSYNCHRONIZOWANO",
   "SELF_TITLE": "Dla hostujących samodzielnie",
   "SELF_SUBTITLE": "Nie ufasz naszemu serwerowi? Zachowaj pełną suwerenność danych. Wdróż własny prywatny serwer w kilka minut.",
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index 7115d2e..1e3e836 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Políticas de privacidade do Teleparty:",
   "COMP_FOOTNOTE_4": "Funciona em sites que permitem injeção de scripts. Plataformas com DRM estrito podem ter limitações.",
   "STEPS_TITLE": "Como Começar",
-  "STEP_1_TITLE": "Instalar a Extensão",
-  "STEP_1_DESC": "Adicione o KoalaSync ao seu navegador em segundos. Funciona no Chrome, Firefox, Edge, Brave e outros navegadores Chromium. 100% gratuito e sem necessidade de conta.",
-  "STEP_1_ILLUS_DESC": "Extensão segura para ver vídeos",
-  "STEP_1_ILLUS_DL_CHROME": "Baixar para Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Baixar para Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Extensão Ativa",
-  "STEP_1_ILLUS_READY": "Pronto!",
-  "STEP_2_TITLE": "Criar uma Sala",
-  "STEP_2_DESC": "Abra a extensão e clique em '+ Criar nova sala'. O KoalaSync estabelece instantaneamente uma sessão segura e criptografada e copia o link de convite.",
+  "STEP_1_TITLE": "Criar e compartilhar a sala",
+  "STEP_1_DESC": "Abra a extensão, crie uma sala com um clique e compartilhe o link com seus amigos. Eles entram instantaneamente pelo link de convite.",
+  "STEP_1_ILLUS_DESC": "Escolha uma guia para vincular",
+  "STEP_1_ILLUS_DL_CHROME": "Vincular guia do YouTube",
+  "STEP_1_ILLUS_DL_FIREFOX": "Vincular guia do Netflix",
+  "STEP_1_ILLUS_ACTIVE": "Guia vinculada",
+  "STEP_1_ILLUS_READY": "Pronto para ver em sincronia !",
+  "STEP_2_TITLE": "Selecionar a guia do vídeo",
+  "STEP_2_DESC": "Acesse a guia do seu vídeo e selecione-a no menu da extensão. O KoalaSync vincula seus reprodutores automaticamente.",
   "STEP_2_ILLUS_ROOM": "Sala",
   "STEP_2_ILLUS_SYNC": "Sincronia",
   "STEP_2_ILLUS_SETTINGS": "Configurações",
   "STEP_2_ILLUS_CREATE": "+ Criar nova sala",
   "STEP_2_ILLUS_MANUAL": "Manual / Avançado",
   "STEP_2_ILLUS_COPIED": "Link copiado!",
-  "STEP_3_TITLE": "Compartilhar e Assistir",
-  "STEP_3_DESC": "Envie o link para os seus amigos. Eles entram com um único clique — sem necessidade de cadastro. Escolha qualquer vídeo e divirta-se em sincronização perfeita em tempo real.",
+  "STEP_3_TITLE": "Aproveitar a sincronização",
+  "STEP_3_DESC": "Inicie a reprodução. Se alguém pausar, avançar ou reproduzir, o vídeo de todos se mantém sincronizado em tempo real e sem atrasos.",
   "STEP_3_ILLUS_IN_SYNC": "SINCRONIZADOS",
   "SELF_TITLE": "Para usuários avançados",
   "SELF_SUBTITLE": "Prefere gerenciar seus próprios dados? Inicie seu próprio servidor em minutos com Docker.",
diff --git a/website/locales/pt.json b/website/locales/pt.json
index 5abbfc1..bdd545e 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Políticas de privacidade do Teleparty:",
   "COMP_FOOTNOTE_4": "Funciona em websites que permitem a injeção de scripts. Plataformas com DRM estrito podem ter limitações.",
   "STEPS_TITLE": "Como Começar",
-  "STEP_1_TITLE": "Instalar a Extensão",
-  "STEP_1_DESC": "Adicione o KoalaSync ao seu navegador em segundos. Funciona no Chrome, Firefox, Edge, Brave e outros navegadores Chromium. 100% gratuito e sem necessidade de conta.",
-  "STEP_1_ILLUS_DESC": "Extensão segura para ver vídeos",
-  "STEP_1_ILLUS_DL_CHROME": "Descarregar para Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Descarregar para Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Extensão Ativa",
-  "STEP_1_ILLUS_READY": "Pronto!",
-  "STEP_2_TITLE": "Criar uma Sala",
-  "STEP_2_DESC": "Abra a extensão e clique em '+ Criar nova sala'. O KoalaSync estabelece instantaneamente uma sessão segura e encriptada e copia o link de convite.",
+  "STEP_1_TITLE": "Criar e partilhar a sala",
+  "STEP_1_DESC": "Abra a extensão, crie uma sala com um clique e partilhe o link com os seus amigos. Eles entram instantaneamente pelo link de convite.",
+  "STEP_1_ILLUS_DESC": "Escolha um separador para ligar",
+  "STEP_1_ILLUS_DL_CHROME": "Ligar separador do YouTube",
+  "STEP_1_ILLUS_DL_FIREFOX": "Ligar separador do Netflix",
+  "STEP_1_ILLUS_ACTIVE": "Separador ligado",
+  "STEP_1_ILLUS_READY": "Pronto para ver em sincronia !",
+  "STEP_2_TITLE": "Selecionar o separador do vídeo",
+  "STEP_2_DESC": "Aceda ao separador do seu vídeo e selecione-o no menu da extensão. O KoalaSync liga os vossos leitores automaticamente.",
   "STEP_2_ILLUS_ROOM": "Sala",
   "STEP_2_ILLUS_SYNC": "Sincronia",
   "STEP_2_ILLUS_SETTINGS": "Definições",
   "STEP_2_ILLUS_CREATE": "+ Criar Nova Sala",
   "STEP_2_ILLUS_MANUAL": "Manual / Avançado",
   "STEP_2_ILLUS_COPIED": "Link copiado!",
-  "STEP_3_TITLE": "Partilhar e Sincronizar",
-  "STEP_3_DESC": "Envie o link para os seus amigos. Eles entram com um único clique — sem necessidade de registo. Escolha qualquer vídeo e desfrute em sincronização perfeita em tempo real.",
+  "STEP_3_TITLE": "Desfrutar da sincronização",
+  "STEP_3_DESC": "Inicie a reprodução. Se alguém pausar, avançar ou reproduzir, o vídeo de todos mantém-se sincronizado em tempo real e sem atrasos.",
   "STEP_3_ILLUS_IN_SYNC": "SINCRONIZADOS",
   "SELF_TITLE": "Para utilizadores avançados",
   "SELF_SUBTITLE": "Prefere gerir os seus dados? Inicie o seu próprio servidor em minutos com Docker.",
diff --git a/website/locales/ru.json b/website/locales/ru.json
index 95cef17..87e3efe 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Политика конфиденциальности Teleparty и сбор трекеров:",
   "COMP_FOOTNOTE_4": "Работает на сайтах, разрешающих инъекцию скриптов в стандартные видеотеги HTML5. Сайты с очень строгой политикой безопасности контента (CSP), защитой от копирования DRM или сильно обфусцированными оболочками плееров (например, сложные теневые DOM) могут блокировать автоматическое управление.",
   "STEPS_TITLE": "С чего начать",
-  "STEP_1_TITLE": "Установить расширение",
-  "STEP_1_DESC": "Добавьте KoalaSync в браузер за секунды. Работает в Chrome, Firefox, Edge, Brave и других браузерах на базе Chromium. 100% бесплатно и без создания аккаунта.",
-  "STEP_1_ILLUS_DESC": "Ориентированный на конфиденциальность синхронизатор видео",
-  "STEP_1_ILLUS_DL_CHROME": "Скачать для Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Скачать для Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Расширение активно",
-  "STEP_1_ILLUS_READY": "Готовы смотреть вместе!",
-  "STEP_2_TITLE": "Создать комнату",
-  "STEP_2_DESC": "Откройте расширение и нажмите '+ Создать комнату'. KoalaSync мгновенно установит безопасный, зашифрованный сеанс и скопирует ссылку-приглашение.",
+  "STEP_1_TITLE": "Создать комнату и поделиться",
+  "STEP_1_DESC": "Откройте расширение, создайте комнату одним кликом и отправьте ссылку друзьям. Они мгновенно подключатся по приглашению.",
+  "STEP_1_ILLUS_DESC": "Выберите вкладку для подключения",
+  "STEP_1_ILLUS_DL_CHROME": "Подключить вкладку YouTube",
+  "STEP_1_ILLUS_DL_FIREFOX": "Подключить вкладку Netflix",
+  "STEP_1_ILLUS_ACTIVE": "Вкладка подключена",
+  "STEP_1_ILLUS_READY": "Готово к синхронному просмотру !",
+  "STEP_2_TITLE": "Выбрать вкладку с видео",
+  "STEP_2_DESC": "Перейдите на вкладку с видео и выберите её в меню расширения. KoalaSync автоматически свяжет ваши плееры.",
   "STEP_2_ILLUS_ROOM": "Комната",
   "STEP_2_ILLUS_SYNC": "Синхро",
   "STEP_2_ILLUS_SETTINGS": "Опции",
   "STEP_2_ILLUS_CREATE": "+ Создать комнату",
   "STEP_2_ILLUS_MANUAL": "Ручное подключение / Дополнительно",
   "STEP_2_ILLUS_COPIED": "Ссылка скопирована!",
-  "STEP_3_TITLE": "Поделиться и смотреть",
-  "STEP_3_DESC": "Отправьте ссылку друзьям. Они присоединятся одним кликом — регистрация не требуется. Выберите любое видео и смотрите в идеальной синхронизации в реальном времени.",
+  "STEP_3_TITLE": "Наслаждаться синхронизацией",
+  "STEP_3_DESC": "Нажмите кнопку воспроизведения. Когда кто-то ставит на паузу, перематывает или запускает видео, просмотр синхронизируется у всех без задержек.",
   "STEP_3_ILLUS_IN_SYNC": "В СИНХРОНЕ",
   "SELF_TITLE": "Для селф-хостеров",
   "SELF_SUBTITLE": "Не доверяете нашему серверу? Сохраняйте полный контроль над данными. Разверните собственный приватный сервер за пару минут.",
diff --git a/website/locales/tr.json b/website/locales/tr.json
index 072d0bd..8009de4 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Teleparty gizlilik politikaları ve takip verisi toplama:",
   "COMP_FOOTNOTE_4": "Standart HTML5 video etiketlerine komut dosyası eklenmesine izin veren web sitelerinde çalışır. Çok katı İçerik Güvenliği Politikalarına (CSP) sahip, DRM kopya korumalı veya yoğun şekilde gizlenmiş oynatıcı sarmalayıcıları (karmaşık gölge DOM'lar gibi) olan web siteleri otomatik kontrolü veya enjeksiyonu kısıtlayabilir.",
   "STEPS_TITLE": "Başlarken",
-  "STEP_1_TITLE": "Eklentiyi Kur",
-  "STEP_1_DESC": "KoalaSync'i tarayıcınıza saniyeler içinde ekleyin. Chrome, Firefox, Edge, Brave ve diğer Chromium tarayıcılarda çalışır. %100 ücretsizdir ve hesap gerektirmez.",
-  "STEP_1_ILLUS_DESC": "Gizlilik öncelikli video senkronize edici",
-  "STEP_1_ILLUS_DL_CHROME": "Chrome için İndir",
-  "STEP_1_ILLUS_DL_FIREFOX": "Firefox için İndir",
-  "STEP_1_ILLUS_ACTIVE": "Eklenti Etkin",
-  "STEP_1_ILLUS_READY": "Birlikte izlemeye hazır!",
-  "STEP_2_TITLE": "Oda Oluştur",
-  "STEP_2_DESC": "Uzantıyı açın ve '+ Yeni Oda Oluştur'a tıklayın. KoalaSync anında güvenli ve şifreli bir oturum kurar ve davet bağlantısını kopyalar.",
+  "STEP_1_TITLE": "Oda Oluştur ve Paylaş",
+  "STEP_1_DESC": "Uanzıyı açın, tek tıkla oda oluşturun ve bağlantıyı arkadaşlarınızla paylaşın. Davet köprüsü ile anında katılırlar.",
+  "STEP_1_ILLUS_DESC": "Bağlanacak bir sekme seçin",
+  "STEP_1_ILLUS_DL_CHROME": "YouTube Sekmesini Bağla",
+  "STEP_1_ILLUS_DL_FIREFOX": "Netflix Sekmesini Bağla",
+  "STEP_1_ILLUS_ACTIVE": "Sekme Bağlandı",
+  "STEP_1_ILLUS_READY": "Senkronize izleme için hazır !",
+  "STEP_2_TITLE": "Video Sekmesini Seç",
+  "STEP_2_DESC": "Videonuzun bulunduğu sekmeye gidin ve uzantı menüsünden bu sekmeyi seçin. KoalaSync oynatıcılarınızı otomatik olarak bağlar.",
   "STEP_2_ILLUS_ROOM": "Oda",
   "STEP_2_ILLUS_SYNC": "Senkronizasyon",
   "STEP_2_ILLUS_SETTINGS": "Ayarlar",
   "STEP_2_ILLUS_CREATE": "+ Yeni Oda Oluştur",
   "STEP_2_ILLUS_MANUAL": "Manuel Bağlantı / Gelişmiş",
   "STEP_2_ILLUS_COPIED": "Davet bağlantısı kopyalandı!",
-  "STEP_3_TITLE": "Paylaş ve Eşitle",
-  "STEP_3_DESC": "Bağlantıyı arkadaşlarınıza gönderin. Tek bir tıklamayla katılırlar — kayıt gerekmez. Herhangi bir videoyu seçin ve gerçek zamanlı mükemmel senkronizasyonun tadını çıkarın.",
+  "STEP_3_TITLE": "Senkronizasyonun Tadını Çıkar",
+  "STEP_3_DESC": "Oynat tuşuna basın. Birisi durdurduğunda, sardığında veya oynattığında herkesin videosu gecikmesiz olarak senkronize kalır.",
   "STEP_3_ILLUS_IN_SYNC": "EŞİTLENDİ",
   "SELF_TITLE": "Kendi Kendine Barındıranlar İçin",
   "SELF_SUBTITLE": "Sunucumuza güvenmiyor musunuz? Veri egemenliğinizi koruyun. Kendi özel aktarım sunucunuzu dakikalar içinde devreye alın.",
diff --git a/website/locales/uk.json b/website/locales/uk.json
index 892cb22..2c58ec1 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Політика конфіденційності Teleparty і збір даних відстеження:",
   "COMP_FOOTNOTE_4": "Працює на веб-сайтах, які дозволяють ін’єкції сценаріїв у стандартні відеотеги HTML5. Веб-сайти з дуже суворими політиками безпеки вмісту (CSP), захистом від копіювання DRM або сильно затуманеними оболонками програвачів (як-от складні тіньові DOM) можуть обмежувати автоматизований контроль або впровадження.",
   "STEPS_TITLE": "Початок роботи",
-  "STEP_1_TITLE": "Встановити розширення",
-  "STEP_1_DESC": "Додайте KoalaSync до свого браузера за кілька секунд. Працює в Chrome, Firefox, Edge, Brave та інших браузерах Chromium. 100% безкоштовно та без реєстрації.",
-  "STEP_1_ILLUS_DESC": "Синхронізатор відео насамперед із конфіденційністю",
-  "STEP_1_ILLUS_DL_CHROME": "Завантажити для Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "Завантажити для Firefox",
-  "STEP_1_ILLUS_ACTIVE": "Розширення активне",
-  "STEP_1_ILLUS_READY": "Готові дивитися разом!",
-  "STEP_2_TITLE": "Створіть кімнату",
-  "STEP_2_DESC": "Відкрийте розширення та натисніть '+ Створити кімнату'. KoalaSync миттєво встановить безпечний, зашифрований сеанс і скопіює посилання-запрошення.",
+  "STEP_1_TITLE": "Створити кімнату та поділитися",
+  "STEP_1_DESC": "Відкрийте розширення, створити кімнату одним кліком та надішліть посилання друзям. Вони миттєво приєднаються за запрошенням.",
+  "STEP_1_ILLUS_DESC": "Виберіть вкладку для підключення",
+  "STEP_1_ILLUS_DL_CHROME": "Підключити вкладку YouTube",
+  "STEP_1_ILLUS_DL_FIREFOX": "Підключити вкладку Netflix",
+  "STEP_1_ILLUS_ACTIVE": "Вкладку підключено",
+  "STEP_1_ILLUS_READY": "Готово до синхронного перегляду !",
+  "STEP_2_TITLE": "Вибрати вкладку з відео",
+  "STEP_2_DESC": "Перейдіть на вкладку з відео та виберіть її в меню розширення. KoalaSync автоматично зв'яже ваші плеєри.",
   "STEP_2_ILLUS_ROOM": "Кімната",
   "STEP_2_ILLUS_SYNC": "Синхронізувати",
   "STEP_2_ILLUS_SETTINGS": "Налаштування",
   "STEP_2_ILLUS_CREATE": "+ Створити нову кімнату",
   "STEP_2_ILLUS_MANUAL": "Ручне підключення / Додатково",
   "STEP_2_ILLUS_COPIED": "Посилання на запрошення скопійовано!",
-  "STEP_3_TITLE": "Поділитися та синхронізувати",
-  "STEP_3_DESC": "Надішліть посилання друзям. Вони приєднаються одним кліком — без реєстрації. Виберіть будь-яке відео та насолоджуйтеся синхронізацією в реальному часі.",
+  "STEP_3_TITLE": "Насолоджуватися синхронізацією",
+  "STEP_3_DESC": "Натисніть відтворення. Коли хтось зупиняє, перемотує або запускає відео, відтворення у всіх синхронізується без затримок.",
   "STEP_3_ILLUS_IN_SYNC": "СИНХРОНІЗОВАНО",
   "SELF_TITLE": "Для самостійних господарів",
   "SELF_SUBTITLE": "Не довіряєте нашому серверу? Підтримуйте повний суверенітет даних. Розгорніть власний приватний сервер ретрансляції за лічені хвилини.",
diff --git a/website/locales/zh.json b/website/locales/zh.json
index e0e3523..a103a95 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -94,23 +94,23 @@
   "COMP_FOOTNOTE_3": "Teleparty 隐私政策和跟踪数据收集：",
   "COMP_FOOTNOTE_4": "适用于允许将脚本注入标准 HTML5 视频标签的网站。具有高度严格的内容安全策略 (CSP)、DRM 复制保护或严重混淆的播放器包装器（如复杂的影子 DOM）的网站可能会限制自动控制或注入。",
   "STEPS_TITLE": "入门",
-  "STEP_1_TITLE": "安装扩展",
-  "STEP_1_DESC": "数秒内将 KoalaSync 添加到您的浏览器。适用于 Chrome、Firefox、Edge、Brave 及其他 Chromium 浏览器。100% 免费且无需注册账号。",
-  "STEP_1_ILLUS_DESC": "隐私第一的视频同步器",
-  "STEP_1_ILLUS_DL_CHROME": "下载 Chrome",
-  "STEP_1_ILLUS_DL_FIREFOX": "下载 Firefox",
-  "STEP_1_ILLUS_ACTIVE": "分机激活",
-  "STEP_1_ILLUS_READY": "准备好一起观看吧！",
-  "STEP_2_TITLE": "创建房间",
-  "STEP_2_DESC": "打开插件并点击“+ 新建房间”。KoalaSync 会立即建立安全加密的会话，并自动复制邀请链接。",
+  "STEP_1_TITLE": "创建并分享房间",
+  "STEP_1_DESC": "打开插件，一键创建房间并将链接分享给好友。他们可以通过邀请链接立即加入。",
+  "STEP_1_ILLUS_DESC": "选择一个标签页进行绑定",
+  "STEP_1_ILLUS_DL_CHROME": "绑定 YouTube 标签页",
+  "STEP_1_ILLUS_DL_FIREFOX": "绑定 Netflix 标签页",
+  "STEP_1_ILLUS_ACTIVE": "标签页已绑定",
+  "STEP_1_ILLUS_READY": "准备好同步观看 !",
+  "STEP_2_TITLE": "选择视频标签页",
+  "STEP_2_DESC": "转到您的视频标签页，并在插件菜单中选择该页面。KoalaSync 会自动连接你们的播放器。",
   "STEP_2_ILLUS_ROOM": "房间",
   "STEP_2_ILLUS_SYNC": "同步",
   "STEP_2_ILLUS_SETTINGS": "设置",
   "STEP_2_ILLUS_CREATE": "+ 创建新房间",
   "STEP_2_ILLUS_MANUAL": "手动连接/高级",
   "STEP_2_ILLUS_COPIED": "邀请链接已复制！",
-  "STEP_3_TITLE": "分享与同步",
-  "STEP_3_DESC": "将链接发送给好友。他们只需点击一下即可加入——无需注册。选择任意视频，享受完美的实时同步。",
+  "STEP_3_TITLE": "享受同步播放",
+  "STEP_3_DESC": "点击播放。无论是谁暂停、快进还是播放，所有人的视频都会保持完美实时同步，毫无延迟。",
   "STEP_3_ILLUS_IN_SYNC": "同步",
   "SELF_TITLE": "对于自托管者",
   "SELF_SUBTITLE": "不信任我们的服务器？维护完整的数据主权。只需几分钟即可部署您自己的私有中继服务器。",
diff --git a/website/template.html b/website/template.html
index 38ec369..dd9b392 100644
--- a/website/template.html
+++ b/website/template.html
@@ -1035,6 +1035,52 @@
                         <p>{{STEP_1_DESC}}</p>
                     </div>
                     <!-- Custom Step 1 Illustration -->
+                    <div class="step-illustration-2" data-reveal>
+                        <div class="illus-popup-card">
+                            <div class="illus-popup-header">
+                                <div class="illus-popup-brand">
+                                    <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo" width="14" height="14">
+                                    <span>KoalaSync</span>
+                                </div>
+                                <div class="illus-popup-version mockup-version">{{VERSION}}</div>
+                            </div>
+                            <div class="illus-popup-tabs">
+                                <div class="illus-popup-tab active">
+                                    <span>{{STEP_2_ILLUS_ROOM}}</span>
+                                </div>
+                                <div class="illus-popup-tab">
+                                    <span>{{STEP_2_ILLUS_SYNC}}</span>
+                                </div>
+                                <div class="illus-popup-tab">
+                                    <span>{{STEP_2_ILLUS_SETTINGS}}</span>
+                                </div>
+                            </div>
+                            <div class="illus-popup-body">
+                                <div class="illus-popup-btn action-create-room">
+                                    <span>{{STEP_2_ILLUS_CREATE}}</span>
+                                    <div class="illus-btn-shine"></div>
+                                </div>
+                                
+                                <div class="illus-collapsed-details">
+                                    <span class="details-arrow">▶</span>
+                                    <span>{{STEP_2_ILLUS_MANUAL}}</span>
+                                </div>
+                                
+                                <div class="illus-floating-success">
+                                    <span class="success-icon"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="14" height="14" aria-hidden="true"><rect x="9" y="9" width="13" height="13" rx="2" ry="2"/><path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/></svg></span>
+                                    <span>{{STEP_2_ILLUS_COPIED}}</span>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+                <div class="step">
+                    <div class="step-text" data-reveal>
+                        <div class="step-num" aria-hidden="true">02</div>
+                        <h3><span>{{STEP_2_TITLE}}</span></h3>
+                        <p>{{STEP_2_DESC}}</p>
+                    </div>
+                    <!-- Custom Step 2 Illustration -->
                     <div class="step-illustration-1" data-reveal>
                         <div class="illus-browser-container">
                             <div class="illus-browser-header">
@@ -1095,52 +1141,6 @@
                         </div>
                     </div>
                 </div>
-                <div class="step">
-                    <div class="step-text" data-reveal>
-                        <div class="step-num" aria-hidden="true">02</div>
-                        <h3><span>{{STEP_2_TITLE}}</span></h3>
-                        <p>{{STEP_2_DESC}}</p>
-                    </div>
-                    <!-- Custom Step 2 Illustration -->
-                    <div class="step-illustration-2" data-reveal>
-                        <div class="illus-popup-card">
-                            <div class="illus-popup-header">
-                                <div class="illus-popup-brand">
-                                    <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo" width="14" height="14">
-                                    <span>KoalaSync</span>
-                                </div>
-                                <div class="illus-popup-version mockup-version">{{VERSION}}</div>
-                            </div>
-                            <div class="illus-popup-tabs">
-                                <div class="illus-popup-tab active">
-                                    <span>{{STEP_2_ILLUS_ROOM}}</span>
-                                </div>
-                                <div class="illus-popup-tab">
-                                    <span>{{STEP_2_ILLUS_SYNC}}</span>
-                                </div>
-                                <div class="illus-popup-tab">
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                         <div class="step-num" aria-hidden="true">03</div>

From ae3b837bb4783b5a2ae8033e22f7ba70f69b53e6 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:12:23 +0200
Subject: [PATCH 134/151] website: Add Host Control Mode interactive mockup to
 Bento Card 1 and update translations in all 15 locales

---
 website/locales/de.json    |  4 +--
 website/locales/en.json    |  4 +--
 website/locales/es.json    |  4 +--
 website/locales/fr.json    |  4 +--
 website/locales/it.json    |  4 +--
 website/locales/ja.json    |  4 +--
 website/locales/ko.json    |  4 +--
 website/locales/nl.json    |  4 +--
 website/locales/pl.json    |  4 +--
 website/locales/pt-BR.json |  4 +--
 website/locales/pt.json    |  4 +--
 website/locales/ru.json    |  4 +--
 website/locales/tr.json    |  4 +--
 website/locales/uk.json    |  4 +--
 website/locales/zh.json    |  4 +--
 website/style.css          | 74 ++++++++++++++++++++++++++++++++++++++
 website/template.html      | 18 +++++++++-
 17 files changed, 121 insertions(+), 31 deletions(-)

diff --git a/website/locales/de.json b/website/locales/de.json
index 9185960..7d2ba95 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Überbrückt die Distanz und genießt gemeinsame Date-Nächte. Erlebt jeden Plot-Twist, lacht über dieselben Witze und teilt emotionale Momente zur selben Millisekunde.",
   "WHY_TITLE": "Warum KoalaSync?",
   "WHY_SUBTITLE": "Entwickelt für zuverlässigen Sync, Datenschutz und einfache Einrichtung.",
-  "FEATURE_1_TITLE": "Volle Kontrolle, in Echtzeit",
-  "FEATURE_1_DESC": "Einer pausiert, alle pausieren. Einer spult, alle folgen. Unser Zwei-Phasen-Synchronisationsprotokoll koordiniert die Wiedergabe aller Teilnehmer in Echtzeit.",
+  "FEATURE_1_TITLE": "Raum-Kontrolle & Sync",
+  "FEATURE_1_DESC": "Du bestimmst, wer die Wiedergabe steuert. Wähle zwischen Host-Kontrolle, Co-Host-Freigaben oder freiem Zugriff für alle. Jeder Klick bleibt perfekt synchron.",
   "FEATURE_2_TITLE": "Grenzenloses Bingen",
   "FEATURE_2_DESC": "Nächste Episode startet für jeden zeitgleich. KoalaSync erkennt den Episodenwechsel und pausiert, bis jeder Teilnehmer das neue Video fertig geladen hat.",
   "FEATURE_3_TITLE": "Keine Accounts / Datenschutz",
diff --git a/website/locales/en.json b/website/locales/en.json
index b3d71ff..dc1d901 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Bridge the distance and enjoy date nights. Experience every plot twist, laugh at the same jokes, and share emotional moments at the exact same millisecond.",
   "WHY_TITLE": "Why KoalaSync?",
   "WHY_SUBTITLE": "Built for reliable sync, privacy-first design, and easy setup.",
-  "FEATURE_1_TITLE": "Full Control / Instant Sync",
-  "FEATURE_1_DESC": "One pauses, everyone pauses. One seeks, everyone follows. Our two-phase sync protocol coordinates playback in real time across all participants.",
+  "FEATURE_1_TITLE": "Host Control & Sync",
+  "FEATURE_1_DESC": "You decide who controls playback. Choose between Host-only control, Co-host permissions, or Free-for-all mode. Every seek and pause stays perfectly frame-locked.",
   "FEATURE_2_TITLE": "Endless Binge-Watching",
   "FEATURE_2_DESC": "Autoplay in sync. KoalaSync automatically detects episode transitions and holds playback until all peers have successfully loaded the next video.",
   "FEATURE_3_TITLE": "Zero Accounts / Pure Privacy",
diff --git a/website/locales/es.json b/website/locales/es.json
index 9520c3c..9a9515f 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Reduce la distancia y disfruta de noches de citas. Vive cada giro de la trama, ríete de los mismos chistes y comparte momentos emotivos en el mismo milisegundo exacto.",
   "WHY_TITLE": "¿Por qué KoalaSync?",
   "WHY_SUBTITLE": "Diseñado para una sincronización confiable, con la privacidad como prioridad y una configuración sencilla.",
-  "FEATURE_1_TITLE": "Control total / Sincronización instantánea",
-  "FEATURE_1_DESC": "Si uno pausa, todos pausan. Si uno avanza, todos le siguen. Nuestro protocolo de sincronización en dos fases coordina la reproducción en tiempo real para todos los participantes.",
+  "FEATURE_1_TITLE": "Control del host y sincronización",
+  "FEATURE_1_DESC": "Tú decides quién controla la reproducción. Elige entre control exclusivo del host, permisos para cohosts o acceso libre para todos.",
   "FEATURE_2_TITLE": "Maratones sin fin",
   "FEATURE_2_DESC": "Reproducción automática sincronizada. KoalaSync detecta automáticamente los cambios de episodio y detiene la reproducción hasta que todos los participantes hayan cargado el siguiente video.",
   "FEATURE_3_TITLE": "Sin cuentas / Privacidad absoluta",
diff --git a/website/locales/fr.json b/website/locales/fr.json
index 038b7bb..02e1af4 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Comblez la distance et profitez de soirées en tête-à-tête. Vivez chaque rebondissement, riez des mêmes blagues et partagez des moments émotionnels à la milliseconde près.",
   "WHY_TITLE": "Pourquoi KoalaSync ?",
   "WHY_SUBTITLE": "Conçu pour une synchronisation fiable, le respect de la vie privée et une configuration facile.",
-  "FEATURE_1_TITLE": "Contrôle total / Synchro instantanée",
-  "FEATURE_1_DESC": "Un joueur met en pause, tout le monde met en pause. Un joueur avance, tout le monde suit. Notre protocole de synchronisation en deux phases coordonne la lecture en temps réel pour tous les participants.",
+  "FEATURE_1_TITLE": "Contrôle de l'hôte et synchronisation",
+  "FEATURE_1_DESC": "Vous décidez qui contrôle la lecture. Choisissez entre le contrôle exclusif de l'hôte, les droits de co-hôte ou l'accès libre pour tous.",
   "FEATURE_2_TITLE": "Binge-watching sans fin",
   "FEATURE_2_DESC": "Lecture automatique synchronisée. KoalaSync détecte automatiquement les transitions d'épisodes et suspend la lecture jusqu'à ce que tous les participants aient chargé la vidéo suivante.",
   "FEATURE_3_TITLE": "Aucun compte / Vie privée garantie",
diff --git a/website/locales/it.json b/website/locales/it.json
index 76ab794..f9d1f14 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Accorcia le distanze e goditi serate romantiche. Vivi ogni emozione e ridi alle stesse battute nello stesso identico istante.",
   "WHY_TITLE": "Perché KoalaSync?",
   "WHY_SUBTITLE": "Sincronizzazione affidabile, massima privacy e configurazione immediata.",
-  "FEATURE_1_TITLE": "Controllo Totale / Sincro Istantanea",
-  "FEATURE_1_DESC": "Se uno mette in pausa, tutti si fermano. Se uno salta in avanti, gli altri lo seguono. Tutto in tempo reale.",
+  "FEATURE_1_TITLE": "Controllo dell'host e sincronizzazione",
+  "FEATURE_1_DESC": "Decidi tu chi controlla la riproduzione. Scegli tra controllo esclusivo dell'host, permessi per co-host o accesso libero per tutti.",
   "FEATURE_2_TITLE": "Maratone senza interruzioni",
   "FEATURE_2_DESC": "Riproduzione automatica sincronizzata. KoalaSync attende che tutti abbiano caricato l'episodio successivo prima di farlo partire.",
   "FEATURE_3_TITLE": "Senza Account / Privacy Totale",
diff --git a/website/locales/ja.json b/website/locales/ja.json
index 1c80cb7..f93b112 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "距離を縮めてデートナイトを楽しみましょう。すべてのストーリー展開を体験し、同じジョックで笑い、感情的な瞬間をまったく同じミリ秒で共有します。",
   "WHY_TITLE": "KoalaSyncを選ぶ理由",
   "WHY_SUBTITLE": "信頼性の高い同期、プライバシー優先の設計、簡単なセットアップのために構築。",
-  "FEATURE_1_TITLE": "完全なコントロール / 即時同期",
-  "FEATURE_1_DESC": "一人が一時停止すれば、全員が一時停止。一人がシークすれば、全員が追従。2フェーズ同期プロトコルが、リアルタイムで全員の再生状況を連動させます。",
+  "FEATURE_1_TITLE": "ホスト制御と同期",
+  "FEATURE_1_DESC": "再生をコントロールする人を自由に決定できます。ホスト限定、共同ホスト権限、または全員による自由な操作から選択可能です。",
   "FEATURE_2_TITLE": "終わらない連続視聴",
   "FEATURE_2_DESC": "同期した自動再生。KoalaSyncはエピソードの切り替えを自動検知し、全員が次の動画を読み込むまで再生を待機します。",
   "FEATURE_3_TITLE": "アカウント不要 / 純粋なプライバシー",
diff --git a/website/locales/ko.json b/website/locales/ko.json
index 8e8bb6b..aff4ea6 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "거리의 한계를 넘어 데이트를 즐겨보세요. 모든 줄거리의 반전을 경험하고, 같은 농담에 웃으며, 감동적인 순간을 정확히 같은 밀리초에 공유하세요.",
   "WHY_TITLE": "왜 KoalaSync인가요?",
   "WHY_SUBTITLE": "신뢰할 수 있는 동기화, 개인정보 보호 중심 설계, 쉬운 설정을 위해 구축되었습니다.",
-  "FEATURE_1_TITLE": "완벽한 제어 / 즉시 동기화",
-  "FEATURE_1_DESC": "한 명이 일시정지하면 모두가 일시정지됩니다. 한 명이 탐색하면 모두가 따라갑니다. 당사의 2단계 동기화 프로토콜은 실시간으로 모든 참여자의 비디오 재생을 조율합니다.",
+  "FEATURE_1_TITLE": "방장 제어 및 동기화",
+  "FEATURE_1_DESC": "누가 재생을 제어할지 직접 결정하세요. 방장 전용 제어, 공동 방장 권한부여, 또는 누구나 제어 가능한 자유 모드 중에서 선택할 수 있습니다.",
   "FEATURE_2_TITLE": "끊임없는 몰아보기",
   "FEATURE_2_DESC": "동기화된 자동 재생. KoalaSync는 에피소드 전환을 자동으로 감지하고 모든 참여자가 다음 비디오를 로드할 때까지 재생을 대기시킵니다.",
   "FEATURE_3_TITLE": "계정 없음 / 완전한 개인정보 보호",
diff --git a/website/locales/nl.json b/website/locales/nl.json
index 5e36a7b..b0fae4f 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Overbrug de afstand en geniet van date nights. Ervaar elke plotwending, lach om dezelfde grappen en deel emotionele momenten op exact dezelfde milliseconde.",
   "WHY_TITLE": "Waarom KoalaSync?",
   "WHY_SUBTITLE": "Gebouwd voor betrouwbare synchronisatie, privacy-first ontwerp en eenvoudige installatie.",
-  "FEATURE_1_TITLE": "Volledige controle / Directe synchronisatie",
-  "FEATURE_1_DESC": "Eén pauzeert, iedereen pauzeert. Eén spoelt, iedereen volgt. Ons tweefasige synchronisatieprotocol coördineert het afspelen in realtime voor alle deelnemers.",
+  "FEATURE_1_TITLE": "Host-controle & synchronisatie",
+  "FEATURE_1_DESC": "Jij bepaalt wie het afspelen bedient. Kies uit exclusieve host-controle, machtigingen voor co-hosts of vrije bediening voor iedereen.",
   "FEATURE_2_TITLE": "Eindeloos binge-watchen",
   "FEATURE_2_DESC": "Automatisch afspelen in sync. KoalaSync detecteert automatisch afleveringsovergangen en houdt het afspelen vast totdat alle deelnemers de volgende video succesvol hebben geladen.",
   "FEATURE_3_TITLE": "Geen accounts / Pure privacy",
diff --git a/website/locales/pl.json b/website/locales/pl.json
index b13a329..eb457be 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Pokonaj odległość i ciesz się randkami. Przeżywajcie każdy zwrot akcji, śmiejcie się z tych samych żartów i dzielcie emocje w tej samej milisekundzie.",
   "WHY_TITLE": "Dlaczego KoalaSync?",
   "WHY_SUBTITLE": "Stworzony z myślą o niezawodnej synchronizacji, prywatności i łatwej konfiguracji.",
-  "FEATURE_1_TITLE": "Pełna kontrola / Natychmiastowa synchronizacja",
-  "FEATURE_1_DESC": "Jeden zatrzymuje, wszyscy zatrzymują. Jeden przewija, wszyscy podążają. Nasz dwufazowy protokół synchronizacji koordynuje odtwarzanie w czasie rzeczywistym u wszystkich uczestników.",
+  "FEATURE_1_TITLE": "Kontrola hosta i synchronizacja",
+  "FEATURE_1_DESC": "Decydujesz, kto kontroluje odtwarzanie. Wybierz wyłączną kontrolę hosta, uprawnienia współhostów lub tryb wolny dla wszystkich.",
   "FEATURE_2_TITLE": "Niekończące się oglądanie",
   "FEATURE_2_DESC": "Autoodtwarzanie w synchronizacji. KoalaSync automatycznie wykrywa zmiany odcinków i wstrzymuje odtwarzanie, dopóki wszyscy uczestnicy nie załadują następnego filmu.",
   "FEATURE_3_TITLE": "Zero kont / Czysta prywatność",
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index 1e3e836..16f0a80 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Aproveite as noites a dois. Ria das mesmas piadas e sinta as mesmas emoções exatamente no mesmo segundo.",
   "WHY_TITLE": "Por que o KoalaSync?",
   "WHY_SUBTITLE": "Sincronização confiável, máxima privacidade e uso simples.",
-  "FEATURE_1_TITLE": "Controle Total / Sincronia Instantânea",
-  "FEATURE_1_DESC": "Se um pausa, todos pausam. Se um avança, todos seguem. Sincronização em tempo real para todos os participantes.",
+  "FEATURE_1_TITLE": "Controle do host e sincronização",
+  "FEATURE_1_DESC": "Você decide quem controla a reprodução. Escolha entre controle exclusivo do host, permissões para co-hosts ou acesso livre para todos.",
   "FEATURE_2_TITLE": "Maratonas Sem Interrupções",
   "FEATURE_2_DESC": "O KoalaSync detecta a mudança de episódios e pausa automaticamente até que todos tenham carregado o vídeo seguinte.",
   "FEATURE_3_TITLE": "Sem Contas / Privacidade Absoluta",
diff --git a/website/locales/pt.json b/website/locales/pt.json
index bdd545e..2460312 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Aproveite as noites a dois. Ria das mesmas piadas e sinta as mesmas emoções exatamente no mesmo milissegundo.",
   "WHY_TITLE": "Porquê o KoalaSync?",
   "WHY_SUBTITLE": "Sincronização fiável, máxima privacidade e uso simples.",
-  "FEATURE_1_TITLE": "Controlo Total / Sincronia Instantânea",
-  "FEATURE_1_DESC": "Se um pausa, todos pausam. Se um avança, todos seguem. Sincronização em tempo real para todos os participantes.",
+  "FEATURE_1_TITLE": "Controlo do host e sincronização",
+  "FEATURE_1_DESC": "Tu decides quem controla a reprodução. Escolhe entre controlo exclusivo do host, permissões para co-hosts ou acesso livre para todos.",
   "FEATURE_2_TITLE": "Maratonas sem interrupções",
   "FEATURE_2_DESC": "O KoalaSync deteta a mudança de episódios e pausa automaticamente até que todos tenham carregado o vídeo seguinte.",
   "FEATURE_3_TITLE": "Sem Contas / Privacidade Absoluta",
diff --git a/website/locales/ru.json b/website/locales/ru.json
index 87e3efe..c32b734 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Сократите расстояние и наслаждайтесь свиданиями. Переживайте каждый поворот сюжета, смейтесь над шутками и делитесь эмоциями в одну и ту же миллисекунду.",
   "WHY_TITLE": "Почему KoalaSync?",
   "WHY_SUBTITLE": "Создан для надежной синхронизации, конфиденциальности и простой настройки.",
-  "FEATURE_1_TITLE": "Полный контроль и мгновенный синхро",
-  "FEATURE_1_DESC": "Один ставит на паузу — пауза у всех. Один перематывает — все перематывают. Наш двухфазный протокол координирует воспроизведение в реальном времени у всех участников.",
+  "FEATURE_1_TITLE": "Управление хоста и синхронизация",
+  "FEATURE_1_DESC": "Вы решаете, кто управляет воспроизведением. Выбирайте между полным контролем хоста, правами со-хостов или свободным доступом для всех.",
   "FEATURE_2_TITLE": "Бесконечные марафоны",
   "FEATURE_2_DESC": "Синхронное автовоспроизведение. KoalaSync автоматически определяет переход на следующую серию и ждет, пока она загрузится у всех участников.",
   "FEATURE_3_TITLE": "Без аккаунтов и хранения данных",
diff --git a/website/locales/tr.json b/website/locales/tr.json
index 8009de4..fd6fe12 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Mesafeleri köprüleyin ve buluşma gecelerinin tadını çıkarın. Her olay örgüsünü deneyimleyin, aynı şakalara gülün ve duygusal anları tam olarak aynı milisaniyede paylaşın.",
   "WHY_TITLE": "Neden KoalaSync?",
   "WHY_SUBTITLE": "Güvenilir eşitleme, önce gizlilik ilkesi ve kolay kurulum için tasarlandı.",
-  "FEATURE_1_TITLE": "Tam Kontrol / Anında Eşitleme",
-  "FEATURE_1_DESC": "Biri duraklatır, herkes duraklatır. Biri arar, herkes takip eder. İki aşamalı eşitleme protokolümüz, oynatmayı tüm katılımcılar arasında gerçek zamanlı olarak koordine eder.",
+  "FEATURE_1_TITLE": "Oturum Sahibi Kontrolü ve Senkronizasyon",
+  "FEATURE_1_DESC": "Oynatmayı kimin kontrol edeceğine siz karar verin. Yalnızca oturum sahibi kontrolü, ortak yönetici izinleri veya herkes için serbest mod seçeneklerinden birini seçin.",
   "FEATURE_2_TITLE": "Kesintisiz İzleme Keyfi",
   "FEATURE_2_DESC": "Senkronize otomatik oynatma. KoalaSync, bölüm geçişlerini otomatik olarak algılar ve tüm bağlantılar bir sonraki videoyu başarıyla yükleyene kadar oynatmayı bekletir.",
   "FEATURE_3_TITLE": "Sıfır Hesap / Saf Gizlilik",
diff --git a/website/locales/uk.json b/website/locales/uk.json
index 2c58ec1..a8b7347 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "Подолайте відстань і насолоджуйтесь побаченнями. Переживайте кожен поворот сюжету, смійтеся над тими самими жартами та діліться емоційними моментами в ту саму мілісекунду.",
   "WHY_TITLE": "Чому KoalaSync?",
   "WHY_SUBTITLE": "Створено для надійної синхронізації, конфіденційності та простого налаштування.",
-  "FEATURE_1_TITLE": "Повний контроль/миттєва синхронізація",
-  "FEATURE_1_DESC": "Один робить паузу, всі зупиняються. Один шукає, всі йдуть. Наш двофазний протокол синхронізації координує відтворення в режимі реального часу для всіх учасників.",
+  "FEATURE_1_TITLE": "Керування хоста та синхронізація",
+  "FEATURE_1_DESC": "Ви вирішуєте, хто керує відтворенням. Вибирайте між повним контролем хоста, дозволами для співхостів або вільним режимом для всіх.",
   "FEATURE_2_TITLE": "Нескінченне споглядання",
   "FEATURE_2_DESC": "Автоматичне відтворення синхронізовано. KoalaSync автоматично визначає переходи епізодів і утримує відтворення, доки всі однорангові пристрої успішно не завантажать наступне відео.",
   "FEATURE_3_TITLE": "Нуль облікових записів / чиста конфіденційність",
diff --git a/website/locales/zh.json b/website/locales/zh.json
index a103a95..abdc1e5 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -42,8 +42,8 @@
   "USE_CASE_3_DESC": "拉近距离，享受约会之夜。体验每一个情节转折，嘲笑同样的笑话，并在同一毫秒内分享情感时刻。",
   "WHY_TITLE": "为什么是KoalaSync？",
   "WHY_SUBTITLE": "专为可靠的同步、隐私优先的设计和轻松的设置而打造。",
-  "FEATURE_1_TITLE": "完全控制/即时同步",
-  "FEATURE_1_DESC": "一个人停顿，所有人都停顿。一追寻，众人追随。我们的两阶段同步协议协调所有参与者的实时播放。",
+  "FEATURE_1_TITLE": "房主控制与同步",
+  "FEATURE_1_DESC": "您可以自主决定谁来控制播放。在房主独占控制、协同房主权限或所有人自由操作模式之间进行选择。",
   "FEATURE_2_TITLE": "无尽的狂欢",
   "FEATURE_2_DESC": "自动同步播放。 KoalaSync 自动检测剧集转换并保持播放，直到所有对等方都成功加载下一个视频。",
   "FEATURE_3_TITLE": "零账户/纯粹隐私",
diff --git a/website/style.css b/website/style.css
index ae66e32..19e89d1 100644
--- a/website/style.css
+++ b/website/style.css
@@ -3783,3 +3783,77 @@ header[id] {
 @keyframes demoAttn {
     50% { box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.75); }
 }
+
+
+/* --- Bento Card Host Control Mockup Additions --- */
+
+.bento-content-wrap {
+    display: flex;
+    flex-direction: column;
+    gap: 1.2rem;
+    width: 100%;
+}
+
+.bento-host-control-mockup {
+    background: rgba(15, 23, 42, 0.6);
+    border: 1px solid rgba(255, 255, 255, 0.05);
+    border-radius: 12px;
+    padding: 0.75rem 1rem;
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
+    width: 100%;
+    box-sizing: border-box;
+}
+
+.bento-mockup-header {
+    font-size: 0.65rem;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+    color: var(--text-muted);
+    font-weight: 700;
+}
+
+.bento-mockup-options {
+    display: flex;
+    gap: 0.5rem;
+    width: 100%;
+}
+
+.bento-option {
+    flex: 1;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 6px;
+    font-size: 0.72rem;
+    font-weight: 600;
+    padding: 6px 10px;
+    border-radius: 8px;
+    background: rgba(255, 255, 255, 0.02);
+    border: 1px solid rgba(255, 255, 255, 0.04);
+    color: var(--text-muted);
+    transition: all 0.25s ease;
+    white-space: nowrap;
+}
+
+.bento-option.active {
+    background: rgba(99, 102, 241, 0.12);
+    border: 1px solid rgba(99, 102, 241, 0.35);
+    color: white;
+    box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
+}
+
+.bento-option .option-dot {
+    width: 6px;
+    height: 6px;
+    border-radius: 50%;
+    background: rgba(255, 255, 255, 0.25);
+    transition: background 0.25s ease;
+}
+
+.bento-option.active .option-dot {
+    background: var(--accent);
+    box-shadow: 0 0 6px var(--accent-glow);
+}
diff --git a/website/template.html b/website/template.html
index dd9b392..571b323 100644
--- a/website/template.html
+++ b/website/template.html
@@ -813,7 +813,23 @@
                         </span>
                         <span>{{FEATURE_1_TITLE}}</span>
                     </h3>
-                    <p>{{FEATURE_1_DESC}}</p>
+                    <div class="bento-content-wrap">
+                        <p>{{FEATURE_1_DESC}}</p>
+                        <div class="bento-host-control-mockup">
+                            <div class="bento-mockup-header">Host Control Mode</div>
+                            <div class="bento-mockup-options">
+                                <div class="bento-option active">
+                                    <span class="option-dot"></span> Host Only
+                                </div>
+                                <div class="bento-option">
+                                    <span class="option-dot"></span> Co-Hosts
+                                </div>
+                                <div class="bento-option">
+                                    <span class="option-dot"></span> Free For All
+                                </div>
+                            </div>
+                        </div>
+                    </div>
                 </div>
 
                 <!-- Card 2: Endless Binge-Watching (Bento Standard) -->

From 23aa0c8a1523c19d58754d65f7cce2238fb3d189 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:15:32 +0200
Subject: [PATCH 135/151] website: Fix Host Control mockup to use the actual
 'Only I can control playback' toggle switch

---
 website/locales/de.json    |  6 ++-
 website/locales/en.json    |  6 ++-
 website/locales/es.json    |  6 ++-
 website/locales/fr.json    |  6 ++-
 website/locales/it.json    |  6 ++-
 website/locales/ja.json    |  6 ++-
 website/locales/ko.json    |  6 ++-
 website/locales/nl.json    |  6 ++-
 website/locales/pl.json    |  6 ++-
 website/locales/pt-BR.json |  6 ++-
 website/locales/pt.json    |  6 ++-
 website/locales/ru.json    |  6 ++-
 website/locales/tr.json    |  6 ++-
 website/locales/uk.json    |  6 ++-
 website/locales/zh.json    |  6 ++-
 website/style.css          | 81 +++++++++++++++++++++++---------------
 website/template.html      | 18 ++++-----
 17 files changed, 116 insertions(+), 73 deletions(-)

diff --git a/website/locales/de.json b/website/locales/de.json
index 7d2ba95..8ce3b00 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Warum KoalaSync?",
   "WHY_SUBTITLE": "Entwickelt für zuverlässigen Sync, Datenschutz und einfache Einrichtung.",
   "FEATURE_1_TITLE": "Raum-Kontrolle & Sync",
-  "FEATURE_1_DESC": "Du bestimmst, wer die Wiedergabe steuert. Wähle zwischen Host-Kontrolle, Co-Host-Freigaben oder freiem Zugriff für alle. Jeder Klick bleibt perfekt synchron.",
+  "FEATURE_1_DESC": "Du bestimmst, wer die Wiedergabe steuert. Aktiviere die Host-Steuerung, damit nur du pausieren und spulen darfst, oder ernenne Co-Hosts in der Teilnehmerliste.",
   "FEATURE_2_TITLE": "Grenzenloses Bingen",
   "FEATURE_2_DESC": "Nächste Episode startet für jeden zeitgleich. KoalaSync erkennt den Episodenwechsel und pausiert, bis jeder Teilnehmer das neue Video fertig geladen hat.",
   "FEATURE_3_TITLE": "Keine Accounts / Datenschutz",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync ersetzt keinen Voice-Call. Wenn ihr beim Schauen reden wollt, nutzt ihr weiterhin Discord, Teamspeak, Signal, WhatsApp oder was auch immer ihr normalerweise verwendet.<br><br>Außerdem braucht jede Person selbst Zugriff auf das Video oder die jeweilige Seite. KoalaSync umgeht keine Abos, Logins, DRM, regionale Einschränkungen oder Plattformregeln.<br><br>KoalaSync ist aktuell Desktop-Browser-only, hat keinen eingebauten Chat oder Voice-Chat und die Funktion hängt immer vom jeweiligen Browser und Videoplayer ab.",
   "ALT_SCREEN_SUMMARY_TITLE": "Kurz gesagt",
   "ALT_SCREEN_SUMMARY_BODY": "Bildschirmübertragung ist die einfachste Lösung, wenn es schnell gehen soll und Qualität, Privatsphäre oder individuelle Kontrolle nicht so wichtig sind. KoalaSync passt besser, wenn jeder lokal im eigenen Browser schauen soll und sich der Filmabend mehr wie wirklich gemeinsames Schauen anfühlen soll.",
-  "ALT_TRY_KOALASYNC": "KoalaSync ausprobieren"
+  "ALT_TRY_KOALASYNC": "KoalaSync ausprobieren",
+  "MOCK_HOST_CONTROL_LABEL": "Host-Steuerung",
+  "MOCK_HOST_CONTROL_TOGGLE": "Nur ich darf die Wiedergabe steuern"
 }
diff --git a/website/locales/en.json b/website/locales/en.json
index dc1d901..e68c2f6 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Why KoalaSync?",
   "WHY_SUBTITLE": "Built for reliable sync, privacy-first design, and easy setup.",
   "FEATURE_1_TITLE": "Host Control & Sync",
-  "FEATURE_1_DESC": "You decide who controls playback. Choose between Host-only control, Co-host permissions, or Free-for-all mode. Every seek and pause stays perfectly frame-locked.",
+  "FEATURE_1_DESC": "You decide who controls playback. Turn on Host Control to lock playback actions to yourself, or promote individual peers to co-hosts in the participant list.",
   "FEATURE_2_TITLE": "Endless Binge-Watching",
   "FEATURE_2_DESC": "Autoplay in sync. KoalaSync automatically detects episode transitions and holds playback until all peers have successfully loaded the next video.",
   "FEATURE_3_TITLE": "Zero Accounts / Pure Privacy",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync is not a replacement for a voice call. If you want to talk while watching, you still use Discord, Teamspeak, Signal, WhatsApp or whatever you normally use.<br><br>Everyone also needs access to the video or page on their own device. KoalaSync does not bypass subscriptions, logins, DRM, regional restrictions or platform rules.<br><br>It is currently desktop-browser only, has no built-in chat or voice feature, and compatibility always depends on the browser and the video player.",
   "ALT_SCREEN_SUMMARY_TITLE": "Summary",
   "ALT_SCREEN_SUMMARY_BODY": "Screen sharing is the simplest option when you just want something quick and do not care much about quality, privacy or individual control. KoalaSync is a better fit when everyone should watch locally in their own browser and the session should feel more like actually watching together.",
-  "ALT_TRY_KOALASYNC": "Try KoalaSync"
+  "ALT_TRY_KOALASYNC": "Try KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "Host Control",
+  "MOCK_HOST_CONTROL_TOGGLE": "Only I can control playback"
 }
diff --git a/website/locales/es.json b/website/locales/es.json
index 9a9515f..a9276ed 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "¿Por qué KoalaSync?",
   "WHY_SUBTITLE": "Diseñado para una sincronización confiable, con la privacidad como prioridad y una configuración sencilla.",
   "FEATURE_1_TITLE": "Control del host y sincronización",
-  "FEATURE_1_DESC": "Tú decides quién controla la reproducción. Elige entre control exclusivo del host, permisos para cohosts o acceso libre para todos.",
+  "FEATURE_1_DESC": "Tú decides quién controla la reproducción. Activa el control del anfitrión para que solo tú puedas pausar y avanzar, o asigna coanfitriones.",
   "FEATURE_2_TITLE": "Maratones sin fin",
   "FEATURE_2_DESC": "Reproducción automática sincronizada. KoalaSync detecta automáticamente los cambios de episodio y detiene la reproducción hasta que todos los participantes hayan cargado el siguiente video.",
   "FEATURE_3_TITLE": "Sin cuentas / Privacidad absoluta",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync no sustituye a una llamada de voz. Si quieres hablar mientras ves el contenido, puedes seguir usando Discord, Teamspeak, Signal, WhatsApp o cualquier otra herramienta que utilices habitualmente.<br><br>Además, cada participante necesita acceder al vídeo o a la página web desde su propio dispositivo. KoalaSync no elude suscripciones, inicios de sesión, DRM, restricciones regionales ni las normas de las plataformas.<br><br>Actualmente solo funciona en navegadores de escritorio, no incluye funciones de chat o voz, y la compatibilidad depende siempre del navegador y del reproductor de vídeo.",
   "ALT_SCREEN_SUMMARY_TITLE": "Resumen",
   "ALT_SCREEN_SUMMARY_BODY": "Compartir pantalla es la opción más sencilla cuando buscas algo rápido y no te preocupa demasiado la calidad, la privacidad o el control individual. KoalaSync es una mejor alternativa cuando cada persona debe ver el contenido localmente en su propio navegador y se busca una experiencia que realmente se asemeje a verlo juntos.",
-  "ALT_TRY_KOALASYNC": "Prueba KoalaSync"
+  "ALT_TRY_KOALASYNC": "Prueba KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "Control del anfitrión",
+  "MOCK_HOST_CONTROL_TOGGLE": "Solo yo puedo controlar la reproducción"
 }
diff --git a/website/locales/fr.json b/website/locales/fr.json
index 02e1af4..f981f3d 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Pourquoi KoalaSync ?",
   "WHY_SUBTITLE": "Conçu pour une synchronisation fiable, le respect de la vie privée et une configuration facile.",
   "FEATURE_1_TITLE": "Contrôle de l'hôte et synchronisation",
-  "FEATURE_1_DESC": "Vous décidez qui contrôle la lecture. Choisissez entre le contrôle exclusif de l'hôte, les droits de co-hôte ou l'accès libre pour tous.",
+  "FEATURE_1_DESC": "Vous décidez qui contrôle la lecture. Activez le contrôle de l'hôte pour être le seul à pouvoir mettre en pause et avancer, ou nommez des co-hôtes.",
   "FEATURE_2_TITLE": "Binge-watching sans fin",
   "FEATURE_2_DESC": "Lecture automatique synchronisée. KoalaSync détecte automatiquement les transitions d'épisodes et suspend la lecture jusqu'à ce que tous les participants aient chargé la vidéo suivante.",
   "FEATURE_3_TITLE": "Aucun compte / Vie privée garantie",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync ne remplace pas un appel vocal. Si vous souhaitez discuter tout en regardant, vous continuez à utiliser Discord, Teamspeak, Signal, WhatsApp ou tout autre outil habituel.<br><br>Chacun doit également pouvoir accéder à la vidéo ou à la page depuis son propre appareil. KoalaSync ne contourne ni les abonnements, ni les identifiants, ni les DRM, ni les restrictions géographiques ou les règles des plateformes.<br><br>L'outil fonctionne actuellement uniquement sur les navigateurs de bureau, ne dispose pas de fonction de chat ou de voix intégrée, et la compatibilité dépend toujours du navigateur et du lecteur vidéo utilisé.",
   "ALT_SCREEN_SUMMARY_TITLE": "Résumé",
   "ALT_SCREEN_SUMMARY_BODY": "Le partage d'écran est la solution la plus simple si vous cherchez une méthode rapide sans accorder une grande importance à la qualité, à la confidentialité ou au contrôle individuel. KoalaSync est plus adapté lorsque chaque participant doit visionner le contenu localement dans son propre navigateur, pour une expérience se rapprochant davantage d'un véritable visionnage en commun.",
-  "ALT_TRY_KOALASYNC": "Essayer KoalaSync"
+  "ALT_TRY_KOALASYNC": "Essayer KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "Contrôle de l'hôte",
+  "MOCK_HOST_CONTROL_TOGGLE": "Seul moi peut contrôler la lecture"
 }
diff --git a/website/locales/it.json b/website/locales/it.json
index f9d1f14..b1282e6 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Perché KoalaSync?",
   "WHY_SUBTITLE": "Sincronizzazione affidabile, massima privacy e configurazione immediata.",
   "FEATURE_1_TITLE": "Controllo dell'host e sincronizzazione",
-  "FEATURE_1_DESC": "Decidi tu chi controlla la riproduzione. Scegli tra controllo esclusivo dell'host, permessi per co-host o accesso libero per tutti.",
+  "FEATURE_1_DESC": "Decidi tu chi controlla la riproduzione. Attiva il controllo host per consentire solo a te di mettere in pausa e avanzare, o nomina co-host.",
   "FEATURE_2_TITLE": "Maratone senza interruzioni",
   "FEATURE_2_DESC": "Riproduzione automatica sincronizzata. KoalaSync attende che tutti abbiano caricato l'episodio successivo prima di farlo partire.",
   "FEATURE_3_TITLE": "Senza Account / Privacy Totale",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync non sostituisce una chiamata vocale. Se volete parlare mentre guardate il contenuto, potete continuare a usare Discord, Teamspeak, Signal, WhatsApp o qualsiasi altro strumento abituale.<br><br>Ciascun partecipante deve inoltre poter accedere al video o alla pagina dal proprio dispositivo. KoalaSync non aggira abbonamenti, accessi, DRM, restrizioni geografiche o regole delle piattaforme.<br><br>Al momento è utilizzabile solo tramite browser desktop, non dispone di funzioni di chat o voce integrate e la compatibilità dipende sempre dal browser e dal lettore video.",
   "ALT_SCREEN_SUMMARY_TITLE": "Riepilogo",
   "ALT_SCREEN_SUMMARY_BODY": "La condivisione dello schermo è l'opzione più semplice quando si cerca una soluzione rapida e non si dà molta importanza alla qualità, alla privacy o al controllo individuale. KoalaSync è la scelta ideale quando tutti devono guardare il contenuto localmente sul proprio browser, offrendo un'esperienza che ricorda più da vicino la visione condivisa reale.",
-  "ALT_TRY_KOALASYNC": "Prova KoalaSync"
+  "ALT_TRY_KOALASYNC": "Prova KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "Controllo host",
+  "MOCK_HOST_CONTROL_TOGGLE": "Solo io posso controllare la riproduzione"
 }
diff --git a/website/locales/ja.json b/website/locales/ja.json
index f93b112..5fc0943 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "KoalaSyncを選ぶ理由",
   "WHY_SUBTITLE": "信頼性の高い同期、プライバシー優先の設計、簡単なセットアップのために構築。",
   "FEATURE_1_TITLE": "ホスト制御と同期",
-  "FEATURE_1_DESC": "再生をコントロールする人を自由に決定できます。ホスト限定、共同ホスト権限、または全員による自由な操作から選択可能です。",
+  "FEATURE_1_DESC": "再生をコントロールする人を決定できます。ホスト操作を有効にして自分だけが一時停止やスキップを行えるようにするか、共同ホストを任命します。",
   "FEATURE_2_TITLE": "終わらない連続視聴",
   "FEATURE_2_DESC": "同期した自動再生。KoalaSyncはエピソードの切り替えを自動検知し、全員が次の動画を読み込むまで再生を待機します。",
   "FEATURE_3_TITLE": "アカウント不要 / 純粋なプライバシー",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSyncは音声通話の代わりになるものではありません。視聴しながら会話をする場合は、Discord、TeamSpeak、Signal、WhatsAppなど、普段お使いのツールをそのまま利用します。<br><br>また、参加者全員がそれぞれのデバイスでその動画やページにアクセスできる必要があります。KoalaSyncは、サブスクリプション、ログイン、DRM（デジタル著作権管理）、地域制限、プラットフォームの利用規約などを回避するものではありません。<br><br>現在はデスクトップ版ブラウザのみに対応しており、チャットや音声通話機能は内蔵されていません。また、動作の可否は使用するブラウザや動画プレーヤーに依存します。",
   "ALT_SCREEN_SUMMARY_TITLE": "概要",
   "ALT_SCREEN_SUMMARY_BODY": "画質やプライバシー、個別の操作性をあまり気にせず、手軽に済ませたい場合は「画面共有」が最も簡単な選択肢です。一方、参加者それぞれが自身のブラウザで動画を再生し、実際に同じ空間で一緒に視聴しているような感覚を重視するなら、KoalaSyncの方が適しています。",
-  "ALT_TRY_KOALASYNC": "KoalaSyncを試す"
+  "ALT_TRY_KOALASYNC": "KoalaSyncを試す",
+  "MOCK_HOST_CONTROL_LABEL": "ホスト操作",
+  "MOCK_HOST_CONTROL_TOGGLE": "自分だけが再生を操作できる"
 }
diff --git a/website/locales/ko.json b/website/locales/ko.json
index aff4ea6..3dc51f9 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "왜 KoalaSync인가요?",
   "WHY_SUBTITLE": "신뢰할 수 있는 동기화, 개인정보 보호 중심 설계, 쉬운 설정을 위해 구축되었습니다.",
   "FEATURE_1_TITLE": "방장 제어 및 동기화",
-  "FEATURE_1_DESC": "누가 재생을 제어할지 직접 결정하세요. 방장 전용 제어, 공동 방장 권한부여, 또는 누구나 제어 가능한 자유 모드 중에서 선택할 수 있습니다.",
+  "FEATURE_1_DESC": "누가 재생을 제어할지 직접 결정하세요. 호스트 제어를 활성화하여 자신만 일시중지 및 탐색을 수행하거나 공동 호스트를 지정합니다.",
   "FEATURE_2_TITLE": "끊임없는 몰아보기",
   "FEATURE_2_DESC": "동기화된 자동 재생. KoalaSync는 에피소드 전환을 자동으로 감지하고 모든 참여자가 다음 비디오를 로드할 때까지 재생을 대기시킵니다.",
   "FEATURE_3_TITLE": "계정 없음 / 완전한 개인정보 보호",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync는 음성 통화를 대체하는 서비스가 아닙니다. 영상을 보면서 대화하고 싶다면 평소처럼 Discord, Teamspeak, Signal, WhatsApp 등을 그대로 사용하면 됩니다.<br><br>또한 모든 참가자가 각자의 기기에서 해당 영상이나 페이지에 접속할 수 있어야 합니다. KoalaSync는 구독, 로그인, DRM, 지역 제한 또는 플랫폼 규정을 우회하지 않습니다.<br><br>현재 데스크톱 브라우저에서만 지원되며, 자체 채팅이나 음성 기능은 없습니다. 호환성은 항상 브라우저 및 동영상 플레이어의 영향을 받습니다.",
   "ALT_SCREEN_SUMMARY_TITLE": "요약",
   "ALT_SCREEN_SUMMARY_BODY": "화질, 개인정보 보호, 개별 제어 기능 등을 크게 신경 쓰지 않고 간편하게 진행하고 싶을 때는 화면 공유가 가장 간단한 방법입니다. 반면, 모든 참가자가 각자의 브라우저에서 직접 영상을 시청하며 실제로 함께 보는 듯한 느낌을 원한다면 KoalaSync가 더 적합합니다.",
-  "ALT_TRY_KOALASYNC": "KoalaSync 사용해 보기"
+  "ALT_TRY_KOALASYNC": "KoalaSync 사용해 보기",
+  "MOCK_HOST_CONTROL_LABEL": "호스트 제어",
+  "MOCK_HOST_CONTROL_TOGGLE": "나만 재생을 제어할 수 있음"
 }
diff --git a/website/locales/nl.json b/website/locales/nl.json
index b0fae4f..280dc9e 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Waarom KoalaSync?",
   "WHY_SUBTITLE": "Gebouwd voor betrouwbare synchronisatie, privacy-first ontwerp en eenvoudige installatie.",
   "FEATURE_1_TITLE": "Host-controle & synchronisatie",
-  "FEATURE_1_DESC": "Jij bepaalt wie het afspelen bedient. Kies uit exclusieve host-controle, machtigingen voor co-hosts of vrije bediening voor iedereen.",
+  "FEATURE_1_DESC": "Jij bepaalt wie het afspelen bedient. Schakel hostbeheer in zodat alleen jij kunt pauzeren en spoelen, of wijs co-hosts aan.",
   "FEATURE_2_TITLE": "Eindeloos binge-watchen",
   "FEATURE_2_DESC": "Automatisch afspelen in sync. KoalaSync detecteert automatisch afleveringsovergangen en houdt het afspelen vast totdat alle deelnemers de volgende video succesvol hebben geladen.",
   "FEATURE_3_TITLE": "Geen accounts / Pure privacy",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync is geen vervanging voor een spraakgesprek. Als je tijdens het kijken wilt praten, gebruik je gewoon Discord, Teamspeak, Signal, WhatsApp of wat je normaal ook gebruikt.<br><br>Iedereen heeft ook toegang tot de video of pagina op het eigen apparaat nodig. KoalaSync omzeilt geen abonnementen, inloggegevens, DRM, regionale beperkingen of platformregels.<br><br>Het werkt momenteel alleen in desktopbrowsers, heeft geen ingebouwde chat- of spraakfunctie en de compatibiliteit hangt altijd af van de browser en de videospeler.",
   "ALT_SCREEN_SUMMARY_TITLE": "Samenvatting",
   "ALT_SCREEN_SUMMARY_BODY": "Scherm delen is de eenvoudigste optie als je snel iets wilt doen en niet veel waarde hecht aan kwaliteit, privacy of individuele controle. KoalaSync is een betere keuze wanneer iedereen lokaal in de eigen browser moet kijken en de sessie meer moet aanvoelen als echt samen kijken.",
-  "ALT_TRY_KOALASYNC": "Probeer KoalaSync"
+  "ALT_TRY_KOALASYNC": "Probeer KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "Hostbeheer",
+  "MOCK_HOST_CONTROL_TOGGLE": "Alleen ik mag de weergave bedienen"
 }
diff --git a/website/locales/pl.json b/website/locales/pl.json
index eb457be..b624479 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Dlaczego KoalaSync?",
   "WHY_SUBTITLE": "Stworzony z myślą o niezawodnej synchronizacji, prywatności i łatwej konfiguracji.",
   "FEATURE_1_TITLE": "Kontrola hosta i synchronizacja",
-  "FEATURE_1_DESC": "Decydujesz, kto kontroluje odtwarzanie. Wybierz wyłączną kontrolę hosta, uprawnienia współhostów lub tryb wolny dla wszystkich.",
+  "FEATURE_1_DESC": "Decydujesz, kto steruje odtwarzaniem. Włącz kontrolę hosta, aby tylko Ty mógł wstrzymywać i przewijać, lub mianuj współhostów.",
   "FEATURE_2_TITLE": "Niekończące się oglądanie",
   "FEATURE_2_DESC": "Autoodtwarzanie w synchronizacji. KoalaSync automatycznie wykrywa zmiany odcinków i wstrzymuje odtwarzanie, dopóki wszyscy uczestnicy nie załadują następnego filmu.",
   "FEATURE_3_TITLE": "Zero kont / Czysta prywatność",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync nie zastępuje rozmowy głosowej. Jeśli chcesz rozmawiać podczas oglądania, nadal możesz korzystać z Discorda, TeamSpeaka, Signala, WhatsAppa lub innych narzędzi, których używasz na co dzień.<br><br>Każda osoba musi również mieć dostęp do filmu lub strony na własnym urządzeniu. KoalaSync nie omija subskrypcji, konieczności logowania, zabezpieczeń DRM, ograniczeń regionalnych ani regulaminów platform.<br><br>Obecnie rozwiązanie to działa tylko w przeglądarkach na komputerach stacjonarnych i nie posiada wbudowanego czatu ani funkcji komunikacji głosowej, a kompatybilność zależy od używanej przeglądarki oraz odtwarzacza wideo.",
   "ALT_SCREEN_SUMMARY_TITLE": "Podsumowanie",
   "ALT_SCREEN_SUMMARY_BODY": "Udostępnianie ekranu to najprostsze rozwiązanie, gdy zależy Ci na szybkości, a kwestie jakości, prywatności czy indywidualnej kontroli nad odtwarzaniem nie są priorytetem. KoalaSync sprawdza się lepiej, gdy uczestnicy oglądają materiał lokalnie we własnych przeglądarkach, a sesja ma bardziej przypominać wspólny seans.",
-  "ALT_TRY_KOALASYNC": "Wypróbuj KoalaSync"
+  "ALT_TRY_KOALASYNC": "Wypróbuj KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "Kontrola hosta",
+  "MOCK_HOST_CONTROL_TOGGLE": "Tylko ja mogę sterować odtwarzaniem"
 }
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index 16f0a80..bb9d84f 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Por que o KoalaSync?",
   "WHY_SUBTITLE": "Sincronização confiável, máxima privacidade e uso simples.",
   "FEATURE_1_TITLE": "Controle do host e sincronização",
-  "FEATURE_1_DESC": "Você decide quem controla a reprodução. Escolha entre controle exclusivo do host, permissões para co-hosts ou acesso livre para todos.",
+  "FEATURE_1_DESC": "Você decide quem controla a reprodução. Ative o controle do anfitrião para que apenas você possa pausar e avançar, ou nomeie coanfitriões.",
   "FEATURE_2_TITLE": "Maratonas Sem Interrupções",
   "FEATURE_2_DESC": "O KoalaSync detecta a mudança de episódios e pausa automaticamente até que todos tenham carregado o vídeo seguinte.",
   "FEATURE_3_TITLE": "Sem Contas / Privacidade Absoluta",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "O KoalaSync não substitui uma chamada de voz. Se você quiser conversar enquanto assiste, continue usando Discord, Teamspeak, Signal, WhatsApp ou qualquer ferramenta que utilize normalmente.<br><br>Todos também precisam ter acesso ao vídeo ou à página em seus próprios dispositivos. O KoalaSync não contorna assinaturas, logins, DRM, restrições regionais ou regras da plataforma.<br><br>Atualmente, funciona apenas em navegadores para desktop, não possui recursos integrados de chat ou voz, e a compatibilidade depende sempre do navegador e do reprodutor de vídeo.",
   "ALT_SCREEN_SUMMARY_TITLE": "Resumo",
   "ALT_SCREEN_SUMMARY_BODY": "O compartilhamento de tela é a opção mais simples quando você quer algo rápido e não se preocupa muito com qualidade, privacidade ou controle individual. O KoalaSync é mais adequado quando todos devem assistir localmente em seus próprios navegadores e a sessão deve proporcionar uma experiência mais próxima de realmente assistir juntos.",
-  "ALT_TRY_KOALASYNC": "Experimente o KoalaSync"
+  "ALT_TRY_KOALASYNC": "Experimente o KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "Controle do anfitrião",
+  "MOCK_HOST_CONTROL_TOGGLE": "Apenas eu posso controlar a reprodução"
 }
diff --git a/website/locales/pt.json b/website/locales/pt.json
index 2460312..d61a4bb 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Porquê o KoalaSync?",
   "WHY_SUBTITLE": "Sincronização fiável, máxima privacidade e uso simples.",
   "FEATURE_1_TITLE": "Controlo do host e sincronização",
-  "FEATURE_1_DESC": "Tu decides quem controla a reprodução. Escolhe entre controlo exclusivo do host, permissões para co-hosts ou acesso livre para todos.",
+  "FEATURE_1_DESC": "Tu decides quem controla a reprodução. Ativa o controlo do anfitrião para que apenas tu possas pausar e avançar, ou nomeia co-anfitriões.",
   "FEATURE_2_TITLE": "Maratonas sem interrupções",
   "FEATURE_2_DESC": "O KoalaSync deteta a mudança de episódios e pausa automaticamente até que todos tenham carregado o vídeo seguinte.",
   "FEATURE_3_TITLE": "Sem Contas / Privacidade Absoluta",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "O KoalaSync não substitui uma chamada de voz. Se quiser conversar enquanto assiste, utilize ainda o Discord, Teamspeak, Signal, WhatsApp ou qualquer outra aplicação que utilize normalmente.<br><br>Todos também precisam de ter acesso ao vídeo ou à página nos seus próprios dispositivos. O KoalaSync não ignora as subscrições, logins, DRM, restrições regionais ou regras de plataforma.<br><br>Atualmente, funciona apenas em navegadores de desktop, não tem chat ou recurso de voz integrados e a compatibilidade depende sempre do navegador e do leitor de vídeo.",
   "ALT_SCREEN_SUMMARY_TITLE": "Resumo",
   "ALT_SCREEN_SUMMARY_BODY": "Partilhar o ecrã é a opção mais simples quando se quer algo rápido e não se liga muito à qualidade, privacidade ou controlo individual. O KoalaSync é mais adequado quando todos devem assistir localmente nos seus próprios browsers e a sessão deve parecer mais como assistir em conjunto.",
-  "ALT_TRY_KOALASYNC": "Experimente o KoalaSync"
+  "ALT_TRY_KOALASYNC": "Experimente o KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "Controlo do anfitrião",
+  "MOCK_HOST_CONTROL_TOGGLE": "Apenas eu posso controlar a reprodução"
 }
diff --git a/website/locales/ru.json b/website/locales/ru.json
index c32b734..1e8adde 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Почему KoalaSync?",
   "WHY_SUBTITLE": "Создан для надежной синхронизации, конфиденциальности и простой настройки.",
   "FEATURE_1_TITLE": "Управление хоста и синхронизация",
-  "FEATURE_1_DESC": "Вы решаете, кто управляет воспроизведением. Выбирайте между полным контролем хоста, правами со-хостов или свободным доступом для всех.",
+  "FEATURE_1_DESC": "Вы решаете, кто управляет воспроизведением. Включите управление ведущего, чтобы только вы могли ставить на паузу и перемотку, или назначайте со-ведущих.",
   "FEATURE_2_TITLE": "Бесконечные марафоны",
   "FEATURE_2_DESC": "Синхронное автовоспроизведение. KoalaSync автоматически определяет переход на следующую серию и ждет, пока она загрузится у всех участников.",
   "FEATURE_3_TITLE": "Без аккаунтов и хранения данных",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync не заменяет голосовую связь. Если во время просмотра вы хотите общаться, используйте Discord, TeamSpeak, Signal, WhatsApp или любой другой привычный вам сервис.<br><br>Каждому участнику также необходим доступ к видео или веб-странице на собственном устройстве. KoalaSync не обходит требования к подписке, авторизации, DRM-защите, региональные ограничения или правила платформ.<br><br>На данный момент сервис работает только в браузерах на ПК, не имеет встроенного чата или функции голосовой связи, а совместимость зависит от конкретного браузера и видеоплеера.",
   "ALT_SCREEN_SUMMARY_TITLE": "Краткий обзор",
   "ALT_SCREEN_SUMMARY_BODY": "Демонстрация экрана — самый простой вариант, если нужно быстро всё организовать и вас не особо волнуют качество, конфиденциальность или возможность индивидуального управления. KoalaSync лучше подходит для ситуаций, когда каждый участник смотрит видео локально в своем браузере, а сам сеанс больше напоминает реальный совместный просмотр.",
-  "ALT_TRY_KOALASYNC": "Попробовать KoalaSync"
+  "ALT_TRY_KOALASYNC": "Попробовать KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "Управление ведущим",
+  "MOCK_HOST_CONTROL_TOGGLE": "Только я могу управлять воспроизведением"
 }
diff --git a/website/locales/tr.json b/website/locales/tr.json
index fd6fe12..9e53e85 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Neden KoalaSync?",
   "WHY_SUBTITLE": "Güvenilir eşitleme, önce gizlilik ilkesi ve kolay kurulum için tasarlandı.",
   "FEATURE_1_TITLE": "Oturum Sahibi Kontrolü ve Senkronizasyon",
-  "FEATURE_1_DESC": "Oynatmayı kimin kontrol edeceğine siz karar verin. Yalnızca oturum sahibi kontrolü, ortak yönetici izinleri veya herkes için serbest mod seçeneklerinden birini seçin.",
+  "FEATURE_1_DESC": "Oynatmayı kimin kontrol edeceğine siz karar verin. Yalnızca sizin durdurup sarabilmeniz için sunucu kontrolünü etkinleştirin veya ortak sunucular atayın.",
   "FEATURE_2_TITLE": "Kesintisiz İzleme Keyfi",
   "FEATURE_2_DESC": "Senkronize otomatik oynatma. KoalaSync, bölüm geçişlerini otomatik olarak algılar ve tüm bağlantılar bir sonraki videoyu başarıyla yükleyene kadar oynatmayı bekletir.",
   "FEATURE_3_TITLE": "Sıfır Hesap / Saf Gizlilik",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync, sesli görüşmenin yerini tutmaz. İzleme sırasında konuşmak isterseniz, yine Discord, Teamspeak, Signal, WhatsApp veya normalde kullandığınız herhangi bir aracı kullanmaya devam edebilirsiniz.<br><br>Ayrıca herkesin ilgili videoya veya sayfaya kendi cihazından erişebilmesi gerekir. KoalaSync; abonelikleri, oturum açma işlemlerini, DRM korumalarını, bölgesel kısıtlamaları veya platform kurallarını devre dışı bırakmaz.<br><br>Şu anda yalnızca masaüstü tarayıcılarında çalışır; yerleşik bir sohbet veya sesli görüşme özelliği yoktur ve uyumluluk her zaman kullanılan tarayıcıya ve video oynatıcıya bağlıdır.",
   "ALT_SCREEN_SUMMARY_TITLE": "Özet",
   "ALT_SCREEN_SUMMARY_BODY": "Hızlı bir çözüm aradığınızda ve kalite, gizlilik ya da bireysel kontrol konularına çok önem vermediğinizde, ekran paylaşımı en basit seçenektir. Herkesin içeriği kendi tarayıcısında yerel olarak izlemesi gereken ve oturumun gerçekten birlikte izliyormuş hissi verdiği durumlarda ise KoalaSync daha uygun bir tercihtir.",
-  "ALT_TRY_KOALASYNC": "KoalaSync'i Deneyin"
+  "ALT_TRY_KOALASYNC": "KoalaSync'i Deneyin",
+  "MOCK_HOST_CONTROL_LABEL": "Sunucu Kontrolü",
+  "MOCK_HOST_CONTROL_TOGGLE": "Oynatmayı yalnızca ben kontrol edebilirim"
 }
diff --git a/website/locales/uk.json b/website/locales/uk.json
index a8b7347..9ac0164 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "Чому KoalaSync?",
   "WHY_SUBTITLE": "Створено для надійної синхронізації, конфіденційності та простого налаштування.",
   "FEATURE_1_TITLE": "Керування хоста та синхронізація",
-  "FEATURE_1_DESC": "Ви вирішуєте, хто керує відтворенням. Вибирайте між повним контролем хоста, дозволами для співхостів або вільним режимом для всіх.",
+  "FEATURE_1_DESC": "Ви вирішуєте, хто керує відтворенням. Увімкніть керування ведучого, щоб тільки ви могли призупиняти та перемотувати відео, або призначайте співведучих.",
   "FEATURE_2_TITLE": "Нескінченне споглядання",
   "FEATURE_2_DESC": "Автоматичне відтворення синхронізовано. KoalaSync автоматично визначає переходи епізодів і утримує відтворення, доки всі однорангові пристрої успішно не завантажать наступне відео.",
   "FEATURE_3_TITLE": "Нуль облікових записів / чиста конфіденційність",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync не замінює голосовий дзвінок. Якщо ви хочете розмовляти під час перегляду, ви все одно використовуєте Discord, Teamspeak, Signal, WhatsApp або будь-який інший додаток, який ви зазвичай використовуєте.<br><br>Кожному також потрібен доступ до відео або сторінки на власному пристрої. KoalaSync не обходить підписки, вхід, DRM, регіональні обмеження чи правила платформи.<br><br>Наразі він доступний лише для браузера на комп'ютері, не має вбудованої функції чату чи голосового зв'язку, а сумісність завжди залежить від браузера та відеоплеєра.",
   "ALT_SCREEN_SUMMARY_TITLE": "Підсумок",
   "ALT_SCREEN_SUMMARY_BODY": "Спільний доступ до екрана – це найпростіший варіант, коли ви просто хочете чогось швидкого і не дуже переймаєтеся якістю, конфіденційністю чи індивідуальним контролем. KoalaSync краще підходить, коли кожен має дивитися локально у своєму власному браузері, і сеанс має більше нагадувати спільний перегляд.",
-  "ALT_TRY_KOALASYNC": "Спробуйте KoalaSync"
+  "ALT_TRY_KOALASYNC": "Спробуйте KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "Керування ведучим",
+  "MOCK_HOST_CONTROL_TOGGLE": "Тільки я можу керувати відтворенням"
 }
diff --git a/website/locales/zh.json b/website/locales/zh.json
index abdc1e5..550d3e6 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -43,7 +43,7 @@
   "WHY_TITLE": "为什么是KoalaSync？",
   "WHY_SUBTITLE": "专为可靠的同步、隐私优先的设计和轻松的设置而打造。",
   "FEATURE_1_TITLE": "房主控制与同步",
-  "FEATURE_1_DESC": "您可以自主决定谁来控制播放。在房主独占控制、协同房主权限或所有人自由操作模式之间进行选择。",
+  "FEATURE_1_DESC": "您可以自主决定谁来控制播放。启用主持人控制以仅允许您进行暂停和快进，或在成员列表中指定共同主持人。",
   "FEATURE_2_TITLE": "无尽的狂欢",
   "FEATURE_2_DESC": "自动同步播放。 KoalaSync 自动检测剧集转换并保持播放，直到所有对等方都成功加载下一个视频。",
   "FEATURE_3_TITLE": "零账户/纯粹隐私",
@@ -212,5 +212,7 @@
   "ALT_SCREEN_LIMITS_BODY": "KoalaSync 无法替代语音通话。如果您想在观看的同时进行交流，仍可使用 Discord、Teamspeak、Signal、WhatsApp 或您常用的任何通讯工具。<br><br>此外，每位参与者都需要在各自的设备上访问相应的视频或网页。KoalaSync 无法绕过订阅、登录验证、DRM（数字版权管理）、地域限制或平台规则。<br><br>该工具目前仅支持桌面端浏览器，不包含内置聊天或语音功能；其兼容性取决于具体的浏览器和视频播放器。",
   "ALT_SCREEN_SUMMARY_TITLE": "摘要",
   "ALT_SCREEN_SUMMARY_BODY": "如果您追求快速便捷，且不太在意画质、隐私或个性化控制，那么屏幕共享是最简单的选择。而当您希望每位参与者都在各自的浏览器中观看，并营造出一种真正“共同观看”的氛围时，KoalaSync 则是更理想的方案。",
-  "ALT_TRY_KOALASYNC": "试用 KoalaSync"
+  "ALT_TRY_KOALASYNC": "试用 KoalaSync",
+  "MOCK_HOST_CONTROL_LABEL": "主持人控制",
+  "MOCK_HOST_CONTROL_TOGGLE": "只有我可以控制播放"
 }
diff --git a/website/style.css b/website/style.css
index 19e89d1..34c926e 100644
--- a/website/style.css
+++ b/website/style.css
@@ -3815,45 +3815,62 @@ header[id] {
     font-weight: 700;
 }
 
-.bento-mockup-options {
-    display: flex;
-    gap: 0.5rem;
-    width: 100%;
-}
-
-.bento-option {
-    flex: 1;
+.bento-mockup-row {
     display: flex;
     align-items: center;
-    justify-content: center;
-    gap: 6px;
-    font-size: 0.72rem;
-    font-weight: 600;
-    padding: 6px 10px;
-    border-radius: 8px;
-    background: rgba(255, 255, 255, 0.02);
-    border: 1px solid rgba(255, 255, 255, 0.04);
-    color: var(--text-muted);
-    transition: all 0.25s ease;
-    white-space: nowrap;
-}
-
-.bento-option.active {
-    background: rgba(99, 102, 241, 0.12);
-    border: 1px solid rgba(99, 102, 241, 0.35);
+    justify-content: space-between;
+    gap: 12px;
+    font-size: 0.75rem;
     color: white;
-    box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
+    font-weight: 600;
+    margin-top: 2px;
 }
 
-.bento-option .option-dot {
-    width: 6px;
-    height: 6px;
+/* Custom switch toggle representation */
+.bento-switch-wrap {
+    position: relative;
+    display: inline-block;
+    width: 28px;
+    height: 16px;
+    flex-shrink: 0;
+}
+
+.bento-switch-wrap input {
+    opacity: 0;
+    width: 0;
+    height: 0;
+}
+
+.bento-switch-slider {
+    position: absolute;
+    cursor: default;
+    top: 0; left: 0; right: 0; bottom: 0;
+    background-color: rgba(255, 255, 255, 0.1);
+    border: 1px solid rgba(255, 255, 255, 0.15);
+    border-radius: 16px;
+    transition: .3s;
+}
+
+.bento-switch-slider:before {
+    position: absolute;
+    content: "";
+    height: 10px;
+    width: 10px;
+    left: 2px;
+    bottom: 2px;
+    background-color: #94a3b8;
     border-radius: 50%;
-    background: rgba(255, 255, 255, 0.25);
-    transition: background 0.25s ease;
+    transition: .3s;
 }
 
-.bento-option.active .option-dot {
-    background: var(--accent);
+.bento-switch-wrap input:checked + .bento-switch-slider {
+    background-color: rgba(99, 102, 241, 0.25);
+    border-color: rgba(99, 102, 241, 0.6);
+    box-shadow: 0 0 8px rgba(99, 102, 241, 0.3);
+}
+
+.bento-switch-wrap input:checked + .bento-switch-slider:before {
+    transform: translateX(12px);
+    background-color: var(--accent);
     box-shadow: 0 0 6px var(--accent-glow);
 }
diff --git a/website/template.html b/website/template.html
index 571b323..5d57f39 100644
--- a/website/template.html
+++ b/website/template.html
@@ -816,17 +816,13 @@
                     <div class="bento-content-wrap">
                         <p>{{FEATURE_1_DESC}}</p>
                         <div class="bento-host-control-mockup">
-                            <div class="bento-mockup-header">Host Control Mode</div>
-                            <div class="bento-mockup-options">
-                                <div class="bento-option active">
-                                    <span class="option-dot"></span> Host Only
-                                </div>
-                                <div class="bento-option">
-                                    <span class="option-dot"></span> Co-Hosts
-                                </div>
-                                <div class="bento-option">
-                                    <span class="option-dot"></span> Free For All
-                                </div>
+                            <div class="bento-mockup-header">{{MOCK_HOST_CONTROL_LABEL}}</div>
+                            <div class="bento-mockup-row">
+                                <span>{{MOCK_HOST_CONTROL_TOGGLE}}</span>
+                                <label class="bento-switch-wrap">
+                                    <input type="checkbox" checked disabled>
+                                    <span class="bento-switch-slider"></span>
+                                </label>
                             </div>
                         </div>
                     </div>

From 49712a715145037d6210e42483a042083c1cefcc Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:20:28 +0200
Subject: [PATCH 136/151] website: Bring lower browser mockup to foreground on
 hover

---
 website/style.css | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/website/style.css b/website/style.css
index 34c926e..7a7aa0f 100644
--- a/website/style.css
+++ b/website/style.css
@@ -3150,6 +3150,12 @@ header[id] {
     z-index: 3;
 }
 
+.demo-tab-a:hover {
+    z-index: 4;
+    transform: rotate(1.2deg) scale(1.02);
+    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.65), 0 0 20px rgba(99, 102, 241, 0.2);
+}
+
 /* Card B = the friend's window, lower left, tucked behind */
 .demo-tab-b {
     top: 142px;
@@ -3160,15 +3166,33 @@ header[id] {
     z-index: 2;
 }
 
+.demo-tab-b:hover {
+    z-index: 4;
+    transform: rotate(-1.6deg) scale(1.02);
+    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.65), 0 0 20px rgba(99, 102, 241, 0.2);
+}
+
 /* When the popup slides in from the right edge, the tabs step aside */
 .hero-demo-scene.popup-open .demo-tab-a {
     transform: rotate(1deg) translate(-48%, 2%) scale(0.88);
 }
 
+.hero-demo-scene.popup-open .demo-tab-a:hover {
+    z-index: 4;
+    transform: rotate(1deg) translate(-48%, 2%) scale(0.92);
+    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.65), 0 0 20px rgba(99, 102, 241, 0.2);
+}
+
 .hero-demo-scene.popup-open .demo-tab-b {
     transform: rotate(-1.6deg) scale(0.94);
 }
 
+.hero-demo-scene.popup-open .demo-tab-b:hover {
+    z-index: 4;
+    transform: rotate(-1.6deg) scale(0.98);
+    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.65), 0 0 20px rgba(99, 102, 241, 0.2);
+}
+
 .demo-tab-titlebar {
     display: flex;
     align-items: center;

From c8df8b6d08821c90942d29bb62f6bc6eceeb6917 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:22:10 +0200
Subject: [PATCH 137/151] website: Redesign Step 2 browser mockup as video
 player + select dropdown, and redesign Step 3 mockups to display matching
 forest movie

---
 website/style.css     | 138 ++++++++++++++++++++++++++++++++++++++++++
 website/template.html |  99 ++++++++++++++++++++----------
 2 files changed, 204 insertions(+), 33 deletions(-)

diff --git a/website/style.css b/website/style.css
index 7a7aa0f..7cf8fa1 100644
--- a/website/style.css
+++ b/website/style.css
@@ -3898,3 +3898,141 @@ header[id] {
     background-color: var(--accent);
     box-shadow: 0 0 6px var(--accent-glow);
 }
+
+/* --- Step 2 & Step 3 Visual Redesign Styles --- */
+
+/* Step 2 Browser video player mock */
+.illus-video-player-mock {
+    width: 85%;
+    height: 65%;
+    background: linear-gradient(135deg, #1e1b4b, #090514);
+    border: 1px solid rgba(255, 255, 255, 0.05);
+    border-radius: 8px;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    position: relative;
+    margin-top: 15px;
+}
+
+.video-mock-play-button {
+    width: 32px;
+    height: 32px;
+    border-radius: 50%;
+    background: rgba(255, 255, 255, 0.1);
+    border: 1px solid rgba(255, 255, 255, 0.2);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    color: white;
+    font-size: 0.8rem;
+    cursor: default;
+    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
+}
+
+.video-mock-timeline {
+    position: absolute;
+    bottom: 8px;
+    left: 8px;
+    right: 8px;
+    height: 3px;
+    background: rgba(255, 255, 255, 0.15);
+    border-radius: 2px;
+}
+
+.video-mock-timeline-fill {
+    width: 35%;
+    height: 100%;
+    background: var(--accent);
+    border-radius: 2px;
+}
+
+/* Step 2 extension popup dropdown alignment */
+.illus-extension-popup.drop-down {
+    top: 2.2rem;
+    right: 0.6rem;
+    width: 145px;
+    animation: popup-dropdown-float 4s ease-in-out infinite;
+}
+
+@keyframes popup-dropdown-float {
+    0%, 100% { transform: translateY(0); }
+    50% { transform: translateY(-3px); }
+}
+
+.status-badge-select {
+    background: rgba(99, 102, 241, 0.12);
+    color: #c7d2fe;
+    font-size: 0.58rem;
+    font-weight: 700;
+    padding: 2px 6px;
+    border-radius: 4px;
+    border: 1px solid rgba(99, 102, 241, 0.2);
+    display: inline-flex;
+    align-items: center;
+    text-transform: uppercase;
+    letter-spacing: 0.2px;
+}
+
+.popup-select-buttons {
+    display: flex;
+    flex-direction: column;
+    gap: 4px;
+    margin-top: 8px;
+    width: 100%;
+}
+
+.popup-select-btn {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 6px;
+    padding: 6px;
+    background: rgba(99, 102, 241, 0.15);
+    border: 1px solid rgba(99, 102, 241, 0.35);
+    border-radius: 6px;
+    font-size: 0.6rem;
+    font-weight: 700;
+    color: white;
+    cursor: default;
+    box-shadow: 0 0 8px rgba(99, 102, 241, 0.2);
+    animation: tab-select-pulse 1.8s infinite alternate;
+}
+
+@keyframes tab-select-pulse {
+    0% { box-shadow: 0 0 4px rgba(99, 102, 241, 0.2); transform: scale(1); }
+    100% { box-shadow: 0 0 12px rgba(99, 102, 241, 0.5); transform: scale(1.02); }
+}
+
+/* Step 3 forest movie continuous animation bindings */
+.step-illustration-3 .film-mtn-scroll {
+    animation: scrollBack 12s linear infinite !important;
+}
+.step-illustration-3 .film-mid-scroll {
+    animation: scrollMid 6s linear infinite !important;
+}
+.step-illustration-3 .film-fore-scroll {
+    animation: scrollFore 3s linear infinite !important;
+}
+.step-illustration-3 .film-bounce-ball {
+    animation: ballBounce 0.8s ease-in-out infinite !important;
+    transform-origin: bottom center;
+}
+
+@keyframes scrollBack {
+    0% { transform: translateX(0); }
+    100% { transform: translateX(-160px); }
+}
+@keyframes scrollMid {
+    0% { transform: translateX(0); }
+    100% { transform: translateX(-160px); }
+}
+@keyframes scrollFore {
+    0% { transform: translateX(0); }
+    100% { transform: translateX(-160px); }
+}
+@keyframes ballBounce {
+    0%, 100% { transform: translateY(0); }
+    50% { transform: translateY(-16px); }
+}
diff --git a/website/template.html b/website/template.html
index 5d57f39..ad6fec7 100644
--- a/website/template.html
+++ b/website/template.html
@@ -1102,7 +1102,7 @@
                                     <span class="illus-browser-dot"></span>
                                 </div>
                                 <div class="illus-browser-address-bar">
-                                    <span class="url-protocol">https://</span>sync.koalastuff.net
+                                    <span class="url-protocol">https://</span>youtube.com/watch?v=5xkoala
                                 </div>
                                 <div class="illus-browser-toolbar">
                                     <div class="illus-extension-btn active">
@@ -1111,42 +1111,29 @@
                                 </div>
                             </div>
                             <div class="illus-browser-content">
-                                <div class="illus-store-card">
-                                    <div class="illus-store-card-header">
-                                        <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo" class="illus-large-logo" width="30" height="30">
-                                        <div class="illus-store-info">
-                                            <div class="illus-store-title">KoalaSync</div>
-                                            <div class="illus-store-desc">
-                                                <span>{{STEP_1_ILLUS_DESC}}</span>
-                                            </div>
-                                        </div>
-                                    </div>
-                                    <div class="illus-store-buttons">
-                                        <div class="illus-store-btn chrome">
-                                            <img src="{{ASSET_PATH}}assets/chrome.svg" alt="Chrome Logo" width="12" height="12">
-                                            <span>{{STEP_1_ILLUS_DL_CHROME}}</span>
-                                        </div>
-                                        <div class="illus-store-btn firefox">
-                                            <img src="{{ASSET_PATH}}assets/firefox.svg" alt="Firefox Logo" width="12" height="12">
-                                            <span>{{STEP_1_ILLUS_DL_FIREFOX}}</span>
-                                        </div>
+                                <div class="illus-video-player-mock">
+                                    <div class="video-mock-play-button">▶</div>
+                                    <div class="video-mock-timeline">
+                                        <div class="video-mock-timeline-fill"></div>
                                     </div>
                                 </div>
                                 
-                                <!-- Floating Extension Success Popup -->
-                                <div class="illus-extension-popup">
+                                <!-- Floating Extension Success Popup (aligned as dropdown below icon) -->
+                                <div class="illus-extension-popup drop-down">
                                     <div class="popup-title">
                                         <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo" width="12" height="12">
                                         <span>KoalaSync</span>
                                     </div>
                                     <div class="popup-status">
-                                        <div class="status-badge-success">
-                                            <span class="status-check"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><polyline points="20 6 9 17 4 12"/></svg></span>
-                                            <span>{{STEP_1_ILLUS_ACTIVE}}</span>
+                                        <div class="status-badge-select">
+                                            <span>{{STEP_1_ILLUS_DESC}}</span>
                                         </div>
                                     </div>
-                                    <div class="popup-quick-start">
-                                        <span>{{STEP_1_ILLUS_READY}}</span>
+                                    <div class="popup-select-buttons">
+                                        <div class="popup-select-btn">
+                                            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round" width="10" height="10" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg>
+                                            <span>{{STEP_1_ILLUS_DL_CHROME}}</span>
+                                        </div>
                                     </div>
                                 </div>
                             </div>
@@ -1162,15 +1149,38 @@
                     <!-- Custom Step 3 Illustration -->
                     <div class="step-illustration-3" data-reveal>
                         <div class="illus-sync-theater">
-                            <!-- Player A (🐶 HappyDog) -->
+                            <!-- Player A (🐱 ChillCat) -->
                             <div class="illus-player-card player-a">
                                 <div class="player-header">
-                                    <span class="player-user">🐶 HappyDog</span>
+                                    <span class="player-user">🐱 ChillCat</span>
                                     <span class="player-badge active">PLAYING</span>
                                 </div>
                                 <div class="player-video-canvas">
-                                    <div class="player-play-pulse">▶</div>
                                     <div class="player-video-overlay"></div>
+                                    <svg class="demo-film" viewBox="0 0 160 90" preserveAspectRatio="xMidYMid slice" aria-hidden="true" xmlns="http://www.w3.org/2000/svg">
+                                        <g class="film-stars" fill="#e2e8f0">
+                                            <circle class="film-star" cx="18" cy="14" r="0.8"/>
+                                            <circle class="film-star" cx="42" cy="24" r="0.6"/>
+                                            <circle class="film-star" cx="64" cy="10" r="0.9"/>
+                                            <circle class="film-star" cx="90" cy="28" r="0.6"/>
+                                            <circle class="film-star" cx="134" cy="22" r="0.8"/>
+                                        </g>
+                                        <circle class="film-moon" cx="122" cy="26" r="7.5" fill="#f1f5f9" opacity="0.92"/>
+                                        <path class="film-mtn-scroll" d="M0,60 L30,45 L70,55 L110,40 L160,60 L190,45 L230,55 L270,40 L320,60 L320,92 L0,92 Z" fill="rgba(30,27,75,0.7)"/>
+                                        <g class="film-mid-scroll">
+                                            <polygon points="20,76 26,60 32,76" fill="rgba(49,46,129,0.55)"/>
+                                            <polygon points="55,78 63,52 71,78" fill="rgba(49,46,129,0.55)"/>
+                                            <polygon points="95,76 101,62 107,76" fill="rgba(49,46,129,0.55)"/>
+                                            <polygon points="135,77 144,55 153,77" fill="rgba(49,46,129,0.55)"/>
+                                            <path d="M0,76 Q40,73 80,76 T160,76 Q200,73 240,76 T320,76 L320,92 L0,92 Z" fill="rgba(49,46,129,0.55)"/>
+                                        </g>
+                                        <g class="film-fore-scroll">
+                                            <polygon points="40,84 52,48 64,84" fill="#090d16"/>
+                                            <polygon points="115,84 128,42 141,84" fill="#090d16"/>
+                                            <path d="M0,84 Q40,82 80,84 T160,84 L160,92 L0,92 Z" fill="#090d16"/>
+                                        </g>
+                                        <circle class="film-bounce-ball" cx="80" cy="80" r="4.5" fill="#fde047"/>
+                                    </svg>
                                 </div>
                                 <div class="player-controls">
                                     <span class="control-btn">⏸</span>
@@ -1192,15 +1202,38 @@
                                 </div>
                             </div>
                             
-                            <!-- Player B (LaptopKoala) -->
+                            <!-- Player B (🐶 HappyDog) -->
                             <div class="illus-player-card player-b">
                                 <div class="player-header">
-                                    <span class="player-user">💻 LaptopKoala</span>
+                                    <span class="player-user">🐶 HappyDog</span>
                                     <span class="player-badge active">PLAYING</span>
                                 </div>
                                 <div class="player-video-canvas">
-                                    <div class="player-play-pulse">▶</div>
                                     <div class="player-video-overlay"></div>
+                                    <svg class="demo-film" viewBox="0 0 160 90" preserveAspectRatio="xMidYMid slice" aria-hidden="true" xmlns="http://www.w3.org/2000/svg">
+                                        <g class="film-stars" fill="#e2e8f0">
+                                            <circle class="film-star" cx="18" cy="14" r="0.8"/>
+                                            <circle class="film-star" cx="42" cy="24" r="0.6"/>
+                                            <circle class="film-star" cx="64" cy="10" r="0.9"/>
+                                            <circle class="film-star" cx="90" cy="28" r="0.6"/>
+                                            <circle class="film-star" cx="134" cy="22" r="0.8"/>
+                                        </g>
+                                        <circle class="film-moon" cx="122" cy="26" r="7.5" fill="#f1f5f9" opacity="0.92"/>
+                                        <path class="film-mtn-scroll" d="M0,60 L30,45 L70,55 L110,40 L160,60 L190,45 L230,55 L270,40 L320,60 L320,92 L0,92 Z" fill="rgba(30,27,75,0.7)"/>
+                                        <g class="film-mid-scroll">
+                                            <polygon points="20,76 26,60 32,76" fill="rgba(49,46,129,0.55)"/>
+                                            <polygon points="55,78 63,52 71,78" fill="rgba(49,46,129,0.55)"/>
+                                            <polygon points="95,76 101,62 107,76" fill="rgba(49,46,129,0.55)"/>
+                                            <polygon points="135,77 144,55 153,77" fill="rgba(49,46,129,0.55)"/>
+                                            <path d="M0,76 Q40,73 80,76 T160,76 Q200,73 240,76 T320,76 L320,92 L0,92 Z" fill="rgba(49,46,129,0.55)"/>
+                                        </g>
+                                        <g class="film-fore-scroll">
+                                            <polygon points="40,84 52,48 64,84" fill="#090d16"/>
+                                            <polygon points="115,84 128,42 141,84" fill="#090d16"/>
+                                            <path d="M0,84 Q40,82 80,84 T160,84 L160,92 L0,92 Z" fill="#090d16"/>
+                                        </g>
+                                        <circle class="film-bounce-ball" cx="80" cy="80" r="4.5" fill="#fde047"/>
+                                    </svg>
                                 </div>
                                 <div class="player-controls">
                                     <span class="control-btn">⏸</span>

From 60c80ad7fb7276a7bcda25542962d11a864c245a Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:25:12 +0200
Subject: [PATCH 138/151] website: Synchronize and randomize mockup video
 titles, and fix Step 2 illustration to use realistic select video dropdown

---
 website/app.js             | 24 ++++++++++++++
 website/locales/de.json    |  4 ++-
 website/locales/en.json    |  4 ++-
 website/locales/es.json    |  4 ++-
 website/locales/fr.json    |  4 ++-
 website/locales/it.json    |  4 ++-
 website/locales/ja.json    |  4 ++-
 website/locales/ko.json    |  4 ++-
 website/locales/nl.json    |  4 ++-
 website/locales/pl.json    |  4 ++-
 website/locales/pt-BR.json |  4 ++-
 website/locales/pt.json    |  4 ++-
 website/locales/ru.json    |  4 ++-
 website/locales/tr.json    |  4 ++-
 website/locales/uk.json    |  4 ++-
 website/locales/zh.json    |  4 ++-
 website/style.css          | 67 ++++++++++++++++++++++++++------------
 website/template.html      | 34 +++++++++----------
 18 files changed, 131 insertions(+), 54 deletions(-)

diff --git a/website/app.js b/website/app.js
index e58f3d1..8c4435d 100644
--- a/website/app.js
+++ b/website/app.js
@@ -1,6 +1,30 @@
 // KoalaSync Landing Page Logic
 
 document.addEventListener('DOMContentLoaded', () => {
+    // Mockup Video Title Randomization on Load
+    const RANDOM_TITLES = [
+        { ep1: 'Stranger Things - S4E1', ep2: 'Stranger Things - S4E2' },
+        { ep1: 'Wednesday - S1E1', ep2: 'Wednesday - S1E2' },
+        { ep1: 'The Boys - S3E1', ep2: 'The Boys - S3E2' },
+        { ep1: 'The Mandalorian - S2E1', ep2: 'The Mandalorian - S2E2' },
+        { ep1: 'Arcane - S1E3', ep2: 'Arcane - S1E4' },
+        { ep1: 'Breaking Bad - S5E14', ep2: 'Breaking Bad - S5E15' },
+        { ep1: 'One Piece - S1E4', ep2: 'One Piece - S1E5' },
+        { ep1: 'House of the Dragon - S1E1', ep2: 'House of the Dragon - S1E2' }
+    ];
+
+    try {
+        const chosenTitle = RANDOM_TITLES[Math.floor(Math.random() * RANDOM_TITLES.length)];
+        document.querySelectorAll('.demo-title-text-ep1').forEach(el => {
+            el.textContent = chosenTitle.ep1;
+        });
+        document.querySelectorAll('.demo-title-text-ep2').forEach(el => {
+            el.textContent = chosenTitle.ep2;
+        });
+    } catch (err) {
+        console.warn(err);
+    }
+
     const safeGetLocalStorage = (key) => {
         try {
             return localStorage.getItem(key);
diff --git a/website/locales/de.json b/website/locales/de.json
index 8ce3b00..0cb327c 100644
--- a/website/locales/de.json
+++ b/website/locales/de.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "Bildschirmübertragung ist die einfachste Lösung, wenn es schnell gehen soll und Qualität, Privatsphäre oder individuelle Kontrolle nicht so wichtig sind. KoalaSync passt besser, wenn jeder lokal im eigenen Browser schauen soll und sich der Filmabend mehr wie wirklich gemeinsames Schauen anfühlen soll.",
   "ALT_TRY_KOALASYNC": "KoalaSync ausprobieren",
   "MOCK_HOST_CONTROL_LABEL": "Host-Steuerung",
-  "MOCK_HOST_CONTROL_TOGGLE": "Nur ich darf die Wiedergabe steuern"
+  "MOCK_HOST_CONTROL_TOGGLE": "Nur ich darf die Wiedergabe steuern",
+  "LABEL_SELECT_VIDEO": "Video auswählen",
+  "OPTION_SELECT_TAB": "-- Wähle einen Tab --"
 }
diff --git a/website/locales/en.json b/website/locales/en.json
index e68c2f6..50beaae 100644
--- a/website/locales/en.json
+++ b/website/locales/en.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "Screen sharing is the simplest option when you just want something quick and do not care much about quality, privacy or individual control. KoalaSync is a better fit when everyone should watch locally in their own browser and the session should feel more like actually watching together.",
   "ALT_TRY_KOALASYNC": "Try KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "Host Control",
-  "MOCK_HOST_CONTROL_TOGGLE": "Only I can control playback"
+  "MOCK_HOST_CONTROL_TOGGLE": "Only I can control playback",
+  "LABEL_SELECT_VIDEO": "Select Video",
+  "OPTION_SELECT_TAB": "-- Select a Tab --"
 }
diff --git a/website/locales/es.json b/website/locales/es.json
index a9276ed..aae2251 100644
--- a/website/locales/es.json
+++ b/website/locales/es.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "Compartir pantalla es la opción más sencilla cuando buscas algo rápido y no te preocupa demasiado la calidad, la privacidad o el control individual. KoalaSync es una mejor alternativa cuando cada persona debe ver el contenido localmente en su propio navegador y se busca una experiencia que realmente se asemeje a verlo juntos.",
   "ALT_TRY_KOALASYNC": "Prueba KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "Control del anfitrión",
-  "MOCK_HOST_CONTROL_TOGGLE": "Solo yo puedo controlar la reproducción"
+  "MOCK_HOST_CONTROL_TOGGLE": "Solo yo puedo controlar la reproducción",
+  "LABEL_SELECT_VIDEO": "Seleccionar video",
+  "OPTION_SELECT_TAB": "-- Selecciona una pestaña --"
 }
diff --git a/website/locales/fr.json b/website/locales/fr.json
index f981f3d..749be64 100644
--- a/website/locales/fr.json
+++ b/website/locales/fr.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "Le partage d'écran est la solution la plus simple si vous cherchez une méthode rapide sans accorder une grande importance à la qualité, à la confidentialité ou au contrôle individuel. KoalaSync est plus adapté lorsque chaque participant doit visionner le contenu localement dans son propre navigateur, pour une expérience se rapprochant davantage d'un véritable visionnage en commun.",
   "ALT_TRY_KOALASYNC": "Essayer KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "Contrôle de l'hôte",
-  "MOCK_HOST_CONTROL_TOGGLE": "Seul moi peut contrôler la lecture"
+  "MOCK_HOST_CONTROL_TOGGLE": "Seul moi peut contrôler la lecture",
+  "LABEL_SELECT_VIDEO": "Choisir une vidéo",
+  "OPTION_SELECT_TAB": "-- Choisir un onglet --"
 }
diff --git a/website/locales/it.json b/website/locales/it.json
index b1282e6..2689e0a 100644
--- a/website/locales/it.json
+++ b/website/locales/it.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "La condivisione dello schermo è l'opzione più semplice quando si cerca una soluzione rapida e non si dà molta importanza alla qualità, alla privacy o al controllo individuale. KoalaSync è la scelta ideale quando tutti devono guardare il contenuto localmente sul proprio browser, offrendo un'esperienza che ricorda più da vicino la visione condivisa reale.",
   "ALT_TRY_KOALASYNC": "Prova KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "Controllo host",
-  "MOCK_HOST_CONTROL_TOGGLE": "Solo io posso controllare la riproduzione"
+  "MOCK_HOST_CONTROL_TOGGLE": "Solo io posso controllare la riproduzione",
+  "LABEL_SELECT_VIDEO": "Seleziona Video",
+  "OPTION_SELECT_TAB": "-- Seleziona una Scheda --"
 }
diff --git a/website/locales/ja.json b/website/locales/ja.json
index 5fc0943..07644e6 100644
--- a/website/locales/ja.json
+++ b/website/locales/ja.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "画質やプライバシー、個別の操作性をあまり気にせず、手軽に済ませたい場合は「画面共有」が最も簡単な選択肢です。一方、参加者それぞれが自身のブラウザで動画を再生し、実際に同じ空間で一緒に視聴しているような感覚を重視するなら、KoalaSyncの方が適しています。",
   "ALT_TRY_KOALASYNC": "KoalaSyncを試す",
   "MOCK_HOST_CONTROL_LABEL": "ホスト操作",
-  "MOCK_HOST_CONTROL_TOGGLE": "自分だけが再生を操作できる"
+  "MOCK_HOST_CONTROL_TOGGLE": "自分だけが再生を操作できる",
+  "LABEL_SELECT_VIDEO": "ビデオを選択",
+  "OPTION_SELECT_TAB": "-- タブを選択してください --"
 }
diff --git a/website/locales/ko.json b/website/locales/ko.json
index 3dc51f9..36b9451 100644
--- a/website/locales/ko.json
+++ b/website/locales/ko.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "화질, 개인정보 보호, 개별 제어 기능 등을 크게 신경 쓰지 않고 간편하게 진행하고 싶을 때는 화면 공유가 가장 간단한 방법입니다. 반면, 모든 참가자가 각자의 브라우저에서 직접 영상을 시청하며 실제로 함께 보는 듯한 느낌을 원한다면 KoalaSync가 더 적합합니다.",
   "ALT_TRY_KOALASYNC": "KoalaSync 사용해 보기",
   "MOCK_HOST_CONTROL_LABEL": "호스트 제어",
-  "MOCK_HOST_CONTROL_TOGGLE": "나만 재생을 제어할 수 있음"
+  "MOCK_HOST_CONTROL_TOGGLE": "나만 재생을 제어할 수 있음",
+  "LABEL_SELECT_VIDEO": "비디오 선택",
+  "OPTION_SELECT_TAB": "-- 탭 선택 --"
 }
diff --git a/website/locales/nl.json b/website/locales/nl.json
index 280dc9e..cf7664e 100644
--- a/website/locales/nl.json
+++ b/website/locales/nl.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "Scherm delen is de eenvoudigste optie als je snel iets wilt doen en niet veel waarde hecht aan kwaliteit, privacy of individuele controle. KoalaSync is een betere keuze wanneer iedereen lokaal in de eigen browser moet kijken en de sessie meer moet aanvoelen als echt samen kijken.",
   "ALT_TRY_KOALASYNC": "Probeer KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "Hostbeheer",
-  "MOCK_HOST_CONTROL_TOGGLE": "Alleen ik mag de weergave bedienen"
+  "MOCK_HOST_CONTROL_TOGGLE": "Alleen ik mag de weergave bedienen",
+  "LABEL_SELECT_VIDEO": "Selecteer video",
+  "OPTION_SELECT_TAB": "-- Selecteer een tabblad --"
 }
diff --git a/website/locales/pl.json b/website/locales/pl.json
index b624479..f50984d 100644
--- a/website/locales/pl.json
+++ b/website/locales/pl.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "Udostępnianie ekranu to najprostsze rozwiązanie, gdy zależy Ci na szybkości, a kwestie jakości, prywatności czy indywidualnej kontroli nad odtwarzaniem nie są priorytetem. KoalaSync sprawdza się lepiej, gdy uczestnicy oglądają materiał lokalnie we własnych przeglądarkach, a sesja ma bardziej przypominać wspólny seans.",
   "ALT_TRY_KOALASYNC": "Wypróbuj KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "Kontrola hosta",
-  "MOCK_HOST_CONTROL_TOGGLE": "Tylko ja mogę sterować odtwarzaniem"
+  "MOCK_HOST_CONTROL_TOGGLE": "Tylko ja mogę sterować odtwarzaniem",
+  "LABEL_SELECT_VIDEO": "Wybierz wideo",
+  "OPTION_SELECT_TAB": "-- Wybierz kartę --"
 }
diff --git a/website/locales/pt-BR.json b/website/locales/pt-BR.json
index bb9d84f..5f7dcff 100644
--- a/website/locales/pt-BR.json
+++ b/website/locales/pt-BR.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "O compartilhamento de tela é a opção mais simples quando você quer algo rápido e não se preocupa muito com qualidade, privacidade ou controle individual. O KoalaSync é mais adequado quando todos devem assistir localmente em seus próprios navegadores e a sessão deve proporcionar uma experiência mais próxima de realmente assistir juntos.",
   "ALT_TRY_KOALASYNC": "Experimente o KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "Controle do anfitrião",
-  "MOCK_HOST_CONTROL_TOGGLE": "Apenas eu posso controlar a reprodução"
+  "MOCK_HOST_CONTROL_TOGGLE": "Apenas eu posso controlar a reprodução",
+  "LABEL_SELECT_VIDEO": "Selecionar vídeo",
+  "OPTION_SELECT_TAB": "-- Selecione uma aba --"
 }
diff --git a/website/locales/pt.json b/website/locales/pt.json
index d61a4bb..98166bd 100644
--- a/website/locales/pt.json
+++ b/website/locales/pt.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "Partilhar o ecrã é a opção mais simples quando se quer algo rápido e não se liga muito à qualidade, privacidade ou controlo individual. O KoalaSync é mais adequado quando todos devem assistir localmente nos seus próprios browsers e a sessão deve parecer mais como assistir em conjunto.",
   "ALT_TRY_KOALASYNC": "Experimente o KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "Controlo do anfitrião",
-  "MOCK_HOST_CONTROL_TOGGLE": "Apenas eu posso controlar a reprodução"
+  "MOCK_HOST_CONTROL_TOGGLE": "Apenas eu posso controlar a reprodução",
+  "LABEL_SELECT_VIDEO": "Selecionar Vídeo",
+  "OPTION_SELECT_TAB": "-- Selecionar um Separador --"
 }
diff --git a/website/locales/ru.json b/website/locales/ru.json
index 1e8adde..bec7686 100644
--- a/website/locales/ru.json
+++ b/website/locales/ru.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "Демонстрация экрана — самый простой вариант, если нужно быстро всё организовать и вас не особо волнуют качество, конфиденциальность или возможность индивидуального управления. KoalaSync лучше подходит для ситуаций, когда каждый участник смотрит видео локально в своем браузере, а сам сеанс больше напоминает реальный совместный просмотр.",
   "ALT_TRY_KOALASYNC": "Попробовать KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "Управление ведущим",
-  "MOCK_HOST_CONTROL_TOGGLE": "Только я могу управлять воспроизведением"
+  "MOCK_HOST_CONTROL_TOGGLE": "Только я могу управлять воспроизведением",
+  "LABEL_SELECT_VIDEO": "Выбрать видео",
+  "OPTION_SELECT_TAB": "-- Выберите вкладку --"
 }
diff --git a/website/locales/tr.json b/website/locales/tr.json
index 9e53e85..c41a878 100644
--- a/website/locales/tr.json
+++ b/website/locales/tr.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "Hızlı bir çözüm aradığınızda ve kalite, gizlilik ya da bireysel kontrol konularına çok önem vermediğinizde, ekran paylaşımı en basit seçenektir. Herkesin içeriği kendi tarayıcısında yerel olarak izlemesi gereken ve oturumun gerçekten birlikte izliyormuş hissi verdiği durumlarda ise KoalaSync daha uygun bir tercihtir.",
   "ALT_TRY_KOALASYNC": "KoalaSync'i Deneyin",
   "MOCK_HOST_CONTROL_LABEL": "Sunucu Kontrolü",
-  "MOCK_HOST_CONTROL_TOGGLE": "Oynatmayı yalnızca ben kontrol edebilirim"
+  "MOCK_HOST_CONTROL_TOGGLE": "Oynatmayı yalnızca ben kontrol edebilirim",
+  "LABEL_SELECT_VIDEO": "Video Seç",
+  "OPTION_SELECT_TAB": "-- Bir Sekme Seçin --"
 }
diff --git a/website/locales/uk.json b/website/locales/uk.json
index 9ac0164..f94bc3b 100644
--- a/website/locales/uk.json
+++ b/website/locales/uk.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "Спільний доступ до екрана – це найпростіший варіант, коли ви просто хочете чогось швидкого і не дуже переймаєтеся якістю, конфіденційністю чи індивідуальним контролем. KoalaSync краще підходить, коли кожен має дивитися локально у своєму власному браузері, і сеанс має більше нагадувати спільний перегляд.",
   "ALT_TRY_KOALASYNC": "Спробуйте KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "Керування ведучим",
-  "MOCK_HOST_CONTROL_TOGGLE": "Тільки я можу керувати відтворенням"
+  "MOCK_HOST_CONTROL_TOGGLE": "Тільки я можу керувати відтворенням",
+  "LABEL_SELECT_VIDEO": "Виберіть Відео",
+  "OPTION_SELECT_TAB": "-- Виберіть вкладку --"
 }
diff --git a/website/locales/zh.json b/website/locales/zh.json
index 550d3e6..54bb1e4 100644
--- a/website/locales/zh.json
+++ b/website/locales/zh.json
@@ -214,5 +214,7 @@
   "ALT_SCREEN_SUMMARY_BODY": "如果您追求快速便捷，且不太在意画质、隐私或个性化控制，那么屏幕共享是最简单的选择。而当您希望每位参与者都在各自的浏览器中观看，并营造出一种真正“共同观看”的氛围时，KoalaSync 则是更理想的方案。",
   "ALT_TRY_KOALASYNC": "试用 KoalaSync",
   "MOCK_HOST_CONTROL_LABEL": "主持人控制",
-  "MOCK_HOST_CONTROL_TOGGLE": "只有我可以控制播放"
+  "MOCK_HOST_CONTROL_TOGGLE": "只有我可以控制播放",
+  "LABEL_SELECT_VIDEO": "选择视频",
+  "OPTION_SELECT_TAB": "-- 选择一个选项卡 --"
 }
diff --git a/website/style.css b/website/style.css
index 7cf8fa1..0305a49 100644
--- a/website/style.css
+++ b/website/style.css
@@ -3975,34 +3975,59 @@ header[id] {
     letter-spacing: 0.2px;
 }
 
-.popup-select-buttons {
-    display: flex;
-    flex-direction: column;
-    gap: 4px;
-    margin-top: 8px;
+.popup-form-group {
+    margin-top: 6px;
+    width: 100%;
+    text-align: left;
+}
+
+.popup-form-label {
+    display: block;
+    font-size: 0.6rem;
+    color: var(--text-muted);
+    margin-bottom: 4px;
+    font-weight: 700;
+}
+
+.popup-select-wrapper {
+    position: relative;
     width: 100%;
 }
 
-.popup-select-btn {
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    gap: 6px;
-    padding: 6px;
-    background: rgba(99, 102, 241, 0.15);
-    border: 1px solid rgba(99, 102, 241, 0.35);
-    border-radius: 6px;
-    font-size: 0.6rem;
-    font-weight: 700;
+.popup-select-mock {
+    width: 100%;
+    background: var(--card);
+    border: 1px solid rgba(255, 255, 255, 0.12);
     color: white;
+    padding: 6px;
+    border-radius: 6px;
+    font-family: inherit;
+    font-size: 0.62rem;
+    outline: none;
+    appearance: none;
+    -webkit-appearance: none;
+    font-weight: 600;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
     cursor: default;
-    box-shadow: 0 0 8px rgba(99, 102, 241, 0.2);
-    animation: tab-select-pulse 1.8s infinite alternate;
+    display: block;
+    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.2);
 }
 
-@keyframes tab-select-pulse {
-    0% { box-shadow: 0 0 4px rgba(99, 102, 241, 0.2); transform: scale(1); }
-    100% { box-shadow: 0 0 12px rgba(99, 102, 241, 0.5); transform: scale(1.02); }
+.popup-cursor-pointer {
+    position: absolute;
+    bottom: -15px;
+    right: 15px;
+    font-size: 1.1rem;
+    pointer-events: none;
+    z-index: 10;
+    animation: pointer-click 1.6s infinite ease-in-out;
+}
+
+@keyframes pointer-click {
+    0%, 100% { transform: translate(0, 0) scale(1); }
+    50% { transform: translate(-3px, -3px) scale(0.9); }
 }
 
 /* Step 3 forest movie continuous animation bindings */
diff --git a/website/template.html b/website/template.html
index ad6fec7..6ceebd9 100644
--- a/website/template.html
+++ b/website/template.html
@@ -313,7 +313,7 @@
                     <div class="demo-tab-card demo-tab-a" id="demo-tab-a" role="button" tabindex="0" aria-pressed="false" aria-label="Press play or pause as 🐱 ChillCat — KoalaSync mirrors it to the other tab" title="Press play/pause here — KoalaSync mirrors it to the other tab">
                         <div class="demo-tab-titlebar">
                             <span class="demo-tab-dots" aria-hidden="true"><i></i><i></i><i></i></span>
-                            <span class="demo-tab-title"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="11" height="11" aria-hidden="true"><rect x="2" y="3" width="20" height="14" rx="2"/><path d="M8 21h8M12 17v4"/></svg> Stranger Things - S4E1</span>
+                            <span class="demo-tab-title"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="11" height="11" aria-hidden="true"><rect x="2" y="3" width="20" height="14" rx="2"/><path d="M8 21h8M12 17v4"/></svg> <span class="demo-title-text-ep1">Stranger Things - S4E1</span></span>
                             <span class="demo-tab-user demo-user-a">🐱 ChillCat</span>
                             <button class="demo-ext-launcher" id="demo-launcher" type="button" aria-expanded="true" title="Open or close the KoalaSync popup">
                                 <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="" width="16" height="16" loading="eager" decoding="async">
@@ -370,7 +370,7 @@
                     <div class="demo-tab-card demo-tab-b" id="demo-tab-b" role="button" tabindex="0" aria-pressed="false" aria-label="Press play or pause as 🐶 HappyDog — KoalaSync mirrors it to the other tab" title="Press play/pause here — KoalaSync mirrors it to the other tab">
                         <div class="demo-tab-titlebar">
                             <span class="demo-tab-dots" aria-hidden="true"><i></i><i></i><i></i></span>
-                            <span class="demo-tab-title"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="11" height="11" aria-hidden="true"><rect x="2" y="3" width="20" height="14" rx="2"/><path d="M8 21h8M12 17v4"/></svg> Stranger Things - S4E1</span>
+                            <span class="demo-tab-title"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="11" height="11" aria-hidden="true"><rect x="2" y="3" width="20" height="14" rx="2"/><path d="M8 21h8M12 17v4"/></svg> <span class="demo-title-text-ep1">Stranger Things - S4E1</span></span>
                             <span class="demo-tab-user demo-user-b">🐶 HappyDog</span>
                         </div>
                         <div class="demo-video">
@@ -468,7 +468,7 @@
                                             <span class="mock-peer-name">🐱 ChillCat</span>
                                                 <span class="mock-peer-meta">{{MOCK_05}}</span>
                                         </div>
-                                        <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</div>
+                                        <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> <span class="demo-title-text-ep1">Stranger Things - S4E1</span></div>
                                             <div class="mock-peer-status"><span style="color:#22c55e;">●</span> 0:55 • {{MOCK_06}}</div>
                                     </div>
                                     <div class="mock-peer-item demo-peer-b">
@@ -476,7 +476,7 @@
                                             <span class="mock-peer-name">🐶 HappyDog</span>
                                                 <span class="mock-peer-meta">{{MOCK_07}}</span>
                                         </div>
-                                        <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</div>
+                                        <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> <span class="demo-title-text-ep1">Stranger Things - S4E1</span></div>
                                             <div class="mock-peer-status"><span style="color:#22c55e;">●</span> 0:55 • {{MOCK_06}}</div>
                                     </div>
                                 </div>
@@ -493,7 +493,7 @@
                                 </label>
                                 <select class="mock-input" id="demo-video-select" style="width: 100%; box-sizing: border-box; background: var(--card); border: 1px solid #334155; color: white; padding: 8px; border-radius: 8px; font-family: inherit; font-size: 0.75rem; outline: none; cursor: default;">
                                     <option value="" class="demo-select-placeholder" selected hidden>{{DEMO_SELECT_PLACEHOLDER}}</option>
-                                    <option><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</option>
+                                    <option><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> <span class="demo-title-text-ep1">Stranger Things - S4E1</span></option>
                                 </select>
                             </div>
                             
@@ -546,7 +546,7 @@
                                     <span style="font-weight: 700; color: #fbbf24; font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.05em;">Episode Lobby</span>
                                 </div>
                                 <div style="font-size: 0.7rem; color: white; margin-bottom: 4px; font-weight: 600;">
-                                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E2
+                                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> <span class="demo-title-text-ep2">Stranger Things - S4E2</span>
                                 </div>
                                 <div style="font-size: 0.65rem; color: var(--text-muted); margin-bottom: 6px;">
                                     {{MOCK_16}}
@@ -566,7 +566,7 @@
                                             <span class="mock-peer-name">🐱 ChillCat</span>
                                                 <span class="mock-peer-meta">{{MOCK_05}}</span>
                                         </div>
-                                        <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</div>
+                                        <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> <span class="demo-title-text-ep1">Stranger Things - S4E1</span></div>
                                             <div class="mock-peer-status"><span style="color:#22c55e;">●</span> 0:55 • {{MOCK_06}}</div>
                                     </div>
                                     <div class="mock-peer-item demo-peer-b">
@@ -574,7 +574,7 @@
                                             <span class="mock-peer-name">🐶 HappyDog</span>
                                                 <span class="mock-peer-meta">{{MOCK_07}}</span>
                                         </div>
-                                        <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> Stranger Things - S4E1</div>
+                                        <div class="mock-peer-tab"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" width="12" height="12" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg> <span class="demo-title-text-ep1">Stranger Things - S4E1</span></div>
                                             <div class="mock-peer-status"><span style="color:#22c55e;">●</span> 0:55 • {{MOCK_06}}</div>
                                     </div>
                                 </div>
@@ -1118,21 +1118,19 @@
                                     </div>
                                 </div>
                                 
-                                <!-- Floating Extension Success Popup (aligned as dropdown below icon) -->
+                                <!-- Floating Extension Dropdown Popup (aligned below toolbar icon) -->
                                 <div class="illus-extension-popup drop-down">
                                     <div class="popup-title">
                                         <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo" width="12" height="12">
                                         <span>KoalaSync</span>
                                     </div>
-                                    <div class="popup-status">
-                                        <div class="status-badge-select">
-                                            <span>{{STEP_1_ILLUS_DESC}}</span>
-                                        </div>
-                                    </div>
-                                    <div class="popup-select-buttons">
-                                        <div class="popup-select-btn">
-                                            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round" width="10" height="10" aria-hidden="true"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"/><line x1="7" y1="2" x2="7" y2="22"/><line x1="17" y1="2" x2="17" y2="22"/><line x1="2" y1="12" x2="22" y2="12"/><line x1="2" y1="7" x2="7" y2="7"/><line x1="2" y1="17" x2="7" y2="17"/><line x1="17" y1="17" x2="22" y2="17"/><line x1="17" y1="7" x2="22" y2="7"/></svg>
-                                            <span>{{STEP_1_ILLUS_DL_CHROME}}</span>
+                                    <div class="popup-form-group">
+                                        <label class="popup-form-label">{{LABEL_SELECT_VIDEO}}</label>
+                                        <div class="popup-select-wrapper">
+                                            <select class="popup-select-mock" disabled>
+                                                <option class="demo-title-text-ep1">Stranger Things - S4E1</option>
+                                            </select>
+                                            <div class="popup-cursor-pointer">👆</div>
                                         </div>
                                     </div>
                                 </div>

From 5460ac3a0144a1fdfa7cd4e423e6b658cb2797ad Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:26:45 +0200
Subject: [PATCH 139/151] website: Add micro-animations including scroll
 progress bar, nav logo entrance spin, and button shine sweeps

---
 website/app.js        | 15 ++++++++++
 website/style.css     | 67 +++++++++++++++++++++++++++++++++++++++++++
 website/template.html |  3 +-
 3 files changed, 84 insertions(+), 1 deletion(-)

diff --git a/website/app.js b/website/app.js
index 8c4435d..7d57eb9 100644
--- a/website/app.js
+++ b/website/app.js
@@ -25,6 +25,21 @@ document.addEventListener('DOMContentLoaded', () => {
         console.warn(err);
     }
 
+    // Scroll Progress Indicator
+    try {
+        const progressBar = document.querySelector('.scroll-progress-bar');
+        if (progressBar) {
+            window.addEventListener('scroll', () => {
+                const winScroll = document.body.scrollTop || document.documentElement.scrollTop;
+                const height = document.documentElement.scrollHeight - document.documentElement.clientHeight;
+                const scrolled = height > 0 ? (winScroll / height) * 100 : 0;
+                progressBar.style.width = scrolled + '%';
+            }, { passive: true });
+        }
+    } catch (err) {
+        console.warn(err);
+    }
+
     const safeGetLocalStorage = (key) => {
         try {
             return localStorage.getItem(key);
diff --git a/website/style.css b/website/style.css
index 0305a49..848ee22 100644
--- a/website/style.css
+++ b/website/style.css
@@ -4061,3 +4061,70 @@ header[id] {
     0%, 100% { transform: translateY(0); }
     50% { transform: translateY(-16px); }
 }
+
+/* --- High Fidelity Micro-Animations & Identity additions --- */
+
+/* Scroll progress bar glowing line at the top */
+.scroll-progress-bar {
+    position: fixed;
+    top: 0;
+    left: 0;
+    height: 3px;
+    background: linear-gradient(90deg, var(--accent), #a855f7, #ec4899);
+    z-index: 9999;
+    width: 0%;
+    transition: width 0.1s ease-out;
+    box-shadow: 0 0 8px var(--accent-glow);
+}
+
+/* Navigation logo pop & spin */
+.nav-logo-img {
+    animation: logo-entrance 1.2s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
+    transform-origin: center;
+    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
+    will-change: transform, opacity;
+}
+
+.nav-logo-img:hover {
+    transform: scale(1.15) rotate(360deg);
+}
+
+@keyframes logo-entrance {
+    0% {
+        transform: scale(0) rotate(-180deg);
+        opacity: 0;
+    }
+    100% {
+        transform: scale(1) rotate(0deg);
+        opacity: 1;
+    }
+}
+
+/* Glowing reflection sweep on buttons */
+.btn-primary, .btn-firefox, .btn-secondary {
+    position: relative;
+    overflow: hidden;
+}
+
+.btn-primary::after, .btn-firefox::after, .btn-secondary::after {
+    content: '';
+    position: absolute;
+    top: 0;
+    left: -100%;
+    width: 100%;
+    height: 100%;
+    background: linear-gradient(
+        90deg,
+        rgba(255, 255, 255, 0) 0%,
+        rgba(255, 255, 255, 0.25) 50%,
+        rgba(255, 255, 255, 0) 100%
+    );
+    transform: skewX(-25deg);
+    transition: none;
+    pointer-events: none;
+}
+
+.btn-primary:hover::after, .btn-firefox:hover::after, .btn-secondary:hover::after {
+    left: 100%;
+    transition: left 0.8s ease-in-out;
+}
diff --git a/website/template.html b/website/template.html
index 6ceebd9..0d87d0b 100644
--- a/website/template.html
+++ b/website/template.html
@@ -201,6 +201,7 @@
     </noscript>
 </head>
 <body>
+    <div class="scroll-progress-bar"></div>
 
     <a class="skip-link" href="#main-content">Skip to main content</a>
 
@@ -213,7 +214,7 @@
     <nav>
         <div class="container nav-content">
             <div class="logo-area">
-                <img src="{{ASSET_PATH}}assets/NewLogoIcon_128.webp" srcset="{{ASSET_PATH}}assets/NewLogoIcon_64.webp 64w, {{ASSET_PATH}}assets/NewLogoIcon_128.webp 128w, {{ASSET_PATH}}assets/NewLogoIcon.webp 256w" sizes="64px" alt="KoalaSync Logo" width="64" height="64">
+                <img class="nav-logo-img" src="{{ASSET_PATH}}assets/NewLogoIcon_128.webp" srcset="{{ASSET_PATH}}assets/NewLogoIcon_64.webp 64w, {{ASSET_PATH}}assets/NewLogoIcon_128.webp 128w, {{ASSET_PATH}}assets/NewLogoIcon.webp 256w" sizes="64px" alt="KoalaSync Logo" width="64" height="64">
                 <span>KoalaSync</span>
                 <div id="nav-extension-status" class="nav-ext-status" style="display: none;">
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" width="12" height="12"><polyline points="20 6 9 17 4 12"></polyline></svg>

From ab6356c5ad631d7113dea29d35f8c091f54f655f Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:30:04 +0200
Subject: [PATCH 140/151] website: Replace long series name with shorter
 alternatives and randomize season 1 episode numbers dynamically

---
 website/app.js | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/website/app.js b/website/app.js
index 7d57eb9..acb5c2d 100644
--- a/website/app.js
+++ b/website/app.js
@@ -2,24 +2,28 @@
 
 document.addEventListener('DOMContentLoaded', () => {
     // Mockup Video Title Randomization on Load
-    const RANDOM_TITLES = [
-        { ep1: 'Stranger Things - S4E1', ep2: 'Stranger Things - S4E2' },
-        { ep1: 'Wednesday - S1E1', ep2: 'Wednesday - S1E2' },
-        { ep1: 'The Boys - S3E1', ep2: 'The Boys - S3E2' },
-        { ep1: 'The Mandalorian - S2E1', ep2: 'The Mandalorian - S2E2' },
-        { ep1: 'Arcane - S1E3', ep2: 'Arcane - S1E4' },
-        { ep1: 'Breaking Bad - S5E14', ep2: 'Breaking Bad - S5E15' },
-        { ep1: 'One Piece - S1E4', ep2: 'One Piece - S1E5' },
-        { ep1: 'House of the Dragon - S1E1', ep2: 'House of the Dragon - S1E2' }
+    const SERIES_NAMES = [
+        'Stranger Things',
+        'Wednesday',
+        'The Boys',
+        'Loki',
+        'Arcane',
+        'Dark',
+        'One Piece',
+        'Lupin'
     ];
 
     try {
-        const chosenTitle = RANDOM_TITLES[Math.floor(Math.random() * RANDOM_TITLES.length)];
+        const chosenSeries = SERIES_NAMES[Math.floor(Math.random() * SERIES_NAMES.length)];
+        const startEp = Math.floor(Math.random() * 7) + 1; // Random episode between 1 and 7
+        const ep1 = `${chosenSeries} - S1E${startEp}`;
+        const ep2 = `${chosenSeries} - S1E${startEp + 1}`;
+
         document.querySelectorAll('.demo-title-text-ep1').forEach(el => {
-            el.textContent = chosenTitle.ep1;
+            el.textContent = ep1;
         });
         document.querySelectorAll('.demo-title-text-ep2').forEach(el => {
-            el.textContent = chosenTitle.ep2;
+            el.textContent = ep2;
         });
     } catch (err) {
         console.warn(err);

From cb6d7eb98cf44a2c0d19e52ed107e799f331e78d Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:32:51 +0200
Subject: [PATCH 141/151] website: Reformat Step 2 illustration as a realistic
 vertical extension popup mockup in the Sync tab

---
 website/style.css     | 28 ++++++++++++++++++++
 website/template.html | 59 +++++++++++++++++++------------------------
 2 files changed, 54 insertions(+), 33 deletions(-)

diff --git a/website/style.css b/website/style.css
index 848ee22..2a16ba6 100644
--- a/website/style.css
+++ b/website/style.css
@@ -4128,3 +4128,31 @@ header[id] {
     left: 100%;
     transition: left 0.8s ease-in-out;
 }
+
+/* Step 2 mockup control panel styles */
+.popup-mock-controls {
+    display: flex;
+    gap: 8px;
+    margin-top: 4px;
+    width: 100%;
+}
+
+.popup-mock-btn {
+    flex: 1;
+    text-align: center;
+    padding: 6px;
+    border-radius: 6px;
+    font-size: 0.62rem;
+    font-weight: 700;
+    color: white;
+    cursor: default;
+    opacity: 0.75;
+}
+
+.popup-mock-btn.play {
+    background: #22c55e;
+}
+
+.popup-mock-btn.pause {
+    background: #ef4444;
+}
diff --git a/website/template.html b/website/template.html
index 0d87d0b..0d04a2d 100644
--- a/website/template.html
+++ b/website/template.html
@@ -1095,45 +1095,38 @@
                     </div>
                     <!-- Custom Step 2 Illustration -->
                     <div class="step-illustration-1" data-reveal>
-                        <div class="illus-browser-container">
-                            <div class="illus-browser-header">
-                                <div class="illus-browser-dots">
-                                    <span class="illus-browser-dot"></span>
-                                    <span class="illus-browser-dot"></span>
-                                    <span class="illus-browser-dot"></span>
+                        <div class="illus-popup-card">
+                            <div class="illus-popup-header">
+                                <div class="illus-popup-brand">
+                                    <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo" width="14" height="14">
+                                    <span>KoalaSync</span>
                                 </div>
-                                <div class="illus-browser-address-bar">
-                                    <span class="url-protocol">https://</span>youtube.com/watch?v=5xkoala
+                                <div class="illus-popup-version mockup-version">{{VERSION}}</div>
+                            </div>
+                            <div class="illus-popup-tabs">
+                                <div class="illus-popup-tab">
+                                    <span>{{STEP_2_ILLUS_ROOM}}</span>
                                 </div>
-                                <div class="illus-browser-toolbar">
-                                    <div class="illus-extension-btn active">
-                                        <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Extension" width="14" height="14">
-                                    </div>
+                                <div class="illus-popup-tab active">
+                                    <span>{{STEP_2_ILLUS_SYNC}}</span>
+                                </div>
+                                <div class="illus-popup-tab">
+                                    <span>{{STEP_2_ILLUS_SETTINGS}}</span>
                                 </div>
                             </div>
-                            <div class="illus-browser-content">
-                                <div class="illus-video-player-mock">
-                                    <div class="video-mock-play-button">▶</div>
-                                    <div class="video-mock-timeline">
-                                        <div class="video-mock-timeline-fill"></div>
+                            <div class="illus-popup-body">
+                                <div class="popup-form-group">
+                                    <label class="popup-form-label">{{LABEL_SELECT_VIDEO}}</label>
+                                    <div class="popup-select-wrapper">
+                                        <select class="popup-select-mock" disabled>
+                                            <option class="demo-title-text-ep1">Stranger Things - S4E1</option>
+                                        </select>
+                                        <div class="popup-cursor-pointer">👆</div>
                                     </div>
                                 </div>
-                                
-                                <!-- Floating Extension Dropdown Popup (aligned below toolbar icon) -->
-                                <div class="illus-extension-popup drop-down">
-                                    <div class="popup-title">
-                                        <img src="{{ASSET_PATH}}assets/NewLogoIcon.webp" alt="KoalaSync Logo" width="12" height="12">
-                                        <span>KoalaSync</span>
-                                    </div>
-                                    <div class="popup-form-group">
-                                        <label class="popup-form-label">{{LABEL_SELECT_VIDEO}}</label>
-                                        <div class="popup-select-wrapper">
-                                            <select class="popup-select-mock" disabled>
-                                                <option class="demo-title-text-ep1">Stranger Things - S4E1</option>
-                                            </select>
-                                            <div class="popup-cursor-pointer">👆</div>
-                                        </div>
-                                    </div>
+                                <div class="popup-mock-controls">
+                                    <div class="popup-mock-btn play">▶ Play</div>
+                                    <div class="popup-mock-btn pause">⏸ Pause</div>
                                 </div>
                             </div>
                         </div>

From 9690868e33ba904bd33d2a91eb7175da39495289 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:35:00 +0200
Subject: [PATCH 142/151] website: Add smooth FAQ accordion spring animation
 with rotation icon transition

---
 website/app.js    | 60 +++++++++++++++++++++++++++++++++++++++++++++++
 website/style.css |  7 +++---
 2 files changed, 64 insertions(+), 3 deletions(-)

diff --git a/website/app.js b/website/app.js
index acb5c2d..37324a2 100644
--- a/website/app.js
+++ b/website/app.js
@@ -1248,4 +1248,64 @@ document.addEventListener('DOMContentLoaded', () => {
     updateDynamicVersion();
     localizeHomeLinks();
     initLanguageSelectorValue();
+    // FAQ Accordion Transition (Web Animations API for smooth vertical spring height collapse/expand)
+    try {
+        document.querySelectorAll('.faq-item').forEach(details => {
+            const summary = details.querySelector('summary');
+            let isAnimating = false;
+
+            summary.addEventListener('click', (e) => {
+                e.preventDefault();
+                if (isAnimating) return;
+
+                const startHeight = details.offsetHeight;
+
+                if (details.hasAttribute('open')) {
+                    isAnimating = true;
+                    const computed = window.getComputedStyle(details);
+                    const padY = parseInt(computed.paddingTop) + parseInt(computed.paddingBottom);
+                    const borderY = parseInt(computed.borderTopWidth) + parseInt(computed.borderBottomWidth);
+                    const closedHeight = summary.offsetHeight + padY + (isNaN(borderY) ? 0 : borderY);
+
+                    const animation = details.animate([
+                        { height: startHeight + 'px' },
+                        { height: closedHeight + 'px' }
+                    ], {
+                        duration: 250,
+                        easing: 'cubic-bezier(0.16, 1, 0.3, 1)'
+                    });
+
+                    animation.onfinish = () => {
+                        details.removeAttribute('open');
+                        details.style.height = '';
+                        isAnimating = false;
+                    };
+                } else {
+                    isAnimating = true;
+                    details.setAttribute('open', '');
+                    const openHeight = details.offsetHeight;
+
+                    const computed = window.getComputedStyle(details);
+                    const padY = parseInt(computed.paddingTop) + parseInt(computed.paddingBottom);
+                    const borderY = parseInt(computed.borderTopWidth) + parseInt(computed.borderBottomWidth);
+                    const closedHeight = summary.offsetHeight + padY + (isNaN(borderY) ? 0 : borderY);
+
+                    const animation = details.animate([
+                        { height: closedHeight + 'px' },
+                        { height: openHeight + 'px' }
+                    ], {
+                        duration: 250,
+                        easing: 'cubic-bezier(0.16, 1, 0.3, 1)'
+                    });
+
+                    animation.onfinish = () => {
+                        details.style.height = '';
+                        isAnimating = false;
+                    };
+                }
+            });
+        });
+    } catch (err) {
+        console.warn(err);
+    }
 });
diff --git a/website/style.css b/website/style.css
index 2a16ba6..1a2e901 100644
--- a/website/style.css
+++ b/website/style.css
@@ -2890,6 +2890,7 @@ html:not(.lang-de) [lang="de"] {
     padding: 1.5rem 2rem;
     cursor: pointer;
     transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
+    overflow: hidden;
 }
 
 .faq-item:hover {
@@ -2922,13 +2923,13 @@ html:not(.lang-de) [lang="de"] {
     font-size: 1.4rem;
     color: var(--accent);
     font-weight: 300;
-    transition: transform 0.3s ease;
+    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
     flex-shrink: 0;
+    transform-origin: center;
 }
 
 .faq-item[open] summary::after {
-    content: '−';
-    transform: rotate(180deg);
+    transform: rotate(45deg);
 }
 
 .faq-item p {

From cece816e000b969955bc52edf800e711a4d414fc Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 11:57:33 +0200
Subject: [PATCH 143/151] website: Completely hide hero extension demo mockup
 wrapper on mobile screens (480px and below)

---
 website/style.css | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/website/style.css b/website/style.css
index 1a2e901..291b34e 100644
--- a/website/style.css
+++ b/website/style.css
@@ -4157,3 +4157,10 @@ header[id] {
 .popup-mock-btn.pause {
     background: #ef4444;
 }
+
+/* Mobile: completely hide the extension demo mockup on mobile viewports */
+@media (max-width: 480px) {
+    .hero-mockup-wrapper {
+        display: none !important;
+    }
+}

From e1e18aa26cd0623904fe8b4875e6dc26ebc6345c Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 12:09:16 +0200
Subject: [PATCH 144/151] website: Completely hide hero extension mockup
 wrapper on all stacked viewport sizes (768px and below)

---
 website/style.css | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/website/style.css b/website/style.css
index 291b34e..51f879c 100644
--- a/website/style.css
+++ b/website/style.css
@@ -4158,8 +4158,8 @@ header[id] {
     background: #ef4444;
 }
 
-/* Mobile: completely hide the extension demo mockup on mobile viewports */
-@media (max-width: 480px) {
+/* Mobile & Tablet Stacked: completely hide the extension demo mockup when it wraps below the text */
+@media (max-width: 768px) {
     .hero-mockup-wrapper {
         display: none !important;
     }

From f0328fb865fae79d38288b8d3a372d2b21993e05 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 12:11:30 +0200
Subject: [PATCH 145/151] website: Fall back to static extension mockup on
 medium screens (768px to 1024px) to prevent overlapping in narrower columns

---
 website/style.css | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/website/style.css b/website/style.css
index 51f879c..6729109 100644
--- a/website/style.css
+++ b/website/style.css
@@ -3582,8 +3582,8 @@ header[id] {
 
 .demo-hint.show { opacity: 0.75; }
 
-/* Mobile: fall back to the classic static popup mockup */
-@media (max-width: 768px) {
+/* Tablet/Small Desktop: fall back to the classic static popup mockup */
+@media (max-width: 1024px) {
     .hero-demo-scene,
     .hero-demo-scene.popup-open {
         height: auto;

From 5a53abc636d886a0da59aff51c276bba0bb9a5a3 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 12:13:34 +0200
Subject: [PATCH 146/151] website: Adjust extension-mockup wrapper height to
 600px to display the leave room button without scrolling

---
 website/style.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/website/style.css b/website/style.css
index 6729109..136949b 100644
--- a/website/style.css
+++ b/website/style.css
@@ -381,7 +381,7 @@ nav {
 .extension-mockup {
     width: 100%;
     max-width: 320px;
-    height: 520px;
+    height: 600px;
     background: #0f172a;
     border-radius: 20px;
     border: 1px solid rgba(255, 255, 255, 0.08);

From c5c140d31c96d41392974e092c33266ffef31bc6 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 12:14:35 +0200
Subject: [PATCH 147/151] website: Link label elements to their select elements
 via for/id attributes in mockups for better accessibility

---
 website/template.html | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/website/template.html b/website/template.html
index 0d04a2d..f76694a 100644
--- a/website/template.html
+++ b/website/template.html
@@ -489,7 +489,7 @@
                         <!-- SYNC TAB -->
                         <div id="mock-sync" class="mock-screen">
                             <div class="mock-form-group" style="margin-bottom: 12px;">
-                                <label class="mock-section-label" title="Choose the browser tab containing the video to sync">
+                                <label class="mock-section-label" for="demo-video-select" title="Choose the browser tab containing the video to sync">
                                     {{MOCK_09}}
                                 </label>
                                 <select class="mock-input" id="demo-video-select" style="width: 100%; box-sizing: border-box; background: var(--card); border: 1px solid #334155; color: white; padding: 8px; border-radius: 8px; font-family: inherit; font-size: 0.75rem; outline: none; cursor: default;">
@@ -1116,9 +1116,9 @@
                             </div>
                             <div class="illus-popup-body">
                                 <div class="popup-form-group">
-                                    <label class="popup-form-label">{{LABEL_SELECT_VIDEO}}</label>
+                                    <label class="popup-form-label" for="popup-select-mock-el">{{LABEL_SELECT_VIDEO}}</label>
                                     <div class="popup-select-wrapper">
-                                        <select class="popup-select-mock" disabled>
+                                        <select class="popup-select-mock" id="popup-select-mock-el" disabled>
                                             <option class="demo-title-text-ep1">Stranger Things - S4E1</option>
                                         </select>
                                         <div class="popup-cursor-pointer">👆</div>

From 2d94cc10e41f23858b7f388df1501aec3ecc2e33 Mon Sep 17 00:00:00 2001
From: KoalaDev <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 12:43:59 +0200
Subject: [PATCH 148/151] website: Fix popup not collapsing after demo
 walkthrough completes

Remove firstTake && !demoFinishedByStory guard from takeOver handler
so clicks outside the extension mockup always collapse the popup,
regardless of whether the automated walkthrough finished.
---
 website/app.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/website/app.js b/website/app.js
index 37324a2..c7140fa 100644
--- a/website/app.js
+++ b/website/app.js
@@ -784,9 +784,8 @@ document.addEventListener('DOMContentLoaded', () => {
             const firstTake = !userTookOver;
             userTookOver = true;
             finishDemo();
-            // if the story left the popup open and the user clicked elsewhere,
-            // tuck it away; clicks inside the popup (or on its icon) keep it
-            if (firstTake && !demoFinishedByStory && e && e.target &&
+            // Clicks outside the popup (and not on its launcher icon) always collapse the popup
+            if (e && e.target &&
                 !e.target.closest('.extension-mockup') &&
                 !e.target.closest('.demo-ext-launcher')) {
                 setPopupOpen(false);

From 0127d62a4952b200cc206385af0f3a2f37067f9e Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 13:09:11 +0200
Subject: [PATCH 149/151] Tighten hero demo layout

---
 website/app.js                     |  25 ++++-----
 website/assets/NewLogoIcon_64.webp | Bin 1282 -> 1282 bytes
 website/style.css                  |  86 ++++++++++++++++++-----------
 3 files changed, 66 insertions(+), 45 deletions(-)

diff --git a/website/app.js b/website/app.js
index c7140fa..72f5aad 100644
--- a/website/app.js
+++ b/website/app.js
@@ -559,13 +559,11 @@ document.addEventListener('DOMContentLoaded', () => {
             updateSyncUI();
         };
 
-        const pulse = () => {
-            ['a', 'b'].forEach(k => {
-                const el = tabs[k].root;
-                el.classList.remove('sync-pulse');
-                void el.offsetWidth; // restart the CSS animation
-                el.classList.add('sync-pulse');
-            });
+        const pulse = (key) => {
+            const el = tabs[key].root;
+            el.classList.remove('sync-pulse');
+            void el.offsetWidth; // restart the CSS animation
+            el.classList.add('sync-pulse');
         };
 
         const NAMES = { a: '🐱 ChillCat', b: '🐶 HappyDog' };
@@ -595,7 +593,7 @@ document.addEventListener('DOMContentLoaded', () => {
                 tabs[peerKey].t = tabs[sourceKey].t;
                 setPlaying(peerKey, playing);
                 renderTab(tabs[peerKey]);
-                pulse();
+                pulse(peerKey);
                 broadcasting = false;
             }, 90);
         };
@@ -614,7 +612,7 @@ document.addEventListener('DOMContentLoaded', () => {
                 tabs[peerKey].t = tabs[sourceKey].t;
                 renderTab(tabs[peerKey]);
                 flashSeek(tabs[peerKey].root);
-                pulse();
+                pulse(peerKey);
                 broadcasting = false;
             }, 90);
         };
@@ -647,18 +645,19 @@ document.addEventListener('DOMContentLoaded', () => {
 
         // The popup remote control acts as 🐱 ChillCat (tab A's user)
         playBtn.addEventListener('click', () => {
-            if (tabs.a.playing && tabs.b.playing) { pulse(); return; }
+            if (tabs.a.playing && tabs.b.playing) { pulse('b'); return; }
             broadcast('a', true);
         });
         pauseBtn.addEventListener('click', () => {
-            if (!tabs.a.playing && !tabs.b.playing) { pulse(); return; }
+            if (!tabs.a.playing && !tabs.b.playing) { pulse('b'); return; }
             broadcast('a', false);
         });
         if (forceSyncBtn) forceSyncBtn.addEventListener('click', () => {
             tabs.b.t = tabs.a.t = Math.max(tabs.a.t, tabs.b.t);
             renderTab(tabs.a);
             renderTab(tabs.b);
-            pulse();
+            pulse('a');
+            pulse('b');
         });
 
         ['a', 'b'].forEach(k => {
@@ -837,7 +836,7 @@ document.addEventListener('DOMContentLoaded', () => {
             if (userTookOver) return;
             setConnected(true);
             showToastB(toastB ? toastB.dataset.joined : '');
-            pulse();
+            pulse('b');
             await wait(900);
             if (userTookOver) return;
 
diff --git a/website/assets/NewLogoIcon_64.webp b/website/assets/NewLogoIcon_64.webp
index 660ffe28987821948744dafb8543121d3c9924ee..b1f4e43ede2c8f7304360593b419303eb296c0d2 100644
GIT binary patch
delta 175
zcmV;g08sye3W5r-j{*uP3wTE6hMStHV6&M5(*b{}TcN{oo+V6*L_a%Yrc!p2D?t#c
zOKs7r7~J4m$Dv1=mJaDq77GQQQ>rw7XYD@K>HoHNx9RHcyI5?-@+?sg|AU>&-G4md
zD$=Kt1fjo2eO@GCUGUCe6T6+N5TM#$rGCu%%0C_&{K4-ZrketIuEE5-AGFN%Jt!V_
dA-)%z8o>$A#3xK?o>SG_`v#;TD2(v9006+KRrvq_

delta 175
zcmV;g08sye3W5r-j{*uRbh!h)p{C}lShJY|(*b{`0tbHB-=W1lvs8JmTg?5P$6NU|
zO#PNrF}c9Ck3x?#EFIFIEEWqqr&MVE&)R*f)BkMkZ`0M?cCguv<XEB~{|7sly8d~@
zRi#fP2}6F4`n*WOyWyO`=q~VL0Ooo5E9abon$}J<ILvCrjPmN9T=EIoYf$hn#5QI8
dPuCa041mkIUP&THprz?#XmVYp*&&Yr001i7TQdLv

diff --git a/website/style.css b/website/style.css
index 136949b..e072b01 100644
--- a/website/style.css
+++ b/website/style.css
@@ -218,18 +218,19 @@ nav {
 .hero {
     min-height: 100vh;
     display: flex;
-    align-items: flex-start;
-    padding-top: 7.5rem;
-    padding-bottom: 3rem;
+    align-items: center;
+    padding-top: clamp(4.5rem, 8vh, 7rem);
+    padding-bottom: clamp(2rem, 5vh, 4rem);
 }
 
 .hero-grid {
     display: grid;
     grid-template-columns: 1.2fr 1fr;
-    align-items: start;
+    align-items: center;
     gap: 3rem;
     text-align: left;
     width: 100%;
+    min-height: calc(100svh - clamp(6.5rem, 13vh, 11rem));
 }
 
 @media (min-width: 1024px) {
@@ -381,7 +382,7 @@ nav {
 .extension-mockup {
     width: 100%;
     max-width: 320px;
-    height: 600px;
+    height: 528px;
     background: #0f172a;
     border-radius: 20px;
     border: 1px solid rgba(255, 255, 255, 0.08);
@@ -392,7 +393,7 @@ nav {
     overflow: hidden;
     position: relative;
     user-select: none;
-    padding: 16px;
+    padding: 14px;
     padding-bottom: 0;
     box-sizing: border-box;
 }
@@ -400,7 +401,7 @@ nav {
 .mock-header-row {
     display: flex;
     align-items: center;
-    margin-bottom: 16px;
+    margin-bottom: 12px;
     flex-shrink: 0;
 }
 
@@ -451,7 +452,7 @@ nav {
     background: #1e293b;
     padding: 4px;
     border-radius: 12px;
-    margin-bottom: 20px;
+    margin-bottom: 14px;
     flex-shrink: 0;
 }
 
@@ -462,7 +463,7 @@ nav {
     color: var(--text-muted);
     font-size: 0.75rem;
     font-weight: 600;
-    padding: 8px 4px;
+    padding: 7px 4px;
     cursor: pointer;
     border-radius: 8px;
     transition: color 0.2s, background-color 0.2s;
@@ -482,7 +483,7 @@ nav {
     flex: 1;
     overflow-y: auto;
     padding: 0;
-    padding-bottom: 16px;
+    padding-bottom: 12px;
     display: flex;
     flex-direction: column;
     font-size: 0.8rem;
@@ -496,7 +497,7 @@ nav {
 .mock-screen {
     display: none;
     flex-direction: column;
-    gap: 12px;
+    gap: 10px;
 }
 
 .mock-screen.active {
@@ -508,7 +509,7 @@ nav {
     background: #1e293b;
     border: 1px solid #334155;
     border-radius: 8px;
-    padding: 12px;
+    padding: 10px;
 }
 
 .mock-label {
@@ -517,7 +518,7 @@ nav {
     color: var(--text-muted);
     text-transform: uppercase;
     letter-spacing: 0.05em;
-    margin-bottom: 0.4rem;
+    margin-bottom: 0.3rem;
 }
 
 .mock-section-label {
@@ -585,7 +586,7 @@ nav {
 
 .mock-invite-box {
     display: flex;
-    gap: 0.4rem;
+    gap: 0.35rem;
 }
 
 .mock-invite-box input {
@@ -600,8 +601,8 @@ nav {
     flex-direction: column;
     align-items: center;
     justify-content: center;
-    gap: 12px;
-    padding: 34px 10px;
+    gap: 10px;
+    padding: 24px 10px;
     text-align: center;
 }
 .demo-room-empty img {
@@ -635,7 +636,7 @@ nav {
 .mock-peer-list {
     display: flex;
     flex-direction: column;
-    gap: 0.5rem;
+    gap: 0.4rem;
 }
 
 .mock-peer-item {
@@ -644,14 +645,14 @@ nav {
     background: rgba(255, 255, 255, 0.02);
     border: 1px solid rgba(255, 255, 255, 0.03);
     border-radius: 8px;
-    padding: 0.5rem 0.6rem;
+    padding: 0.45rem 0.55rem;
 }
 
 .mock-peer-header {
     display: flex;
     justify-content: space-between;
     align-items: center;
-    margin-bottom: 0.25rem;
+    margin-bottom: 0.2rem;
 }
 
 .mock-peer-name {
@@ -1395,11 +1396,11 @@ input:checked + .mock-slider:before {
     -webkit-backdrop-filter: blur(16px);
     border: 1px solid rgba(255, 255, 255, 0.12);
     border-radius: 16px;
-    padding: 0.95rem;
+    padding: 0.8rem;
     box-shadow: 0 18px 40px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
     display: flex;
     flex-direction: column;
-    gap: 0.75rem;
+    gap: 0.55rem;
     animation: popup-float 4s ease-in-out infinite;
     animation-delay: -1s;
 }
@@ -1454,17 +1455,17 @@ input:checked + .mock-slider:before {
 .illus-popup-body {
     display: flex;
     flex-direction: column;
-    gap: 0.75rem;
+    gap: 0.55rem;
     position: relative;
 }
 
 .illus-popup-btn {
     background: linear-gradient(135deg, var(--accent), #8b5cf6);
     border-radius: 8px;
-    padding: 9px; /* Scaled up padding */
+    padding: 7px 9px;
     color: white;
     font-weight: 700;
-    font-size: 0.7rem; /* Scaled up font */
+    font-size: 0.68rem;
     text-align: center;
     box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
     position: relative;
@@ -1498,8 +1499,8 @@ input:checked + .mock-slider:before {
     background: rgba(9, 13, 22, 0.4);
     border: 1px solid rgba(255, 255, 255, 0.05);
     border-radius: 8px;
-    padding: 7px 12px; /* Scaled up padding */
-    font-size: 0.56rem; /* Scaled up font */
+    padding: 6px 11px;
+    font-size: 0.54rem;
     color: var(--text-muted);
     font-weight: 700;
     text-transform: uppercase;
@@ -1518,13 +1519,13 @@ input:checked + .mock-slider:before {
 /* Floating Success Badge */
 .illus-floating-success {
     position: absolute;
-    bottom: -1.2rem;
+    bottom: -0.9rem;
     left: 50%;
     transform: translateX(-50%);
     background: rgba(9, 13, 22, 0.9);
     border: 1px solid rgba(34, 197, 94, 0.3);
     border-radius: 20px;
-    padding: 3px 10px;
+    padding: 2px 9px;
     display: flex;
     align-items: center;
     gap: 4px;
@@ -1986,6 +1987,16 @@ footer a:hover {
 }
 
 @media (max-width: 768px) {
+    .hero {
+        align-items: flex-start;
+        padding-top: 5.5rem;
+        padding-bottom: 2.5rem;
+    }
+
+    .hero-grid {
+        min-height: auto;
+    }
+
     .hero-grid, .step {
         grid-template-columns: minmax(0, 1fr);
         text-align: center;
@@ -2053,6 +2064,17 @@ footer a:hover {
     }
 }
 
+@media (min-width: 769px) and (max-height: 920px) {
+    .hero {
+        padding-top: clamp(3.75rem, 6vh, 5.5rem);
+        padding-bottom: clamp(1.5rem, 3vh, 2.75rem);
+    }
+
+    .hero-grid {
+        min-height: calc(100svh - 9.5rem);
+    }
+}
+
 /* Extra-narrow phones: make sure logo, language picker and the menu button
    never crowd each other in the header (kept comfortable down to ~320px). */
 @media (max-width: 380px) {
@@ -3175,22 +3197,22 @@ header[id] {
 
 /* When the popup slides in from the right edge, the tabs step aside */
 .hero-demo-scene.popup-open .demo-tab-a {
-    transform: rotate(1deg) translate(-48%, 2%) scale(0.88);
+    transform: rotate(1deg) translate(-44%, 20%) scale(0.88);
 }
 
 .hero-demo-scene.popup-open .demo-tab-a:hover {
     z-index: 4;
-    transform: rotate(1deg) translate(-48%, 2%) scale(0.92);
+    transform: rotate(1deg) translate(-44%, 20%) scale(0.92);
     box-shadow: 0 25px 50px rgba(0, 0, 0, 0.65), 0 0 20px rgba(99, 102, 241, 0.2);
 }
 
 .hero-demo-scene.popup-open .demo-tab-b {
-    transform: rotate(-1.6deg) scale(0.94);
+    transform: rotate(-1.6deg) translate(0, 14%) scale(0.94);
 }
 
 .hero-demo-scene.popup-open .demo-tab-b:hover {
     z-index: 4;
-    transform: rotate(-1.6deg) scale(0.98);
+    transform: rotate(-1.6deg) translate(0, 14%) scale(0.98);
     box-shadow: 0 25px 50px rgba(0, 0, 0, 0.65), 0 0 20px rgba(99, 102, 241, 0.2);
 }
 

From 14c9ab1d5e23ef23db9a9e9f78a6fe73dfc2203d Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 14:02:47 +0200
Subject: [PATCH 150/151] fix: Ensure hero heading has minimum distance from
 fixed nav bar across all languages

- Change .hero from align-items:center to flex-start so content starts from top
- Increase padding-top in short-viewport media query (<=920px height) to
  clamp(7.5rem, 10vh, 9rem) from clamp(3.75rem, 6vh, 5.5rem) so it always
  clears the ~96px nav bar
- Fix pre-existing lint errors: remove unused variables demoFinishedByStory,
  firstTake; add website/www to eslint ignores
---
 eslint.config.mjs |  2 +-
 website/app.js    |  4 ----
 website/style.css | 20 ++++++++++++++------
 3 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/eslint.config.mjs b/eslint.config.mjs
index 7902694..5b5c584 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -1,6 +1,6 @@
 export default [
   {
-    ignores: ["coverage/**", "dist/**", "node_modules/**", "scratch/**"]
+    ignores: ["coverage/**", "dist/**", "node_modules/**", "scratch/**", "website/www/**"]
   },
   {
     languageOptions: {
diff --git a/website/app.js b/website/app.js
index 72f5aad..fbc6327 100644
--- a/website/app.js
+++ b/website/app.js
@@ -767,8 +767,6 @@ document.addEventListener('DOMContentLoaded', () => {
         let userTookOver = false;
         let demoStarted = false;
         let demoFinished = false;
-        let demoFinishedByStory = false;
-
         const finishDemo = () => {
             if (demoFinished) return;
             demoFinished = true;
@@ -780,7 +778,6 @@ document.addEventListener('DOMContentLoaded', () => {
         };
 
         const takeOver = (e) => {
-            const firstTake = !userTookOver;
             userTookOver = true;
             finishDemo();
             // Clicks outside the popup (and not on its launcher icon) always collapse the popup
@@ -856,7 +853,6 @@ document.addEventListener('DOMContentLoaded', () => {
             if (!await step(progressA, 1300, () => seekTo('a', 0.62), 0.62)) return;
             if (!await step(tabs.a.root, 700)) return;
 
-            demoFinishedByStory = true;
             finishDemo();
         };
 
diff --git a/website/style.css b/website/style.css
index e072b01..8bfb276 100644
--- a/website/style.css
+++ b/website/style.css
@@ -218,19 +218,19 @@ nav {
 .hero {
     min-height: 100vh;
     display: flex;
-    align-items: center;
-    padding-top: clamp(4.5rem, 8vh, 7rem);
+    align-items: flex-start;
+    padding-top: clamp(8rem, 12vh, 10rem);
     padding-bottom: clamp(2rem, 5vh, 4rem);
 }
 
 .hero-grid {
     display: grid;
-    grid-template-columns: 1.2fr 1fr;
+    grid-template-columns: 1.55fr 0.75fr;
     align-items: center;
     gap: 3rem;
     text-align: left;
     width: 100%;
-    min-height: calc(100svh - clamp(6.5rem, 13vh, 11rem));
+    min-height: calc(100svh - 12.5rem);
 }
 
 @media (min-width: 1024px) {
@@ -250,7 +250,7 @@ nav {
 }
 
 .hero-text h1 {
-    font-size: 4.5rem;
+    font-size: clamp(3.3rem, 4.35vw, 4.4rem);
     font-weight: 800;
     line-height: 1.1;
     margin-bottom: 1.4rem;
@@ -273,6 +273,7 @@ nav {
     font-weight: 400;
     line-height: 1.6;
 }
+
 .hero-mascot-container {
     display: block;
     margin-bottom: -0.5rem;
@@ -2003,6 +2004,7 @@ footer a:hover {
     }
     .hero-text h1 {
         font-size: 2.5rem;
+        max-width: none;
     }
     .cta-group {
         justify-content: center;
@@ -2064,9 +2066,15 @@ footer a:hover {
     }
 }
 
+@media (min-width: 769px) and (max-width: 1200px) {
+    .hero-grid {
+        grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
+    }
+}
+
 @media (min-width: 769px) and (max-height: 920px) {
     .hero {
-        padding-top: clamp(3.75rem, 6vh, 5.5rem);
+        padding-top: clamp(7.5rem, 10vh, 9rem);
         padding-bottom: clamp(1.5rem, 3vh, 2.75rem);
     }
 

From 3fd02246ab0cb511995db1a787069ba4719d13df Mon Sep 17 00:00:00 2001
From: Timo <6156589+Shik3i@users.noreply.github.com>
Date: Fri, 3 Jul 2026 14:26:15 +0200
Subject: [PATCH 151/151] feat: Add llms.txt for AI crawler support

- Create website/llms.txt following llmstxt.org spec (H1, blockquote,
  H2 sections with link lists, Optional section)
- Include llms.txt in website build pipeline (generic files copy)
- Sections: Features, Download, Technical, Optional (alternatives,
  sitemap, privacy, imprint, join)
---
 website/build.cjs |  2 +-
 website/llms.txt  | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 website/llms.txt

diff --git a/website/build.cjs b/website/build.cjs
index 7a72ac2..f60cd1c 100644
--- a/website/build.cjs
+++ b/website/build.cjs
@@ -315,7 +315,7 @@ async function compile() {
     }
 
     // ── 5. Copy generic static files and verification files ──
-    const genericFiles = ['robots.txt', 'sitemap.xml', 'site.webmanifest', 'version.json'];
+    const genericFiles = ['robots.txt', 'sitemap.xml', 'site.webmanifest', 'version.json', 'llms.txt'];
     for (const file of genericFiles) {
         const src = path.join(websiteDir, file);
         const dest = path.join(wwwDir, file);
diff --git a/website/llms.txt b/website/llms.txt
new file mode 100644
index 0000000..1b8754c
--- /dev/null
+++ b/website/llms.txt
@@ -0,0 +1,33 @@
+# KoalaSync
+
+> Watch Netflix, YouTube, Twitch & any HTML5 video in perfect sync with friends. Free, open-source browser extension for Chrome and Firefox. No sign-up needed.
+
+KoalaSync is a privacy-first peer-to-peer video synchronization tool. It uses WebRTC for direct connections between peers — no video data ever passes through a server. The relay server is only used for signaling and optional room-based coordination. Self-hostable, MIT licensed.
+
+## Features
+
+- [Sync any HTML5 video](https://sync.koalastuff.net/): Works with Netflix, Emby, Jellyfin, YouTube, Twitch, Amazon Prime Video, Disney+, Crunchyroll, HBO Max and more
+- [Host & co-host controls](https://sync.koalastuff.net/#features): Synchronized play, pause, seek, host control mode, co-host roles
+- [Privacy-first](https://sync.koalastuff.net/#features): No accounts, no tracking, no data collection, peer-to-peer by design
+- [Available in 15 languages](https://sync.koalastuff.net/): English, Deutsch, Français, Español, Português, Italiano, Nederlands, Polski, Türkçe, Русский, 日本語, 한국어, 中文, Українська
+
+## Download
+
+- [Chrome Web Store](https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc): Install KoalaSync for Chrome, Edge, and other Chromium-based browsers
+- [Firefox Add-ons](https://addons.mozilla.org/de/firefox/addon/koalasync/): Install KoalaSync for Firefox
+- [GitHub Releases](https://github.com/Shik3i/KoalaSync/releases): Manual download and release notes
+
+## Technical
+
+- [Source code](https://github.com/Shik3i/KoalaSync): Full MIT-licensed source on GitHub (extension, server, website)
+- [Changelog](https://github.com/Shik3i/KoalaSync/blob/main/docs/CHANGELOG.md): Version history and release notes
+- [Self-hosting guide](https://sync.koalastuff.net/#self-hosting): Run your own relay server
+- [Server](https://sync.koalastuff.net/): Node.js WebSocket relay, port 54000
+
+## Optional
+
+- [Alternatives hub](https://sync.koalastuff.net/alternatives/): Comparison with Teleparty, Scener, other sync tools
+- [Privacy policy](https://sync.koalastuff.net/privacy.html): Data handling and privacy information
+- [Imprint](https://sync.koalastuff.net/imprint.html): Legal notice
+- [Sitemap](https://sync.koalastuff.net/sitemap.xml): Full site index
+- [Join a room](https://sync.koalastuff.net/join.html): Direct room join page