chore(release): v2.2.3 — artifact attestations, bugfixes, rate limit metrics

Updated the description and features of KoalaSync to emphasize privacy, ease of use, and support for various platforms.

.github/FUNDING.yml

@@ -0,0 +1,2 @@
+# These are supported funding model platforms
+ko_fi: koaladev

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,56 @@
+---
+name: 🐛 Bug Report
+about: Create a report to help us improve KoalaSync
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+> **⚠️ Required:** Before submitting, open the KoalaSync **Status** tab in the extension popup and click **"Copy Logs"**. Paste the full output below — it contains essential system info, connection state, and debug data needed to diagnose your issue.
+
+<details>
+<summary><b>📋 Copy Logs Output</b></summary>
+
+<!-- Paste the copied logs here -->
+
+</details>
+
+---
+
+### Describe the Bug
+
+A clear and concise description of what the bug is.
+
+### To Reproduce
+
+Steps to reproduce the behavior:
+
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+### Expected Behavior
+
+A clear and concise description of what you expected to happen.
+
+### Actual Behavior
+
+A clear and concise description of what actually happened.
+
+### Screenshots / Screen Recordings
+
+If applicable, add screenshots or recordings to help explain your problem.
+
+### Environment
+
+- **Browser:** (e.g. Chrome 125, Firefox 128)
+- **Extension Version:** (visible at the bottom of the Settings tab)
+- **OS:** (e.g. Windows 11, macOS 14.5)
+- **Self-Hosted Server?:** (yes / no — if yes, provide server version)
+- **Website/Platform:** (e.g. YouTube, Netflix, Twitch, Jellyfin, Emby)
+
+### Additional Context
+
+Add any other context about the problem here (e.g. network setup, VPN usage, multiple monitors, etc.).

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,31 @@
+---
+name: 🚀 Feature Request
+about: Suggest a new feature or enhancement for KoalaSync
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+### Problem Description
+
+A clear and concise description of the problem or limitation you're encountering. What's missing or what could be improved?
+
+*As a user, I want to ... so that ...*
+
+### Proposed Solution
+
+Describe the feature you'd like to see. How should it work? Be as specific as possible.
+
+### Use Cases & Benefits
+
+- **When would you use this?** (e.g., specific websites, workflows, setups)
+- **What value does it add?** (e.g., saves time, enables new functionality, improves UX)
+
+### Alternatives Considered
+
+What workarounds or alternative approaches have you tried? Are there other ways to achieve a similar result?
+
+### Additional Context
+
+Add any other context, sketches, mockups, or references (e.g., links to similar features in other projects).

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,45 @@
+<!--
+Thanks for contributing to KoalaSync!
+
+Please read the CONTRIBUTING.md and CODE_OF_CONDUCT.md before submitting.
+By submitting this PR, you agree to abide by our code of conduct.
+
+Use conventional commits for the title: feat:, fix:, docs:, refactor:, chore:
+-->
+
+### Description
+
+<!-- What does this PR do and why? Link to relevant issue or motivation. -->
+
+Closes #
+
+### Type of Change
+
+- [ ] Bug fix (non-breaking change that fixes an issue)
+- [ ] New feature (non-breaking change that adds functionality)
+- [ ] Breaking change (fix or feature that alters existing behavior)
+- [ ] Refactoring (no functional changes)
+- [ ] Documentation update
+- [ ] Build, dependencies, or CI
+
+### How Has This Been Tested?
+
+<!-- Describe the tests you ran and the environments (browsers, OS, etc.) -->
+
+- [ ] Tested on Chrome
+- [ ] Tested on Firefox
+- [ ] `npm run lint` passes with zero errors and zero warnings
+- [ ] `node -c` passes on all modified `.js` files
+
+### Checklist
+
+- [ ] My code follows the project's style guidelines
+- [ ] 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
+- [ ] No new warnings, secrets, or hardcoded credentials introduced
+
+### Additional Context
+
+<!-- Screenshots, migration notes, performance data, etc. -->

.github/workflows/release.yml

@@ -11,6 +11,8 @@ jobs:
     permissions:
       contents: write
       packages: write
+      id-token: write
+      attestations: write
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -35,6 +37,7 @@ jobs:
             type=ref,event=tag
 
       - name: Build and push Docker image
+        id: build
         uses: docker/build-push-action@v5
         with:
           context: .
@@ -44,10 +47,19 @@ jobs:
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
 
+      - name: Generate artifact attestation
+        uses: actions/attest@v4
+        with:
+          subject-name: ghcr.io/${{ github.repository }}
+          subject-digest: ${{ steps.build.outputs.digest }}
+          push-to-registry: true
+
   release-extension:
     runs-on: ubuntu-latest
     permissions:
       contents: write
+      id-token: write
+      attestations: write
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -78,13 +90,21 @@ jobs:
           jq -n --arg v "$VERSION" --arg d "$DATE" '{version: $v, date: $d}' > website/version.json
           echo "  ✓ website/version.json -> version $VERSION, date $DATE"
 
+          # 5. website/template.html — SoftwareApplication schema
+          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
+          echo "  ✓ README.md -> v$VERSION"
+
           echo "Version injection complete."
 
       - name: Commit and push version updates back to main
         run: |
           git config --local user.email "action@github.com"
           git config --local user.name "GitHub Action"
-          git add extension/manifest.base.json shared/constants.js package.json website/version.json
+          git add extension/manifest.base.json shared/constants.js package.json website/version.json website/template.html README.md
           git commit -m "chore(release): update versions to $GITHUB_REF_NAME [skip ci]" || echo "No changes to commit"
           git push origin HEAD:main
         env:
@@ -95,6 +115,21 @@ jobs:
           npm install
           npm run build:extension
 
+      - name: Generate artifact attestation for extensions
+        uses: actions/attest@v4
+        with:
+          subject-path: dist/koalasync-*.zip
+
+      - name: Build Website
+        run: node website/build.js
+
+      - name: Upload Website Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: website-www
+          path: website/www/
+          if-no-files-found: error
+
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v1
         with:

.gitignore

@@ -40,5 +40,8 @@ coverage/
 # the root 'shared/' remains the Single Source of Truth.
 extension/shared/
 
+# Auto-generated website build output
+website/www/
+
 # Temporary scratch files
 scratch/

CODE_OF_CONDUCT.md

@@ -0,0 +1,131 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Project maintainers are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Project maintainers have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official email address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the project maintainer at **koaladev@koalamail.rocks**.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All project maintainers are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Project maintainers will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from project maintainers, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series of
+actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or permanent
+ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior, harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.1, available at
+[https://www.contributor-covenant.org/version/2/1/code_of_conduct.html][v2.1].
+
+Community Impact Guidelines were inspired by
+[Mozilla's code of conduct enforcement ladder][Mozilla CoC].
+
+For answers to common questions about this code of conduct, see the FAQ at
+[https://www.contributor-covenant.org/faq][FAQ]. Translations are available at
+[https://www.contributor-covenant.org/translations][translations].
+
+[homepage]: https://www.contributor-covenant.org
+[v2.1]: https://www.contributor-covenant.org/version/2/1/code_of_conduct.html
+[Mozilla CoC]: https://github.com/mozilla/diversity
+[FAQ]: https://www.contributor-covenant.org/faq
+[translations]: https://www.contributor-covenant.org/translations

CONTRIBUTING.md

@@ -1,58 +1,156 @@
 # Contributing to KoalaSync
 
-Thank you for your interest in contributing to KoalaSync! We welcome all contributions, from bug reports to new features.
+Thanks for your interest in improving KoalaSync. All contributions are welcome — from bug reports and translations to core protocol changes.
 
-## Development Workflow
+Please note that by participating in this project, you agree to abide by our [Code of Conduct](CODE_OF_CONDUCT.md).
 
-### 1. Prerequisites
-- Node.js (v18+)
-- Docker (for local server testing)
+---
 
-### 2. Setup
-1. Clone the repository.
-2. Run `npm install` in the root directory to install build dependencies.
-3. Run the build script to synchronize protocol constants and generate browser bundles:
-   ```bash
-   node scripts/build-extension.js
-   ```
+## Ways to Contribute
 
-### 3. Testing Locally
-1. Load `dist/chrome/` as an "Unpacked Extension" in Chrome (`chrome://extensions/` → Developer Mode → Load Unpacked).
-2. For Firefox, load `dist/firefox/` via `about:debugging` → "Load Temporary Add-on".
-3. Start the relay server: `docker-compose up --build`.
-4. Use **two different browser profiles** (or Chrome + Firefox) to test multi-peer synchronization.
-5. Use the extension's **Dev tab** to verify real-time video element metadata (`readyState`, `currentTime`, `paused`).
+| Area | Description |
+|------|-------------|
+| **Bug Reports** | Found a bug? Open an issue with repro steps (see template below). |
+| **Code** | Fix bugs, add features, or improve the extension / server / website. |
+| **Translations** | Help localize the extension and website into more languages. See [TRANSLATION.md](website/TRANSLATION.md). |
+| **Documentation** | Improve docs, fix typos, or add missing examples. |
+| **Security** | Found a vulnerability? See [SECURITY.md](SECURITY.md) — do NOT open a public issue. |
 
-### 4. Protocol Synchronization
-KoalaSync uses a "Single Source of Truth" for protocol constants in `shared/constants.js`. 
-- **CRITICAL**: If you modify the constants, you MUST run the build script:
-  ```bash
-  node scripts/build-extension.js
-  ```
-  This will automatically synchronize the changes to the extension and generate the browser-specific bundles in the `dist/` folder.
+---
 
-### 5. Code Standards
-- **Vanilla JS**: The extension must remain dependency-free. Do not add npm packages to the `extension/` directory.
-- **Privacy**: Do not add external requests (CDNs, fonts, analytics, etc.).
-- **Comments**: Maintain the existing documentation style, especially for complex sync logic.
-- **Room IDs**: Room IDs are restricted to `[a-zA-Z0-9-]` (alphanumeric + hyphens only). Ensure any UI that generates room IDs follows this constraint.
+## Development Setup
+
+### Prerequisites
+
+- **Node.js** v18+
+- **Docker** (for local relay server testing)
+
+### Quick Start
+
+```bash
+git clone https://github.com/Shik3i/KoalaSync.git
+cd KoalaSync
+npm install
+node scripts/build-extension.js
+```
+
+---
+
+## Project Structure
+
+| Directory | Purpose |
+|-----------|---------|
+| `extension/` | Browser extension (Manifest V3, Chrome & Firefox) |
+| `server/` | Node.js + Socket.IO relay server (Dockerized) |
+| `website/` | Landing page, invitation bridge, and marketing site |
+| `shared/` | Protocol constants — single source of truth |
+| `scripts/` | Build and sync utilities |
+| `docs/` | Architecture, sync protocol, and deep-dive guides |
+
+---
+
+## Testing Locally
+
+### Extension
+
+1. Load `dist/chrome/` as an unpacked extension in Chrome (`chrome://extensions/` → Developer Mode → **Load unpacked**).
+2. For Firefox: load `dist/firefox/` via `about:debugging` → **Load Temporary Add-on**.
+3. Start the relay server: `docker compose up --build`.
+4. Use **two different browser profiles** (or Chrome + Firefox) to test multi-peer sync.
+5. Use the extension's **Dev tab** to inspect real-time video element state (`readyState`, `currentTime`, `paused`).
+
+### Website
+
+```bash
+node website/build.js           # Compile static site → www/
+python3 -m http.server 8080 -d website/www  # Serve locally
+```
+
+Then open `http://localhost:8080`. For multi-language testing: `http://localhost:8080/de/`.
+
+---
+
+## Protocol Constants
+
+KoalaSync uses a **single source of truth** for all protocol constants in `shared/constants.js`.
 
-### 6. Version Numbers
 > [!IMPORTANT]
-> **Do NOT manually bump version numbers.** The CI pipeline automatically injects the version from the git tag into `manifest.base.json`, `shared/constants.js`, and `package.json` during release builds. Manually changing version numbers in a PR will cause conflicts.
+> After modifying `shared/constants.js`, you **must** run the build script to sync changes to the extension:
+> ```bash
+> node scripts/build-extension.js
+> ```
+> This automatically injects constants into `content.js` and regenerates browser bundles in `dist/`.
+
+---
+
+## Code Standards
+
+- **Vanilla JS**: The extension must remain dependency-free. No npm packages in `extension/`.
+- **Privacy-first**: Zero external requests — no CDNs, fonts, analytics, or trackers. All assets self-hosted.
+- **System font stack**: `-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, ...` — never `@import` external fonts.
+- **Room IDs**: Restricted to `[a-zA-Z0-9-]` (alphanumeric + hyphens only). Enforced server-side.
+- **Comments**: Document complex sync logic. The codebase uses inline comments for protocol reasoning.
+
+---
+
+## Version Numbers
+
+> [!CAUTION]
+> **Never manually bump version numbers.** The CI pipeline injects the version from the git tag into `manifest.base.json`, `shared/constants.js`, and `package.json` during release builds. Manual bumps cause conflicts.
+
+---
 
 ## Pull Request Process
-1. Create a new branch for your feature or bugfix.
-2. Ensure your code is tested locally (Chrome and Firefox).
-3. Update relevant documentation (e.g., `docs/ARCHITECTURE.md` if you change the protocol).
-4. Submit your PR with a clear description of the changes.
 
-## Bug Reports
-When reporting a bug, please include:
-- **Browser**: Chrome / Firefox / Edge + version number.
-- **Extension Version**: Visible in the popup's Dev tab.
-- **Dev Tab Output**: Copy the connection status, logs, and video debug info from the Dev tab.
-- **Steps to Reproduce**: A clear sequence of actions that triggers the issue.
+1. **Branch** from `main` for your feature or fix.
+2. **Test locally** on both Chrome and Firefox.
+3. **Website changes**: Run `node website/build.js` and verify the compiled output in `www/`.
+4. **Lint**: Ensure `npm run lint` passes with zero errors and zero warnings.
+5. **Syntax**: Run `node -c` on every modified `.js` file.
+6. **Protocol changes**: Update relevant documentation in `docs/`.
+7. **Submit your PR** with a clear description and linked issue (if applicable).
+
+---
+
+## Bug Report Template
+
+When filing a bug, the easiest way is to use the **Copy Logs** button in the extension's **Status** tab. It copies a fully formatted Markdown report to your clipboard containing:
+
+- System info (version, protocol, peer ID, browser)
+- Connection status (server, room, peers, reconnect state)
+- Video debug info (playback state, readyState, network state, dimensions, error codes, shadow DOM detection, platform)
+- Action history (last 20 events)
+- Log entries (last 50)
+
+Simply paste the clipboard contents into your GitHub issue and add:
+
+| Field | Example |
+|-------|---------|
+| **Steps to Reproduce** | 1. Create room → 2. Join from second browser → 3. Play video |
+| **Expected Behavior** | Both peers play simultaneously |
+| **Actual Behavior** | Peer B remains paused |
+
+If you cannot access the Status tab, include as much of the following manually:
+
+| Field | Example |
+|-------|---------|
+| **Browser** | Chrome 125, Firefox 128 |
+| **Extension Version** | v1.9.3 (visible at bottom of Settings tab) |
+| **Website/Platform** | Netflix, YouTube, Twitch, Jellyfin, etc.
+
+---
+
+## Translation Contributions
+
+KoalaSync supports 6 languages: English, German, French, Spanish, Portuguese (Brazilian), and Russian.
+
+To add or improve translations:
+1. Edit the locale files in `website/locales/` (for the website).
+2. For extension translations, see [TRANSLATION.md](website/TRANSLATION.md).
+3. Run `node website/build.js` to regenerate the static site.
+
+---
 
 ## Security
-If you find a security vulnerability, please do not open a public issue. Instead, refer to our [SECURITY.md](SECURITY.md) for responsible disclosure instructions.
+
+If you discover a security vulnerability, **do not open a public issue**. Report it privately as described in [SECURITY.md](SECURITY.md).

Caddyfile.example

@@ -1,46 +0,0 @@
-# KoalaSync - Production Caddy Configuration Example
-# Replace domains and paths with your actual setup.
-
-# 1. Marketing Website & Invitation Bridge
-sync.koalastuff.net {
-    root * /var/www/koalasync/website
-    file_server
-    encode zstd gzip
-
-    # Static Caching for high-performance PageSpeed (1 year with validation)
-    @static {
-        file
-        path *.ico *.css *.js *.png *.svg *.webp
-    }
-    header @static Cache-Control "public, max-age=31536000, must-revalidate"
-
-    # Security Headers & Content Security Policy (CSP)
-    header {
-        # Strict Content Security Policy (restricts scripts and connections to self, forbids frames)
-        Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; connect-src 'self'; img-src 'self' data:; object-src 'none'; frame-ancestors 'none';"
-        # Prevent FLoC tracking
-        Permissions-Policy interest-cohort=()
-        # Security best practices
-        Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
-        X-Content-Type-Options nosniff
-        X-Frame-Options DENY
-        Referrer-Policy no-referrer-when-downgrade
-    }
-}
-
-# 2. Relay Server (Socket.IO / WebSocket)
-syncserver.koalastuff.net {
-    reverse_proxy localhost:3000 {
-        # Ensure WebSocket support is explicitly handled if needed
-        # (Caddy usually handles this automatically)
-        header_up Host {host}
-        header_up X-Real-IP {remote_host}
-    }
-
-    # Security Headers for the relay
-    header {
-        X-Content-Type-Options nosniff
-        X-Frame-Options DENY
-        Referrer-Policy no-referrer
-    }
-}

README.md

@@ -1,4 +1,8 @@
-<h1 align="center"><img src="extension/icons/icon128.png" width="32" valign="middle"> KoalaSync</h1>
+<p align="center">
+  <img src="website/assets/PlatformJuggler_New.webp" width="280" alt="KoalaSync Mascot">
+</p>
+
+<h1 align="center">KoalaSync</h1>
 
 <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>
@@ -8,11 +12,13 @@
   <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>
 </p>
 
-<p align="center"><i>KoalaSync is a lightweight Browser Extension and Relay Server for synchronized video playback across any website—YouTube, Twitch, Netflix, and custom HTML5 players. Built with a focus on <b>Data Sovereignty</b> and <b>Performance</b>.</i></p>
+<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 v2.2.2 Release!</b> — See what's changed</a></p>
 
 ### 🌟 Why KoalaSync?
 
-*   **🛡️ Security-First**: Volatile RAM-based relay with built-in brute-force protection and zero-persistence architecture.
+*   **🛡️ Security-First**: Volatile RAM-based relay with built-in brute-force protection and zero-persistence architecture. We keep no logs of your sessions or synchronizations. *We don't track you. We only track our server* (relying on the [aggregated, anonymous, non-personal metrics](https://syncserver.koalastuff.net/health) provided under `/health`).
 *   **📡 Direct Logic**: Manual Socket.IO wire implementation for reliable synchronization.
 *   **🛠️ Clean Build**: Dependency-free extension runtime with no library overhead.
 *   **🌐 Universal**: Works on any website with a `<video>` tag.
@@ -27,10 +33,42 @@
 - **Dual Heartbeat Architecture**: Robust session tracking that prevents ghost rooms and stale connections.
 - **Efficient Relay**: Minimal overhead WebSocket message forwarding.
 - **Seamless Invitations**: Smart links that automatically configure server and room credentials for your friends.
+- **Smart Audio Compressor**: Tired of constantly riding the volume? Automatically balance out whispering dialogue and deafening explosions with simple presets, or fully customize the audio to your liking.
 
 ---
 
-### 📂 Repository Structure
+### 🚀 Quick Start
+
+#### For Users (Installation & Usage)
+The easiest and safest way to install KoalaSync is directly through the official browser stores:
+
+<p>
+  <a href="https://chromewebstore.google.com/detail/koalasync/obbnmkmlaaddodakcbdljknjpagklifc"><img src="https://img.shields.io/badge/Chrome-Download-blue?logo=googlechrome&logoColor=white&style=for-the-badge" alt="Chrome Extension"></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&style=for-the-badge" alt="Firefox Add-on"></a>
+</p>
+
+*(For manual offline installation: Download the latest `.zip` from the [Releases](https://github.com/Shik3i/KoalaSync/releases) page and load it as an "Unpacked Extension" in Developer Mode).*
+
+**How to use:**
+1. **Create a Room:** Click the Koala icon in your browser and hit `+ Create New Room`.
+2. **Invite Friends:** Share the auto-copied invite link. Once they click it, they automatically join.
+3. **Pick a Video:** Navigate to the Sync Tab, select the tab playing your video, and grab some popcorn! 🍿
+
+---
+
+### 🌐 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`).
+- **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](website/TRANSLATION.md) guide for step-by-step instructions on how to audit, refine, or add new languages.
+
+
+---
+
+### 🛠️ For Developers & Self-Hosters
+
+#### 📂 Repository Structure
 
 - `extension/`: Browser Extension (Chrome & Firefox).
 - `server/`: Node.js + Socket.IO Relay Server (Containerized).
@@ -39,16 +77,7 @@
 - `scripts/`: Automated build and synchronization utilities.
 - `docs/`: Technical deep-dives ([Architecture](docs/ARCHITECTURE.md), [Sync Guide](docs/SYNC_GUIDE.md)).
 
----
-
-### 🚀 Quick Start
-
-#### For Users (Installation)
-The easiest way to install KoalaSync is to download the pre-compiled version from the [Releases](https://github.com/Shik3i/KoalaSync/releases) page.
-1. Download the latest `koalasync-chrome.zip` or `koalasync-firefox.zip`.
-2. Extract the file and load it as an "Unpacked Extension" in your browser's Developer Mode.
-
-#### For Developers (Building)
+#### Building from Source
 To build the extension from source and synchronize protocol constants:
 ```bash
 npm install
@@ -63,28 +92,53 @@ Deploy your own private relay server using our official image:
 docker pull ghcr.io/shik3i/koalasync:latest
 
 # Or use our example compose file
-cp docker-compose.example.yml docker-compose.yml
+cp examples/docker-compose.caddy.example.yml docker-compose.yml
 docker-compose up -d
 ```
-The server will be available at `ws://localhost:3000`. See [docker-compose.example.yml](docker-compose.example.yml) for advanced configuration.
+The server will be available at `ws://localhost:3000`. See [Docker network compose](examples/docker-compose.caddy.example.yml) or [Static IP compose](examples/docker-compose.ip.example.yml) for ready-to-use Docker Compose files.
 
 To connect your extension to a self-hosted server, open the popup → **Room** tab → select **Custom Server** → enter your server's WebSocket URL (e.g., `ws://localhost:3000`).
 
-> **⚠️ Note**: `ws://` only works for `localhost`. If you deploy to a real domain, you **must** use `wss://` (e.g., `wss://sync.yourdomain.com`). This requires a TLS-terminating reverse proxy (e.g., Caddy, Nginx, or Traefik) in front of the relay server. See [Caddyfile.example](Caddyfile.example) for a production-ready template.
+> **⚠️ Note**: `ws://` only works for `localhost`. If you deploy to a real domain, you **must** use `wss://` (e.g., `wss://sync.yourdomain.com`). This requires a TLS-terminating reverse proxy (e.g., Caddy, Nginx, or Traefik) in front of the relay server. See [Caddyfile.example](examples/Caddyfile.example) for a production-ready template.
+
+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 (v2.2.2+)
+
+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.
+
+**Verify a Docker image:**
+```bash
+gh attestation verify oci://ghcr.io/shik3i/koalasync:latest \
+  -R Shik3i/KoalaSync
+```
+
+**Verify an extension binary:**
+```bash
+gh attestation verify dist/koalasync-chrome.zip \
+  -R Shik3i/KoalaSync
+```
 
 ---
 
 ### 📖 Documentation & Links
 
-- **[PRIVACY.md](PRIVACY.md)**: Data Handling and Privacy Policy.
+- **[CHANGELOG.md](docs/CHANGELOG.md)**: Full version history for the extension and relay server.
+- **[TESTED_SERVICES.md](docs/TESTED_SERVICES.md)**: Detailed compatibility matrix of tested streaming platforms and known limitations.
+- **[TRANSLATION.md](website/TRANSLATION.md)**: Translation and localization guide for contributors.
+- **[PRIVACY.md](docs/PRIVACY.md)**: Data Handling and Privacy Policy.
 - **[CONTRIBUTING.md](CONTRIBUTING.md)**: How to help make KoalaSync better.
+- **[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.
 - **[SECURITY.md](SECURITY.md)**: Disclosure policy and security practices.
-- **[Caddyfile.example](Caddyfile.example)**: Production Caddy configuration for website and relay.
+- **[Caddyfile.example](examples/Caddyfile.example)**: Production Caddy configuration for website and relay.
 
 ---
 
 <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://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>
 </div>

SECURITY.md

@@ -1,23 +1,96 @@
 # Security Policy
 
+KoalaSync is built on a **zero-persistence, privacy-first** architecture. We take security seriously and appreciate responsible disclosure of vulnerabilities.
+
+---
+
 ## Supported Versions
 
-We take the security of our users and their data very seriously. We actively support and patch the latest stable releases of KoalaSync. 
+Only the latest stable release receives security patches.
 
-| Version        | Supported          |
-| -------------- | ------------------ |
-| Latest Release | :white_check_mark: |
-| Older Versions | :x:                |
+| Version | Supported |
+|---------|-----------|
+| Latest release | :white_check_mark: Active |
+| Older versions | :x: Unsupported |
+
+Users on older versions are encouraged to update. The server enforces a minimum client version via `MIN_VERSION`.
+
+---
+
+## Scope
+
+The following components are within scope for security reports:
+
+| Component | Examples |
+|-----------|----------|
+| **Relay Server** (`server/`) | Authentication bypass, rate-limit evasion, room hijacking, DoS vectors |
+| **Browser Extension** (`extension/`) | XSS via content scripts, privilege escalation, data exfiltration, tab snooping |
+| **WebSocket Protocol** | Message injection, replay attacks, man-in-the-middle (WSS bypass) |
+| **Website** (`website/`) | XSS, CSP bypass, invitation-hash leaks |
+
+### Out of Scope
+
+- Theoretical attacks requiring physical device access
+- Social engineering or phishing
+- Denial of service via resource exhaustion on self-hosted instances
+- Vulnerabilities in third-party browser extensions or websites
+
+---
 
 ## Reporting a Vulnerability
 
-If you discover a security vulnerability within KoalaSync (e.g., related to the Node.js relay server, WebSocket wire protocol, or the Chrome/Firefox browser extension), please **DO NOT** report it by creating a public GitHub issue. 
+> [!CAUTION]
+> **Do NOT open a public GitHub issue for security vulnerabilities.** Public disclosure before a patch is available puts users at risk.
 
-Publicly disclosing a vulnerability before a patch is available puts our users at risk. Instead, please send an email privately to the project administrator at:
-**koalasync_admin@koalamail.rocks**
+Instead, email the project maintainer privately:
 
-### What to expect
-1. **Acknowledgment**: You should receive an acknowledgment of your report within 48 hours.
-2. **Investigation**: We will investigate the issue, confirm its severity, and work on a patch.
-3. **Resolution**: We will notify you when the patch is deployed to the Chrome Web Store, Mozilla Add-on Store, and our GitHub Docker releases.
-4. **Disclosure**: Once the fix is confirmed and users have had time to update, we will publicly acknowledge your contribution in our release notes (unless you prefer to remain anonymous).
+**`koalasync_admin@koalamail.rocks`**
+
+Encrypt sensitive findings with our PGP key (available on request).
+
+### What to Include
+
+- **Affected component**: Server / Extension / Website / Protocol
+- **Steps to reproduce**: Clear, minimal steps to trigger the vulnerability
+- **Impact**: What an attacker could achieve (data access, privilege escalation, etc.)
+- **Environment**: Browser version, extension version, server configuration
+- **Suggested fix** (optional): If you have ideas for a patch
+
+### What to Expect
+
+| Timeline | Action |
+|----------|--------|
+| **Within 48 hours** | Acknowledgment of your report |
+| **Within 7 days** | Initial assessment and severity confirmation |
+| **As needed** | Collaborative discussion for clarification |
+| **After patch** | Notification that the fix is deployed |
+| **After rollout** | Public acknowledgment in release notes (or anonymity if preferred) |
+
+---
+
+## Architecture & Threat Model
+
+KoalaSync's security is grounded in its architecture:
+
+- **RAM-only relay**: No database, no persistent logs. All session data evaporates on disconnect.
+- **Keyed SHA-256 room password hashes**: Plaintext passwords are never stored. Room passwords are held only as in-memory HMAC-SHA256 hashes for the short room lifetime, with brute-force protection: 5 attempts → 15-minute IP lockout.
+- **Rate limiting**: Connection rate (IP-based, 60s window), health endpoint rate (10 requests/minute/IP), wrong admin-metrics bearer attempts (5 requests/minute/IP), and event rate (per-socket, 10s window). Health-style JSON responses are cached server-side for 60 seconds and refreshed lazily on request.
+- **Reverse proxy boundary**: The relay trusts one proxy hop for client IP detection. In production, keep the Node server reachable only through Caddy or another trusted reverse proxy.
+- **URL-hash credential isolation**: Invitation credentials live in the URL fragment (`#join:...`) — never sent to the web server.
+- **Strict CSP**: `default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'none'`.
+- **No third-party requests**: Zero CDNs, fonts, analytics, or external scripts.
+
+If you find a way to bypass any of these protections, we want to know about it.
+
+---
+
+## Responsible Disclosure
+
+We follow the principle of **coordinated vulnerability disclosure**:
+
+1. You report privately.
+2. We investigate and develop a patch.
+3. We deploy to the Chrome Web Store, Firefox Add-ons, and Docker registry.
+4. We credit you publicly (unless you prefer to remain anonymous).
+
+We do not pursue legal action against researchers who act in good faith and follow this disclosure process.

assets/StoreAssets/StoreDescription.md

@@ -0,0 +1,57 @@
+KoalaSync: Private Watch Parties for Emby, Jellyfin, Plex, Netflix & YouTube
+
+Tired of counting down "3, 2, 1, Play" over voice chat? KoalaSync keeps you and your friends perfectly in sync. Whether you are streaming from your own self-hosted media server like Emby, Jellyfin or Plex, or watching on a major platform like Netflix, Prime Video or YouTube — KoalaSync is designed for smooth, browser-based watch parties.
+
+
+✨ CORE FEATURES
+No account required. No tracking. Just create a room, invite your friends, and start watching together.
+
+• Real-Time Video Sync: Play, pause, seek, and watch together with fast synchronized playback across everyone in your room.
+• No Account Needed: Create a room and share the invite link. No emails, no passwords, no sign-ups. Pick a nickname or let KoalaSync generate one for you.
+• Works Almost Everywhere: If the website uses a standard HTML5 video player, KoalaSync can usually sync it. Perfect for streaming sites, self-hosted media servers, and other websites.
+• Smart Binge-Watching: When a new episode loads, KoalaSync automatically pauses the lobby until everyone is ready. No spoilers, no one left behind.
+• Smart Audio Compressor: Tired of quiet dialogue and suddenly loud action scenes? Balance whispering, explosions, and music with a single click while you watch.
+• One-Click Invites: Send a smart invite link to your friends. When they open it, KoalaSync automatically configures the room so they can join instantly.
+• 13 Languages: Enjoy a native experience with a fully translated user interface.
+
+
+
+🛡️ PRIVACY & SECURITY
+KoalaSync is built for private watch parties without unnecessary data collection.
+
+• No Tracking: Zero analytics, zero telemetry, and absolutely no behavior profiling.
+• Anonymous by Design: No accounts needed. Rooms can be joined with a simple nickname.
+• Ready Out of the Box: Install KoalaSync and start watching immediately using the official public relay server. No technical setup required.
+• RAM-Only Public Server: The official relay server operates entirely in volatile RAM. No databases, no stored watch history, no persistent room data. Room data exists only temporarily and disappears when the room closes.
+• Self-Hostable: Want full control? You can run your own private KoalaSync relay server via Docker in seconds. Self-hosting is optional and never required.
+
+
+
+🚀 HOW IT WORKS
+1. Install KoalaSync.
+2. Click "Create Room" to start a private watch party.
+3. Share the invite link with your friends.
+4. Open your favorite streaming site or media server.
+5. Select the active video tab.
+6. Press play — everyone stays perfectly in sync.
+
+
+
+⚙️ UNDER THE HOOD
+KoalaSync is lightweight, transparent, and built with privacy in mind.
+
+• Real-Time Relay: Playback state is synchronized through a custom WebSocket-based relay server for fast room updates.
+• No Media Streaming: KoalaSync does not stream, proxy, upload, download, or redistribute any video content. Everyone watches from their own browser on the original website.
+• Temporary Room State Only: The relay server only coordinates room state such as play, pause, seek position, active target, nickname, and readiness status.
+• Docker Self-Hosting: The relay server can be self-hosted with Docker if you prefer to run your own private instance.
+• Open Architecture: The project is designed to be inspectable, forkable, and easy to review.
+
+
+
+💻 OPEN SOURCE
+KoalaSync was built by a solo developer who needed a fast, secure way to watch movies with friends. The code is fully transparent under the MIT license: audit it, fork it, improve it, or self-host your own relay server.
+
+Found a bug or have a feature idea? Open an issue on GitHub. Contributions and code reviews are always welcome.
+
+• Website: https://sync.koalastuff.net
+• GitHub: https://github.com/Shik3i/KoalaSync

docker-compose.example.yml

@@ -1,25 +0,0 @@
-services:
-  koala-sync:
-    image: ghcr.io/shik3i/koalasync:latest
-    container_name: KoalaSync
-    restart: always
-    ports:
-      - "3000:3000"
-    environment:
-      - TZ=Europe/Berlin
-      - PORT=3000
-      - MIN_VERSION=1.0.0
-      - MAX_ROOMS=100
-      - MAX_PEERS_PER_ROOM=50
-    # KoalaSync uses in-memory storage for the relay, 
-    # so no persistent database volume is required.
-    pids_limit: 2048
-    # Example for custom network (e.g., Unraid/Macvlan)
-    # networks:
-    #   custom_network:
-    #     ipv4_address: 192.168.1.XXX
-
-# networks:
-#   custom_network:
-#     external: true
-#     name: br0

docs/AI_INIT.md

@@ -5,6 +5,9 @@ Welcome to the KoalaSync project. This file is the primary entry point for any d
 > [!IMPORTANT]
 > **Privacy & Data Sovereignty**: KoalaSync follows a strict **Zero-External-Requests Policy**: The extension and website must not make requests to any third-party domains (Google Fonts, CDNs, etc.). All assets (fonts, icons, scripts) must be self-hosted or use system defaults.
 > - **Font Stack**: Use a modern system font stack (e.g., -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif) to maintain a premium look without external dependencies. Prohibit the use of `@import` or `<link>` for external font services.
+> 
+> [!IMPORTANT]
+> **Caveman Communication Protocol**: To conserve context window and tokens, AI agents MUST communicate with the user in **caveman language** (broken, short German/English hybrid caveman style, e.g., "Ich Antigravity. Ich machen Git pull. Code fertig.") at all times. This rule is highly strict and must NOT be broken under any circumstances unless the user explicitly requests to drop it.
 
 ---
 
@@ -18,6 +21,8 @@ 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.
 - `shared/`: **Single Source of Truth** for protocol constants and event names.
 - `scripts/`: Development utilities (e.g., `build-extension.js`).
 - `docker-compose.yml`: Root-level orchestration for the relay server.
@@ -29,14 +34,14 @@ KoalaSync is a specialized tool for **synchronized video playback** across multi
 
 ## 3. Mandatory Reading
 Before touching any code, you MUST read the following documents in order:
-1. [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md) – Detailed communication flows, Dual Heartbeat, and two-phase sync protocol.
-2. [extension/README.md](extension/README.md) – Extension components, tab structure, and loading process.
-3. [docs/SYNC_GUIDE.md](docs/SYNC_GUIDE.md) – Protocol constants and synchronization requirements.
+1. [ARCHITECTURE.md](ARCHITECTURE.md) – Detailed communication flows, Dual Heartbeat, and two-phase sync protocol.
+2. [extension/README.md](../extension/README.md) – Extension components, tab structure, and loading process.
+3. [SYNC_GUIDE.md](SYNC_GUIDE.md) – Protocol constants and synchronization requirements.
 
 ## 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.js`) 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
@@ -85,6 +90,7 @@ The following features are critical and must not be removed or fundamentally alt
 - **Server Transport**: Restricted to `websocket` only. Polling is disabled.
 - **Docker Context**: The Docker build must run from the **Repo Root**.
 - **Manifest Settings**: `run_at` must remain `document_idle`, and `all_frames` must remain `false`.
+- **Strict Backward & Forward Compatibility (Store Delay Rule)**: Browser extensions are distributed through stores (e.g., Chrome Web Store, Firefox Add-ons) which can take up to 2 weeks to approve updates. Therefore, the server MUST NOT reject older extension clients unless a critical protocol version bump is explicitly authorized, and new extension versions MUST remain fully operational when connected to older servers (e.g., by silently falling back if a new feature is not supported). This is a core architectural requirement.
 
 ## 9. Security & Deployment
 - **Tokens**: Security tokens are intentionally managed via `shared/constants.js` and server `.env`.
@@ -94,13 +100,23 @@ The following features are critical and must not be removed or fundamentally alt
 
 ## 10. Common Workflows
 
+## CRITICAL: Git & Release Rules
+
+- **NEVER** push, commit, tag, or release without explicit user instruction.
+- **NEVER** retag or force-push without explicit instruction.
+- **NEVER** create tags for documentation-only or README changes.
+- **NEVER** run `git push`, `git tag`, `git commit` unless the user says "push", "commit", or "tag".
+- Only the user decides when to commit, push, tag, or release.
+- Ask before any git write operation.
+
 ### ⚠️ Pre-Session Git Sync (MANDATORY)
 Before starting any task, committing, or pushing, you **MUST** run `git pull --rebase` to ensure your local branch is up-to-date with `origin/main`. CI pipelines and other agents may push commits concurrently. Skipping this step will cause merge conflicts and rejected pushes.
 
 ### Releasing a New Version (CRITICAL WORKFLOW FOR AI AGENTS)
 > [!CAUTION]
 > **AI AGENTS MUST FOLLOW THIS EXACT SEQUENCE WHEN RELEASING A NEW VERSION OR TAGGING.**
-> The CI pipeline automatically injects the version from the git tag into `manifest.base.json`, `shared/constants.js`, and `package.json`. You do NOT need to manually bump version numbers.
+> 
+> **🚫 NO MANUAL VERSION BUMPING**: You MUST **NEVER** manually modify the version strings in `package.json`, `extension/manifest.base.json`, or `website/version.json`. The GitHub Actions CI pipeline automatically extracts the version from the git tag (e.g. `v2.0.5` -> `2.0.5`), injects it into all target files, and commits the updates back to `main` with `[skip ci]`. Manual bumps will cause merge conflicts and build failures.
 > - **Website Versioning**: **NEVER** manually modify the version fallback strings in `website/index.html`. The website dynamically fetches the latest version and release date from `website/version.json` at runtime using `website/app.js`. Manual bumps in the HTML file are completely redundant and should be avoided.
 1. **MANDATORY SYNTAX & LINT CHECKS**: Before staging, committing, or pushing any changes, you **MUST** run both checks on every modified JavaScript file:
    - **Syntax Validation**: Run `node -c` on every single modified JavaScript file (e.g., `node -c extension/background.js` and `node -c extension/content.js`). **NEVER** commit or push code that fails this check.
@@ -108,6 +124,7 @@ Before starting any task, committing, or pushing, you **MUST** run `git pull --r
 2. Commit all verified code changes and push to `main`.
 3. Create and push a new tag. **MANDATORY**: Tags MUST start with a `v` (e.g., `v1.4.0`). The GitHub Actions release workflow is strictly configured to ignore any tags without the `v` prefix.
    - **🚫 TAG IMMUTABILITY**: Once a tag is pushed to `origin`, it is **PERMANENT**. You MUST **NEVER** reuse, move, or force-push an existing tag — not even to "fix" a mistake. If a release is missing a fix, increment the version and create a **new** tag (e.g., `v1.7.0` → `v1.7.1`). Tags are immutable identifiers; moving them breaks CI pipelines, corrupts the release history, and causes unreproducible builds.
+   - **🚫 WHEN NOT TO TAG**: Do NOT create a release tag for changes that do NOT affect the shipped extension or server artifacts. Website text changes, documentation updates (`.md` files), and landing page content do NOT require a version tag. Tags trigger the full CI pipeline (Docker build, extension packaging, GitHub Release) — running this for a typo fix wastes CI resources and creates meaningless releases. Only tag when extension code (`extension/`), server code (`server/`), or shared protocol constants (`shared/`) have changed.
 4. The CI will extract the version from the tag (e.g., `v1.4.0` → `1.4.0`), inject it into all source files, build the extension artifacts, publish the Docker image, and create a GitHub Release.
 5. Verify the release builds on GitHub Actions.
 
@@ -123,6 +140,13 @@ Before starting any task, committing, or pushing, you **MUST** run `git pull --r
 2. Run the build script (`node scripts/build-extension.js`).
 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.
+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`.
 2. Load `dist/chrome/` as an "Unpacked Extension" in Chrome (or `dist/firefox/` in Firefox).

docs/ARCHITECTURE.md

@@ -58,7 +58,7 @@ KoalaSync uses a megaphone routing approach to minimize server logic:
 ## 7. Security & Stability
 - **Service Worker Lifecycle**: Uses `chrome.alarms` (30s interval) to prevent the Manifest V3 service worker from suspending while in an active room. On wake, runtime state is restored from `chrome.storage.session` via `ensureState()`.
 - **Reconnect Visualization**: Badge shows "..." (orange) during reconnect. Popup displays "Reconnecting..." with attempt counter.
-- **Rate Limiting**: Server-side per-socket and per-IP rate limits to prevent sync-spamming or DoS. Real client IP extracted via `x-forwarded-for` header behind proxies/CDNs.
+- **Rate Limiting**: Server-side per-socket and per-IP rate limits to prevent sync-spamming or simple DoS. Public health endpoints are limited to 10 requests/minute/IP and cached server-side for 60 seconds, wrong admin-metrics bearer attempts to 5 requests/minute/IP, and room discovery to one request every 10 seconds per socket. Real client IP is taken from the trusted reverse proxy hop, so the Node port must stay private behind Caddy or another trusted proxy.
 - **Room Creation Lock**: Per-room mutex prevents race conditions when multiple peers join a new room simultaneously.
 - **CORS**: Allows `chrome-extension://` origins for WebSocket fallback compatibility.
 - **Message Buffer**: `maxHttpBufferSize` set to 4KB to accommodate large `JOIN_ROOM` payloads.

docs/CHANGELOG.md

@@ -0,0 +1,212 @@
+# KoalaSync Changelog
+
+All notable changes to the KoalaSync browser extension and relay server.
+
+---
+
+## [v2.2.3] — 2026-06-10
+
+### Added
+- **Artifact Attestations (Supply Chain Security)**: All release artifacts (Docker images, extension ZIPs) are now published with signed [SLSA provenance attestations](https://docs.github.com/en/actions/how-tos/secure-your-work/use-artifact-attestations) via `actions/attest@v4`. Anyone can verify that an artifact was built from this repository using `gh attestation verify`.
+- **Admin health: `rateLimits.denied` counters**: New rolling counters track actual rate-limit denials (429 responses), separate from `rateLimits.trackedClients` which reports unique IPs in the tracking window.
+- **Docker HEALTHCHECK**: Container health is now checked every 30s via `GET /health`.
+- **`npm start` script**: Server can now be started with `npm start`.
+
+### Fixed
+- **Server: `activeLobby` no longer silently overwritten**: If a second peer sends `EPISODE_LOBBY` while a lobby is already active, the request is now ignored instead of destroying the first peer's lobby.
+- **CORS log sanitization**: Rejected origin headers are sanitized (`\r\n` stripped) to prevent log injection.
+- **Extension: pagehide resource leak**: `keepAlivePort`, `lobbyPollTimer`, heartbeats, and `MutationObserver` are now properly cleaned up when a tab is hidden or enters bfcache.
+- **Extension: unhandled storage rejections**: `chrome.storage.session.set()` calls in the disconnect handler now have `.catch(() => {})`.
+- **`'Pixel'` duplicate in name generator**: Second occurrence replaced with `'Nitro'` for better name diversity.
+- **`'opposum'` typo**: Corrected to `'opossum'` in the emoji map and added `'Opossum'` to `USERNAME_NOUNS`.
+- **Test reliability**: `test-server-routes.mjs` now sets `ADMIN_METRICS_TOKEN` before importing the server module, fixing standalone test execution.
+- **`MAX_PEERS_PER_ROOM` konsistent**: `.env` auf 25 gesetzt (wie `.env.example`).
+- **pt-BR.json duplicate removed**: Duplicate `FOOTER_DISCLAIMER` key removed from website locale.
+
+### Changed
+- **Admin health: `rateLimitEntries` renamed to `rateLimits.trackedClients`**: The field now accurately describes that it tracks unique clients in the rate-limit window, not denial counts. Update your json_exporter/Grafana config accordingly.
+- **README restructured**: Sections reordered by progressive technical depth. New "Supply Chain Security" subsection under "For Developers & Self-Hosters" with verification commands.
+
+---
+
+## [v2.2.2] — 2026-06-09
+
+### Added
+- **Chrome Web Store i18n Support**: Added `default_locale: "en"` to manifest and created `_locales/*/messages.json` for all 13 supported languages. This unlocks the language selection dropdown in the Chrome Web Store dashboard, allowing translated store listings (title, description) per locale. The extension's own UI translations (`locales/*.json` + `i18n.js`) remain unchanged.
+- **Locale test coverage**: Extended `scripts/test-locales.js` to validate all `_locales/*/messages.json` files (correct format, required keys, no duplicates) and verify `default_locale` is set in the manifest.
+
+### Fixed
+- **Copy Logs button alignment**: Removed stray `margin-top: 8px` inherited from `.secondary` class that pushed the button 8px down in the connection status row.
+
+---
+
+## [v2.2.1] — 2026-06-09
+
+### Added
+- **Server Ping Display**: Measures round-trip latency to the relay server via application-level ping/pong events. The extension sends `PING { t }` every 15 seconds; the server responds with `PONG { t }`. Round-trip time is calculated client-side and displayed in the Status tab, color-coded (<50ms green, 50–150ms yellow, >150ms red). No ping value is shown when disconnected or if the server does not respond within 5 seconds.
+- **Peer Ping Response (Future-Proof)**: The extension can now respond to incoming `PING { t, sender }` events from other peers by sending back `PONG { t, target: sender }`. The relay server forwards `PING` to the target peer and routes `PONG` back to the original sender. Both client and server validate that peers are in the same room before forwarding/routing. Peer-to-peer ping initiation will be activated in a future extension update without requiring a server restart.
+
+---
+
+## [v2.2.0] — 2026-06-08
+
+### Added
+- **Web Audio API Compressor**: Built-in audio dynamic range compression with four presets (Recommended, Dynamic Range, Vocal Enhancement, Smooth) and fully customizable sliders (threshold, ratio, knee, attack, release). Uses dry/wet crossfade (40ms linear ramp) to avoid clicks. Configured via the new Audio Options page accessible from the Settings tab.
+- **Audio Options Page** (`audio-options.html`): Dedicated settings page with master toggle, compressor preset selector, real-time custom sliders, and equalizer placeholder. Dark theme matching the popup design.
+- **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.
+
+### 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".
+- **Korean locale**: Fixed broken character in `HOWTO_STEP_2_TEXT` (`클rip보드` → `클립보드`).
+- **Website COMP_FEAT_6_KOALA**: Normalized from inconsistent "6 Languages" to "13 Languages" across all locale files (en, de, es, fr, pt-BR, ru).
+- **Debug report showing wrong logs**: Fixed `logs.slice(-50)` and `history.slice(-20)` in the "Copy Debug Report" feature. Since `addLog()` and `addToHistory()` use `unshift` (inserting entries at index 0), the arrays are ordered newest-first. `slice(-N)` took the N **oldest** entries instead of the N **newest**. Changed to `slice(0, N).reverse()` to correctly include the most recent logs and display them chronologically.
+
+---
+
+## [v2.1.2] — 2026-06-06
+
+### Fixed
+- **Episode guard regex**: Fixed `isDifferentEpisode()` not detecting episode changes when the MediaSession title uses `Sxx:Exx` format (colon separator, as used by Jellyfin/Emby). The regex character class `[\s\-\.]` was replaced with `[^a-zA-Z0-9]` to match **any** non-alphanumeric separator between season and episode numbers, preventing play/pause/seek commands from a different episode leaking through and incorrectly manipulating a peer's playback.
+- **Per-device storage isolation**: Migrated `username`, `roomId`, `password`, `serverUrl`, and `useCustomServer` from `chrome.storage.sync` (synced across Google account) to `chrome.storage.local` (per-device). This prevents the extension from automatically joining the same room with the same name on multiple devices. Existing user data is migrated silently on first run; all preferences (`filterNoise`, `autoSyncNextEpisode`, etc.) remain synced.
+
+### Changed
+- Added one-time migration fallback in `getSettings()` and popup `init()` to copy existing user settings from `storage.sync` to `storage.local` on first launch after the update.
+
+---
+
+## [v2.1.0] — 2026-06-04
+
+### Added
+- Added full translation support for 7 new languages to both the browser extension popup settings and landing website: Italian (`it`), Polish (`pl`), Turkish (`tr`), Dutch (`nl`), Japanese (`ja`), Korean (`ko`), and European Portuguese (`pt`).
+- Implemented robust, centralized browser system language detection mapping `pt-BR` to Brazilian Portuguese and other `pt` locales (like `pt-PT`) automatically to European Portuguese.
+- Added flag emojis to language selector dropdowns in both the extension popup and landing/utility web pages for quicker visual identification.
+- Added 181 translation keys parity validation suite checks for the new languages.
+
+### Fixed & Hardened (Extension Audit)
+- Guarded all website `localStorage` interactions to prevent initialization/join flow script failures on privacy-hardened or cookie-blocked browser configurations.
+- Added robust validation null-guards to `chrome.runtime.onMessage` listeners across all extension scripts (`bridge.js`, `content.js`, `background.js`, `popup.js`) to reject unexpected runtime messages.
+- Guarded CustomEvent payload destructuring in `bridge.js` to ensure stability when receiving third-party page events.
+- Wrapped `video.currentTime` seeking adjustments during forced sync in content scripts with exception handling to absorb uninitialized video state DOMExceptions.
+- Added payload validation guards on incoming Socket.IO events within the background script's event handlers to secure against malformed server updates.
+- Prevented noisy browser console exceptions from context invalidation in target tabs by catching promise rejections on extension message dispatches.
+
+### Performance
+- Implemented in-memory language dictionary caching in the background script to completely avoid redundant extension package filesystem reads during translations.
+
+
+---
+
+## [v2.0.8] — 2026-06-03
+
+### Fixed
+- Fixed a bug where switching language inside the extension popup overwrote dynamic fields (such as active room ID, connection status, active server details, and video debug info) with default localized placeholder texts.
+- Fixed a version reporting mismatch where the copied logs (debug reports) and connection handshake parameters incorrectly reported the hardcoded `1.9.0` version instead of the actual installed manifest version.
+
+---
+
+## [v2.0.7] — 2026-06-03
+
+### Added
+- Added a `DEBUG_LOGGING` environment variable to the relay server (defaulting to `"0"` / disabled) to prevent console spam from verbose connection (`CONN`), room activity (`ROOM`, `DEDUPE`), and `CORS` events under load. Critical logs like `SERVER`, `SECURITY`, `AUTH`, and `ERROR` remain enabled at all times.
+
+---
+
+## [v2.0.6] — 2026-06-03
+
+### Performance & Security Hardening
+- Optimized failed authentication attempts cache eviction algorithm to $O(1)$ by exploiting Javascript `Map` insertion-order properties. This completely removes the previous array copying and sorting bottleneck, neutralizing a potential main-thread blocking DoS vector under heavy brute-force password traffic.
+
+---
+
+## [v2.0.5] — 2026-06-03
+
+### Security & Hardening
+- Hardened extension room idle auto-leave detection to correctly recognize when the target tab's video heartbeat goes stale (e.g., after tab navigation or media closure).
+- Exported cleaner graceful shutdown and lifecycle methods (`stopServerForTests`) from the relay server to prevent socket leaks and port-binding conflicts during verify checks.
+
+### Added
+- Added a validation step in `test-locales.js` to ensure the supported language list in `extension/i18n.js` is perfectly synchronized with the actual JSON translation files in the locales directory.
+- Added a robust route verification test suite (`scripts/test-server-routes.mjs`) covering rate limit throttling, caching headers, and admin metrics access control.
+
+---
+
+## [v2.0.4] — 2026-06-03
+
+### Security & Hardening
+- Hardened relay health endpoints against simple flood traffic: `GET /` and `GET /health` are now limited to 10 requests per minute per client IP.
+- Added lazy 60-second server-side caching for `GET /`, basic `/health`, and admin `/health` JSON responses to reduce repeated health-check work under noisy polling.
+- Added stricter brute-force throttling for invalid admin metrics bearer attempts.
+- Added startup warning for short `ADMIN_METRICS_TOKEN` values and documented that production Node ports must stay private behind Caddy or another trusted reverse proxy.
+- Lowered the default maximum peers per room to 25.
+
+### Added
+- Optional privacy-preserving admin metrics on `/health` when `ADMIN_METRICS_TOKEN` is configured and a valid bearer token is supplied. Metrics are aggregate-only and exclude room IDs, peer IDs, usernames, IP addresses, media titles, passwords, and other user-level data.
+
+### Changed
+- Removed `bcryptjs`; temporary room passwords continue to use keyed SHA-256/HMAC hashing as documented.
+- Public room discovery is now rate-limited server-side to one refresh every 10 seconds per socket, with the extension refresh button locked for 11 seconds.
+
+### Fixed
+- Improved Shadow DOM video detection so real embedded players are not hidden by smaller light-DOM preview or placeholder videos.
+- Fixed join-button timeout cleanup after join status responses.
+
+---
+
+## [v2.0.2] — 2026-06-02
+
+### Fixed
+- Peer identity spoofing in relay server: client-supplied `peerId` could be used to impersonate other peers in PEER_STATUS events. Server now always stamps `peerId` with the authenticated sender's identity.
+- Amazon domain detection: replaced broad `includes('amazon.')` substring check with boundary-safe regex that correctly matches all Amazon storefronts (`amazon.com`, `amazon.de`, `amazon.co.uk`, etc.) while rejecting lookalike domains.
+
+---
+
+## [v2.0.1] — 2026-06-01
+
+### Fixed
+- Video detection on Prime Video: `findVideo()` now scores all video elements by size, duration, and mute state instead of picking the first one. Fixes 0×0 placeholder being selected over the actual player.
+- History entries in debug report showing `?` instead of action names.
+- Prime Video status in compatibility matrix updated to reflect partial support.
+
+### Added
+- Multi-video overview table in Copy Debug Report when a page has more than one `<video>` element. Shows resolution, mute state, playback state, readyState, duration, and marks the currently targeted video.
+
+---
+
+## [v2.0.0] — 2026-06-01
+
+### 🌍 Multi-Language Extension (Biggest Feature!)
+- **6-Language UI**: The browser extension is now fully translated into **English, German, French, Spanish, Portuguese (Brazilian), and Russian**. Switch languages instantly in Settings without reload.
+- **Real-Time i18n**: Every label, button, tooltip, toast notification, empty state, and onboarding guide updates dynamically when the language changes.
+
+### New Features
+- **Copy Debug Report (Markdown)**: The *Copy Logs* button in the Status tab now copies a fully formatted Markdown debug report — system info, connection status, video diagnostics, action history, and logs. One click, paste into a GitHub issue, all debugging data ready.
+- **Platform Auto-Detection**: The Dev tab now identifies streaming platforms (YouTube, Netflix, Twitch, Prime Video, Disney+, HBO Max, Vimeo, Dailymotion) and displays the detected platform.
+- **Enhanced Video Debug Info**: 20+ new fields in the Status tab including network state, buffered ranges, dimensions (with 0×0 warning), media error codes, shadow DOM status, seeking/ended/loop flags, volume, playback speed, and data attributes.
+- **No-Video Diagnostic Mode**: When no video is found, the Status tab shows platform, page title, video count, shadow DOM presence, and MediaSession data to help troubleshoot.
+
+### Changed
+- **New TwoPointZero Branding**: Updated extension icons (16/32/48/96/128px).
+- **Larger Popup Logo**: Extension popup icon increased to 48px.
+- **Prime Video Unblocked**: Removed `amazon.` from the tab blacklist so Amazon/Prime Video tabs appear in the video selector.
+- **Improved Debug Report**: Full User-Agent string for accurate browser identification, UTC timestamp, connection details including server URL and room info.
+- **Smart Disconnect**: Improved disconnect handling when leaving rooms.
+- **Human-Readable Room IDs**: Expanded word lists for friendlier room names.
+- **Custom Server Support**: WEB_JOIN_REQUEST and join button for custom server invite flows.
+- **Reconnection Strategy**: Custom server reconnection improvements.
+- **Episode-Aware Sync**: Command sequencing with smarter episode transition detection and echo suppression for smoother series binges.
+- **Sync Status Refinements**: YouTube and Twitch sync behavior improved.
+- **No External Dependencies**: Extension remains dependency-free with no library overhead.
+
+### Fixed
+- Hardcoded strings, missing translation keys, and Service Worker notification race conditions.
+
+---
+
+## Versioning Policy
+
+- **MAJOR** (x.0.0): Breaking protocol changes, architecture rewrites, or major feature milestones.
+- **MINOR** (0.x.0): New features, significant enhancements, new translations, or UI redesigns.
+- **PATCH** (0.0.x): Bug fixes, minor improvements, and documentation updates. PATCH releases may not receive individual changelog entries if bundled with a MINOR release.

docs/HOW_IT_WORKS.md

@@ -51,7 +51,7 @@ Click **"Create Room"** in the popup's Room tab:
 
 4. **Server-side processing**:
    - All fields are **sanitized**: `roomId` is stripped of invalid characters and clamped to 64 chars; `peerId` clamped to 16 chars; `password` clamped to 128 chars; `username` clamped to 30 chars.
-   - The server **hashes the password** with bcrypt and stores the hash in RAM (the plaintext is never stored).
+   - The server **hashes the password** with a keyed SHA-256 HMAC and stores only that hash in RAM (the plaintext is never stored).
    - A new room object is created in memory with the peer's data.
    - The server responds with `ROOM_DATA` containing the list of peers in the room.
 
@@ -89,7 +89,7 @@ When your friend opens the link in their browser:
    - After 500ms, the page dispatches a `KOALASYNC_JOIN_REQUEST` custom DOM event with `{ roomId, password, useCustomServer, serverUrl }`.
    - `bridge.js` catches this event and forwards it to `background.js` via `chrome.runtime.sendMessage`.
    - `background.js` stores the credentials in `chrome.storage.sync` and emits `JOIN_ROOM` to the server.
-   - The server validates the password against the stored bcrypt hash.
+   - The server validates the password against the stored keyed SHA-256 HMAC hash.
    - On success, the server responds with `ROOM_DATA` and broadcasts `PEER_STATUS { status: 'joined' }` to all existing peers.
    - The join page updates to show "✅ Successfully joined!".
 

docs/PRIVACY.md

@@ -2,12 +2,14 @@
 
 **KoalaSync does not collect, store, or sell any personal data.**
 
+*We don't track you. We only track our server* (relying exclusively on aggregated, anonymous, and non-personal system metrics to monitor performance and stability).
+
 KoalaSync is designed with a **Security-First & Volatile** architecture. This means we prioritize keeping your data out of persistent storage, though certain technical data must be processed temporarily to ensure service stability and security.
 
 ## 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.
-- **Room Passwords**: If you set a room password, it is stored only as a secure **bcrypt hash** in RAM. The server never sees or stores your plaintext password.
+- **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.
 
 ### Data Retention

docs/ROADMAP.md

@@ -1,26 +1,14 @@
 # KoalaSync Roadmap
 
-This document tracks planned features, improvements, and their implementation details.
+This document tracks future technical plans and optimizations for the KoalaSync system.
 
 ---
 
-## Offene technische Fragen
+## Planned Optimizations & Technical Roadmap
 
-### 1. Service Worker Fallback bei Room-State Verlust
-Manifest V3 suspendiert den Service Worker nach ~30s Inaktivität. `chrome.alarms` weckt ihn auf, aber:
-- **Problem:** Wenn der SW neu startet, sind alle Variablen (`currentRoom`, `socket`, `isNamespaceJoined`) weg
-- **Aktueller Stand:** `chrome.storage.session` persistiert `currentRoom`, `peerId`, `eventQueue` — der SW stellt diese beim Start wieder her (`ensureState()`)
-- **Gelöst:** WebSocket wird automatisch via `connect()` neu aufgebaut. Events werden während Reconnect gequeued und nach Namespace-Join geflushed. "Reconnecting..." Status wird im Popup + Badge angezeigt. KeepAlive-Alarm auf 30s reduziert. Reconnect-Backoff: 500ms Basis, max 5s (statt vorher 1s→30s).
-
-### 7. Tests für Extensions
-Stimmt, sind aufwändig. Praktische Ansätze:
-- **Unit Tests:** `jest` + `jest-chrome` (mockt `chrome.*` APIs) — testet `popup.js` Logik, Server-Logik
-- **Integration Tests:** `puppeteer` mit `--load-extension` Flag — testet Extension im echten Browser
-- **Server Tests:** `supertest` + `socket.io-client` — testet WebSocket-Flows
-- **Aufwand:** ~400-600 LOC für sinnvolle Testabdeckung der Kernlogik
-
----
-
-## Zukünftige Features
-
-Neue Features werden nur nach expliziter Freigabe hinzugefügt.
+### 1. Split large JavaScript files (> 800 lines) into smaller modules
+* **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.

docs/SYNC_GUIDE.md

@@ -31,7 +31,7 @@ The build script performs the following actions:
 The system enforces a strict `protocolVersion` check during the `JOIN_ROOM` handshake. 
 - The version is defined in `shared/constants.js`.
 - If the extension and server versions mismatch, the server will reject the connection with an `Incompatible protocol version` error.
-- **Always run the build script** after bumping the version number to ensure both components are updated.
+- **Never manually bump version numbers**. The CI pipeline automatically injects the version from the git tag into `manifest.base.json`, `shared/constants.js`, and `package.json` during release builds. Run the build script to synchronize other constant updates.
 
 > [!CAUTION]
 > **NEVER** edit the files inside `extension/shared/` directly. They will be overwritten the next time the build script is run. Always edit the files in the root `shared/` directory and then run the build script.

docs/TESTED_SERVICES.md

@@ -0,0 +1,46 @@
+# Tested Streaming Services
+
+This document tracks which streaming platforms and media servers have been tested with KoalaSync.
+
+| 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 | — |
+
+## Legend
+
+| Symbol | Meaning |
+|--------|---------|
+| ✅ Full | Works without limitations. |
+| ⚠️ Partial | Works with caveats (see Notes). |
+| ❌ N/A | Not applicable or not supported. |
+
+## How to Contribute
+
+Tested a service that's not listed? Found different behavior than documented?
+
+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
+
+## Technical Background
+
+KoalaSync works on any website with a **standard HTML5 `<video>` element** that allows script injection. 
+
+Limited functionality on certain platforms is typically caused by:
+- **DRM/Copy Protection** (e.g., Widevine on Netflix) which restricts access to media metadata like title and playback state
+- **Shadow DOM encapsulation** that hides video elements from content scripts
+- **Strict Content Security Policies** (CSP) that block script injection
+
+Websites with heavily obfuscated custom players (e.g., complex Shadow DOM, iframe isolation) may require platform-specific workarounds in `content.js`.

eslint.config.mjs

@@ -20,6 +20,7 @@ export default [
         fetch: "readonly",
         CustomEvent: "readonly",
         MutationObserver: "readonly",
+        IntersectionObserver: "readonly",
         Uint32Array: "readonly",
         Set: "readonly",
         Map: "readonly",
@@ -33,8 +34,10 @@ export default [
         Date: "readonly",
         Error: "readonly",
         URL: "readonly",
+        URLSearchParams: "readonly",
         WebSocket: "readonly",
-        self: "readonly"
+        self: "readonly",
+        process: "readonly"
       }
     },
     rules: {
@@ -52,7 +55,7 @@ export default [
     }
   },
   {
-    files: ["server/**/*.js", "scripts/**/*.js"],
+    files: ["server/**/*.js", "scripts/**/*.js", "website/build.js"],
     languageOptions: {
       globals: {
         require: "readonly",

examples/Caddyfile.example

@@ -0,0 +1,83 @@
+# ==============================================================================
+# KoalaSync - Production Caddy Configuration Example
+# ==============================================================================
+# This file provides examples of both a lightweight "Simple" configuration 
+# and a production-hardened "Advanced" configuration.
+# Replace domains, reverse proxy locations, and directories with your actual setup.
+
+# ------------------------------------------------------------------------------
+# OPTION A: Simple Configuration
+# ------------------------------------------------------------------------------
+# Minimal configuration that serves the static website, enables gzip compression,
+# supports extension-less Clean URLs, and reverse proxies the relay server.
+
+# sync.koalastuff.net {
+#     root * /var/www/koalasync/website/www
+#     encode zstd gzip
+#
+#     # Clean URLs support (resolves /join to join.html, etc.)
+#     try_files {path} {path}.html {path}/
+#     file_server
+# }
+#
+# syncserver.koalastuff.net {
+#     reverse_proxy localhost:3000
+# }
+
+
+# ------------------------------------------------------------------------------
+# OPTION B: Advanced Configuration (Production-Hardened)
+# ------------------------------------------------------------------------------
+# Highly secure, optimized configuration using advanced HTTP security headers,
+# aggressive static assets caching, server signature concealment, and strict 
+# hardware permission access policies.
+
+(security_headers) {
+	header {
+		# Enable HTTP Strict Transport Security (HSTS)
+		Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
+		# Prevent clickjacking attacks (Sameorigin)
+		X-Frame-Options "SAMEORIGIN"
+		# Prevent MIME-sniffing
+		X-Content-Type-Options "nosniff"
+		# Enable browser XSS protection
+		X-XSS-Protection "1; mode=block"
+		# Control referrer information
+		Referrer-Policy "strict-origin-when-cross-origin"
+		# Hide Caddy server stamp signature
+		-Server
+	}
+}
+
+sync.koalastuff.net {
+    encode zstd gzip
+    root * /var/www/koalasync/website/www
+
+    # Clean URLs: Resolves paths without .html in the URL
+    try_files {path} {path}.html {path}/
+    file_server
+
+    # Static Caching for high-performance PageSpeed (1 year with validation)
+    @static {
+        file
+        path *.ico *.css *.js *.png *.svg *.webp *.avif
+    }
+    header @static Cache-Control "public, max-age=31536000, must-revalidate"
+
+    # Security Headers & Content Security Policy (CSP)
+    import security_headers
+    header {
+        # CSP hardened with base-uri and form-action limits
+        Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; connect-src 'self'; img-src 'self' data:; object-src 'none'; frame-ancestors 'none'; base-uri 'none'; form-action 'none';"
+        
+        # Modern Permissions Policy (blocks browser hardware access for enhanced privacy)
+        Permissions-Policy "camera=(), microphone=(), geolocation=(), payment=(), usb=()"
+    }
+}
+
+syncserver.koalastuff.net {
+	import security_headers
+	encode zstd gzip
+	reverse_proxy KoalaSync:3000
+}
+

examples/docker-compose.caddy.example.yml

@@ -0,0 +1,18 @@
+services:                                                                                # Top-level key defining all containers in this Compose file
+  koala-sync:                                                                              # Name of the KoalaSync service
+    image: ghcr.io/shik3i/koalasync:latest                                                 # Pulls the latest KoalaSync image from GitHub Container Registry
+    container_name: KoalaSync                                                              # Sets a fixed container name instead of an auto-generated one
+    restart: always                                                                        # Always restart the container if it stops or if Docker starts
+    environment:                                                                           # Environment variables passed into the container
+      - TZ=Europe/Berlin                                                                   # Sets the timezone inside the container
+      - PORT=3000                                                                          # Port KoalaSync listens on inside the container
+      - MIN_VERSION=1.0.0                                                                  # Minimum client version allowed to connect
+      - MAX_ROOMS=100                                                                      # Maximum number of rooms that can exist
+      - MAX_PEERS_PER_ROOM=25                                                              # Maximum number of peers allowed per room
+      - ADMIN_METRICS_TOKEN=                                                               # Optional: 32+ char random token for aggregate-only /health metrics
+    pids_limit: 2048                                                                       # Limits the container to 2048 process IDs for safety
+    networks:                                                                              # Attaches the service to the networks listed below
+      - caddy_net                                                                          # Joins the pre-existing Caddy network for reverse proxying
+networks:                                                                                  # Top-level networks definition
+  caddy_net:                                                                                # Network name as referenced by the service
+    external: true                                                                          # Marks the network as managed outside of Compose (created by Caddy)

examples/docker-compose.ip.example.yml

@@ -0,0 +1,22 @@
+services:                                                                                # Top-level key defining all containers in this Compose file
+  koala-sync:                                                                              # Name of the KoalaSync service
+    image: ghcr.io/shik3i/koalasync:latest                                                 # Pulls the latest KoalaSync image from GitHub Container Registry
+    container_name: KoalaSync                                                              # Sets a fixed container name instead of an auto-generated one
+    restart: always                                                                        # Always restart the container if it stops or if Docker starts
+    ports:                                                                                 # Exposes the container port to the host
+      - "3000:3000"                                                                        # Maps host port 3000 to container port 3000
+    environment:                                                                           # Environment variables passed into the container
+      - TZ=Europe/Berlin                                                                   # Sets the timezone inside the container
+      - PORT=3000                                                                          # Port KoalaSync listens on inside the container
+      - MIN_VERSION=1.0.0                                                                  # Minimum client version allowed to connect
+      - MAX_ROOMS=100                                                                      # Maximum number of rooms that can exist
+      - MAX_PEERS_PER_ROOM=25                                                              # Maximum number of peers allowed per room
+      - ADMIN_METRICS_TOKEN=                                                               # Optional: 32+ char random token for aggregate-only /health metrics
+    pids_limit: 2048                                                                       # Limits the container to 2048 process IDs for safety
+    networks:                                                                              # Attaches the service to the networks listed below
+      bond0_network:                                                                       # Network name as referenced by the service
+        ipv4_address: 192.168.1.XXX                                                        # Static IPv4 address for the KoalaSync container
+networks:                                                                                  # Top-level networks definition
+  bond0_network:                                                                          # Network name inside Compose
+    external: true                                                                        # Marks the network as managed outside of Compose
+    name: bond0                                                                           # Name of the pre-existing network on the Docker host

examples/json_exporter.example.yml

@@ -0,0 +1,104 @@
+# Prometheus Community JSON Exporter Configuration Example
+# File: examples/json_exporter.example.yml
+#
+# Use this configuration to map KoalaSync admin health metrics (JSON)
+# to native Prometheus metrics.
+#
+# Usage:
+# 1. Rename this file to json_exporter.yml
+# 2. Replace "YOUR_ADMIN_METRICS_TOKEN" with your actual ADMIN_METRICS_TOKEN env value
+# 3. Mount it to the json-exporter docker container: /config.yml
+
+modules:
+  koalasync:
+    http_client_config:
+      bearer_token: "YOUR_ADMIN_METRICS_TOKEN"
+    metrics:
+      - name: koalasync_uptime_seconds
+        path: '{.uptime}'
+        help: "Uptime of the KoalaSync relay server in seconds"
+
+      - name: koalasync_rooms
+        path: '{.rooms}'
+        help: "Total active rooms"
+
+      - name: koalasync_connections
+        path: '{.connections}'
+        help: "Total active socket connections (sockets)"
+
+      - name: koalasync_peers
+        path: '{.peers}'
+        help: "Total connected peers across all rooms"
+
+      - name: koalasync_rooms_with_lobby
+        path: '{.roomsWithLobby}'
+        help: "Number of rooms waiting in an episode lobby"
+
+      - name: koalasync_avg_peers_per_room
+        path: '{.avgPeersPerRoom}'
+        help: "Average number of peers per room"
+
+      - name: koalasync_max_peers_in_room
+        path: '{.maxPeersInRoom}'
+        help: "Maximum number of peers in a single room"
+
+      - name: koalasync_memory_rss_bytes
+        path: '{.memory.rss}'
+        help: "Resident Set Size (RSS) memory usage in bytes"
+
+      - name: koalasync_memory_heap_used_bytes
+        path: '{.memory.heapUsed}'
+        help: "V8 engine heap used in bytes"
+
+      - name: koalasync_memory_heap_total_bytes
+        path: '{.memory.heapTotal}'
+        help: "V8 engine heap total in bytes"
+
+      # Rate limiter tracking — unique clients currently in each tracking window
+      # (not rate-limit denials; these include legitimate traffic too)
+
+      - name: koalasync_rate_limit_connections
+        path: '{.rateLimits.trackedClients.connections}'
+        help: "Unique clients tracked in the connection rate limiter window"
+
+      - name: koalasync_rate_limit_events
+        path: '{.rateLimits.trackedClients.events}'
+        help: "Unique sockets tracked in the event rate limiter window"
+
+      - name: koalasync_rate_limit_health
+        path: '{.rateLimits.trackedClients.health}'
+        help: "Unique IPs tracked in the health endpoint rate limiter window"
+
+      - name: koalasync_rate_limit_admin_metrics_auth
+        path: '{.rateLimits.trackedClients.adminMetricsAuth}'
+        help: "Unique IPs tracked in the admin metrics auth rate limiter window"
+
+      - name: koalasync_rate_limit_auth_failures
+        path: '{.rateLimits.trackedClients.authFailures}'
+        help: "Unique IPs tracked in the authentication failures cache"
+
+      - name: koalasync_rate_limit_room_list
+        path: '{.rateLimits.trackedClients.roomList}'
+        help: "Unique sockets in the room list cooldown cache"
+
+      # Actual rate-limit denials — incremented only when a 429 is served
+
+      - name: koalasync_rate_limit_denied_connections
+        path: '{.rateLimits.denied.connections}'
+        help: "Total connection attempts denied by rate limiter"
+
+      - name: koalasync_rate_limit_denied_events
+        path: '{.rateLimits.denied.events}'
+        help: "Total socket events denied by rate limiter"
+
+      - name: koalasync_rate_limit_denied_health
+        path: '{.rateLimits.denied.health}'
+        help: "Total health endpoint requests denied by rate limiter"
+
+      - name: koalasync_rate_limit_denied_admin_metrics_auth
+        path: '{.rateLimits.denied.adminMetricsAuth}'
+        help: "Total admin metrics auth attempts denied by rate limiter"
+
+      - name: koalasync_rate_limit_denied_room_list
+        path: '{.rateLimits.denied.roomList}'
+        help: "Total room list refresh requests denied by rate limiter"

extension/README.md

@@ -8,11 +8,12 @@ A Manifest V3 Browser Extension (Chrome & Firefox) for synchronized video playba
 - **Smart Peer IDs**: Hexadecimal IDs combined with customizable Usernames for easy identification.
 - **Dual Heartbeat**: Advanced session tracking (Background) and video synchronization (Content) to prevent ghost sessions.
 - **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.
 
 ## Tab Overview
 1. **Room**: Manage connections, view active peers, and share invitation links.
 2. **Sync**: Control video playback (Play/Pause/Force Sync) and view recent activity.
-3. **Settings**: Customize your Username and toggle domain-based Noise Filtering.
+3. **Settings**: Customize your Username, toggle domain-based Noise Filtering, and switch the App Language.
 4. **Dev**: Monitor connection status and view real-time video element metadata for debugging.
 
 ## Privacy & Permissions

extension/_locales/de/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Synchronisiere die Videowiedergabe auf YouTube, Netflix, Emby, Jellyfin und jeder HTML5-Seite in Echtzeit mit Freunden."
+  }
+}

extension/_locales/en/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends."
+  }
+}

extension/_locales/es/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Sincroniza la reproducción de video en YouTube, Netflix, Emby, Jellyfin y cualquier sitio HTML5 en tiempo real con amigos."
+  }
+}

extension/_locales/fr/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Synchronisez la lecture vidéo sur YouTube, Netflix, Emby, Jellyfin et tout site HTML5 en temps réel avec vos amis."
+  }
+}

extension/_locales/it/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Sincronizza la riproduzione video su YouTube, Netflix, Emby, Jellyfin e qualsiasi sito HTML5 in tempo reale con gli amici."
+  }
+}

extension/_locales/ja/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "YouTube、Netflix、Emby、Jellyfin、その他HTML5サイトでの動画再生を友達とリアルタイムで同期します。"
+  }
+}

extension/_locales/ko/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "YouTube, Netflix, Emby, Jellyfin 및 모든 HTML5 사이트에서 친구들과 실시간으로 비디오 재생을 동기화하세요."
+  }
+}

extension/_locales/nl/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Synchroniseer video-afspelen op YouTube, Netflix, Emby, Jellyfin en elke HTML5-site in realtime met vrienden."
+  }
+}

extension/_locales/pl/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Synchronizuj odtwarzanie wideo na YouTube, Netflix, Emby, Jellyfin i dowolnej stronie HTML5 w czasie rzeczywistym ze znajomymi."
+  }
+}

extension/_locales/pt_BR/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Sincronize a reprodução de vídeo no YouTube, Netflix, Emby, Jellyfin e qualquer site HTML5 em tempo real com amigos."
+  }
+}

extension/_locales/pt_PT/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Sincronize a reprodução de vídeo no YouTube, Netflix, Emby, Jellyfin e qualquer site HTML5 em tempo real com amigos."
+  }
+}

extension/_locales/ru/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "Синхронизируйте воспроизведение видео на YouTube, Netflix, Emby, Jellyfin и любых HTML5-сайтах в реальном времени с друзьями."
+  }
+}

extension/_locales/tr/messages.json

@@ -0,0 +1,8 @@
+{
+  "appName": {
+    "message": "KoalaSync"
+  },
+  "appDesc": {
+    "message": "YouTube, Netflix, Emby, Jellyfin ve herhangi bir HTML5 sitesinde video oynatmayı arkadaşlarınızla gerçek zamanlı olarak senkronize edin."
+  }
+}

extension/audio-options.css

@@ -0,0 +1,247 @@
+:root {
+    --bg: #0f172a;
+    --card: #1e293b;
+    --panel: #172033;
+    --accent: #6366f1;
+    --accent-hover: #818cf8;
+    --text: #f8fafc;
+    --text-muted: #94a3b8;
+    --border: #334155;
+    --radius: 8px;
+}
+
+* {
+    box-sizing: border-box;
+}
+
+body {
+    margin: 0;
+    min-height: 100vh;
+    background: var(--bg);
+    color: var(--text);
+    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+    font-size: 14px;
+}
+
+.page-shell {
+    width: min(760px, calc(100vw - 32px));
+    margin: 0 auto;
+    padding: 32px 0;
+}
+
+.page-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 20px;
+    margin-bottom: 18px;
+}
+
+.back-link {
+    display: inline-block;
+    color: var(--text-muted);
+    text-decoration: none;
+    font-size: 12px;
+    margin-bottom: 6px;
+    transition: color 0.2s;
+}
+.back-link:hover {
+    color: var(--accent);
+}
+
+.eyebrow {
+    margin: 0 0 4px;
+    color: var(--text-muted);
+    font-size: 11px;
+    font-weight: 700;
+    letter-spacing: 0.08em;
+    text-transform: uppercase;
+}
+
+h1,
+h2,
+p {
+    margin: 0;
+}
+
+h1 {
+    color: var(--accent-hover);
+    font-size: 28px;
+    font-weight: 800;
+}
+
+h2 {
+    font-size: 16px;
+}
+
+.panel {
+    background: var(--card);
+    border: 1px solid var(--border);
+    border-radius: var(--radius);
+    padding: 20px;
+    margin-bottom: 16px;
+    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
+}
+
+.muted-panel {
+    color: var(--text-muted);
+}
+
+.section-heading,
+.master-toggle,
+.inline-toggle {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 16px;
+}
+
+.master-toggle,
+.inline-toggle {
+    color: var(--text-muted);
+    font-size: 12px;
+    font-weight: 700;
+    text-transform: uppercase;
+}
+
+.preset-group {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
+    gap: 10px;
+    margin: 18px 0;
+}
+
+.preset-card {
+    min-height: 44px;
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    padding: 10px 12px;
+    background: var(--panel);
+    border: 1px solid var(--border);
+    border-radius: var(--radius);
+    color: var(--text);
+    cursor: pointer;
+    transition: border-color 0.2s, box-shadow 0.2s;
+}
+.preset-card:hover {
+    border-color: rgba(99, 102, 241, 0.4);
+}
+
+.preset-card:has(input:checked) {
+    border-color: var(--accent);
+    box-shadow: 0 0 0 1px rgba(99, 102, 241, 0.35);
+}
+
+.preset-card input {
+    accent-color: var(--accent);
+}
+
+.custom-grid {
+    display: grid;
+    gap: 12px;
+    padding: 16px;
+    background: rgba(15, 23, 42, 0.58);
+    border: 1px solid rgba(148, 163, 184, 0.16);
+    border-radius: var(--radius);
+    transition: opacity 0.3s;
+}
+
+.control-row {
+    display: grid;
+    grid-template-columns: 110px minmax(160px, 1fr) 78px 30px;
+    align-items: center;
+    gap: 10px;
+}
+
+.control-row label {
+    color: var(--text-muted);
+    font-size: 11px;
+    font-weight: 700;
+    text-transform: uppercase;
+}
+
+input[type="range"] {
+    width: 100%;
+    accent-color: var(--accent);
+}
+
+input[type="number"] {
+    width: 100%;
+    padding: 8px;
+    background: var(--bg);
+    border: 1px solid var(--border);
+    border-radius: var(--radius);
+    color: var(--text);
+    font: inherit;
+    transition: border-color 0.2s;
+}
+input[type="number"]:focus {
+    border-color: var(--accent);
+    outline: none;
+}
+
+.unit {
+    color: var(--text-muted);
+    font-size: 12px;
+}
+
+.toggle-switch {
+    position: relative;
+    display: inline-block;
+    width: 38px;
+    height: 22px;
+    flex: 0 0 auto;
+}
+
+.toggle-switch input {
+    opacity: 0;
+    width: 0;
+    height: 0;
+}
+
+.slider {
+    position: absolute;
+    cursor: pointer;
+    inset: 0;
+    background-color: #334155;
+    transition: .3s;
+    border-radius: 22px;
+}
+
+.slider:before {
+    position: absolute;
+    content: "";
+    height: 16px;
+    width: 16px;
+    left: 3px;
+    bottom: 3px;
+    background-color: #94a3b8;
+    transition: .3s;
+    border-radius: 50%;
+}
+
+input:checked + .slider {
+    background-color: var(--accent);
+}
+
+input:checked + .slider:before {
+    transform: translateX(16px);
+    background-color: white;
+}
+
+@media (max-width: 620px) {
+    .page-header,
+    .section-heading {
+        align-items: flex-start;
+        flex-direction: column;
+    }
+
+    .control-row {
+        grid-template-columns: 1fr 74px 28px;
+    }
+
+    .control-row label {
+        grid-column: 1 / -1;
+    }
+}

extension/audio-options.html

@@ -0,0 +1,104 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>KoalaSync Audio Settings</title>
+    <link rel="stylesheet" href="audio-options.css">
+</head>
+<body>
+    <main class="page-shell">
+        <header class="page-header">
+            <div>
+                <a id="backLink" href="#" class="back-link" data-i18n="AUDIO_BACK">← Back</a>
+                <p class="eyebrow">KoalaSync</p>
+                <h1 data-i18n="AUDIO_PAGE_TITLE">Audio Settings</h1>
+            </div>
+            <label class="master-toggle">
+                <span data-i18n="AUDIO_MASTER_TOGGLE">Audio Processing</span>
+                <span class="toggle-switch">
+                    <input type="checkbox" id="audioEnabled">
+                    <span class="slider"></span>
+                </span>
+            </label>
+        </header>
+
+        <section class="panel">
+            <div class="section-heading">
+                <h2 data-i18n="AUDIO_COMPRESSOR">Compressor</h2>
+                <label class="inline-toggle">
+                    <span data-i18n="AUDIO_COMPRESSOR_ENABLE">Enabled</span>
+                    <span class="toggle-switch">
+                        <input type="checkbox" id="compressorEnabled">
+                        <span class="slider"></span>
+                    </span>
+                </label>
+            </div>
+
+            <div class="preset-group" role="radiogroup" aria-label="Compressor preset">
+                <label class="preset-card">
+                    <input type="radio" name="preset" value="recommended">
+                    <span data-i18n="AUDIO_PRESET_RECOMMENDED">Recommended</span>
+                </label>
+                <label class="preset-card">
+                    <input type="radio" name="preset" value="dynamicRange">
+                    <span data-i18n="AUDIO_PRESET_DYNAMIC_RANGE">Dynamic Range</span>
+                </label>
+                <label class="preset-card">
+                    <input type="radio" name="preset" value="vocalEnhancement">
+                    <span data-i18n="AUDIO_PRESET_VOCAL_ENHANCEMENT">Vocal Enhancement</span>
+                </label>
+                <label class="preset-card">
+                    <input type="radio" name="preset" value="smooth">
+                    <span data-i18n="AUDIO_PRESET_SMOOTH">Smooth</span>
+                </label>
+                <label class="preset-card">
+                    <input type="radio" name="preset" value="custom">
+                    <span data-i18n="AUDIO_PRESET_CUSTOM">Custom</span>
+                </label>
+            </div>
+
+            <div class="custom-grid" id="customControls">
+                <div class="control-row" data-param="threshold">
+                    <label data-i18n="AUDIO_PARAM_THRESHOLD">Threshold</label>
+                    <input type="range" min="-60" max="0" step="1">
+                    <input type="number" min="-60" max="0" step="1">
+                    <span class="unit">dB</span>
+                </div>
+                <div class="control-row" data-param="knee">
+                    <label data-i18n="AUDIO_PARAM_KNEE">Knee</label>
+                    <input type="range" min="0" max="40" step="1">
+                    <input type="number" min="0" max="40" step="1">
+                    <span class="unit">dB</span>
+                </div>
+                <div class="control-row" data-param="ratio">
+                    <label data-i18n="AUDIO_PARAM_RATIO">Ratio</label>
+                    <input type="range" min="1" max="20" step="0.5">
+                    <input type="number" min="1" max="20" step="0.5">
+                    <span class="unit">:1</span>
+                </div>
+                <div class="control-row" data-param="attack">
+                    <label data-i18n="AUDIO_PARAM_ATTACK">Attack</label>
+                    <input type="range" min="0" max="1" step="0.001">
+                    <input type="number" min="0" max="1000" step="1" data-ms-input="true">
+                    <span class="unit">ms</span>
+                </div>
+                <div class="control-row" data-param="release">
+                    <label data-i18n="AUDIO_PARAM_RELEASE">Release</label>
+                    <input type="range" min="0" max="1" step="0.005">
+                    <input type="number" min="0" max="1000" step="5" data-ms-input="true">
+                    <span class="unit">ms</span>
+                </div>
+            </div>
+        </section>
+
+        <section class="panel muted-panel">
+            <div class="section-heading">
+                <h2 data-i18n="AUDIO_EQUALIZER">Equalizer</h2>
+            </div>
+            <p data-i18n="AUDIO_COMING_SOON">Coming soon</p>
+        </section>
+    </main>
+
+    <script src="audio-options.js" type="module"></script>
+</body>
+</html>

extension/audio-options.js

@@ -0,0 +1,196 @@
+import { loadLocale, translateDOM, getSystemLanguage } from './i18n.js';
+
+const 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: { ...PRESETS.custom }
+    }
+};
+const PARAM_LIMITS = {
+    threshold: { min: -60, max: 0 },
+    knee: { min: 0, max: 40 },
+    ratio: { min: 1, max: 20 },
+    attack: { min: 0, max: 1 },
+    release: { min: 0, max: 1 }
+};
+
+const elements = {
+    audioEnabled: document.getElementById('audioEnabled'),
+    compressorEnabled: document.getElementById('compressorEnabled'),
+    presetInputs: Array.from(document.querySelectorAll('input[name="preset"]')),
+    controlRows: Array.from(document.querySelectorAll('.control-row')),
+    backLink: document.getElementById('backLink')
+};
+
+let saveTimer = null;
+let isRendering = false;
+
+function cloneDefaultSettings() {
+    return JSON.parse(JSON.stringify(DEFAULT_AUDIO_SETTINGS));
+}
+
+let currentSettings = cloneDefaultSettings();
+
+function mergeAudioSettings(settings = {}) {
+    const safeSettings = settings && typeof settings === 'object' ? settings : {};
+    const defaults = cloneDefaultSettings();
+    return {
+        ...defaults,
+        ...safeSettings,
+        compressor: {
+            ...defaults.compressor,
+            ...(safeSettings.compressor || {}),
+            customParams: {
+                ...defaults.compressor.customParams,
+                ...(safeSettings.compressor?.customParams || {})
+            }
+        }
+    };
+}
+
+function debounceSave() {
+    if (saveTimer) clearTimeout(saveTimer);
+    saveTimer = setTimeout(() => {
+        chrome.storage.local.set({ audioSettings: currentSettings });
+    }, 40);
+}
+
+function getParamValue(param, value, isMsInput = false) {
+    const parsed = Number(value);
+    const candidate = Number.isFinite(parsed)
+        ? (isMsInput ? parsed / 1000 : parsed)
+        : currentSettings.compressor.customParams[param];
+    const limits = PARAM_LIMITS[param];
+    if (!limits) return candidate;
+    return Math.min(limits.max, Math.max(limits.min, candidate));
+}
+
+function formatNumber(value, param, isMsInput = false) {
+    if (isMsInput) return Math.round(value * 1000);
+    if (param === 'ratio') return Number(value).toFixed(1).replace(/\.0$/, '');
+    return value;
+}
+
+function render() {
+    isRendering = true;
+    elements.audioEnabled.checked = currentSettings.enabled === true;
+    elements.compressorEnabled.checked = currentSettings.compressor.enabled === true;
+
+    const selectedPreset = currentSettings.compressor.preset || 'recommended';
+    elements.presetInputs.forEach(input => {
+        input.checked = input.value === selectedPreset;
+    });
+
+    const params = selectedPreset === 'custom'
+        ? currentSettings.compressor.customParams
+        : PRESETS[selectedPreset] || PRESETS.recommended;
+
+    elements.controlRows.forEach(row => {
+        const param = row.dataset.param;
+        const range = row.querySelector('input[type="range"]');
+        const number = row.querySelector('input[type="number"]');
+        const value = params[param];
+        range.value = value;
+        number.value = formatNumber(value, param, number.dataset.msInput === 'true');
+    });
+    isRendering = false;
+}
+
+function setPreset(preset) {
+    currentSettings.compressor.preset = preset;
+    if (preset === 'custom') {
+        currentSettings.compressor.customParams = {
+            ...PRESETS.custom,
+            ...currentSettings.compressor.customParams
+        };
+    }
+    render();
+    debounceSave();
+}
+
+function setCustomParam(param, value) {
+    currentSettings.compressor.preset = 'custom';
+    currentSettings.compressor.customParams[param] = getParamValue(param, value);
+    render();
+    debounceSave();
+}
+
+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();
+    await loadLocale(lang);
+    translateDOM();
+
+    currentSettings = mergeAudioSettings(audioData);
+    render();
+}
+
+elements.audioEnabled.addEventListener('change', () => {
+    currentSettings.enabled = elements.audioEnabled.checked;
+    if (currentSettings.enabled && !currentSettings.compressor.enabled) {
+        currentSettings.compressor.enabled = true;
+    }
+    render();
+    debounceSave();
+});
+
+elements.compressorEnabled.addEventListener('change', () => {
+    currentSettings.compressor.enabled = elements.compressorEnabled.checked;
+    if (currentSettings.compressor.enabled) currentSettings.enabled = true;
+    render();
+    debounceSave();
+});
+
+elements.presetInputs.forEach(input => {
+    input.addEventListener('change', () => {
+        if (input.checked) setPreset(input.value);
+    });
+});
+
+elements.controlRows.forEach(row => {
+    const param = row.dataset.param;
+    const range = row.querySelector('input[type="range"]');
+    const number = row.querySelector('input[type="number"]');
+
+    range.addEventListener('input', () => {
+        if (isRendering) return;
+        setCustomParam(param, getParamValue(param, range.value));
+    });
+
+    number.addEventListener('input', () => {
+        if (isRendering) return;
+        setCustomParam(param, getParamValue(param, number.value, number.dataset.msInput === 'true'));
+    });
+});
+
+chrome.storage.onChanged.addListener((changes, area) => {
+    if (area !== 'local' || !changes.audioSettings) return;
+    currentSettings = mergeAudioSettings(changes.audioSettings.newValue);
+    render();
+});
+
+if (elements.backLink) {
+    elements.backLink.addEventListener('click', (e) => {
+        e.preventDefault();
+        window.close();
+    });
+}
+
+init().catch(err => {
+    console.error('[AudioOptions] Failed to initialize:', err);
+});

extension/bridge.js

@@ -1,3 +1,4 @@
+/* global cloneInto */
 /**
  * KoalaSync Bridge Script
  * Injected into sync.koalastuff.net to facilitate communication between 
@@ -9,6 +10,7 @@ document.documentElement.dataset.koalasyncInstalled = 'true';
 
 // 2. Listen for Join Requests from the Website
 window.addEventListener('KOALASYNC_JOIN_REQUEST', (e) => {
+    if (!e || !e.detail) return;
     const { roomId, password, useCustomServer, serverUrl } = e.detail;
     chrome.runtime.sendMessage({ 
         type: 'WEB_JOIN_REQUEST', 
@@ -16,18 +18,22 @@ window.addEventListener('KOALASYNC_JOIN_REQUEST', (e) => {
         password,
         useCustomServer,
         serverUrl
-    });
+    }).catch(() => {});
 });
 
 // 3. Listen for Status Updates from the Extension and relay to Website
 chrome.runtime.onMessage.addListener((msg) => {
+    if (!msg) return;
     if (msg.type === 'JOIN_STATUS') {
-        const event = new CustomEvent('KOALASYNC_STATUS', { 
-            detail: { 
-                success: msg.success, 
-                message: msg.message 
-            } 
-        });
-        window.dispatchEvent(event);
+        const detail = { success: msg.success, message: msg.message };
+        // Firefox MV3 content scripts run in an isolated world. When dispatching
+        // a CustomEvent with a detail object, Firefox wraps it in an XrayWrapper
+        // that the page's JavaScript cannot destructure (Permission denied).
+        // cloneInto() exposes the object to the page's context correctly.
+        // Chrome doesn't have this issue — cloneInto() is undefined there.
+        const safeDetail = typeof cloneInto === 'function'
+            ? cloneInto(detail, document.defaultView)
+            : detail;
+        window.dispatchEvent(new CustomEvent('KOALASYNC_STATUS', { detail: safeDetail }));
     }
 });

extension/content.js

@@ -29,13 +29,30 @@
     };
     // --- SHARED_EVENTS_INJECT_END ---
 
-    let expectedEvents = new Set();
-    let expectedTimeouts = {};
+    // 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 = 3.0;
+    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
 
@@ -44,35 +61,220 @@
     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;
 
-    function expectEvent(state) {
-        expectedEvents.add(state);
-        if (expectedTimeouts[state]) {
-            clearTimeout(expectedTimeouts[state]);
-            delete expectedTimeouts[state];
+    // Cache the autoSyncNextEpisode setting
+    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;
         }
-        const timeout = state === 'seek' ? 10000 : 1500;
-        expectedTimeouts[state] = setTimeout(() => {
-            expectedEvents.delete(state);
-            delete expectedTimeouts[state];
-        }, timeout);
-    }
+        _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;
+        }
+    });
 
     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 video = root.querySelector('video');
-        if (video) return video;
-        for (const el of root.querySelectorAll('*')) {
+        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) return found;
+                if (found) candidates.push(found);
             }
         }
-        return null;
+
+        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(() => {});
+        }
+        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;
+    }
+
+    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;
+        }
     }
 
     // --- Episode Auto-Sync: Detection ---
@@ -82,6 +284,43 @@
             : 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.
+    function extractEpisodeId(title) {
+        if (!title || typeof title !== 'string') return null;
+        // S01E01 patterns (with any non-alphanumeric separator between season and E)
+        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')}`;
+        // "Episode X", "Folge X", "Ep. X", "#X"
+        const ep = title.match(/(?:Episode|Folge|Ep\.?|#)\s*(\d+)/i);
+        if (ep) return `EP${String(ep[1]).padStart(3, '0')}`;
+        return null;
+    }
+
+    // Returns true if two titles likely refer to the same episode.
+    // Strict: both must have IDs and match, OR neither has IDs and exact match.
+    function sameEpisode(titleA, titleB) {
+        if (!titleA && !titleB) return true; // Both unknown → assume same (backward compat)
+        if (!titleA || !titleB) return false; // One unknown, one known → different
+        const idA = extractEpisodeId(titleA);
+        const idB = extractEpisodeId(titleB);
+        if (idA && idB) return idA === idB; // Both have parseable IDs → compare IDs
+        if (idA || idB) return false;       // One has ID, other doesn't → different
+        return titleA === titleB;            // Neither has ID → exact string match
+    }
+
+    // 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();
@@ -89,7 +328,7 @@
         // 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
-            && currentTitle !== lastKnownMediaTitle
+            && !sameEpisode(currentTitle, lastKnownMediaTitle)
             && video
             && video.currentTime < 5
             && video.readyState >= 1) {
@@ -122,11 +361,11 @@
         const video = findVideo();
         const currentTitle = getMediaTitle();
 
-        if (video && currentTitle && currentTitle === expectedTitle
+        if (video && currentTitle && sameEpisode(currentTitle, expectedTitle)
             && video.currentTime < 5 && video.readyState >= 1) {
             // Match! Pause at start and report ready.
             if (!video.paused) {
-                expectEvent('paused');
+                _setSuppress('paused');
                 video.pause();
             }
             stopLobbyPoll();
@@ -185,19 +424,19 @@
 
         try {
             const host = window.location.hostname.toLowerCase();
-            const isYouTube = host.includes('youtube.com');
-            const isTwitch  = host.includes('twitch.tv');
+            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)) {
-                        expectEvent(action === EVENTS.PLAY ? 'playing' : 'paused');
+                        _setSuppress(action === EVENTS.PLAY ? 'playing' : 'paused');
                         ytButton.click();
                     }
                     if (action === EVENTS.SEEK) {
-                        expectEvent('seek');
+                        _setSuppress('seek');
                         video.currentTime = data.targetTime;
                     }
                     return;
@@ -209,11 +448,11 @@
                 if (twitchButton) {
                     const isCurrentlyPlaying = !video.paused;
                     if ((action === EVENTS.PLAY && !isCurrentlyPlaying) || (action === EVENTS.PAUSE && isCurrentlyPlaying)) {
-                        expectEvent(action === EVENTS.PLAY ? 'playing' : 'paused');
+                        _setSuppress(action === EVENTS.PLAY ? 'playing' : 'paused');
                         twitchButton.click();
                     }
                     if (action === EVENTS.SEEK) {
-                        expectEvent('seek');
+                        _setSuppress('seek');
                         video.currentTime = data.targetTime;
                     }
                     return;
@@ -222,16 +461,16 @@
 
             // Fallback for native HTML5
             if (action === EVENTS.PLAY) {
-                expectEvent('playing');
+                _setSuppress('playing');
                 video.play().catch((e) => {
                     reportLog(`Playback prevented: ${e.message}`, 'warn');
-                    expectedEvents.delete('playing');
+                    _clearSuppress('playing');
                 });
             } else if (action === EVENTS.PAUSE) {
-                expectEvent('paused');
+                _setSuppress('paused');
                 video.pause();
             } else if (action === EVENTS.SEEK) {
-                expectEvent('seek');
+                _setSuppress('seek');
                 video.currentTime = data.targetTime;
             }
     } catch (e) {
@@ -268,15 +507,50 @@
 
     // 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;
+        }
+
         if (message.type === 'SERVER_COMMAND') {
             const { action, payload } = message;
             let actionCompleted = false;
+
+            // 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);
@@ -298,10 +572,14 @@
                         reportLog(`Media Action Error: Invalid force sync payload - ${JSON.stringify(payload)}`, 'error');
                         return;
                     }
-                    expectEvent('paused');
-                    expectEvent('seek');
+                    _setSuppress('paused');
+                    _setSuppress('seek');
                     video.pause();
-                    video.currentTime = payload.targetTime;
+                    try {
+                        video.currentTime = 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) {
@@ -345,7 +623,7 @@
         if (message.type === 'PAUSE_FOR_LOBBY') {
             const video = findVideo();
             if (video && !video.paused) {
-                expectEvent('paused');
+                _setSuppress('paused');
                 video.pause();
             }
             // Start lobby poll now that we know the feature is enabled
@@ -358,6 +636,59 @@
 
         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) {
@@ -375,30 +706,78 @@
                     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
+                    metadata,
+                    videoCount,
+                    inShadowDom,
+                    platform,
+                    allVideos
                 });
             } else {
-                sendResponse({ error: 'No video found' });
+                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
     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;
 
@@ -409,14 +788,14 @@
 
         const eventState = action === EVENTS.PLAY ? 'playing' : (action === EVENTS.PAUSE ? 'paused' : (action === EVENTS.SEEK ? 'seek' : null));
         
-        if (eventState && expectedEvents.has(eventState)) {
-            expectedEvents.delete(eventState);
-            if (expectedTimeouts[eventState]) {
-                clearTimeout(expectedTimeouts[eventState]);
-                delete expectedTimeouts[eventState];
-            }
+        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;
         
         chrome.runtime.sendMessage({
             type: 'CONTENT_EVENT',
@@ -427,12 +806,52 @@
                 mediaTitle: mediaTitle,
                 timestamp: Date.now()
             }
-        });
+        }).catch(() => {});
 
         // Trigger proactive heartbeat to push stabilized state
         scheduleProactiveHeartbeat();
     }
 
+    // --- 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; }
+        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);
 
@@ -444,29 +863,27 @@
         const current = video.currentTime;
         if (!Number.isFinite(current)) return;
 
-        // Step 1: Check expectedEvents (programmatic seek suppression)
-        if (expectedEvents.has('seek')) {
-            expectedEvents.delete('seek');
-            if (expectedTimeouts['seek']) {
-                clearTimeout(expectedTimeouts['seek']);
-                delete expectedTimeouts['seek'];
-            }
+        // Step 1: Check _suppressTimers (programmatic seek from remote peer)
+        if (_suppressTimers['seek']) {
+            _clearSuppress('seek');
             lastReportedSeekTime = current;
-            // No log — this is routine programmatic behavior (Force Sync, lobby, peer command)
             return;
         }
 
+        // 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 2: Delta check — skip micro-seeks (buffering, chapter markers, etc.)
+        // 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 3: Debounce rapid consecutive seeks (e.g. scrubbing)
-        // — wait 800ms for the user to settle before relaying
+        // 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;
@@ -478,7 +895,7 @@
             lastReportedSeekTime = settled;
             reportLog(`[Seek] Relayed @ ${settled.toFixed(2)}s (${finalDeltaStr})`, 'info');
             reportEvent(EVENTS.SEEK);
-        }, 800);
+        }, 300);
     };
 
 
@@ -492,6 +909,9 @@
     function setupListeners() {
         const video = findVideo();
         if (video) {
+            if (currentAudioVideo && currentAudioVideo !== video) {
+                bypassCurrentAudioProcessing();
+            }
             const existing = video._koalaHandlers;
             if (existing) {
                 video.removeEventListener('play', existing.play);
@@ -511,6 +931,8 @@
             if (!lastKnownMediaTitle) {
                 lastKnownMediaTitle = getMediaTitle();
             }
+
+            if (_audioSettings && _audioProcessingAllowed) applyAudioSettings(video, _audioSettings);
         }
     }
 
@@ -525,6 +947,7 @@
         if (!video && lastVideoSrc !== undefined) {
             reportLog('Video element removed from page', 'warn');
             lastVideoSrc = undefined;
+            closeAudioContext();
             return;
         }
 
@@ -605,6 +1028,24 @@
 
     // 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

extension/i18n.js

@@ -0,0 +1,136 @@
+// extension/i18n.js
+export const SUPPORTED_LANGUAGES = ['en', 'de', 'fr', 'es', 'pt-BR', 'ru', 'it', 'pl', 'tr', 'nl', 'ja', 'ko', 'pt'];
+export const DEFAULT_LANGUAGE = 'en';
+
+let activeDictionary = {};
+const dictionaryCache = {};
+let currentLanguage = null;
+
+/**
+ * Resolves, loads, and merges the target language with the English baseline fallback.
+ * @param {string} langCode - Target language (e.g. 'de')
+ */
+export async function loadLocale(langCode) {
+    const resolvedLang = SUPPORTED_LANGUAGES.includes(langCode) ? langCode : DEFAULT_LANGUAGE;
+    
+    if (currentLanguage === resolvedLang && Object.keys(activeDictionary).length > 0) {
+        return;
+    }
+
+    if (dictionaryCache[resolvedLang]) {
+        activeDictionary = dictionaryCache[resolvedLang];
+        currentLanguage = resolvedLang;
+        return;
+    }
+    
+    try {
+        // Load Baseline English
+        let enDict;
+        if (dictionaryCache[DEFAULT_LANGUAGE]) {
+            enDict = dictionaryCache[DEFAULT_LANGUAGE];
+        } else {
+            const enResponse = await fetch(chrome.runtime.getURL(`locales/${DEFAULT_LANGUAGE}.json`));
+            enDict = await enResponse.json();
+            dictionaryCache[DEFAULT_LANGUAGE] = enDict;
+        }
+        
+        if (resolvedLang === DEFAULT_LANGUAGE) {
+            activeDictionary = enDict;
+            currentLanguage = resolvedLang;
+            return;
+        }
+        
+        // Load Target Locale
+        const targetResponse = await fetch(chrome.runtime.getURL(`locales/${resolvedLang}.json`));
+        const targetDict = await targetResponse.json();
+        
+        // Airtight Fallback Merge: target overrides en, missing elements fallback to en
+        const mergedDict = Object.assign({}, enDict, targetDict);
+        dictionaryCache[resolvedLang] = mergedDict;
+        activeDictionary = mergedDict;
+        currentLanguage = resolvedLang;
+    } catch (err) {
+        console.error('[i18n] Failed to load locale. Defaulting to English:', err);
+        // Fallback directly to static English if fetching fails
+        try {
+            let enDict;
+            if (dictionaryCache[DEFAULT_LANGUAGE]) {
+                enDict = dictionaryCache[DEFAULT_LANGUAGE];
+            } else {
+                const enResponse = await fetch(chrome.runtime.getURL(`locales/${DEFAULT_LANGUAGE}.json`));
+                enDict = await enResponse.json();
+                dictionaryCache[DEFAULT_LANGUAGE] = enDict;
+            }
+            activeDictionary = enDict;
+            currentLanguage = DEFAULT_LANGUAGE;
+        } catch (_) {
+            activeDictionary = {};
+            currentLanguage = null;
+        }
+    }
+}
+
+/**
+ * Returns the translated string for a given key. Supports optional value interpolation.
+ * @param {string} key - Dictionary key
+ * @param {object} [placeholders] - Key-value map for replacements (e.g., { name: 'Alice' })
+ * @returns {string} Translated string or the key itself
+ */
+export function getMessage(key, placeholders = null) {
+    let msg = activeDictionary[key] !== undefined ? String(activeDictionary[key]) : key;
+    if (placeholders && typeof placeholders === 'object') {
+        for (const [k, v] of Object.entries(placeholders)) {
+            msg = msg.replace(new RegExp(`{${k}}`, 'g'), v);
+        }
+    }
+    return msg;
+}
+
+/**
+ * Performs dynamic DOM replacements for elements carrying data-i18n attributes.
+ */
+export function translateDOM() {
+    // 1. Text Content
+    document.querySelectorAll('[data-i18n]').forEach(el => {
+        const key = el.getAttribute('data-i18n');
+        const translated = getMessage(key);
+        
+        // Special case: Preserve logo image elements inside headers (like h1 logo)
+        const img = el.querySelector('img');
+        if (img) {
+            el.innerHTML = '';
+            el.appendChild(img);
+            el.appendChild(document.createTextNode(' ' + translated));
+        } else {
+            el.textContent = translated;
+        }
+    });
+
+    // 2. Tooltips (titles)
+    document.querySelectorAll('[data-i18n-title]').forEach(el => {
+        const key = el.getAttribute('data-i18n-title');
+        el.setAttribute('title', getMessage(key));
+    });
+
+    // 3. Placeholders
+    document.querySelectorAll('[data-i18n-placeholder]').forEach(el => {
+        const key = el.getAttribute('data-i18n-placeholder');
+        el.setAttribute('placeholder', getMessage(key));
+    });
+}
+
+/**
+ * Detects and maps the user's system language to the best supported locale.
+ * @returns {string} Supported language code
+ */
+export function getSystemLanguage() {
+    const uiLang = (typeof chrome !== 'undefined' && chrome.i18n && chrome.i18n.getUILanguage) 
+        ? chrome.i18n.getUILanguage() 
+        : '';
+    const fullLang = (navigator.language || uiLang || '').toLowerCase();
+    if (fullLang.startsWith('pt-br')) {
+        return 'pt-BR';
+    }
+    const baseLang = fullLang.split('-')[0];
+    return SUPPORTED_LANGUAGES.includes(baseLang) ? baseLang : DEFAULT_LANGUAGE;
+}

extension/locales/de.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "de",
+  "HTML_CLASS": "lang-de",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Raum",
+  "TAB_ROOM_TOOLTIP": "Raum-Einstellungen und Verbindung",
+  "TAB_SYNC": "Sync",
+  "TAB_SYNC_TOOLTIP": "Video-Synchronisations-Steuerung und Aktionen",
+  "TAB_SETTINGS": "Optionen",
+  "TAB_SETTINGS_TOOLTIP": "Erweiterungseinstellungen",
+  "TAB_STATUS": "Status",
+  "TAB_STATUS_TOOLTIP": "Erweiterte Diagnose & Protokolle",
+  "BTN_CREATE_ROOM": "+ Neuer Raum",
+  "MANUAL_CONNECT_HEADER": "Manuell verbinden / Erweitert",
+  "LABEL_SERVER": "Server",
+  "BTN_SERVER_OFFICIAL": "Offiziell",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Verwende den offiziellen, zuverlässigen Server",
+  "BTN_SERVER_CUSTOM": "Eigener",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Verbinde dich mit deinem eigenen, selbstgehosteten Server",
+  "PLACEHOLDER_SERVER_URL": "wss://dein-server:3000",
+  "LABEL_ROOM_ID": "Raum-ID",
+  "LABEL_ROOM_ID_TOOLTIP": "Der eindeutige Identifikator für deinen Sync-Raum",
+  "PLACEHOLDER_ROOM_ID": "Raum-ID eingeben",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "Die eindeutige ID des Raums, dem du beitreten möchtest",
+  "LABEL_PASSWORD": "Passwort (Optional)",
+  "LABEL_PASSWORD_TOOLTIP": "Optionales Passwort, um den Raumzugang zu beschränken",
+  "PLACEHOLDER_PASSWORD": "Raum-Passwort (optional)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Passwort für den Raum (leer lassen, wenn keines vorhanden)",
+  "BTN_JOIN_ROOM": "Raum beitreten / erstellen",
+  "BTN_JOIN_ROOM_TOOLTIP": "Mit dem Raum verbinden",
+  "LABEL_PUBLIC_ROOMS": "Öffentliche Räume",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Liste der öffentlich verfügbaren Räume auf diesem Server",
+  "BTN_REFRESH": "AKTUALISIEREN",
+  "BTN_REFRESH_TOOLTIP": "Die Liste der öffentlichen Räume aktualisieren",
+  "PUBLIC_ROOMS_REFRESHING": "Aktualisiere...",
+  "BTN_REFRESH_COOLDOWN": "WARTE {seconds}s",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "Die Raumliste kühlt ab. Versuche es in {seconds}s erneut.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Aktualisiere öffentliche Räume. Nächste Aktualisierung in {seconds}s verfügbar.",
+  "LABEL_ACTIVE_ROOM": "Aktiver Raum",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "Der Raum, mit dem du gerade verbunden bist",
+  "ACTIVE_ROOM_NONE": "KEINER",
+  "ACTIVE_SERVER_OFFICIAL": "Offizieller Server",
+  "LABEL_INVITE_LINK": "Einladungslink",
+  "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",
+  "NO_PEERS_CONNECTED": "Keine Teilnehmer verbunden",
+  "BTN_LEAVE_ROOM": "Raum verlassen",
+  "LABEL_SELECT_VIDEO": "Video auswählen",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Wähle den Browser-Tab aus, der das zu synchronisierende Video enthält",
+  "OPTION_SELECT_TAB": "-- Wähle einen Tab --",
+  "LABEL_REMOTE_CONTROL": "Fernsteuerung",
+  "BTN_COPY_INVITE": "📋 Einladungslink",
+  "BTN_COPY_INVITE_TOOLTIP": "Einladungslink kopieren",
+  "BTN_PLAY": "▶ Abspielen",
+  "BTN_PLAY_TOOLTIP": "Sende einen Play-Befehl an alle",
+  "BTN_PAUSE": "⏸ Pause",
+  "BTN_PAUSE_TOOLTIP": "Sende einen Pause-Befehl an alle",
+  "BTN_SYNC": "⚡ SYNC",
+  "BTN_SYNC_TOOLTIP": "Erzwinge die Synchronisation aller Teilnehmer",
+  "OPTION_JUMP_TO_OTHERS": "Zu anderen springen",
+  "OPTION_JUMP_TO_ME": "Zu mir springen",
+  "OPTION_JUMP_MODE_TOOLTIP": "Synchronisationsziel auswählen",
+  "LABEL_LAST_ACTIVITY": "Letzter Aktivitätsstatus",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Zeigt den neuesten Play-, Pause- oder Seek-Befehl",
+  "NO_RECENT_COMMANDS": "Keine aktuellen Befehle",
+  "LOBBY_HEADER": "EPISODEN-LOBBY",
+  "LOBBY_WAITING_FOR": "🎬 Warte auf: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "Warte auf Teilnehmer...",
+  "BTN_SKIP_PLAY": "Überspringen & Abspielen",
+  "BTN_SKIP_PLAY_TOOLTIP": "Lobby abbrechen und trotzdem abspielen",
+  "LOBBY_CONNECT_FIRST": "Zuerst Raum beitreten",
+  "LOBBY_CONNECT_FIRST_DESC": "Du musst über einen Einladungslink beitreten oder einen neuen Raum erstellen, um Videos zu synchronisieren.",
+  "BTN_CREATE_ROOM_ALT": "Neuen Raum erstellen",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Einen neuen zufälligen Raum erstellen und beitreten",
+  "LABEL_USERNAME": "Dein Benutzername",
+  "LABEL_USERNAME_TOOLTIP": "Der Benutzername hilft anderen, dich zu identifizieren.",
+  "PLACEHOLDER_USERNAME": "Anonymer Koala",
+  "LABEL_HIDE_CLUTTER": "Aufgeräumte Tab-Liste",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Filtert Nicht-Video-Tabs und irrelevante Domains heraus, um die Liste sauber zu halten",
+  "LABEL_AUTO_SYNC_NEXT": "Nächste Episode auto-syncen",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Pausiert automatisch und wartet auf alle Teilnehmer bei Episodenwechsel, startet dann synchron.",
+  "LABEL_AUTO_COPY_INVITE": "Einladungslink auto-kopieren",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Kopiert den Einladungslink automatisch beim Erstellen eines Raums.",
+  "LABEL_NOTIFICATIONS": "Browser-Benachrichtigungen",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Zeigt Systembenachrichtigungen, wenn jemand beitritt/verlässt oder abspielt/pausiert.",
+  "LABEL_LANGUAGE": "Sprache",
+  "LABEL_LANGUAGE_TOOLTIP": "Wähle deine bevorzugte Sprache für die Erweiterung aus",
+  "LABEL_TROUBLESHOOTING": "Fehlerbehebung",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Werkzeuge zur Behebung von Verbindungsproblemen",
+  "BTN_REGEN_ID": "Peer-ID neu generieren",
+  "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",
+  "LABEL_CONN_STATUS": "Verbindungsstatus",
+  "LABEL_CONN_STATUS_TOOLTIP": "Aktueller WebSocket-Verbindungsstatus",
+  "CONN_STATUS_DISCONNECTED": "Getrennt",
+  "BTN_RETRY": "WIEDERHOLEN",
+  "BTN_RETRY_TOOLTIP": "Versuchen, die Verbindung zum Server wiederherzustellen",
+  "BTN_COPY_LOGS": "Logs kopieren",
+  "BTN_COPY_LOGS_TOOLTIP": "Logs zum Teilen in die Zwischenablage kopieren",
+  "LABEL_VIDEO_DEBUG": "Video-Debug-Info",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Technische Details zum aktuell ausgewählten Video-Element",
+  "VIDEO_DEBUG_EMPTY": "Kein Tab ausgewählt oder kein Video erkannt.",
+  "LABEL_HISTORY": "Aktionsverlauf",
+  "LABEL_HISTORY_TOOLTIP": "Chronologisches Protokoll aller Sync-Befehle im Raum",
+  "HISTORY_EMPTY": "Noch keine Aktivität",
+  "LABEL_LOGS": "Logs (Letzte 50)",
+  "LABEL_LOGS_TOOLTIP": "Technische Verbindungsprotokolle zur Fehlersuche",
+  "BTN_CLEAR": "LEEREN",
+  "BTN_CLEAR_TOOLTIP": "Protokollausgabe leeren",
+  "LABEL_GITHUB": "GitHub-Repository",
+  "BTN_ONBOARDING_SKIP": "Überspringen",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Einführung überspringen",
+  "BTN_ONBOARDING_NEXT": "Weiter",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Zum nächsten Schritt gehen",
+  "ONBOARDING_1_TITLE": "Willkommen bei KoalaSync!",
+  "ONBOARDING_1_TEXT": "Schau Videos in perfekter Synchronität zusammen — egal wo ihr seid. Machen wir eine kurze Tour!",
+  "ONBOARDING_2_TITLE": "1. Raum erstellen",
+  "ONBOARDING_2_TEXT": "Hier geht's los. Erstelle einen Raum und teile den Einladungslink mit deinen Freunden.",
+  "ONBOARDING_3_TITLE": "2. Video auswählen",
+  "ONBOARDING_3_TEXT": "Wähle hier das Video aus, das du synchronisieren willst. Abspielen, Pause, Spulen — alle bleiben synchron.",
+  "ONBOARDING_4_TITLE": "3. Personalisieren",
+  "ONBOARDING_4_TEXT": "Wähle einen lustigen Benutzernamen, damit deine Freunde wissen, wer du bist.",
+  "ONBOARDING_5_TITLE": "Alles startklar!",
+  "ONBOARDING_5_TEXT": "Zeit, das Popcorn zu holen. Viel Spaß beim gemeinsamen Schauen!",
+  "ERR_CONN_TIMEOUT": "Verbindung abgelaufen. Bitte versuche es erneut.",
+  "ERR_INVALID_SERVER_URL": "Ungültiges Server-URL-Format.",
+  "ERR_IDENTITY_NOT_LOADED": "Identität noch nicht geladen. Warte kurz und versuche es erneut.",
+  "ERR_NO_PEERS_TIME": "Keine anderen Teilnehmer mit bekannter Zeit. Wechsle zu 'Zu mir springen'.",
+  "ERR_NO_VIDEO_TAB": "Verbindung zum Video-Tab fehlgeschlagen.",
+  "ERR_SELECT_VIDEO": "Bitte wähle zuerst ein Video aus!",
+  "TOAST_INVITE_COPIED": "Einladungslink kopiert!",
+  "TOAST_COPY_FAILED": "Kopieren in Zwischenablage fehlgeschlagen",
+  "TOAST_LOBBY_SKIPPED": "Episoden-Lobby übersprungen.",
+  "TOAST_LOBBY_SKIP_FAILED": "Überspringen der Lobby fehlgeschlagen.",
+  "TOAST_LOGS_COPIED": "Kopiert!",
+  "TOAST_PEER_JOINED": "{name} ist dem Raum beigetreten",
+  "TOAST_PEER_LEFT": "{name} hat den Raum verlassen",
+  "TOAST_PEER_ACTION": "{name} hat {action}",
+  "STATUS_CONNECTED": "Verbunden",
+  "STATUS_RECONNECTING": "Verbinde erneut...",
+  "STATUS_CONNECTING": "Verbinde...",
+  "STATUS_FAILED": "Fehlgeschlagen",
+  "STATUS_DISCONNECTED": "Getrennt",
+  "BTN_STATE_JOINING": "🚀 Trete bei...",
+  "BTN_STATE_RECONNECTING": "🔄 Verbinde erneut...",
+  "BTN_STATE_PLAYING": "▶ Spiele ab...",
+  "BTN_STATE_PAUSING": "⏸ Pausiere...",
+  "BTN_STATE_SYNCING_GROUP": "Synce zur Gruppe ({time})...",
+  "BTN_STATE_SYNCING": "Synchronisiere...",
+  "BTN_STATE_SYNCED": "✅ Synchronisiert!",
+  "NOTIF_PLAY": "die Wiedergabe gestartet",
+  "NOTIF_PAUSE": "die Wiedergabe pausiert",
+  "NOTIF_SEEK": "im Video gespult",
+  "NOTIF_FORCE_PREPARE": "eine erzwungene Synchronisation gestartet",
+  "NOTIF_FORCE_EXECUTE": "alle Teilnehmer synchronisiert",
+  "DEBUG_NO_TAB": "Kein Ziel-Tab ausgewählt.",
+  "DEBUG_COMM_FAIL": "Kommunikation mit dem Tab-Video fehlgeschlagen.",
+  "EMPTY_PEERS_TITLE": "Noch keine Teilnehmer",
+  "EMPTY_PEERS_HINT": "Teile deinen Einladungslink, um loszulegen",
+  "EMPTY_HISTORY_TITLE": "Noch keine Aktivität",
+  "EMPTY_HISTORY_HINT": "Abspielen, Pausieren oder Spulen, um Verlauf zu sehen",
+  "EMPTY_LOGS_TITLE": "Keine Logs",
+  "EMPTY_LOGS_HINT": "Verbindungsereignisse werden hier angezeigt",
+  "EMPTY_ROOMS_TITLE": "Keine aktiven Räume",
+  "EMPTY_ROOMS_HINT": "Raum erstellen oder aktualisieren, um öffentliche zu finden",
+  "LABEL_YOU": "Du",
+  "ONBOARDING_DONE": "Fertig!",
+  "LABEL_LOBBY_PEER_READY": "Bereit",
+  "LABEL_LOBBY_PEER_LOADING": "Lädt...",
+  "LABEL_PASSWORD_PROTECTED": "Passwortgeschützt",
+  "LABEL_PEERS_COUNT": "{count} Teilnehmer",
+  "LABEL_CUSTOM_SERVER": "Eigener Server",
+  "BTN_STATE_CREATING": "🚀 Erstelle Raum...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Episoden-Synchronisation fehlgeschlagen",
+  "NOTIF_LOBBY_CANCEL_MSG": "Auto-Sync abgebrochen: {reason}. Du musst eventuell manuell synchronisieren.",
+  "LOBBY_CANCEL_TIMEOUT": "Zeitüberschreitung",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Zeitüberschreitung (wiederhergestellt)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Alle anderen Teilnehmer haben den Raum verlassen",
+  "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_REVIEW": "★ Bewerten",
+  "FOOTER_SUPPORT_PROMPT": "Gefällt dir KoalaSync? Hinterlasse eine Bewertung!",
+  "LABEL_AUDIO_PROCESSING": "Audio-Verarbeitung",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Wendet Audioeffekte wie Kompression auf die Videowiedergabe an",
+  "AUDIO_OPEN_SETTINGS": "Öffnen",
+  "NEW_FEATURE_AUDIO": "Neu: Audio-Verarbeitung — probiere den Kompressor aus!",
+  "AUDIO_BACK": "← Zurück",
+  "AUDIO_PAGE_TITLE": "Audio-Einstellungen",
+  "AUDIO_MASTER_TOGGLE": "Audio-Verarbeitung",
+  "AUDIO_COMPRESSOR": "Kompressor",
+  "AUDIO_COMPRESSOR_ENABLE": "Aktiviert",
+  "AUDIO_PRESET": "Preset",
+  "AUDIO_PRESET_RECOMMENDED": "Empfohlen",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Dynamikumfang",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Sprache verbessern",
+  "AUDIO_PRESET_SMOOTH": "Sanft",
+  "AUDIO_PRESET_CUSTOM": "Benutzerdefiniert",
+  "AUDIO_PARAM_THRESHOLD": "Schwellwert",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Equalizer",
+  "AUDIO_COMING_SOON": "Demnächst"
+}

extension/locales/en.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "en",
+  "HTML_CLASS": "lang-en",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Room",
+  "TAB_ROOM_TOOLTIP": "Room settings and connection",
+  "TAB_SYNC": "Sync",
+  "TAB_SYNC_TOOLTIP": "Video sync controls and remote actions",
+  "TAB_SETTINGS": "Settings",
+  "TAB_SETTINGS_TOOLTIP": "Extension preferences",
+  "TAB_STATUS": "Status",
+  "TAB_STATUS_TOOLTIP": "Advanced Diagnostics & Logs",
+  "BTN_CREATE_ROOM": "+ Create New Room",
+  "MANUAL_CONNECT_HEADER": "Manual Connect / Advanced",
+  "LABEL_SERVER": "Server",
+  "BTN_SERVER_OFFICIAL": "Official",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Use the official reliable server",
+  "BTN_SERVER_CUSTOM": "Custom",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Connect to your own self-hosted server",
+  "PLACEHOLDER_SERVER_URL": "wss://your-server:3000",
+  "LABEL_ROOM_ID": "Room ID",
+  "LABEL_ROOM_ID_TOOLTIP": "The unique identifier for your sync room",
+  "PLACEHOLDER_ROOM_ID": "Enter Room ID",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "The unique ID of the room you want to join",
+  "LABEL_PASSWORD": "Password (Optional)",
+  "LABEL_PASSWORD_TOOLTIP": "Optional password to restrict room access",
+  "PLACEHOLDER_PASSWORD": "Room Password (optional)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Password for the room (leave empty if none)",
+  "BTN_JOIN_ROOM": "Join / Create Room",
+  "BTN_JOIN_ROOM_TOOLTIP": "Connect to the room",
+  "LABEL_PUBLIC_ROOMS": "Public Rooms",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "List of publicly available rooms on this server",
+  "BTN_REFRESH": "REFRESH",
+  "BTN_REFRESH_TOOLTIP": "Refresh the list of public rooms",
+  "PUBLIC_ROOMS_REFRESHING": "Refreshing...",
+  "BTN_REFRESH_COOLDOWN": "WAIT {seconds}s",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "Room list refresh is cooling down. Try again in {seconds}s.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Refreshing public rooms. Next refresh available in {seconds}s.",
+  "LABEL_ACTIVE_ROOM": "Active Room",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "The room you are currently connected to",
+  "ACTIVE_ROOM_NONE": "NONE",
+  "ACTIVE_SERVER_OFFICIAL": "Official Server",
+  "LABEL_INVITE_LINK": "Invite Link",
+  "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",
+  "NO_PEERS_CONNECTED": "No peers connected",
+  "BTN_LEAVE_ROOM": "Leave Room",
+  "LABEL_SELECT_VIDEO": "Select Video",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Choose the browser tab containing the video to sync",
+  "OPTION_SELECT_TAB": "-- Select a Tab --",
+  "LABEL_REMOTE_CONTROL": "Remote Control",
+  "BTN_COPY_INVITE": "📋 Invite Link",
+  "BTN_COPY_INVITE_TOOLTIP": "Copy Invite Link",
+  "BTN_PLAY": "▶ Play",
+  "BTN_PLAY_TOOLTIP": "Send a Play command to everyone",
+  "BTN_PAUSE": "⏸ Pause",
+  "BTN_PAUSE_TOOLTIP": "Send a Pause command to everyone",
+  "BTN_SYNC": "⚡ SYNC",
+  "BTN_SYNC_TOOLTIP": "Force all users to sync up",
+  "OPTION_JUMP_TO_OTHERS": "Jump to Others",
+  "OPTION_JUMP_TO_ME": "Jump to Me",
+  "OPTION_JUMP_MODE_TOOLTIP": "Choose sync target",
+  "LABEL_LAST_ACTIVITY": "Last Activity Status",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Shows the most recent play, pause, or seek command",
+  "NO_RECENT_COMMANDS": "No recent commands",
+  "LOBBY_HEADER": "EPISODE LOBBY",
+  "LOBBY_WAITING_FOR": "🎬 Waiting for: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "Waiting for peers...",
+  "BTN_SKIP_PLAY": "Skip & Play anyway",
+  "BTN_SKIP_PLAY_TOOLTIP": "Cancel lobby and play anyway",
+  "LOBBY_CONNECT_FIRST": "Connect to a room first",
+  "LOBBY_CONNECT_FIRST_DESC": "You need to join a room via an invite link or create a new one to sync videos.",
+  "BTN_CREATE_ROOM_ALT": "Create New Room",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Create a new random room and join it",
+  "LABEL_USERNAME": "Your Username",
+  "LABEL_USERNAME_TOOLTIP": "Username helps others identify you.",
+  "PLACEHOLDER_USERNAME": "Anonymous Koala",
+  "LABEL_HIDE_CLUTTER": "Hide Clutter Tabs",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Filters out non-video tabs and unrelated domains to keep the list clean",
+  "LABEL_AUTO_SYNC_NEXT": "Auto-Sync Next Episode",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Pauses automatically and waits for all peers when an episode changes, then sync-starts together.",
+  "LABEL_AUTO_COPY_INVITE": "Auto-Copy Invite Link",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Automatically copies the invite link to your clipboard when creating a new room.",
+  "LABEL_NOTIFICATIONS": "Browser Notifications",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Shows native system notifications when someone joins/leaves or plays/pauses.",
+  "LABEL_LANGUAGE": "App Language",
+  "LABEL_LANGUAGE_TOOLTIP": "Choose your preferred extension language",
+  "LABEL_TROUBLESHOOTING": "Troubleshooting",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Tools for fixing connection issues",
+  "BTN_REGEN_ID": "Regenerate Peer ID",
+  "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",
+  "LABEL_CONN_STATUS": "Connection Status",
+  "LABEL_CONN_STATUS_TOOLTIP": "Current WebSocket connection state",
+  "CONN_STATUS_DISCONNECTED": "Disconnected",
+  "BTN_RETRY": "RETRY",
+  "BTN_RETRY_TOOLTIP": "Attempt to reconnect to the server",
+  "BTN_COPY_LOGS": "Copy Logs",
+  "BTN_COPY_LOGS_TOOLTIP": "Copy logs to clipboard for sharing",
+  "LABEL_VIDEO_DEBUG": "Video Debug Info",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Technical details about the currently selected video element",
+  "VIDEO_DEBUG_EMPTY": "No tab selected or video detected.",
+  "LABEL_HISTORY": "Full Action History",
+  "LABEL_HISTORY_TOOLTIP": "Chronological log of all sync commands in the room",
+  "HISTORY_EMPTY": "No activity yet",
+  "LABEL_LOGS": "Logs (Last 50)",
+  "LABEL_LOGS_TOOLTIP": "Technical connection logs for debugging",
+  "BTN_CLEAR": "CLEAR",
+  "BTN_CLEAR_TOOLTIP": "Clear log output",
+  "LABEL_GITHUB": "GitHub Repository",
+  "BTN_ONBOARDING_SKIP": "Skip",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Skip the tutorial",
+  "BTN_ONBOARDING_NEXT": "Next",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Go to next step",
+  "ONBOARDING_1_TITLE": "Welcome to KoalaSync!",
+  "ONBOARDING_1_TEXT": "Watch videos together in perfect sync — no matter where you are. Let's take a quick tour!",
+  "ONBOARDING_2_TITLE": "1. Create a Room",
+  "ONBOARDING_2_TEXT": "Start here. Create a room and share the invite link with your friends.",
+  "ONBOARDING_3_TITLE": "2. Select Video",
+  "ONBOARDING_3_TEXT": "Navigate here to select the video you want to sync. Play, pause, and seek — everyone stays in sync.",
+  "ONBOARDING_4_TITLE": "3. Personalize",
+  "ONBOARDING_4_TEXT": "Pick a fun username so your friends know who you are.",
+  "ONBOARDING_5_TITLE": "You're all set!",
+  "ONBOARDING_5_TEXT": "Time to grab some popcorn. Enjoy watching together!",
+  "ERR_CONN_TIMEOUT": "Connection timed out. Please try again.",
+  "ERR_INVALID_SERVER_URL": "Invalid Server URL format.",
+  "ERR_IDENTITY_NOT_LOADED": "Identity not yet loaded. Wait a moment and try again.",
+  "ERR_NO_PEERS_TIME": "No other peers with a known time. Switch to 'Jump to Me'.",
+  "ERR_NO_VIDEO_TAB": "Could not connect to video tab.",
+  "ERR_SELECT_VIDEO": "Please select a video first!",
+  "TOAST_INVITE_COPIED": "Invite link copied!",
+  "TOAST_COPY_FAILED": "Failed to copy to clipboard",
+  "TOAST_LOBBY_SKIPPED": "Episode Lobby skipped.",
+  "TOAST_LOBBY_SKIP_FAILED": "Failed to skip lobby.",
+  "TOAST_LOGS_COPIED": "Copied!",
+  "TOAST_PEER_JOINED": "{name} joined the room",
+  "TOAST_PEER_LEFT": "{name} left the room",
+  "TOAST_PEER_ACTION": "{name} {action}",
+  "STATUS_CONNECTED": "Connected",
+  "STATUS_RECONNECTING": "Reconnecting...",
+  "STATUS_CONNECTING": "Connecting...",
+  "STATUS_FAILED": "Failed",
+  "STATUS_DISCONNECTED": "Disconnected",
+  "BTN_STATE_JOINING": "🚀 Joining...",
+  "BTN_STATE_RECONNECTING": "🔄 Reconnecting...",
+  "BTN_STATE_PLAYING": "▶ Playing...",
+  "BTN_STATE_PAUSING": "⏸ Pausing...",
+  "BTN_STATE_SYNCING_GROUP": "Syncing to group ({time})...",
+  "BTN_STATE_SYNCING": "Syncing...",
+  "BTN_STATE_SYNCED": "✅ Synced!",
+  "NOTIF_PLAY": "started playback",
+  "NOTIF_PAUSE": "paused playback",
+  "NOTIF_SEEK": "seeked the video",
+  "NOTIF_FORCE_PREPARE": "started force sync",
+  "NOTIF_FORCE_EXECUTE": "synchronized everyone",
+  "DEBUG_NO_TAB": "No target tab selected.",
+  "DEBUG_COMM_FAIL": "Could not communicate with tab video.",
+  "EMPTY_PEERS_TITLE": "No peers yet",
+  "EMPTY_PEERS_HINT": "Share your invite link to get started",
+  "EMPTY_HISTORY_TITLE": "No activity yet",
+  "EMPTY_HISTORY_HINT": "Play, pause, or seek to see history",
+  "EMPTY_LOGS_TITLE": "No logs",
+  "EMPTY_LOGS_HINT": "Connection events will appear here",
+  "EMPTY_ROOMS_TITLE": "No active rooms",
+  "EMPTY_ROOMS_HINT": "Create a room or refresh to find public ones",
+  "LABEL_YOU": "You",
+  "ONBOARDING_DONE": "Done!",
+  "LABEL_LOBBY_PEER_READY": "Ready",
+  "LABEL_LOBBY_PEER_LOADING": "Loading...",
+  "LABEL_PASSWORD_PROTECTED": "Password Protected",
+  "LABEL_PEERS_COUNT": "{count} peers",
+  "LABEL_CUSTOM_SERVER": "Custom Server",
+  "BTN_STATE_CREATING": "🚀 Creating Room...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Episode Sync Failed",
+  "NOTIF_LOBBY_CANCEL_MSG": "Auto-sync cancelled: {reason}. You may need to manually sync.",
+  "LOBBY_CANCEL_TIMEOUT": "Timeout",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Timeout (recovered)",
+  "LOBBY_CANCEL_PEERS_LEFT": "All other peers left",
+  "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_REVIEW": "★ Rate us",
+  "FOOTER_SUPPORT_PROMPT": "Enjoying KoalaSync? Leave a review!",
+  "LABEL_AUDIO_PROCESSING": "Audio Processing",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Apply audio effects like compression to video playback",
+  "AUDIO_OPEN_SETTINGS": "Open",
+  "NEW_FEATURE_AUDIO": "New: Audio Processing — try the compressor!",
+  "AUDIO_BACK": "← Back",
+  "AUDIO_PAGE_TITLE": "Audio Settings",
+  "AUDIO_MASTER_TOGGLE": "Audio Processing",
+  "AUDIO_COMPRESSOR": "Compressor",
+  "AUDIO_COMPRESSOR_ENABLE": "Enabled",
+  "AUDIO_PRESET": "Preset",
+  "AUDIO_PRESET_RECOMMENDED": "Recommended",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Dynamic Range",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Vocal Enhancement",
+  "AUDIO_PRESET_SMOOTH": "Smooth",
+  "AUDIO_PRESET_CUSTOM": "Custom",
+  "AUDIO_PARAM_THRESHOLD": "Threshold",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Equalizer",
+  "AUDIO_COMING_SOON": "Coming soon"
+}

extension/locales/es.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "es",
+  "HTML_CLASS": "lang-es",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Sala",
+  "TAB_ROOM_TOOLTIP": "Configuración de sala y conexión",
+  "TAB_SYNC": "Sincro",
+  "TAB_SYNC_TOOLTIP": "Controles de sincronización de video y acciones",
+  "TAB_SETTINGS": "Opciones",
+  "TAB_SETTINGS_TOOLTIP": "Preferencias de la extensión",
+  "TAB_STATUS": "Estado",
+  "TAB_STATUS_TOOLTIP": "Diagnósticos avanzados y registros",
+  "BTN_CREATE_ROOM": "+ Crear nueva sala",
+  "MANUAL_CONNECT_HEADER": "Conexión manual / Avanzado",
+  "LABEL_SERVER": "Servidor",
+  "BTN_SERVER_OFFICIAL": "Oficial",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Usar el servidor oficial confiable",
+  "BTN_SERVER_CUSTOM": "Perso",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Conectarse a su propio servidor auto-alojado",
+  "PLACEHOLDER_SERVER_URL": "wss://tu-servidor:3000",
+  "LABEL_ROOM_ID": "ID de sala",
+  "LABEL_ROOM_ID_TOOLTIP": "El identificador único para tu sala de sincronización",
+  "PLACEHOLDER_ROOM_ID": "Ingresa el ID de la sala",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "El ID único de la sala a la que deseas unirte",
+  "LABEL_PASSWORD": "Contraseña (Opcional)",
+  "LABEL_PASSWORD_TOOLTIP": "Contraseña opcional para restringir el acceso a la sala",
+  "PLACEHOLDER_PASSWORD": "Contraseña de la sala (opcional)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Contraseña para la sala (dejar vacío si no hay)",
+  "BTN_JOIN_ROOM": "Unirse / Crear sala",
+  "BTN_JOIN_ROOM_TOOLTIP": "Conectarse a la sala",
+  "LABEL_PUBLIC_ROOMS": "Salas públicas",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Lista de salas públicas disponibles en este servidor",
+  "BTN_REFRESH": "ACTUALIZAR",
+  "BTN_REFRESH_TOOLTIP": "Actualizar la lista de salas públicas",
+  "PUBLIC_ROOMS_REFRESHING": "Actualizando...",
+  "BTN_REFRESH_COOLDOWN": "ESPERA {seconds}s",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "La lista de salas está en espera. Inténtalo de nuevo en {seconds}s.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Actualizando salas públicas. Próxima actualización en {seconds}s.",
+  "LABEL_ACTIVE_ROOM": "Sala activa",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "La sala a la que estás conectado actualmente",
+  "ACTIVE_ROOM_NONE": "NINGUNA",
+  "ACTIVE_SERVER_OFFICIAL": "Servidor oficial",
+  "LABEL_INVITE_LINK": "Enlace de invitación",
+  "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",
+  "NO_PEERS_CONNECTED": "Sin participantes conectados",
+  "BTN_LEAVE_ROOM": "Salir de la sala",
+  "LABEL_SELECT_VIDEO": "Seleccionar video",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Elige la pestaña del navegador que contiene el video a sincronizar",
+  "OPTION_SELECT_TAB": "-- Selecciona una pestaña --",
+  "LABEL_REMOTE_CONTROL": "Control remoto",
+  "BTN_COPY_INVITE": "📋 Enlace de invitación",
+  "BTN_COPY_INVITE_TOOLTIP": "Copiar enlace de invitación",
+  "BTN_PLAY": "▶ Reproducir",
+  "BTN_PLAY_TOOLTIP": "Enviar un comando de reproducción a todos",
+  "BTN_PAUSE": "⏸ Pausar",
+  "BTN_PAUSE_TOOLTIP": "Enviar un comando de pausa a todos",
+  "BTN_SYNC": "⚡ SYNC",
+  "BTN_SYNC_TOOLTIP": "Forzar la sincronización de todos los usuarios",
+  "OPTION_JUMP_TO_OTHERS": "Unirse a otros",
+  "OPTION_JUMP_TO_ME": "Traerlos a mí",
+  "OPTION_JUMP_MODE_TOOLTIP": "Elegir el objetivo de sincronización",
+  "LABEL_LAST_ACTIVITY": "Última actividad",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Muestra el comando más reciente de reproducción, pausa o búsqueda",
+  "NO_RECENT_COMMANDS": "Sin comandos recientes",
+  "LOBBY_HEADER": "SALA DE ESPERA DE EPISODIO",
+  "LOBBY_WAITING_FOR": "🎬 Esperando a: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "Esperando participantes...",
+  "BTN_SKIP_PLAY": "Omitir y reproducir",
+  "BTN_SKIP_PLAY_TOOLTIP": "Cancelar la sala de espera y reproducir de todos modos",
+  "LOBBY_CONNECT_FIRST": "Únete a una sala primero",
+  "LOBBY_CONNECT_FIRST_DESC": "Necesitas unirte a una sala a través de un enlace de invitación o crear una nueva para sincronizar videos.",
+  "BTN_CREATE_ROOM_ALT": "Crear nueva sala",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Crear una nueva sala aleatoria y unirse",
+  "LABEL_USERNAME": "Tu nombre de usuario",
+  "LABEL_USERNAME_TOOLTIP": "El nombre de usuario ayuda a otros a identificarte.",
+  "PLACEHOLDER_USERNAME": "Koala anónimo",
+  "LABEL_HIDE_CLUTTER": "Lista de pestañas limpia",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Filtra pestañas que no son de video y dominios no relacionados para mantener limpia la lista",
+  "LABEL_AUTO_SYNC_NEXT": "Sincro auto del siguiente episodio",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Pausa automáticamente y espera a todos al cambiar de episodio, luego inicia de forma sincrónica.",
+  "LABEL_AUTO_COPY_INVITE": "Auto-copiar enlace",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Copia automáticamente el enlace de invitación a tu portapapeles al crear una nueva sala.",
+  "LABEL_NOTIFICATIONS": "Notificaciones del navegador",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Muestra notificaciones del sistema cuando alguien se une/sale o reproduce/pausa.",
+  "LABEL_LANGUAGE": "Idioma de la aplicación",
+  "LABEL_LANGUAGE_TOOLTIP": "Elige tu idioma preferido para la extensión",
+  "LABEL_TROUBLESHOOTING": "Resolución de problemas",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Herramientas para solucionar problemas de conexión",
+  "BTN_REGEN_ID": "Regenerar ID de participante",
+  "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": "¿Otro problema? Abre un Issue en GitHub",
+  "LABEL_CONN_STATUS": "Estado de la conexión",
+  "LABEL_CONN_STATUS_TOOLTIP": "Estado actual de la conexión WebSocket",
+  "CONN_STATUS_DISCONNECTED": "Desconectado",
+  "BTN_RETRY": "REINTENTAR",
+  "BTN_RETRY_TOOLTIP": "Intentar volver a conectarse al servidor",
+  "BTN_COPY_LOGS": "Copiar registros",
+  "BTN_COPY_LOGS_TOOLTIP": "Copiar registros al portapapeles para compartir",
+  "LABEL_VIDEO_DEBUG": "Información de depuración de video",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Detalles técnicos sobre el elemento de video seleccionado actualmente",
+  "VIDEO_DEBUG_EMPTY": "No hay pestaña seleccionada o no se detectó ningún video.",
+  "LABEL_HISTORY": "Historial completo",
+  "LABEL_HISTORY_TOOLTIP": "Registro cronológico de todos los comandos de sincronización en la sala",
+  "HISTORY_EMPTY": "Sin actividad aún",
+  "LABEL_LOGS": "Logs (Últimos 50)",
+  "LABEL_LOGS_TOOLTIP": "Registros técnicos de conexión para depuración",
+  "BTN_CLEAR": "LIMPIAR",
+  "BTN_CLEAR_TOOLTIP": "Limpiar salida de registros",
+  "LABEL_GITHUB": "Repositorio de GitHub",
+  "BTN_ONBOARDING_SKIP": "Omitir",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Omitir el tutorial",
+  "BTN_ONBOARDING_NEXT": "Siguiente",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Ir al siguiente paso",
+  "ONBOARDING_1_TITLE": "¡Bienvenido a KoalaSync!",
+  "ONBOARDING_1_TEXT": "Mira videos juntos en perfecta sincronización, sin importar dónde estén. ¡Hagamos un recorrido rápido!",
+  "ONBOARDING_2_TITLE": "1. Crear una sala",
+  "ONBOARDING_2_TEXT": "Comienza aquí. Crea una sala y comparte el enlace de invitación con tus amigos.",
+  "ONBOARDING_3_TITLE": "2. Seleccionar video",
+  "ONBOARDING_3_TEXT": "Navega aquí para seleccionar el video que deseas sincronizar. Reproduce, pausa y busca: todos permanecen sincronizados.",
+  "ONBOARDING_4_TITLE": "3. Personalizar",
+  "ONBOARDING_4_TEXT": "Elige un nombre de usuario divertido para que tus amigos sepan quién eres.",
+  "ONBOARDING_5_TITLE": "¡Todo listo!",
+  "ONBOARDING_5_TEXT": "Hora de preparar las palomitas. ¡Disfruta viendo con tus amigos!",
+  "ERR_CONN_TIMEOUT": "Tiempo de conexión agotado. Inténtalo de nuevo.",
+  "ERR_INVALID_SERVER_URL": "Formato de URL de servidor no válido.",
+  "ERR_IDENTITY_NOT_LOADED": "Identidad no cargada aún. Espera un momento e inténtalo de nuevo.",
+  "ERR_NO_PEERS_TIME": "No hay otros participantes con posición conocida. Cambia a 'Traerlos a mí'.",
+  "ERR_NO_VIDEO_TAB": "No se pudo conectar a la pestaña de video.",
+  "ERR_SELECT_VIDEO": "¡Selecciona un video primero!",
+  "TOAST_INVITE_COPIED": "¡Enlace de invitación copiado!",
+  "TOAST_COPY_FAILED": "Error al copiar al portapapeles",
+  "TOAST_LOBBY_SKIPPED": "Sala de espera de episodio omitida.",
+  "TOAST_LOBBY_SKIP_FAILED": "Error al omitir la sala de espera.",
+  "TOAST_LOGS_COPIED": "¡Copiado!",
+  "TOAST_PEER_JOINED": "{name} se unió a la sala",
+  "TOAST_PEER_LEFT": "{name} salió de la sala",
+  "TOAST_PEER_ACTION": "{name} ha {action}",
+  "STATUS_CONNECTED": "Conectado",
+  "STATUS_RECONNECTING": "Reconectando...",
+  "STATUS_CONNECTING": "Conectando...",
+  "STATUS_FAILED": "Error",
+  "STATUS_DISCONNECTED": "Desconectado",
+  "BTN_STATE_JOINING": "🚀 Uniéndose...",
+  "BTN_STATE_RECONNECTING": "🔄 Reconectando...",
+  "BTN_STATE_PLAYING": "▶ Reproduciendo...",
+  "BTN_STATE_PAUSING": "⏸ Pausando...",
+  "BTN_STATE_SYNCING_GROUP": "Sincronizando al grupo ({time})...",
+  "BTN_STATE_SYNCING": "Sincronizando...",
+  "BTN_STATE_SYNCED": "✅ ¡Sincronizado!",
+  "NOTIF_PLAY": "inició la reproducción",
+  "NOTIF_PAUSE": "pausó la reproducción",
+  "NOTIF_SEEK": "cambió la posición del video",
+  "NOTIF_FORCE_PREPARE": "inició una sincronización forzada",
+  "NOTIF_FORCE_EXECUTE": "sincronizó a todos",
+  "DEBUG_NO_TAB": "No hay pestaña objetivo seleccionada.",
+  "DEBUG_COMM_FAIL": "No se pudo comunicar con el video de la pestaña.",
+  "EMPTY_PEERS_TITLE": "Sin participantes aún",
+  "EMPTY_PEERS_HINT": "Comparte tu enlace de invitación para comenzar",
+  "EMPTY_HISTORY_TITLE": "Sin actividad aún",
+  "EMPTY_HISTORY_HINT": "Reproduce, pausa o busca para ver el historial",
+  "EMPTY_LOGS_TITLE": "Sin registros",
+  "EMPTY_LOGS_HINT": "Los eventos de conexión aparecerán aquí",
+  "EMPTY_ROOMS_TITLE": "Sin salas activas",
+  "EMPTY_ROOMS_HINT": "Crea una sala o actualiza para buscar salas públicas",
+  "LABEL_YOU": "Tú",
+  "ONBOARDING_DONE": "¡Hecho!",
+  "LABEL_LOBBY_PEER_READY": "Listo",
+  "LABEL_LOBBY_PEER_LOADING": "Cargando...",
+  "LABEL_PASSWORD_PROTECTED": "Protegido con contraseña",
+  "LABEL_PEERS_COUNT": "{count} participantes",
+  "LABEL_CUSTOM_SERVER": "Servidor personalizado",
+  "BTN_STATE_CREATING": "🚀 Creando sala...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Error al sincronizar episodio",
+  "NOTIF_LOBBY_CANCEL_MSG": "Sincronización automática cancelada: {reason}. Es posible que debas sincronizar manualmente.",
+  "LOBBY_CANCEL_TIMEOUT": "Tiempo de espera agotado",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Tiempo de espera agotado (recuperado)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Todos los demás participantes se han ido",
+  "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_REVIEW": "★ Valorar",
+  "FOOTER_SUPPORT_PROMPT": "¿Te gusta KoalaSync? ¡Deja una reseña!",
+  "LABEL_AUDIO_PROCESSING": "Procesamiento de audio",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Aplica efectos de audio como compresión a la reproducción de video",
+  "AUDIO_OPEN_SETTINGS": "Abrir",
+  "NEW_FEATURE_AUDIO": "Nuevo: Procesamiento de audio — ¡prueba el compresor!",
+  "AUDIO_BACK": "← Volver",
+  "AUDIO_PAGE_TITLE": "Configuración de audio",
+  "AUDIO_MASTER_TOGGLE": "Procesamiento de audio",
+  "AUDIO_COMPRESSOR": "Compresor",
+  "AUDIO_COMPRESSOR_ENABLE": "Activado",
+  "AUDIO_PRESET": "Preajuste",
+  "AUDIO_PRESET_RECOMMENDED": "Recomendado",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Rango dinámico",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Mejora de voz",
+  "AUDIO_PRESET_SMOOTH": "Suave",
+  "AUDIO_PRESET_CUSTOM": "Personalizado",
+  "AUDIO_PARAM_THRESHOLD": "Umbral",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Ecualizador",
+  "AUDIO_COMING_SOON": "Próximamente"
+}

extension/locales/fr.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "fr",
+  "HTML_CLASS": "lang-fr",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Salon",
+  "TAB_ROOM_TOOLTIP": "Paramètres de salon et connexion",
+  "TAB_SYNC": "Synchro",
+  "TAB_SYNC_TOOLTIP": "Contrôles de synchronisation vidéo et actions",
+  "TAB_SETTINGS": "Options",
+  "TAB_SETTINGS_TOOLTIP": "Préférences de l'extension",
+  "TAB_STATUS": "Statut",
+  "TAB_STATUS_TOOLTIP": "Diagnostics avancés & Journaux",
+  "BTN_CREATE_ROOM": "+ Créer un nouveau salon",
+  "MANUAL_CONNECT_HEADER": "Connexion manuelle / Avancé",
+  "LABEL_SERVER": "Serveur",
+  "BTN_SERVER_OFFICIAL": "Officiel",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Utiliser le serveur officiel fiable",
+  "BTN_SERVER_CUSTOM": "Perso",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Se connecter à votre propre serveur auto-hébergé",
+  "PLACEHOLDER_SERVER_URL": "wss://votre-serveur:3000",
+  "LABEL_ROOM_ID": "ID du salon",
+  "LABEL_ROOM_ID_TOOLTIP": "L'identifiant unique de votre salon de synchronisation",
+  "PLACEHOLDER_ROOM_ID": "Entrer l'ID du salon",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "L'ID unique du salon que vous souhaitez rejoindre",
+  "LABEL_PASSWORD": "Mot de passe (Optionnel)",
+  "LABEL_PASSWORD_TOOLTIP": "Mot de passe optionnel pour restreindre l'accès au salon",
+  "PLACEHOLDER_PASSWORD": "Mot de passe du salon (optionnel)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Mot de passe du salon (laisser vide si aucun)",
+  "BTN_JOIN_ROOM": "Rejoindre / Créer le salon",
+  "BTN_JOIN_ROOM_TOOLTIP": "Se connecter au salon",
+  "LABEL_PUBLIC_ROOMS": "Salons publics",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Liste des salons publics disponibles sur ce serveur",
+  "BTN_REFRESH": "ACTUALISER",
+  "BTN_REFRESH_TOOLTIP": "Actualiser la liste des salons publics",
+  "PUBLIC_ROOMS_REFRESHING": "Actualisation...",
+  "BTN_REFRESH_COOLDOWN": "ATTENDRE {seconds}s",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "La liste des salons est en pause. Réessayez dans {seconds}s.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Actualisation des salons publics. Prochaine actualisation dans {seconds}s.",
+  "LABEL_ACTIVE_ROOM": "Salon actif",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "Le salon auquel vous êtes actuellement connecté",
+  "ACTIVE_ROOM_NONE": "AUCUN",
+  "ACTIVE_SERVER_OFFICIAL": "Serveur officiel",
+  "LABEL_INVITE_LINK": "Lien d'invitation",
+  "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",
+  "NO_PEERS_CONNECTED": "Aucun membre connecté",
+  "BTN_LEAVE_ROOM": "Quitter le salon",
+  "LABEL_SELECT_VIDEO": "Choisir une vidéo",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Choisissez l'onglet du navigateur contenant la vidéo à synchroniser",
+  "OPTION_SELECT_TAB": "-- Choisir un onglet --",
+  "LABEL_REMOTE_CONTROL": "Contrôle à distance",
+  "BTN_COPY_INVITE": "📋 Lien d'invitation",
+  "BTN_COPY_INVITE_TOOLTIP": "Copier le lien d'invitation",
+  "BTN_PLAY": "▶ Lecture",
+  "BTN_PLAY_TOOLTIP": "Envoyer une commande Lecture à tout le monde",
+  "BTN_PAUSE": "⏸ Pause",
+  "BTN_PAUSE_TOOLTIP": "Envoyer une commande Pause à tout le monde",
+  "BTN_SYNC": "⚡ SYNC",
+  "BTN_SYNC_TOOLTIP": "Forcer tous les utilisateurs à se synchroniser",
+  "OPTION_JUMP_TO_OTHERS": "Rejoindre les autres",
+  "OPTION_JUMP_TO_ME": "Les amener à moi",
+  "OPTION_JUMP_MODE_TOOLTIP": "Choisir la cible de synchronisation",
+  "LABEL_LAST_ACTIVITY": "Dernière activité",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Affiche la dernière commande de lecture, pause ou recherche",
+  "NO_RECENT_COMMANDS": "Aucune commande récente",
+  "LOBBY_HEADER": "LOBBY D'ÉPISODE",
+  "LOBBY_WAITING_FOR": "🎬 En attente de : \"{title}\"",
+  "LOBBY_WAITING_PEERS": "En attente des membres...",
+  "BTN_SKIP_PLAY": "Ignorer & Lancer",
+  "BTN_SKIP_PLAY_TOOLTIP": "Annuler le lobby et lancer la lecture quand même",
+  "LOBBY_CONNECT_FIRST": "Rejoignez d'abord un salon",
+  "LOBBY_CONNECT_FIRST_DESC": "Vous devez rejoindre un salon via un lien d'invitation ou en créer un nouveau pour synchroniser des vidéos.",
+  "BTN_CREATE_ROOM_ALT": "Créer un nouveau salon",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Créer un salon aléatoire et le rejoindre",
+  "LABEL_USERNAME": "Votre pseudo",
+  "LABEL_USERNAME_TOOLTIP": "Votre pseudo permet aux autres de vous identifier.",
+  "PLACEHOLDER_USERNAME": "Koala anonyme",
+  "LABEL_HIDE_CLUTTER": "Liste d'onglets épurée",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Filtre les onglets non-vidéo et les domaines non pertinents pour garder la liste propre",
+  "LABEL_AUTO_SYNC_NEXT": "Synchro auto l'épisode suivant",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Met en pause et attend tous les membres lors d'un changement d'épisode, puis démarre de manière synchrone.",
+  "LABEL_AUTO_COPY_INVITE": "Copie auto du lien",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Copie automatiquement le lien d'invitation dans votre presse-papiers lors de la création d'un salon.",
+  "LABEL_NOTIFICATIONS": "Notifications de navigateur",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Affiche des notifications système lorsqu'un membre arrive/part ou lance/met en pause la lecture.",
+  "LABEL_LANGUAGE": "Langue de l'application",
+  "LABEL_LANGUAGE_TOOLTIP": "Choisissez la langue de l'application",
+  "LABEL_TROUBLESHOOTING": "Dépannage",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Outils pour résoudre les problèmes de connexion",
+  "BTN_REGEN_ID": "Régénérer l'identifiant",
+  "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",
+  "LABEL_CONN_STATUS": "Statut de la connexion",
+  "LABEL_CONN_STATUS_TOOLTIP": "Statut actuel de la connexion WebSocket",
+  "CONN_STATUS_DISCONNECTED": "Déconnecté",
+  "BTN_RETRY": "RÉESSAYER",
+  "BTN_RETRY_TOOLTIP": "Tenter de se reconnecter au serveur",
+  "BTN_COPY_LOGS": "Copier les journaux",
+  "BTN_COPY_LOGS_TOOLTIP": "Copier les journaux dans le presse-papiers",
+  "LABEL_VIDEO_DEBUG": "Infos de débogage vidéo",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Détails techniques de l'élément vidéo actuellement sélectionné",
+  "VIDEO_DEBUG_EMPTY": "Aucun onglet sélectionné ou aucune vidéo détectée.",
+  "LABEL_HISTORY": "Historique complet",
+  "LABEL_HISTORY_TOOLTIP": "Historique chronologique de toutes les commandes de synchronisation dans le salon",
+  "HISTORY_EMPTY": "Aucune activité pour le moment",
+  "LABEL_LOGS": "Journaux (50 derniers)",
+  "LABEL_LOGS_TOOLTIP": "Journaux techniques pour le débogage de la connexion",
+  "BTN_CLEAR": "EFFACER",
+  "BTN_CLEAR_TOOLTIP": "Effacer la sortie des journaux",
+  "LABEL_GITHUB": "Dépôt GitHub",
+  "BTN_ONBOARDING_SKIP": "Passer",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Passer le didacticiel",
+  "BTN_ONBOARDING_NEXT": "Suivant",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Étape suivante",
+  "ONBOARDING_1_TITLE": "Bienvenue sur KoalaSync !",
+  "ONBOARDING_1_TEXT": "Regardez des vidéos en parfaite synchronisation — où que vous soyez. Faisons un petit tour !",
+  "ONBOARDING_2_TITLE": "1. Créer un salon",
+  "ONBOARDING_2_TEXT": "Commencez ici. Créez un salon et partagez le lien d'invitation avec vos amis.",
+  "ONBOARDING_3_TITLE": "2. Choisir une vidéo",
+  "ONBOARDING_3_TEXT": "Naviguez ici pour sélectionner la vidéo à synchroniser. Lecture, pause, recherche — tout le monde reste synchrone.",
+  "ONBOARDING_4_TITLE": "3. Personnaliser",
+  "ONBOARDING_4_TEXT": "Choisissez un pseudo sympa pour que vos amis sachent qui vous êtes.",
+  "ONBOARDING_5_TITLE": "Vous êtes prêt !",
+  "ONBOARDING_5_TEXT": "Il est temps de préparer le pop-corn. Bon visionnage !",
+  "ERR_CONN_TIMEOUT": "Délai de connexion dépassé. Veuillez réessayer.",
+  "ERR_INVALID_SERVER_URL": "Format d'adresse de serveur non valide.",
+  "ERR_IDENTITY_NOT_LOADED": "Identifiant non encore chargé. Veuillez patienter et réessayer.",
+  "ERR_NO_PEERS_TIME": "Aucun autre membre avec une position connue. Basculez sur 'Les amener à moi'.",
+  "ERR_NO_VIDEO_TAB": "Impossible de se connecter à l'onglet vidéo.",
+  "ERR_SELECT_VIDEO": "Veuillez d'abord sélectionner une vidéo !",
+  "TOAST_INVITE_COPIED": "Lien d'invitation copié !",
+  "TOAST_COPY_FAILED": "Échec de la copie dans le presse-papiers",
+  "TOAST_LOBBY_SKIPPED": "Lobby d'épisode ignoré.",
+  "TOAST_LOBBY_SKIP_FAILED": "Échec de l'annulation du lobby.",
+  "TOAST_LOGS_COPIED": "Copié !",
+  "TOAST_PEER_JOINED": "{name} a rejoint le salon",
+  "TOAST_PEER_LEFT": "{name} a quitté le salon",
+  "TOAST_PEER_ACTION": "{name} a {action}",
+  "STATUS_CONNECTED": "Connecté",
+  "STATUS_RECONNECTING": "Reconnexion...",
+  "STATUS_CONNECTING": "Connexion...",
+  "STATUS_FAILED": "Échec",
+  "STATUS_DISCONNECTED": "Déconnecté",
+  "BTN_STATE_JOINING": "🚀 Connexion...",
+  "BTN_STATE_RECONNECTING": "🔄 Reconnexion...",
+  "BTN_STATE_PLAYING": "▶ Lecture...",
+  "BTN_STATE_PAUSING": "⏸ Pause...",
+  "BTN_STATE_SYNCING_GROUP": "Synchro au groupe ({time})...",
+  "BTN_STATE_SYNCING": "Synchronisation...",
+  "BTN_STATE_SYNCED": "✅ Synchronisé !",
+  "NOTIF_PLAY": "lancé la lecture",
+  "NOTIF_PAUSE": "mis la lecture en pause",
+  "NOTIF_SEEK": "déplacé la position dans la vidéo",
+  "NOTIF_FORCE_PREPARE": "lancé une synchronisation forcée",
+  "NOTIF_FORCE_EXECUTE": "synchronisé tout le monde",
+  "DEBUG_NO_TAB": "Aucun onglet cible sélectionné.",
+  "DEBUG_COMM_FAIL": "Impossible de communiquer avec l'onglet vidéo.",
+  "EMPTY_PEERS_TITLE": "Aucun membre pour l'instant",
+  "EMPTY_PEERS_HINT": "Partagez votre lien d'invitation pour commencer",
+  "EMPTY_HISTORY_TITLE": "Aucune activité pour l'instant",
+  "EMPTY_HISTORY_HINT": "Lancez, mettez en pause ou déplacez la position pour voir l'historique",
+  "EMPTY_LOGS_TITLE": "Aucun journal",
+  "EMPTY_LOGS_HINT": "Les événements de connexion s'afficheront ici",
+  "EMPTY_ROOMS_TITLE": "Aucun salon actif",
+  "EMPTY_ROOMS_HINT": "Créez un salon ou actualisez pour trouver des salons publics",
+  "LABEL_YOU": "Vous",
+  "ONBOARDING_DONE": "Terminé !",
+  "LABEL_LOBBY_PEER_READY": "Prêt",
+  "LABEL_LOBBY_PEER_LOADING": "Chargement...",
+  "LABEL_PASSWORD_PROTECTED": "Protégé par mot de passe",
+  "LABEL_PEERS_COUNT": "{count} membres",
+  "LABEL_CUSTOM_SERVER": "Serveur personnalisé",
+  "BTN_STATE_CREATING": "🚀 Création de la salle...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Échec de la synchronisation de l'épisode",
+  "NOTIF_LOBBY_CANCEL_MSG": "Synchronisation automatique annulée : {reason}. Vous devrez peut-être synchroniser manuellement.",
+  "LOBBY_CANCEL_TIMEOUT": "Délai d'attente dépassé",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Délai dépassé (récupéré)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Tous les autres membres sont partis",
+  "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_REVIEW": "★ Évaluer",
+  "FOOTER_SUPPORT_PROMPT": "Tu aimes KoalaSync? Laisse un avis!",
+  "LABEL_AUDIO_PROCESSING": "Traitement audio",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Applique des effets audio comme la compression à la lecture vidéo",
+  "AUDIO_OPEN_SETTINGS": "Ouvrir",
+  "NEW_FEATURE_AUDIO": "Nouveau : Traitement audio — essayez le compresseur !",
+  "AUDIO_BACK": "← Retour",
+  "AUDIO_PAGE_TITLE": "Paramètres audio",
+  "AUDIO_MASTER_TOGGLE": "Traitement audio",
+  "AUDIO_COMPRESSOR": "Compresseur",
+  "AUDIO_COMPRESSOR_ENABLE": "Activé",
+  "AUDIO_PRESET": "Préréglage",
+  "AUDIO_PRESET_RECOMMENDED": "Recommandé",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Plage dynamique",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Amélioration vocale",
+  "AUDIO_PRESET_SMOOTH": "Douce",
+  "AUDIO_PRESET_CUSTOM": "Personnalisé",
+  "AUDIO_PARAM_THRESHOLD": "Seuil",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Égaliseur",
+  "AUDIO_COMING_SOON": "Bientôt disponible"
+}

extension/locales/i18n_plan.md

@@ -0,0 +1,204 @@
+# KoalaSync Browser Extension v2.0 - i18n Technical Implementation Plan
+
+Welcome, future Antigravity AI agent! This document is placed directly in the codebase at `/extension/locales/i18n_plan.md` to serve as a comprehensive architectural handbook for the next steps in adding **full internationalization (i18n) support to the browser extension itself** while maintaining 100% video-sync and background communication safety.
+
+---
+
+## 🔍 Context & Audited Scope
+
+KoalaSync is a lightweight, premium browser extension (Chrome & Firefox Manifest V3) for synchronized video playback. The landing pages are already compiled dynamically in 6 languages:
+*   English (`en`)
+*   German (`de`)
+*   French (`fr`)
+*   Spanish (`es`)
+*   Portuguese (Brazil) (`pt-BR`)
+*   Russian (`ru`)
+
+Our goal is to build an identical, premium translation engine for the extension itself.
+
+---
+
+## 🏛️ Architectural Choice: Custom JSON Dictionary Engine (Approach B)
+
+We evaluated two paths:
+1.  **Approach A (Native `chrome.i18n` API):** Uses `_locales/` directory. Too rigid—cannot support real-time dynamic switching inside the extension Settings dropdown without closing/re-opening the popup.
+2.  **Approach B (Custom Unified JSON Engine):** Uses flat JSON files matching our website files (`"KEY": "Value"`). Dynamically merges the target dictionary with baseline English `en.json` at runtime, programmatically providing an **airtight English fallback** and **real-time DOM translations** without popup reload.
+
+We chose **Approach B** for maximum compatibility, premium real-time toggling, and clean fallback safety.
+
+---
+
+## 🔄 Resolve, Load, & State Flow
+
+1.  **On launch:** Look for saved language in `chrome.storage.sync.get('locale')`.
+2.  **Fallback Autodetect:** If no saved language, read `navigator.language` or `chrome.i18n.getUILanguage()`.
+    *   If the detected locale is supported, set as active.
+    *   If not supported, default to English (`en`).
+3.  **Dictionary Resolution:**
+    *   Asynchronously load the English baseline dictionary (`/extension/locales/en.json`).
+    *   If the target language is different, load target JSON (e.g. `/extension/locales/de.json`) and execute `Object.assign({}, enDict, targetDict)`. This guarantees dynamic translation while cleanly falling back to English for any missing keys.
+4.  **DOM Replacements:** Scan for `data-i18n`, `data-i18n-title`, and `data-i18n-placeholder` attributes, and translate them on the fly.
+5.  **Persistence:** Save dynamic selection modifications from the dropdown into `chrome.storage.sync`. Trigger instant DOM re-translation on change.
+
+---
+
+## 📂 Proposed File Structure
+
+```
+KoalaPlay/
+└── extension/
+    ├── locales/                # [NEW] Contains flat translation maps
+    │   ├── i18n_plan.md        # This roadmap file
+    │   ├── en.json             # Flat English baseline keys
+    │   ├── de.json             # German keys
+    │   ├── fr.json             # French keys
+    │   ├── es.json             # Spanish keys
+    │   ├── pt-BR.json          # Portuguese (Brasil) keys
+    │   └── ru.json             # Russian keys
+    ├── i18n.js                 # [NEW] ESM translation engine module
+    ├── popup.html              # Modified with data-i18n attributes
+    ├── popup.js                # Modified to initialize locales and update variables
+    └── background.js           # Modified to push localized notification alerts
+```
+
+---
+
+## 🛠️ Draft Code Snippets
+
+### 1. `i18n.js` (Zero-Dependency Engine Module)
+```javascript
+// extension/i18n.js
+export const SUPPORTED_LANGUAGES = ['en', 'de', 'fr', 'es', 'pt-BR', 'ru'];
+export const DEFAULT_LANGUAGE = 'en';
+
+let activeDictionary = {};
+
+export async function loadLocale(langCode) {
+    const resolvedLang = SUPPORTED_LANGUAGES.includes(langCode) ? langCode : DEFAULT_LANGUAGE;
+    try {
+        const enResponse = await fetch(chrome.runtime.getURL(`locales/${DEFAULT_LANGUAGE}.json`));
+        const enDict = await enResponse.json();
+        
+        if (resolvedLang === DEFAULT_LANGUAGE) {
+            activeDictionary = enDict;
+            return;
+        }
+
+        const targetResponse = await fetch(chrome.runtime.getURL(`locales/${resolvedLang}.json`));
+        const targetDict = await targetResponse.json();
+        
+        activeDictionary = Object.assign({}, enDict, targetDict);
+    } catch (err) {
+        console.error('[i18n] Failed to load dictionary. Falling back to English:', err);
+        const rescue = await fetch(chrome.runtime.getURL(`locales/${DEFAULT_LANGUAGE}.json`));
+        activeDictionary = await rescue.json();
+    }
+}
+
+export function getMessage(key) {
+    return activeDictionary[key] || key;
+}
+
+export function translateDOM() {
+    // Translate text nodes
+    document.querySelectorAll('[data-i18n]').forEach(el => {
+        const key = el.getAttribute('data-i18n');
+        const translated = getMessage(key);
+        const img = el.querySelector('img');
+        if (img) {
+            el.innerHTML = '';
+            el.appendChild(img);
+            el.appendChild(document.createTextNode(' ' + translated));
+        } else {
+            el.textContent = translated;
+        }
+    });
+
+    // Translate tooltips
+    document.querySelectorAll('[data-i18n-title]').forEach(el => {
+        const key = el.getAttribute('data-i18n-title');
+        el.setAttribute('title', getMessage(key));
+    });
+
+    // Translate placeholders
+    document.querySelectorAll('[data-i18n-placeholder]').forEach(el => {
+        const key = el.getAttribute('data-i18n-placeholder');
+        el.setAttribute('placeholder', getMessage(key));
+    });
+}
+```
+
+### 2. Markup Changes (`popup.html`)
+*   Annotate text elements: `<button class="tab-btn" data-tab="tab-settings" data-i18n="TAB_SETTINGS" data-i18n-title="TAB_SETTINGS_TOOLTIP">Settings</button>`
+*   Add Language Dropdown in the Settings Panel:
+    ```html
+    <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;" data-i18n="LABEL_LANGUAGE" title="Choose your preferred extension language">App Language</label>
+        <select id="langSelector" style="width: 150px; padding: 6px 10px; font-size: 13px; cursor: pointer;">
+            <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>
+        </select>
+    </div>
+    ```
+
+### 3. Dynamic Script Wiring (`popup.js`)
+*   Import our engine: `import { loadLocale, translateDOM, getMessage } from './i18n.js';`
+*   Initialize during startup:
+    ```javascript
+    async function init() {
+        const data = await chrome.storage.sync.get(['locale', ...]);
+        let activeLang = data.locale;
+        if (!activeLang) {
+            const systemLang = (navigator.language || chrome.i18n.getUILanguage()).split('-')[0];
+            activeLang = ['en', 'de', 'fr', 'es', 'pt', 'ru'].includes(systemLang) ? (systemLang === 'pt' ? 'pt-BR' : systemLang) : 'en';
+            chrome.storage.sync.set({ locale: activeLang });
+        }
+        await loadLocale(activeLang);
+        translateDOM();
+        
+        // Select matching option in selector
+        const langSelector = document.getElementById('langSelector');
+        if (langSelector) langSelector.value = activeLang;
+        
+        // rest of standard init...
+    }
+    ```
+*   Listen to Settings change event:
+    ```javascript
+    const langSelector = document.getElementById('langSelector');
+    if (langSelector) {
+        langSelector.addEventListener('change', async () => {
+            const selectedLang = langSelector.value;
+            await chrome.storage.sync.set({ locale: selectedLang });
+            await loadLocale(selectedLang);
+            translateDOM();
+            // Re-render empty elements and tab list using new dynamic strings
+            refreshLogs();
+            refreshHistory();
+            populateTabs();
+        });
+    }
+    ```
+
+### 4. Background Notifications (`background.js`)
+*   Notifications inside `showNotification` should fetch dynamic keys based on `chrome.storage.sync` language settings and build clean alerts dynamically using `chrome.storage.sync.get('locale')`.
+*   Ensure that WebSocket event transmissions and video player scripts in `content.js` remain **completely untouched and unaware** of the localization engine.
+
+---
+
+## 🔒 Safety Guardrail
+
+*   **WebSocket Engine Integrity:** Under no circumstances should `background.js` Socket.IO handshakes, rate limits, or binary protocol headers be adjusted. i18n is strictly an interface rendering skin layer.
+*   **Player Control Pipeline Integrity:** `content.js` expectedEvent suppression tables, HLS buffer calculations, and Media Session API listeners must remain untouched. Do not bind any i18n logic into the content script's active tracking loop.
+
+---
+
+## 🧪 Verification Tasks
+
+1.  **Autodetection Audit:** Force-load the extension in Chrome/Firefox in a non-English language container and ensure it starts in that language or English gracefully.
+2.  **Integrity Validation Script:** Write a sanity node checker script `/scripts/test-locales.js` to ensure all key structures are uniform across all JSON files.
+3.  **Real-Time Refresh Verification:** Change dynamic drop-down preferences and verify that every element and alert swaps languages cleanly with zero redraw glitches or page crashes.

extension/locales/it.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "it",
+  "HTML_CLASS": "lang-it",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Stanza",
+  "TAB_ROOM_TOOLTIP": "Impostazioni della stanza e connessione",
+  "TAB_SYNC": "Sincronizza",
+  "TAB_SYNC_TOOLTIP": "Controlli di sincronizzazione video e azioni remote",
+  "TAB_SETTINGS": "Impostazioni",
+  "TAB_SETTINGS_TOOLTIP": "Preferenze dell'estensione",
+  "TAB_STATUS": "Stato",
+  "TAB_STATUS_TOOLTIP": "Diagnostica avanzata e log",
+  "BTN_CREATE_ROOM": "+ Crea Nuova Stanza",
+  "MANUAL_CONNECT_HEADER": "Connessione Manuale / Avanzata",
+  "LABEL_SERVER": "Server",
+  "BTN_SERVER_OFFICIAL": "Ufficiale",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Usa il server ufficiale affidabile",
+  "BTN_SERVER_CUSTOM": "Personalizzato",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Connettiti al tuo server ospitato autonomamente",
+  "PLACEHOLDER_SERVER_URL": "wss://tuo-server:3000",
+  "LABEL_ROOM_ID": "ID Stanza",
+  "LABEL_ROOM_ID_TOOLTIP": "L'identificatore univoco per la tua stanza di sincronizzazione",
+  "PLACEHOLDER_ROOM_ID": "Inserisci ID Stanza",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "L'ID univoco della stanza a cui vuoi unirti",
+  "LABEL_PASSWORD": "Password (Opzionale)",
+  "LABEL_PASSWORD_TOOLTIP": "Password opzionale per limitare l'accesso alla stanza",
+  "PLACEHOLDER_PASSWORD": "Password della stanza (opzionale)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Password per la stanza (lascia vuoto se nessuna)",
+  "BTN_JOIN_ROOM": "Entra / Crea Stanza",
+  "BTN_JOIN_ROOM_TOOLTIP": "Connettiti alla stanza",
+  "LABEL_PUBLIC_ROOMS": "Stanze Pubbliche",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Elenco delle stanze pubblicamente disponibili su questo server",
+  "BTN_REFRESH": "AGGIORNA",
+  "BTN_REFRESH_TOOLTIP": "Aggiorna l'elenco delle stanze pubbliche",
+  "PUBLIC_ROOMS_REFRESHING": "Aggiornamento...",
+  "BTN_REFRESH_COOLDOWN": "ATTENDI {seconds}s",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "L'aggiornamento dell'elenco è in pausa. Riprova tra {seconds}s.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Aggiornamento stanze pubbliche. Prossimo aggiornamento disponibile tra {seconds}s.",
+  "LABEL_ACTIVE_ROOM": "Stanza Attiva",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "La stanza a cui sei attualmente connesso",
+  "ACTIVE_ROOM_NONE": "NESSUNA",
+  "ACTIVE_SERVER_OFFICIAL": "Server Ufficiale",
+  "LABEL_INVITE_LINK": "Link di Invito",
+  "LABEL_INVITE_LINK_TOOLTIP": "Condividi questo link con gli amici per farli entrare",
+  "LABEL_PEERS_IN_ROOM": "Partecipanti nella Stanza",
+  "LABEL_PEERS_IN_ROOM_TOOLTIP": "Altri utenti attualmente connessi a questa stanza",
+  "NO_PEERS_CONNECTED": "Nessun partecipante connesso",
+  "BTN_LEAVE_ROOM": "Lascia Stanza",
+  "LABEL_SELECT_VIDEO": "Seleziona Video",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Scegli la scheda del browser contenente il video da sincronizzare",
+  "OPTION_SELECT_TAB": "-- Seleziona una Scheda --",
+  "LABEL_REMOTE_CONTROL": "Controllo Remoto",
+  "BTN_COPY_INVITE": "📋 Link di Invito",
+  "BTN_COPY_INVITE_TOOLTIP": "Copia Link di Invito",
+  "BTN_PLAY": "▶ Riproduci",
+  "BTN_PLAY_TOOLTIP": "Invia un comando di riproduzione a tutti",
+  "BTN_PAUSE": "⏸ Pausa",
+  "BTN_PAUSE_TOOLTIP": "Invia un comando di pausa a tutti",
+  "BTN_SYNC": "⚡ SYNC",
+  "BTN_SYNC_TOOLTIP": "Forza la sincronizzazione di tutti gli utenti",
+  "OPTION_JUMP_TO_OTHERS": "Salto dagli Altri",
+  "OPTION_JUMP_TO_ME": "Salto da Me",
+  "OPTION_JUMP_MODE_TOOLTIP": "Scegli il target di sincronizzazione",
+  "LABEL_LAST_ACTIVITY": "Stato Ultima Attività",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Mostra il comando più recente di riproduzione, pausa o ricerca",
+  "NO_RECENT_COMMANDS": "Nessun comando recente",
+  "LOBBY_HEADER": "LOBBY EPISODIO",
+  "LOBBY_WAITING_FOR": "🎬 In attesa di: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "In attesa dei partecipanti...",
+  "BTN_SKIP_PLAY": "Salta e riproduci comunque",
+  "BTN_SKIP_PLAY_TOOLTIP": "Annulla la lobby e riproduci comunque",
+  "LOBBY_CONNECT_FIRST": "Connettiti prima a una stanza",
+  "LOBBY_CONNECT_FIRST_DESC": "Devi unirti a una stanza tramite un link di invito o crearne una nuova per sincronizzare i video.",
+  "BTN_CREATE_ROOM_ALT": "Crea Nuova Stanza",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Crea una nuova stanza casuale ed entra",
+  "LABEL_USERNAME": "Tuo Nome Utente",
+  "LABEL_USERNAME_TOOLTIP": "Il nome utente aiuta gli altri a identificarti.",
+  "PLACEHOLDER_USERNAME": "Koala Anonimo",
+  "LABEL_HIDE_CLUTTER": "Nascondi Schede Inutili",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Filtra le schede senza video e i domini non correlati per mantenere pulito l'elenco",
+  "LABEL_AUTO_SYNC_NEXT": "Auto-Sync Prossimo Episodio",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Pausa automaticamente e attende tutti i partecipanti al cambio episodio, poi si avvia in sincro.",
+  "LABEL_AUTO_COPY_INVITE": "Copia Automatica Invito",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Copia automaticamente il link di invito negli appunti quando crei una nuova stanza.",
+  "LABEL_NOTIFICATIONS": "Notifiche del Browser",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Mostra le notifiche di sistema quando qualcuno entra/esce o riproduce/mette in pausa.",
+  "LABEL_LANGUAGE": "Lingua Applicazione",
+  "LABEL_LANGUAGE_TOOLTIP": "Scegli la lingua preferita per l'estensione",
+  "LABEL_TROUBLESHOOTING": "Risoluzione Problemi",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Strumenti per risolvere problemi di connessione",
+  "BTN_REGEN_ID": "Rigenera ID Peer",
+  "BTN_REGEN_ID_TOOLTIP": "Rigenera il tuo ID interno e riconnettiti",
+  "REGEN_ID_DESC": "Usa questo se riscontri errori di \"Identità Duplicata\".",
+  "REGEN_ID_OTHER_ISSUE": "Altro problema? Apri una Issue su GitHub",
+  "LABEL_CONN_STATUS": "Stato Connessione",
+  "LABEL_CONN_STATUS_TOOLTIP": "Stato corrente della connessione WebSocket",
+  "CONN_STATUS_DISCONNECTED": "Disconnesso",
+  "BTN_RETRY": "RIPROVA",
+  "BTN_RETRY_TOOLTIP": "Tenta di riconnettersi al server",
+  "BTN_COPY_LOGS": "Copia Log",
+  "BTN_COPY_LOGS_TOOLTIP": "Copia i log negli appunti per la condivisione",
+  "LABEL_VIDEO_DEBUG": "Info Debug Video",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Dettagli tecnici sull'elemento video attualmente selezionato",
+  "VIDEO_DEBUG_EMPTY": "Nessuna scheda selezionata o video rilevato.",
+  "LABEL_HISTORY": "Cronologia Azioni Completa",
+  "LABEL_HISTORY_TOOLTIP": "Registro cronologico di tutti i comandi di sincronizzazione nella stanza",
+  "HISTORY_EMPTY": "Ancora nessuna attività",
+  "LABEL_LOGS": "Log (Ultimi 50)",
+  "LABEL_LOGS_TOOLTIP": "Log di connessione tecnica per il debug",
+  "BTN_CLEAR": "PULISCI",
+  "BTN_CLEAR_TOOLTIP": "Cancella l'output del log",
+  "LABEL_GITHUB": "Repository GitHub",
+  "BTN_ONBOARDING_SKIP": "Salta",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Salta il tutorial",
+  "BTN_ONBOARDING_NEXT": "Avanti",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Vai al passaggio successivo",
+  "ONBOARDING_1_TITLE": "Benvenuto in KoalaSync!",
+  "ONBOARDING_1_TEXT": "Guarda i video insieme in perfetta sincronia, non importa dove ti trovi. Facciamo un rapido tour!",
+  "ONBOARDING_2_TITLE": "1. Crea una Stanza",
+  "ONBOARDING_2_TEXT": "Inizia qui. Crea una stanza e condividi il link di invito con i tuoi amici.",
+  "ONBOARDING_3_TITLE": "2. Seleziona Video",
+  "ONBOARDING_3_TEXT": "Naviga qui per selezionare il video che vuoi sincronizzare. Riproduci, metti in pausa e cerca: tutti rimangono sincronizzati.",
+  "ONBOARDING_4_TITLE": "3. Personalizza",
+  "ONBOARDING_4_TEXT": "Scegli un nome utente divertente così i tuoi amici sanno chi sei.",
+  "ONBOARDING_5_TITLE": "Tutto pronto!",
+  "ONBOARDING_5_TEXT": "È ora di prendere i popcorn. Buona visione insieme!",
+  "ERR_CONN_TIMEOUT": "Connessione scaduta. Riprova.",
+  "ERR_INVALID_SERVER_URL": "Formato URL del server non valido.",
+  "ERR_IDENTITY_NOT_LOADED": "Identità non ancora caricata. Attendi un momento e riprova.",
+  "ERR_NO_PEERS_TIME": "Nessun altro peer con un orario noto. Passa a 'Salto da Me'.",
+  "ERR_NO_VIDEO_TAB": "Impossibile connettersi alla scheda del video.",
+  "ERR_SELECT_VIDEO": "Seleziona prima un video!",
+  "TOAST_INVITE_COPIED": "Link di invito copiato!",
+  "TOAST_COPY_FAILED": "Impossibile copiare negli appunti",
+  "TOAST_LOBBY_SKIPPED": "Lobby dell'episodio saltata.",
+  "TOAST_LOBBY_SKIP_FAILED": "Impossibile saltare la lobby.",
+  "TOAST_LOGS_COPIED": "Copiato!",
+  "TOAST_PEER_JOINED": "{name} è entrato nella stanza",
+  "TOAST_PEER_LEFT": "{name} ha lasciato la stanza",
+  "TOAST_PEER_ACTION": "{name} ha {action}",
+  "STATUS_CONNECTED": "Connesso",
+  "STATUS_RECONNECTING": "Riconnessione...",
+  "STATUS_CONNECTING": "Connessione in corso...",
+  "STATUS_FAILED": "Fallito",
+  "STATUS_DISCONNECTED": "Disconnesso",
+  "BTN_STATE_JOINING": "🚀 Entrando...",
+  "BTN_STATE_RECONNECTING": "🔄 Riconnessione...",
+  "BTN_STATE_PLAYING": "▶ Riproduzione...",
+  "BTN_STATE_PAUSING": "⏸ In pausa...",
+  "BTN_STATE_SYNCING_GROUP": "Sincronizzazione al gruppo ({time})...",
+  "BTN_STATE_SYNCING": "Sincronizzazione...",
+  "BTN_STATE_SYNCED": "✅ Sincronizzato!",
+  "NOTIF_PLAY": "avviato la riproduzione",
+  "NOTIF_PAUSE": "messo in pausa la riproduzione",
+  "NOTIF_SEEK": "cercato nel video",
+  "NOTIF_FORCE_PREPARE": "avviato la sincronizzazione forzata",
+  "NOTIF_FORCE_EXECUTE": "sincronizzato tutti",
+  "DEBUG_NO_TAB": "Nessuna scheda di destinazione selezionata.",
+  "DEBUG_COMM_FAIL": "Impossibile comunicare con il video della scheda.",
+  "EMPTY_PEERS_TITLE": "Ancora nessun partecipante",
+  "EMPTY_PEERS_HINT": "Condividi il tuo link di invito per iniziare",
+  "EMPTY_HISTORY_TITLE": "Ancora nessuna attività",
+  "EMPTY_HISTORY_HINT": "Riproduci, metti in pausa o cerca per vedere la cronologia",
+  "EMPTY_LOGS_TITLE": "Nessun log",
+  "EMPTY_LOGS_HINT": "Gli eventi di connessione appariranno qui",
+  "EMPTY_ROOMS_TITLE": "Nessuna stanza attiva",
+  "EMPTY_ROOMS_HINT": "Crea una stanza o aggiorna per trovare quelle pubbliche",
+  "LABEL_YOU": "Tu",
+  "ONBOARDING_DONE": "Fatto!",
+  "LABEL_LOBBY_PEER_READY": "Pronto",
+  "LABEL_LOBBY_PEER_LOADING": "Caricamento...",
+  "LABEL_PASSWORD_PROTECTED": "Protetto da Password",
+  "LABEL_PEERS_COUNT": "{count} partecipanti",
+  "LABEL_CUSTOM_SERVER": "Server Personalizzato",
+  "BTN_STATE_CREATING": "🚀 Creazione Stanza...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Sincronizzazione Episodio Fallita",
+  "NOTIF_LOBBY_CANCEL_MSG": "Auto-sync annullato: {reason}. Potrebbe essere necessaria una sincronizzazione manuale.",
+  "LOBBY_CANCEL_TIMEOUT": "Timeout",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Timeout (ripristinato)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Tutti gli altri partecipanti hanno lasciato la stanza",
+  "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Timeout — non tutti i partecipanti hanno caricato l'episodio",
+  "LOBBY_CANCEL_USER": "Annullato dall'utente",
+  "NOTIF_ERROR_TITLE": "Errore KoalaSync",
+  "FOOTER_SUPPORT": "☕ Offrimi un caffè",
+  "FOOTER_REVIEW": "★ Valuta",
+  "FOOTER_SUPPORT_PROMPT": "Ti piace KoalaSync? Lascia una recensione!",
+  "LABEL_AUDIO_PROCESSING": "Elaborazione audio",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Applica effetti audio come la compressione alla riproduzione video",
+  "AUDIO_OPEN_SETTINGS": "Apri",
+  "NEW_FEATURE_AUDIO": "Novità: Elaborazione audio — prova il compressore!",
+  "AUDIO_BACK": "← Indietro",
+  "AUDIO_PAGE_TITLE": "Impostazioni audio",
+  "AUDIO_MASTER_TOGGLE": "Elaborazione audio",
+  "AUDIO_COMPRESSOR": "Compressore",
+  "AUDIO_COMPRESSOR_ENABLE": "Attivato",
+  "AUDIO_PRESET": "Preimpostazione",
+  "AUDIO_PRESET_RECOMMENDED": "Consigliato",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Gamma dinamica",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Miglioramento vocale",
+  "AUDIO_PRESET_SMOOTH": "Morbido",
+  "AUDIO_PRESET_CUSTOM": "Personalizzato",
+  "AUDIO_PARAM_THRESHOLD": "Soglia",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Equalizzatore",
+  "AUDIO_COMING_SOON": "Prossimamente"
+}

extension/locales/ja.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "ja",
+  "HTML_CLASS": "lang-ja",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "ルーム",
+  "TAB_ROOM_TOOLTIP": "ルーム設定と接続",
+  "TAB_SYNC": "同期",
+  "TAB_SYNC_TOOLTIP": "ビデオ同期コントロールとリモートアクション",
+  "TAB_SETTINGS": "設定",
+  "TAB_SETTINGS_TOOLTIP": "拡張機能の設定",
+  "TAB_STATUS": "ステータス",
+  "TAB_STATUS_TOOLTIP": "高度な診断とログ",
+  "BTN_CREATE_ROOM": "+ 新規ルーム作成",
+  "MANUAL_CONNECT_HEADER": "手動接続 / 詳細設定",
+  "LABEL_SERVER": "サーバー",
+  "BTN_SERVER_OFFICIAL": "公式",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "公式の信頼できるサーバーを使用",
+  "BTN_SERVER_CUSTOM": "カスタム",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "独自のセルフホストサーバーに接続",
+  "PLACEHOLDER_SERVER_URL": "wss://your-server:3000",
+  "LABEL_ROOM_ID": "ルームID",
+  "LABEL_ROOM_ID_TOOLTIP": "同期ルームの固有の識別子",
+  "PLACEHOLDER_ROOM_ID": "ルームIDを入力",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "参加したいルームの固有のID",
+  "LABEL_PASSWORD": "パスワード（任意）",
+  "LABEL_PASSWORD_TOOLTIP": "ルームへのアクセスを制限するための任意のパスワード",
+  "PLACEHOLDER_PASSWORD": "ルームのパスワード（任意）",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "ルームのパスワード（ない場合は空欄）",
+  "BTN_JOIN_ROOM": "ルームに参加 / 作成",
+  "BTN_JOIN_ROOM_TOOLTIP": "ルームに接続",
+  "LABEL_PUBLIC_ROOMS": "公開ルーム",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "このサーバー上の公開ルーム의リスト",
+  "BTN_REFRESH": "更新",
+  "BTN_REFRESH_TOOLTIP": "公開ルームのリストを更新",
+  "PUBLIC_ROOMS_REFRESHING": "更新中...",
+  "BTN_REFRESH_COOLDOWN": "{seconds}秒待機",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "ルームリスト更新のクールダウン中。{seconds}秒後に再試行してください。",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "公開ルームを更新中。次の更新まであと{seconds}秒。",
+  "LABEL_ACTIVE_ROOM": "アクティブなルーム",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "現在接続しているルーム",
+  "ACTIVE_ROOM_NONE": "なし",
+  "ACTIVE_SERVER_OFFICIAL": "公式サーバー",
+  "LABEL_INVITE_LINK": "招待リンク",
+  "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",
+  "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",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "同期するビデオが含まれるブラウザのタブを選択してください",
+  "OPTION_SELECT_TAB": "-- タブを選択してください --",
+  "LABEL_REMOTE_CONTROL": "リモートコントロール",
+  "BTN_COPY_INVITE": "📋 招待リンク",
+  "BTN_COPY_INVITE_TOOLTIP": "招待リンクをコピー",
+  "BTN_PLAY": "▶ 再生",
+  "BTN_PLAY_TOOLTIP": "全員に再生コマンドを送信",
+  "BTN_PAUSE": "⏸ 一時停止",
+  "BTN_PAUSE_TOOLTIP": "全員に一時停止コマンドを送信",
+  "BTN_SYNC": "⚡ 同期",
+  "BTN_SYNC_TOOLTIP": "すべてのユーザーを強制的に同期",
+  "OPTION_JUMP_TO_OTHERS": "他の人に合わせる",
+  "OPTION_JUMP_TO_ME": "自分に合わせる",
+  "OPTION_JUMP_MODE_TOOLTIP": "同期対象を選択",
+  "LABEL_LAST_ACTIVITY": "最新のアクティビティ状況",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "最新の再生、一時停止、またはシークコマンドを表示します",
+  "NO_RECENT_COMMANDS": "最近のコマンドはありません",
+  "LOBBY_HEADER": "エピソードロビー",
+  "LOBBY_WAITING_FOR": "🎬 待機中: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "メンバーを待機中...",
+  "BTN_SKIP_PLAY": "スキップして再生",
+  "BTN_SKIP_PLAY_TOOLTIP": "ロビーをキャンセルして再生します",
+  "LOBBY_CONNECT_FIRST": "最初にルームに接続してください",
+  "LOBBY_CONNECT_FIRST_DESC": "ビデオを同期するには、招待リンクからルームに参加するか、新規に作成する必要があります。",
+  "BTN_CREATE_ROOM_ALT": "新規ルーム作成",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "ランダムな新規ルームを作成して参加",
+  "LABEL_USERNAME": "ユーザー名",
+  "LABEL_USERNAME_TOOLTIP": "ユーザー名は他のメンバーがあなたを識別するのに役立ちます。",
+  "PLACEHOLDER_USERNAME": "匿名コアラ",
+  "LABEL_HIDE_CLUTTER": "不要なタブを非表示",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "リストをすっきりさせるため、ビデオのないタブや無関係なドメインをフィルタリングします",
+  "LABEL_AUTO_SYNC_NEXT": "次のエピソードを自動同期",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "エピソード変更時に自動的に一時停止して全員を待ち、準備ができたら同時に再生を開始します。",
+  "LABEL_AUTO_COPY_INVITE": "招待リンク自動コピー",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "新規ルーム作成時に招待リンクをクリップボードに自動コピーします。",
+  "LABEL_NOTIFICATIONS": "ブラウザ通知",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "誰かが参加/退室したとき、または再生/一時停止したときにシステムの通知を表示します。",
+  "LABEL_LANGUAGE": "アプリの言語",
+  "LABEL_LANGUAGE_TOOLTIP": "拡張機能の優先言語を選択してください",
+  "LABEL_TROUBLESHOOTING": "トラブルシューティング",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "接続の問題を修正するためのツール",
+  "BTN_REGEN_ID": "ピアIDの再生成",
+  "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",
+  "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",
+  "BTN_RETRY": "再試行",
+  "BTN_RETRY_TOOLTIP": "サーバーへの再接続を試行",
+  "BTN_COPY_LOGS": "ログをコピー",
+  "BTN_COPY_LOGS_TOOLTIP": "共有用にログをクリップボードにコピー",
+  "LABEL_VIDEO_DEBUG": "ビデオデバッグ情報",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "現在選択されているビデオ要素に関する技術的詳細",
+  "VIDEO_DEBUG_EMPTY": "タブが選択されていないか、ビデオが検出されませんでした。",
+  "LABEL_HISTORY": "全アクション履歴",
+  "LABEL_HISTORY_TOOLTIP": "ルーム内のすべての同期コマンドの時系列ログ",
+  "HISTORY_EMPTY": "アクティビティはまだありません",
+  "LABEL_LOGS": "ログ（直近50件）",
+  "LABEL_LOGS_TOOLTIP": "デバッグ用の技術接続ログ",
+  "BTN_CLEAR": "消去",
+  "BTN_CLEAR_TOOLTIP": "ログ出力をクリア",
+  "LABEL_GITHUB": "GitHubリポジトリ",
+  "BTN_ONBOARDING_SKIP": "スキップ",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "チュートリアルをスキップ",
+  "BTN_ONBOARDING_NEXT": "次へ",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "次のステップに進む",
+  "ONBOARDING_1_TITLE": "KoalaSyncへようこそ！",
+  "ONBOARDING_1_TEXT": "どこにいても、完璧に同期してビデオを一緒に楽しめます。簡単なツアーを始めましょう！",
+  "ONBOARDING_2_TITLE": "1. ルームの作成",
+  "ONBOARDING_2_TEXT": "ここからスタート。ルームを作成し、招待リンクを友達に共有します。",
+  "ONBOARDING_3_TITLE": "2. ビデオの選択",
+  "ONBOARDING_3_TEXT": "ここで同期したいビデオを選択します。再生、一時停止、シーク操作は全員に同期されます。",
+  "ONBOARDING_4_TITLE": "3. カスタマイズ",
+  "ONBOARDING_4_TEXT": "友達にわかりやすいように、楽しいユーザー名を設定しましょう。",
+  "ONBOARDING_5_TITLE": "準備が整いました！",
+  "ONBOARDING_5_TEXT": "ポップコーンを用意しましょう。一緒に鑑賞を楽しんでください！",
+  "ERR_CONN_TIMEOUT": "接続がタイムアウトしました。再試行してください。",
+  "ERR_INVALID_SERVER_URL": "サーバーURLの形式が無効です。",
+  "ERR_IDENTITY_NOT_LOADED": "IDがまだロードされていません。しばらく待ってから再試行してください。",
+  "ERR_NO_PEERS_TIME": "既知の時間を持つ他のメンバーがいません。「自分に合わせる」に切り替えてください。",
+  "ERR_NO_VIDEO_TAB": "ビデオタブに接続できませんでした。",
+  "ERR_SELECT_VIDEO": "最初にビデオを選択してください！",
+  "TOAST_INVITE_COPIED": "招待リンクをコピーしました！",
+  "TOAST_COPY_FAILED": "クリップボードへのコピーに失敗しました",
+  "TOAST_LOBBY_SKIPPED": "エピソードロビーをスキップしました。",
+  "TOAST_LOBBY_SKIP_FAILED": "ロビーのスキップに失敗しました。",
+  "TOAST_LOGS_COPIED": "コピーしました！",
+  "TOAST_PEER_JOINED": "{name}が参加しました",
+  "TOAST_PEER_LEFT": "{name}が退室しました",
+  "TOAST_PEER_ACTION": "{name}が{action}",
+  "STATUS_CONNECTED": "接続完了",
+  "STATUS_RECONNECTING": "再接続中...",
+  "STATUS_CONNECTING": "接続中...",
+  "STATUS_FAILED": "失敗",
+  "STATUS_DISCONNECTED": "切断されました",
+  "BTN_STATE_JOINING": "🚀 参加中...",
+  "BTN_STATE_RECONNECTING": "🔄 再接続中...",
+  "BTN_STATE_PLAYING": "▶ 再生中...",
+  "BTN_STATE_PAUSING": "⏸ 一時停止中...",
+  "BTN_STATE_SYNCING_GROUP": "グループに同期中 ({time})...",
+  "BTN_STATE_SYNCING": "同期中...",
+  "BTN_STATE_SYNCED": "✅ 同期完了！",
+  "NOTIF_PLAY": "再生を開始しました",
+  "NOTIF_PAUSE": "再生を一時停止しました",
+  "NOTIF_SEEK": "動画をシークしました",
+  "NOTIF_FORCE_PREPARE": "強制同期を開始しました",
+  "NOTIF_FORCE_EXECUTE": "全員を同期しました",
+  "DEBUG_NO_TAB": "対象のタブが選択されていません。",
+  "DEBUG_COMM_FAIL": "タブのビデオと通信できませんでした。",
+  "EMPTY_PEERS_TITLE": "メンバーはまだいません",
+  "EMPTY_PEERS_HINT": "招待リンクを共有して始めましょう",
+  "EMPTY_HISTORY_TITLE": "アクティビティはまだありません",
+  "EMPTY_HISTORY_HINT": "履歴を表示するには再生、一時停止、またはシークを行います",
+  "EMPTY_LOGS_TITLE": "ログはありません",
+  "EMPTY_LOGS_HINT": "接続イベントがここに表示されます",
+  "EMPTY_ROOMS_TITLE": "アクティブなルームはありません",
+  "EMPTY_ROOMS_HINT": "ルームを作成するか、更新して公開ルームを探します",
+  "LABEL_YOU": "あなた",
+  "ONBOARDING_DONE": "完了！",
+  "LABEL_LOBBY_PEER_READY": "準備完了",
+  "LABEL_LOBBY_PEER_LOADING": "読み込み中...",
+  "LABEL_PASSWORD_PROTECTED": "パスワード保護",
+  "LABEL_PEERS_COUNT": "{count}人",
+  "LABEL_CUSTOM_SERVER": "カスタムサーバー",
+  "BTN_STATE_CREATING": "🚀 ルーム作成中...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — エピソード同期に失敗しました",
+  "NOTIF_LOBBY_CANCEL_MSG": "自動同期がキャンセルされました: {reason}。手動で同期する必要がある場合があります。",
+  "LOBBY_CANCEL_TIMEOUT": "タイムアウト",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "タイムアウト（回復済）",
+  "LOBBY_CANCEL_PEERS_LEFT": "他のすべてのメンバーが退室しました",
+  "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_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",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "動画再生に圧縮などのオーディオエフェクトを適用します",
+  "AUDIO_OPEN_SETTINGS": "開く",
+  "NEW_FEATURE_AUDIO": "新機能: オーディオ処理 — コンプレッサーを試してみよう！",
+  "AUDIO_BACK": "← 戻る",
+  "AUDIO_PAGE_TITLE": "オーディオ設定",
+  "AUDIO_MASTER_TOGGLE": "オーディオ処理",
+  "AUDIO_COMPRESSOR": "コンプレッサー",
+  "AUDIO_COMPRESSOR_ENABLE": "有効",
+  "AUDIO_PRESET": "プリセット",
+  "AUDIO_PRESET_RECOMMENDED": "推奨",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "ダイナミックレンジ",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "ボーカル強調",
+  "AUDIO_PRESET_SMOOTH": "スムース",
+  "AUDIO_PRESET_CUSTOM": "カスタム",
+  "AUDIO_PARAM_THRESHOLD": "スレッショルド",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "イコライザー",
+  "AUDIO_COMING_SOON": "近日公開"
+}

extension/locales/ko.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "ko",
+  "HTML_CLASS": "lang-ko",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "방",
+  "TAB_ROOM_TOOLTIP": "방 설정 및 연결",
+  "TAB_SYNC": "동기화",
+  "TAB_SYNC_TOOLTIP": "비디오 동기화 제어 및 원격 작업",
+  "TAB_SETTINGS": "설정",
+  "TAB_SETTINGS_TOOLTIP": "확장 프로그램 기본 설정",
+  "TAB_STATUS": "상태",
+  "TAB_STATUS_TOOLTIP": "고급 진단 및 로그",
+  "BTN_CREATE_ROOM": "+ 새 방 만들기",
+  "MANUAL_CONNECT_HEADER": "수동 연결 / 고급",
+  "LABEL_SERVER": "서버",
+  "BTN_SERVER_OFFICIAL": "공식",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "공식적이고 신뢰할 수 있는 서버 사용",
+  "BTN_SERVER_CUSTOM": "사용자 정의",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "자체 호스팅 서버에 연결",
+  "PLACEHOLDER_SERVER_URL": "wss://your-server:3000",
+  "LABEL_ROOM_ID": "방 ID",
+  "LABEL_ROOM_ID_TOOLTIP": "동기화 방의 고유 식별자",
+  "PLACEHOLDER_ROOM_ID": "방 ID 입력",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "참여하려는 방의 고유 ID",
+  "LABEL_PASSWORD": "비밀번호 (선택사항)",
+  "LABEL_PASSWORD_TOOLTIP": "방 액세스를 제한하기 위한 선택적 비밀번호",
+  "PLACEHOLDER_PASSWORD": "방 비밀번호 (선택사항)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "방 비밀번호 (없으면 비워둠)",
+  "BTN_JOIN_ROOM": "방 참여 / 만들기",
+  "BTN_JOIN_ROOM_TOOLTIP": "방에 연결",
+  "LABEL_PUBLIC_ROOMS": "공개 방",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "이 서버의 공개 방 목록",
+  "BTN_REFRESH": "Refreschi",
+  "BTN_REFRESH_TOOLTIP": "공개 방 목록 새로고침",
+  "PUBLIC_ROOMS_REFRESHING": "새로고침 중...",
+  "BTN_REFRESH_COOLDOWN": "{seconds}초 대기",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "방 목록 새로고침 대기 중입니다. {seconds}초 후에 다시 시도하세요.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "공개 방 새로고침 중. {seconds}초 후 새로고침 가능.",
+  "LABEL_ACTIVE_ROOM": "활성 방",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "현재 연결된 방",
+  "ACTIVE_ROOM_NONE": "없음",
+  "ACTIVE_SERVER_OFFICIAL": "공식 서버",
+  "LABEL_INVITE_LINK": "초대 링크",
+  "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",
+  "NO_PEERS_CONNECTED": "연결된 참여자가 없습니다",
+  "BTN_LEAVE_ROOM": "방 나가기",
+  "LABEL_SELECT_VIDEO": "비디오 선택",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "동기화할 비디오가 포함된 브라우저 탭을 선택하세요",
+  "OPTION_SELECT_TAB": "-- 탭 선택 --",
+  "LABEL_REMOTE_CONTROL": "원격 제어",
+  "BTN_COPY_INVITE": "📋 초대 링크",
+  "BTN_COPY_INVITE_TOOLTIP": "초대 링크 복사",
+  "BTN_PLAY": "▶ 재생",
+  "BTN_PLAY_TOOLTIP": "모든 사람에게 재생 명령 전송",
+  "BTN_PAUSE": "⏸ 일시정지",
+  "BTN_PAUSE_TOOLTIP": "모든 사람에게 일시정지 명령 전송",
+  "BTN_SYNC": "⚡ 동기화",
+  "BTN_SYNC_TOOLTIP": "모든 사용자의 강제 동기화",
+  "OPTION_JUMP_TO_OTHERS": "다른 사람에게 이동",
+  "OPTION_JUMP_TO_ME": "나에게 이동",
+  "OPTION_JUMP_MODE_TOOLTIP": "동기화 대상 선택",
+  "LABEL_LAST_ACTIVITY": "최근 활동 상태",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "가장 최근의 재생, 일시정지, 탐색 명령을 표시합니다",
+  "NO_RECENT_COMMANDS": "최근 명령 없음",
+  "LOBBY_HEADER": "에피소드 로비",
+  "LOBBY_WAITING_FOR": "🎬 대기 중: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "참여자 대기 중...",
+  "BTN_SKIP_PLAY": "건너뛰고 재생",
+  "BTN_SKIP_PLAY_TOOLTIP": "로비를 취소하고 재생합니다",
+  "LOBBY_CONNECT_FIRST": "먼저 방에 연결하세요",
+  "LOBBY_CONNECT_FIRST_DESC": "비디오를 동기화하려면 초대 링크를 통해 방에 참여하거나 새 방을 만들어야 합니다.",
+  "BTN_CREATE_ROOM_ALT": "새 방 만들기",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "새로운 무작위 방을 만들고 참여",
+  "LABEL_USERNAME": "사용자 이름",
+  "LABEL_USERNAME_TOOLTIP": "사용자 이름은 다른 사람들이 귀하를 식별하는 데 도움이 됩니다.",
+  "PLACEHOLDER_USERNAME": "익명의 코알라",
+  "LABEL_HIDE_CLUTTER": "복잡한 탭 숨기기",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "목록을 깔끔하게 유지하기 위해 비디오가 없는 탭과 관련 없는 도메인을 필터링합니다",
+  "LABEL_AUTO_SYNC_NEXT": "다음 에피소드 자동 동기화",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "에피소드가 변경되면 자동으로 일시정지하고 모든 참여자를 기다린 후 함께 동기화하여 시작합니다.",
+  "LABEL_AUTO_COPY_INVITE": "초대 링크 자동 복사",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "새 방을 만들 때 초대 링크를 클립보드에 자동으로 복사합니다.",
+  "LABEL_NOTIFICATIONS": "브라우저 알림",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "누군가 참여/퇴장하거나 재생/일시정지할 때 시스템 알림을 표시합니다.",
+  "LABEL_LANGUAGE": "앱 언어",
+  "LABEL_LANGUAGE_TOOLTIP": "선호하는 확장 프로그램 언어를 선택하세요",
+  "LABEL_TROUBLESHOOTING": "문제 해결",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "연결 문제 해결을 위한 도구",
+  "BTN_REGEN_ID": "피어 ID 재생성",
+  "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",
+  "LABEL_CONN_STATUS": "연결 상태",
+  "LABEL_CONN_STATUS_TOOLTIP": "현재 WebSocket 연결 상태",
+  "CONN_STATUS_DISCONNECTED": "연결 끊김",
+  "BTN_RETRY": "재시도",
+  "BTN_RETRY_TOOLTIP": "서버에 재연결 시도",
+  "BTN_COPY_LOGS": "로그 복사",
+  "BTN_COPY_LOGS_TOOLTIP": "공유를 위해 로그를 클립보드에 복사",
+  "LABEL_VIDEO_DEBUG": "비디오 디버그 정보",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "현재 선택된 비디오 요소에 대한 기술적 세부 정보",
+  "VIDEO_DEBUG_EMPTY": "선택된 탭이 없거나 비디오가 감지되지 않았습니다.",
+  "LABEL_HISTORY": "전체 작업 내역",
+  "LABEL_HISTORY_TOOLTIP": "방 내 모든 동기화 명령의 시간순 로그",
+  "HISTORY_EMPTY": "활동 없음",
+  "LABEL_LOGS": "로그 (최근 50개)",
+  "LABEL_LOGS_TOOLTIP": "디버깅용 기술 연결 로그",
+  "BTN_CLEAR": "지우기",
+  "BTN_CLEAR_TOOLTIP": "로그 출력 지우기",
+  "LABEL_GITHUB": "GitHub 저장소",
+  "BTN_ONBOARDING_SKIP": "건너뛰기",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "튜토리얼 건너뛰기",
+  "BTN_ONBOARDING_NEXT": "다음",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "다음 단계로 이동",
+  "ONBOARDING_1_TITLE": "KoalaSync에 오신 것을 환영합니다!",
+  "ONBOARDING_1_TEXT": "어디에 있든 완벽하게 동기화된 비디오를 함께 시청하세요. 간단히 둘러볼까요!",
+  "ONBOARDING_2_TITLE": "1. 방 만들기",
+  "ONBOARDING_2_TEXT": "여기서 시작하세요. 방을 만들고 친구들에게 초대 링크를 공유하세요.",
+  "ONBOARDING_3_TITLE": "2. 비디오 선택",
+  "ONBOARDING_3_TEXT": "동기화할 비디오를 선택하려면 여기로 이동하세요. 재생, 일시정지, 탐색이 모든 참여자에게 동기화됩니다.",
+  "ONBOARDING_4_TITLE": "3. 개인화",
+  "ONBOARDING_4_TEXT": "친구들이 나를 알아볼 수 있도록 재미있는 사용자 이름을 골라보세요.",
+  "ONBOARDING_5_TITLE": "모든 준비가 끝났습니다!",
+  "ONBOARDING_5_TEXT": "팝콘을 준비할 시간입니다. 함께 즐겁게 시청하세요!",
+  "ERR_CONN_TIMEOUT": "연결 시간이 초과되었습니다. 다시 시도해 주세요.",
+  "ERR_INVALID_SERVER_URL": "올바르지 않은 서버 URL 형식입니다.",
+  "ERR_IDENTITY_NOT_LOADED": "ID가 아직 로드되지 않았습니다. 잠시 후 다시 시도해 주세요.",
+  "ERR_NO_PEERS_TIME": "시간을 알고 있는 다른 피어가 없습니다. '나에게 이동'으로 전환하세요.",
+  "ERR_NO_VIDEO_TAB": "비디오 탭에 연결할 수 없습니다.",
+  "ERR_SELECT_VIDEO": "먼저 비디오를 선택하세요!",
+  "TOAST_INVITE_COPIED": "초대 링크가 복사되었습니다!",
+  "TOAST_COPY_FAILED": "클립보드 복사에 실패했습니다",
+  "TOAST_LOBBY_SKIPPED": "에피소드 로비를 건너뛰었습니다.",
+  "TOAST_LOBBY_SKIP_FAILED": "로비 건너뛰기에 실패했습니다.",
+  "TOAST_LOGS_COPIED": "복사됨!",
+  "TOAST_PEER_JOINED": "{name} 님이 방에 참여했습니다",
+  "TOAST_PEER_LEFT": "{name} 님이 방에서 나갔습니다",
+  "TOAST_PEER_ACTION": "{name} 님이 {action}",
+  "STATUS_CONNECTED": "연결됨",
+  "STATUS_RECONNECTING": "재연결 중...",
+  "STATUS_CONNECTING": "연kel 중...",
+  "STATUS_FAILED": "실패",
+  "STATUS_DISCONNECTED": "연결 끊김",
+  "BTN_STATE_JOINING": "🚀 참여 중...",
+  "BTN_STATE_RECONNECTING": "🔄 재연결 중...",
+  "BTN_STATE_PLAYING": "▶ 재생 중...",
+  "BTN_STATE_PAUSING": "⏸ 일시정지 중...",
+  "BTN_STATE_SYNCING_GROUP": "그룹에 동기화 중 ({time})...",
+  "BTN_STATE_SYNCING": "동기화 중...",
+  "BTN_STATE_SYNCED": "✅ 동기화됨!",
+  "NOTIF_PLAY": "재생을 시작했습니다",
+  "NOTIF_PAUSE": "재생을 일시정지했습니다",
+  "NOTIF_SEEK": "비디오를 탐색했습니다",
+  "NOTIF_FORCE_PREPARE": "강제 동기화를 시작했습니다",
+  "NOTIF_FORCE_EXECUTE": "모든 사용자를 동기화했습니다",
+  "DEBUG_NO_TAB": "대상 탭이 선택되지 않았습니다.",
+  "DEBUG_COMM_FAIL": "탭 비디오와 통신할 수 없습니다.",
+  "EMPTY_PEERS_TITLE": "참여자 없음",
+  "EMPTY_PEERS_HINT": "시작하려면 초대 링크를 공유하세요",
+  "EMPTY_HISTORY_TITLE": "활동 없음",
+  "EMPTY_HISTORY_HINT": "기록을 보려면 재생, 일시정지 또는 탐색을 해보세요",
+  "EMPTY_LOGS_TITLE": "로그 없음",
+  "EMPTY_LOGS_HINT": "연결 이벤트가 여기에 표시됩니다",
+  "EMPTY_ROOMS_TITLE": "활성 방 없음",
+  "EMPTY_ROOMS_HINT": "방을 만들거나 새로고침하여 공개 방을 찾으세요",
+  "LABEL_YOU": "나",
+  "ONBOARDING_DONE": "완료!",
+  "LABEL_LOBBY_PEER_READY": "준비",
+  "LABEL_LOBBY_PEER_LOADING": "로딩 중...",
+  "LABEL_PASSWORD_PROTECTED": "비밀번호 보호됨",
+  "LABEL_PEERS_COUNT": "{count}명",
+  "LABEL_CUSTOM_SERVER": "사용자 정의 서버",
+  "BTN_STATE_CREATING": "🚀 방 만드는 중...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — 에피소드 동기화 실패",
+  "NOTIF_LOBBY_CANCEL_MSG": "자동 동기화 취소됨: {reason}. 수동 동기화가 필요할 수 있습니다.",
+  "LOBBY_CANCEL_TIMEOUT": "시간 초과",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "시간 초과 (복구됨)",
+  "LOBBY_CANCEL_PEERS_LEFT": "다른 모든 피어가 나갔습니다",
+  "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_REVIEW": "★ 평가하기",
+  "FOOTER_SUPPORT_PROMPT": "KoalaSync가 마음에 드세요? 리뷰를 남겨주세요!",
+  "LABEL_AUDIO_PROCESSING": "오디오 처리",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "비디오 재생에 압축과 같은 오디오 효과를 적용합니다",
+  "AUDIO_OPEN_SETTINGS": "열기",
+  "NEW_FEATURE_AUDIO": "신규: 오디오 처리 — 컴프레서를 사용해보세요!",
+  "AUDIO_BACK": "← 뒤로",
+  "AUDIO_PAGE_TITLE": "오디오 설정",
+  "AUDIO_MASTER_TOGGLE": "오디오 처리",
+  "AUDIO_COMPRESSOR": "컴프레서",
+  "AUDIO_COMPRESSOR_ENABLE": "활성화",
+  "AUDIO_PRESET": "프리셋",
+  "AUDIO_PRESET_RECOMMENDED": "추천",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "다이내믹 레인지",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "음성 강화",
+  "AUDIO_PRESET_SMOOTH": "부드럽게",
+  "AUDIO_PRESET_CUSTOM": "사용자 정의",
+  "AUDIO_PARAM_THRESHOLD": "임계값",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "이퀄라이저",
+  "AUDIO_COMING_SOON": "출시 예정"
+}

extension/locales/nl.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "nl",
+  "HTML_CLASS": "lang-nl",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Kamer",
+  "TAB_ROOM_TOOLTIP": "Kamerinstellingen en verbinding",
+  "TAB_SYNC": "Sync",
+  "TAB_SYNC_TOOLTIP": "Videobeheer en externe acties",
+  "TAB_SETTINGS": "Instellingen",
+  "TAB_SETTINGS_TOOLTIP": "Extensievoorkeuren",
+  "TAB_STATUS": "Status",
+  "TAB_STATUS_TOOLTIP": "Geavanceerde diagnostische gegevens & logs",
+  "BTN_CREATE_ROOM": "+ Nieuwe kamer maken",
+  "MANUAL_CONNECT_HEADER": "Handmatig verbinden / Geavanceerd",
+  "LABEL_SERVER": "Server",
+  "BTN_SERVER_OFFICIAL": "Officieel",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Gebruik de officiële betrouwbare server",
+  "BTN_SERVER_CUSTOM": "Aangepast",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Verbind met uw eigen gehoste server",
+  "PLACEHOLDER_SERVER_URL": "wss://uw-server:3000",
+  "LABEL_ROOM_ID": "Kamer-ID",
+  "LABEL_ROOM_ID_TOOLTIP": "De unieke identificatie voor uw synchronisatiekamer",
+  "PLACEHOLDER_ROOM_ID": "Voer kamer-ID in",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "Het unieke ID van de kamer waar u aan wilt deelnemen",
+  "LABEL_PASSWORD": "Wachtwoord (optioneel)",
+  "LABEL_PASSWORD_TOOLTIP": "Optioneel wachtwoord om toegang tot de kamer te beperken",
+  "PLACEHOLDER_PASSWORD": "Kamerwachtwoord (optioneel)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Wachtwoord voor de kamer (leeg laten indien geen)",
+  "BTN_JOIN_ROOM": "Deelnemen / Kamer maken",
+  "BTN_JOIN_ROOM_TOOLTIP": "Verbinden met de kamer",
+  "LABEL_PUBLIC_ROOMS": "Openbare kamers",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Lijst met openbaar beschikbare kamers op deze server",
+  "BTN_REFRESH": "VERNIEUWEN",
+  "BTN_REFRESH_TOOLTIP": "Vernieuw de lijst met openbare kamers",
+  "PUBLIC_ROOMS_REFRESHING": "Vernieuwen...",
+  "BTN_REFRESH_COOLDOWN": "WACHT {seconds}s",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "Vernieuwen van kamerlijst is aan het afkoelen. Probeer opnieuw in {seconds}s.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Openbare kamers vernieuwen. Volgende verversing beschikbaar in {seconds}s.",
+  "LABEL_ACTIVE_ROOM": "Actieve kamer",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "De kamer waar u momenteel mee bent verbonden",
+  "ACTIVE_ROOM_NONE": "GEEN",
+  "ACTIVE_SERVER_OFFICIAL": "Officiële server",
+  "LABEL_INVITE_LINK": "Uitnodigingslink",
+  "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",
+  "NO_PEERS_CONNECTED": "Geen deelnemers verbonden",
+  "BTN_LEAVE_ROOM": "Kamer verlaten",
+  "LABEL_SELECT_VIDEO": "Selecteer video",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Kies het browsertabblad met de video die u wilt synchroniseren",
+  "OPTION_SELECT_TAB": "-- Selecteer een tabblad --",
+  "LABEL_REMOTE_CONTROL": "Afstandsbediening",
+  "BTN_COPY_INVITE": "📋 Uitnodigingslink",
+  "BTN_COPY_INVITE_TOOLTIP": "Uitnodigingslink kopiëren",
+  "BTN_PLAY": "▶ Afspelen",
+  "BTN_PLAY_TOOLTIP": "Stuur een afspeelopdracht naar iedereen",
+  "BTN_PAUSE": "⏸ Pauzeren",
+  "BTN_PAUSE_TOOLTIP": "Stuur een pauzeeropdracht naar iedereen",
+  "BTN_SYNC": "⚡ SYNC",
+  "BTN_SYNC_TOOLTIP": "Dwing alle gebruikers om te synchroniseren",
+  "OPTION_JUMP_TO_OTHERS": "Spring naar anderen",
+  "OPTION_JUMP_TO_ME": "Spring naar mij",
+  "OPTION_JUMP_MODE_TOOLTIP": "Kies synchronisatiedoel",
+  "LABEL_LAST_ACTIVITY": "Laatste activiteitsstatus",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Toont de meest recente afspeel-, pauzeer- of zoekopdracht",
+  "NO_RECENT_COMMANDS": "Geen recente commando's",
+  "LOBBY_HEADER": "EPISODE LOBBY",
+  "LOBBY_WAITING_FOR": "🎬 Wachten op: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "Wachten op deelnemers...",
+  "BTN_SKIP_PLAY": "Overslaan & toch afspelen",
+  "BTN_SKIP_PLAY_TOOLTIP": "Lobby annuleren en toch afspelen",
+  "LOBBY_CONNECT_FIRST": "Verbind eerst met een kamer",
+  "LOBBY_CONNECT_FIRST_DESC": "U moet deelnemen aan een kamer via een uitnodigingslink of een nieuwe maken om video's te synchroniseren.",
+  "BTN_CREATE_ROOM_ALT": "Nieuwe kamer maken",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Maak een nieuwe willekeurige kamer en neem deel",
+  "LABEL_USERNAME": "Uw gebruikersnaam",
+  "LABEL_USERNAME_TOOLTIP": "Gebruikersnaam helpt anderen u te identificeren.",
+  "PLACEHOLDER_USERNAME": "Anonieme Koala",
+  "LABEL_HIDE_CLUTTER": "Overbodige tabbladen verbergen",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Filtert tabbladen zonder video's en niet-gerelateerde domeinen om de lijst schoon te houden",
+  "LABEL_AUTO_SYNC_NEXT": "Volgende aflevering automatisch syncen",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Pauzeert automatisch en wacht op alle deelnemers wanneer een aflevering verandert, en start dan gezamenlijk gesynchroniseerd.",
+  "LABEL_AUTO_COPY_INVITE": "Uitnodigingslink automatisch kopiëren",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Kopieert de uitnodigingslink automatisch naar uw klembord bij het maken van een nieuwe kamer.",
+  "LABEL_NOTIFICATIONS": "Browsernotificaties",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Toont systeemnotificaties wanneer iemand deelneemt/verlaat of afspeelt/pauzeert.",
+  "LABEL_LANGUAGE": "Taal app",
+  "LABEL_LANGUAGE_TOOLTIP": "Kies uw favoriete taal voor de extensie",
+  "LABEL_TROUBLESHOOTING": "Problemen oplossen",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Hulpmiddelen voor het oplossen van verbindingsproblemen",
+  "BTN_REGEN_ID": "Peer-ID opnieuw genereren",
+  "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",
+  "LABEL_CONN_STATUS": "Verbindingsstatus",
+  "LABEL_CONN_STATUS_TOOLTIP": "Huidige WebSocket-verbindingsstatus",
+  "CONN_STATUS_DISCONNECTED": "Verbinding verbroken",
+  "BTN_RETRY": "OPNIEUW PROBEREN",
+  "BTN_RETRY_TOOLTIP": "Proberen opnieuw verbinding te maken met de server",
+  "BTN_COPY_LOGS": "Logs kopiëren",
+  "BTN_COPY_LOGS_TOOLTIP": "Kopieer logboeken naar het klembord om te delen",
+  "LABEL_VIDEO_DEBUG": "Video-debuginfo",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Technische details over het momenteel geselecteerde video-element",
+  "VIDEO_DEBUG_EMPTY": "Geen tabblad geselecteerd of video gedetecteerd.",
+  "LABEL_HISTORY": "Volledige actiegeschiedenis",
+  "LABEL_HISTORY_TOOLTIP": "Chronologisch logboek van alle synchronisatieopdrachten in de kamer",
+  "HISTORY_EMPTY": "Nog geen activiteit",
+  "LABEL_LOGS": "Logs (Laatste 50)",
+  "LABEL_LOGS_TOOLTIP": "Technische verbindingslogboeken voor debuggen",
+  "BTN_CLEAR": "WISSEN",
+  "BTN_CLEAR_TOOLTIP": "Logboekuitvoer wissen",
+  "LABEL_GITHUB": "GitHub-repository",
+  "BTN_ONBOARDING_SKIP": "Overslaan",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Sla de tutorial over",
+  "BTN_ONBOARDING_NEXT": "Volgende",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Ga naar de volgende stap",
+  "ONBOARDING_1_TITLE": "Welkom bij KoalaSync!",
+  "ONBOARDING_1_TEXT": "Bekijk video's samen in perfecte synchronisatie — waar u ook bent. Laten we een snelle rondleiding nemen!",
+  "ONBOARDING_2_TITLE": "1. Kamer maken",
+  "ONBOARDING_2_TEXT": "Begin hier. Maak een kamer en deel de uitnodigingslink met uw vrienden.",
+  "ONBOARDING_3_TITLE": "2. Selecteer video",
+  "ONBOARDING_3_TEXT": "Navigeer hiernaartoe om de video te selecteren die u wilt synchroniseren. Spelen, pauzeren en zoeken — iedereen blijft synchroon.",
+  "ONBOARDING_4_TITLE": "3. Personaliseren",
+  "ONBOARDING_4_TEXT": "Kies een leuke gebruikersnaam zodat uw vrienden weten wie u bent.",
+  "ONBOARDING_5_TITLE": "U bent er helemaal klaar voor!",
+  "ONBOARDING_5_TEXT": "Tijd voor popcorn. Veel plezier met samen kijken!",
+  "ERR_CONN_TIMEOUT": "Verbinding time-out. Probeer het opnieuw.",
+  "ERR_INVALID_SERVER_URL": "Ongeldig server URL-formaat.",
+  "ERR_IDENTITY_NOT_LOADED": "Identiteit nog niet geladen. Wacht een moment en probeer het opnieuw.",
+  "ERR_NO_PEERS_TIME": "Geen andere deelnemers met een bekende tijd. Schakel over naar 'Spring naar mij'.",
+  "ERR_NO_VIDEO_TAB": "Kon geen verbinding maken met videotabblad.",
+  "ERR_SELECT_VIDEO": "Selecteer eerst een video!",
+  "TOAST_INVITE_COPIED": "Uitnodigingslink gekopieerd!",
+  "TOAST_COPY_FAILED": "Kopiëren naar klembord mislukt",
+  "TOAST_LOBBY_SKIPPED": "Episode Lobby overgeslagen.",
+  "TOAST_LOBBY_SKIP_FAILED": "Lobby overslaan mislukt.",
+  "TOAST_LOGS_COPIED": "Gekopieerd!",
+  "TOAST_PEER_JOINED": "{name} neemt deel aan de kamer",
+  "TOAST_PEER_LEFT": "{name} heeft de kamer verlaten",
+  "TOAST_PEER_ACTION": "{name} {action}",
+  "STATUS_CONNECTED": "Verbonden",
+  "STATUS_RECONNECTING": "Opnieuw verbinden...",
+  "STATUS_CONNECTING": "Verbinden...",
+  "STATUS_FAILED": "Mislukt",
+  "STATUS_DISCONNECTED": "Verbinding verbroken",
+  "BTN_STATE_JOINING": "🚀 Deelnemen...",
+  "BTN_STATE_RECONNECTING": "🔄 Opnieuw verbinden...",
+  "BTN_STATE_PLAYING": "▶ Afspelen...",
+  "BTN_STATE_PAUSING": "⏸ Pauzeren...",
+  "BTN_STATE_SYNCING_GROUP": "Synchroniseren met groep ({time})...",
+  "BTN_STATE_SYNCING": "Synchroniseren...",
+  "BTN_STATE_SYNCED": "✅ Gesynchroniseerd!",
+  "NOTIF_PLAY": "is begonnen met afspelen",
+  "NOTIF_PAUSE": "heeft afspelen gepauzeerd",
+  "NOTIF_SEEK": "heeft de video gespoeld",
+  "NOTIF_FORCE_PREPARE": "is een geforceerde sync gestart",
+  "NOTIF_FORCE_EXECUTE": "heeft iedereen gesynchroniseerd",
+  "DEBUG_NO_TAB": "Geen doeltabblad geselecteerd.",
+  "DEBUG_COMM_FAIL": "Kon niet cmmuniceren met de videotab.",
+  "EMPTY_PEERS_TITLE": "Nog geen deelnemers",
+  "EMPTY_PEERS_HINT": "Deel uw uitnodigingslink om te beginnen",
+  "EMPTY_HISTORY_TITLE": "Nog geen activiteit",
+  "EMPTY_HISTORY_HINT": "Speel af, pauzeer of spoel om geschiedenis te zien",
+  "EMPTY_LOGS_TITLE": "Geen logs",
+  "EMPTY_LOGS_HINT": "Verbindingsgebeurtenissen verschijnen hier",
+  "EMPTY_ROOMS_TITLE": "Geen actieve kamers",
+  "EMPTY_ROOMS_HINT": "Maak een kamer of vernieuw om openbare te vinden",
+  "LABEL_YOU": "Jij",
+  "ONBOARDING_DONE": "Klaar!",
+  "LABEL_LOBBY_PEER_READY": "Gereed",
+  "LABEL_LOBBY_PEER_LOADING": "Laden...",
+  "LABEL_PASSWORD_PROTECTED": "Wachtwoord beveiligd",
+  "LABEL_PEERS_COUNT": "{count} deelnemers",
+  "LABEL_CUSTOM_SERVER": "Aangepaste server",
+  "BTN_STATE_CREATING": "🚀 Kamer maken...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Episode Sync mislukt",
+  "NOTIF_LOBBY_CANCEL_MSG": "Auto-sync geannuleerd: {reason}. Mogelijk moet u handmatig synchroniseren.",
+  "LOBBY_CANCEL_TIMEOUT": "Time-out",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Time-out (hersteld)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Alle andere deelnemers zijn vertrokken",
+  "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_REVIEW": "★ Beoordelen",
+  "FOOTER_SUPPORT_PROMPT": "Vind je KoalaSync leuk? Laat een review achter!",
+  "LABEL_AUDIO_PROCESSING": "Audioverwerking",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Past audio-effecten zoals compressie toe op video-afspelen",
+  "AUDIO_OPEN_SETTINGS": "Openen",
+  "NEW_FEATURE_AUDIO": "Nieuw: Audioverwerking — probeer de compressor!",
+  "AUDIO_BACK": "← Terug",
+  "AUDIO_PAGE_TITLE": "Audio-instellingen",
+  "AUDIO_MASTER_TOGGLE": "Audioverwerking",
+  "AUDIO_COMPRESSOR": "Compressor",
+  "AUDIO_COMPRESSOR_ENABLE": "Ingeschakeld",
+  "AUDIO_PRESET": "Voorinstelling",
+  "AUDIO_PRESET_RECOMMENDED": "Aanbevolen",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Dynamisch bereik",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Stemverbetering",
+  "AUDIO_PRESET_SMOOTH": "Zacht",
+  "AUDIO_PRESET_CUSTOM": "Aangepast",
+  "AUDIO_PARAM_THRESHOLD": "Drempel",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Equalizer",
+  "AUDIO_COMING_SOON": "Binnenkort beschikbaar"
+}

extension/locales/pl.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "pl",
+  "HTML_CLASS": "lang-pl",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Pokój",
+  "TAB_ROOM_TOOLTIP": "Ustawienia pokoju i połączenie",
+  "TAB_SYNC": "Sync",
+  "TAB_SYNC_TOOLTIP": "Sterowanie synchronizacją wideo i zdalne akcje",
+  "TAB_SETTINGS": "Ustawienia",
+  "TAB_SETTINGS_TOOLTIP": "Preferencje rozszerzenia",
+  "TAB_STATUS": "Status",
+  "TAB_STATUS_TOOLTIP": "Zaawansowana diagnostyka i logi",
+  "BTN_CREATE_ROOM": "+ Utwórz nowy pokój",
+  "MANUAL_CONNECT_HEADER": "Połączenie ręczne / Zaawansowane",
+  "LABEL_SERVER": "Serwer",
+  "BTN_SERVER_OFFICIAL": "Oficjalny",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Użyj oficjalnego, niezawodnego serwera",
+  "BTN_SERVER_CUSTOM": "Własny",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Połącz się z własnym serwerem",
+  "PLACEHOLDER_SERVER_URL": "wss://twoj-serwer:3000",
+  "LABEL_ROOM_ID": "ID pokoju",
+  "LABEL_ROOM_ID_TOOLTIP": "Unikalny identyfikator pokoju synchronizacji",
+  "PLACEHOLDER_ROOM_ID": "Wpisz ID pokoju",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "Unikalny identyfikator pokoju, do którego chcesz dołączyć",
+  "LABEL_PASSWORD": "Hasło (opcjonalnie)",
+  "LABEL_PASSWORD_TOOLTIP": "Opcjonalne hasło ograniczające dostęp do pokoju",
+  "PLACEHOLDER_PASSWORD": "Hasło pokoju (opcjonalnie)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Hasło do pokoju (pozostaw puste, jeśli brak)",
+  "BTN_JOIN_ROOM": "Dołącz / Utwórz pokój",
+  "BTN_JOIN_ROOM_TOOLTIP": "Połącz z pokojem",
+  "LABEL_PUBLIC_ROOMS": "Pokoje publiczne",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Lista publicznie dostępnych pokoi na tym serwerze",
+  "BTN_REFRESH": "ODŚWIEŻ",
+  "BTN_REFRESH_TOOLTIP": "Odśwież listę pokoi publicznych",
+  "PUBLIC_ROOMS_REFRESHING": "Odświeżanie...",
+  "BTN_REFRESH_COOLDOWN": "CZEKAJ {seconds}s",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "Odświeżanie listy pokoi stygnie. Spróbuj ponownie za {seconds}s.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Odświeżanie pokoi publicznych. Następne odświeżenie za {seconds}s.",
+  "LABEL_ACTIVE_ROOM": "Aktywny pokój",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "Pokój, z którym jesteś aktualnie połączony",
+  "ACTIVE_ROOM_NONE": "BRAK",
+  "ACTIVE_SERVER_OFFICIAL": "Oficjalny serwer",
+  "LABEL_INVITE_LINK": "Link do zaproszenia",
+  "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",
+  "NO_PEERS_CONNECTED": "Brak połączonych uczestników",
+  "BTN_LEAVE_ROOM": "Opuść pokój",
+  "LABEL_SELECT_VIDEO": "Wybierz wideo",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Wybierz kartę przeglądarki zawierającą wideo do synchronizacji",
+  "OPTION_SELECT_TAB": "-- Wybierz kartę --",
+  "LABEL_REMOTE_CONTROL": "Zdalne sterowanie",
+  "BTN_COPY_INVITE": "📋 Link do zaproszenia",
+  "BTN_COPY_INVITE_TOOLTIP": "Kopiuj link zaproszenia",
+  "BTN_PLAY": "▶ Odtwórz",
+  "BTN_PLAY_TOOLTIP": "Wyślij polecenie odtwarzania do wszystkich",
+  "BTN_PAUSE": "⏸ Pauza",
+  "BTN_PAUSE_TOOLTIP": "Wyślij polecenie pauzy do wszystkich",
+  "BTN_SYNC": "⚡ SYNC",
+  "BTN_SYNC_TOOLTIP": "Wymuś synchronizację wszystkich użytkowników",
+  "OPTION_JUMP_TO_OTHERS": "Skocz do innych",
+  "OPTION_JUMP_TO_ME": "Skocz do mnie",
+  "OPTION_JUMP_MODE_TOOLTIP": "Wybierz cel synchronizacji",
+  "LABEL_LAST_ACTIVITY": "Status ostatniej aktywności",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Pokazuje najnowsze polecenie odtwarzania, pauzy lub przewijania",
+  "NO_RECENT_COMMANDS": "Brak ostatnich poleceń",
+  "LOBBY_HEADER": "LOBBY ODCINKA",
+  "LOBBY_WAITING_FOR": "🎬 Czekam na: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "Oczekiwanie na uczestników...",
+  "BTN_SKIP_PLAY": "Pomiń i odtwórz mimo to",
+  "BTN_SKIP_PLAY_TOOLTIP": "Anuluj lobby i odtwórz mimo to",
+  "LOBBY_CONNECT_FIRST": "Najpierw połącz się z pokojem",
+  "LOBBY_CONNECT_FIRST_DESC": "Musisz dołączyć do pokoju przez link zaproszenia lub utworzyć nowy, aby synchronizować wideo.",
+  "BTN_CREATE_ROOM_ALT": "Utwórz nowy pokój",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Utwórz nowy losowy pokój i dołącz",
+  "LABEL_USERNAME": "Twoja nazwa użytkownika",
+  "LABEL_USERNAME_TOOLTIP": "Nazwa użytkownika pomaga innym Cię zidentyfikować.",
+  "PLACEHOLDER_USERNAME": "Anonimowy Koala",
+  "LABEL_HIDE_CLUTTER": "Ukryj zbędne karty",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Filtruje karty bez wideo i niepowiązane domeny, aby zachować porządek",
+  "LABEL_AUTO_SYNC_NEXT": "Auto-sync następnego odcinka",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Automatycznie wstrzymuje i czeka na wszystkich uczestników po zmianie odcinka, a następnie uruchamia się wspólnie.",
+  "LABEL_AUTO_COPY_INVITE": "Auto-kopiowanie zaproszenia",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Automatycznie kopiuje link zaproszenia do schowka po utworzeniu nowego pokoju.",
+  "LABEL_NOTIFICATIONS": "Powiadomienia przeglądarki",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Pokazuje natywne powiadomienia systemowe, gdy ktoś dołącza/odchodzi lub odtwarza/wstrzymuje.",
+  "LABEL_LANGUAGE": "Język aplikacji",
+  "LABEL_LANGUAGE_TOOLTIP": "Wybierz preferowany język rozszerzenia",
+  "LABEL_TROUBLESHOOTING": "Rozwiązywanie problemów",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Narzędzia do rozwiązywania problemów z połączeniem",
+  "BTN_REGEN_ID": "Wygeneruj ponownie ID",
+  "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",
+  "LABEL_CONN_STATUS": "Status połączenia",
+  "LABEL_CONN_STATUS_TOOLTIP": "Bieżący stan połączenia WebSocket",
+  "CONN_STATUS_DISCONNECTED": "Rozłączono",
+  "BTN_RETRY": "PONÓW",
+  "BTN_RETRY_TOOLTIP": "Próba ponownego połączenia z serwerem",
+  "BTN_COPY_LOGS": "Kopiuj logi",
+  "BTN_COPY_LOGS_TOOLTIP": "Kopiuj logi do schowka, aby je udostępnić",
+  "LABEL_VIDEO_DEBUG": "Info debugowania wideo",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Szczegóły techniczne wybranego elementu wideo",
+  "VIDEO_DEBUG_EMPTY": "Nie wybrano karty ani nie wykryto wideo.",
+  "LABEL_HISTORY": "Pełna historia akcji",
+  "LABEL_HISTORY_TOOLTIP": "Chronologiczny rejestr wszystkich poleceń synchronizacji w pokoju",
+  "HISTORY_EMPTY": "Brak aktywności",
+  "LABEL_LOGS": "Logi (ostatnie 50)",
+  "LABEL_LOGS_TOOLTIP": "Logi połączenia technicznego do debugowania",
+  "BTN_CLEAR": "WYCZYŚĆ",
+  "BTN_CLEAR_TOOLTIP": "Wyczyść dane wyjściowe logów",
+  "LABEL_GITHUB": "Repozytorium GitHub",
+  "BTN_ONBOARDING_SKIP": "Pomiń",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Pomiń samouczek",
+  "BTN_ONBOARDING_NEXT": "Dalej",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Przejdź do następnego kroku",
+  "ONBOARDING_1_TITLE": "Witaj w KoalaSync!",
+  "ONBOARDING_1_TEXT": "Oglądaj filmy w idealnej synchronizacji — bez względu na to, gdzie jesteś. Zróbmy szybką wycieczkę!",
+  "ONBOARDING_2_TITLE": "1. Utwórz pokój",
+  "ONBOARDING_2_TEXT": "Zacznij tutaj. Utwórz pokój i udostępnij link zaproszenia znajomym.",
+  "ONBOARDING_3_TITLE": "2. Wybierz wideo",
+  "ONBOARDING_3_TEXT": "Przejdź tutaj, aby wybrać wideo, które chcesz synchronizować. Odtwarzaj, wstrzymuj i przewijaj — każdy pozostaje zsynchronizowany.",
+  "ONBOARDING_4_TITLE": "3. Personalizacja",
+  "ONBOARDING_4_TEXT": "Wybierz fajną nazwę użytkownika, aby znajomi wiedzieli, kim jesteś.",
+  "ONBOARDING_5_TITLE": "Wszystko gotowe!",
+  "ONBOARDING_5_TEXT": "Czas na popcorn. Miłego wspólnego oglądania!",
+  "ERR_CONN_TIMEOUT": "Przekroczono limit czasu połączenia. Spróbuj ponownie.",
+  "ERR_INVALID_SERVER_URL": "Nieprawidłowy format URL serwera.",
+  "ERR_IDENTITY_NOT_LOADED": "Tożsamość nie została jeszcze załadowana. Odczekaj chwilę i spróbuj ponownie.",
+  "ERR_NO_PEERS_TIME": "Brak innych uczestników ze znanym czasem. Przełącz na 'Skocz do mnie'.",
+  "ERR_NO_VIDEO_TAB": "Nie można połączyć się z kartą wideo.",
+  "ERR_SELECT_VIDEO": "Najpierw wybierz wideo!",
+  "TOAST_INVITE_COPIED": "Link zaproszenia skopiowany!",
+  "TOAST_COPY_FAILED": "Nie udało się skopiować do schowka",
+  "TOAST_LOBBY_SKIPPED": "Pominięto lobby odcinka.",
+  "TOAST_LOBBY_SKIP_FAILED": "Nie udało się pominąć lobby.",
+  "TOAST_LOGS_COPIED": "Skopiowano!",
+  "TOAST_PEER_JOINED": "{name} dołączył do pokoju",
+  "TOAST_PEER_LEFT": "{name} opuścił pokój",
+  "TOAST_PEER_ACTION": "{name} {action}",
+  "STATUS_CONNECTED": "Połączono",
+  "STATUS_RECONNECTING": "Ponowne łączenie...",
+  "STATUS_CONNECTING": "Łączenie...",
+  "STATUS_FAILED": "Nieudane",
+  "STATUS_DISCONNECTED": "Rozłączono",
+  "BTN_STATE_JOINING": "🚀 Dołączanie...",
+  "BTN_STATE_RECONNECTING": "🔄 Ponowne łączenie...",
+  "BTN_STATE_PLAYING": "▶ Odtwarzanie...",
+  "BTN_STATE_PAUSING": "⏸ Wstrzymywanie...",
+  "BTN_STATE_SYNCING_GROUP": "Synchronizacja do grupy ({time})...",
+  "BTN_STATE_SYNCING": "Synchronizacja...",
+  "BTN_STATE_SYNCED": "✅ Zsynchronizowano!",
+  "NOTIF_PLAY": "rozpoczął odtwarzanie",
+  "NOTIF_PAUSE": "wstrzymał odtwarzanie",
+  "NOTIF_SEEK": "przewinął wideo",
+  "NOTIF_FORCE_PREPARE": "wymusił synchronizację",
+  "NOTIF_FORCE_EXECUTE": "zsynchronizował wszystkich",
+  "DEBUG_NO_TAB": "Nie wybrano karty docelowej.",
+  "DEBUG_COMM_FAIL": "Nie można skomunikować się z wideo w karcie.",
+  "EMPTY_PEERS_TITLE": "Brak uczestników",
+  "EMPTY_PEERS_HINT": "Udostępnij link zaproszenia, aby rozpocząć",
+  "EMPTY_HISTORY_TITLE": "Brak aktywności",
+  "EMPTY_HISTORY_HINT": "Odtwórz, wstrzymaj lub przewiń, aby zobaczyć historię",
+  "EMPTY_LOGS_TITLE": "Brak logów",
+  "EMPTY_LOGS_HINT": "Zdarzenia połączenia pojawią się tutaj",
+  "EMPTY_ROOMS_TITLE": "Brak aktywnych pokoi",
+  "EMPTY_ROOMS_HINT": "Utwórz pokój lub odśwież, aby znaleźć publiczne",
+  "LABEL_YOU": "Ty",
+  "ONBOARDING_DONE": "Gotowe!",
+  "LABEL_LOBBY_PEER_READY": "Gotowy",
+  "LABEL_LOBBY_PEER_LOADING": "Ładowanie...",
+  "LABEL_PASSWORD_PROTECTED": "Chronione hasłem",
+  "LABEL_PEERS_COUNT": "{count} uczestników",
+  "LABEL_CUSTOM_SERVER": "Własny serwer",
+  "BTN_STATE_CREATING": "🚀 Tworzenie pokoju...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Synchronizacja odcinka nieudana",
+  "NOTIF_LOBBY_CANCEL_MSG": "Auto-sync anulowane: {reason}. Może być konieczna ręczna synchronizacja.",
+  "LOBBY_CANCEL_TIMEOUT": "Limit czasu",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Limit czasu (przywrócono)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Wszyscy inni uczestnicy wyszli",
+  "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_REVIEW": "★ Oceń",
+  "FOOTER_SUPPORT_PROMPT": "Podoba Ci się KoalaSync? Zostaw recenzję!",
+  "LABEL_AUDIO_PROCESSING": "Przetwarzanie dźwięku",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Stosuje efekty dźwiękowe, takie jak kompresja, do odtwarzania wideo",
+  "AUDIO_OPEN_SETTINGS": "Otwórz",
+  "NEW_FEATURE_AUDIO": "Nowość: Przetwarzanie dźwięku — wypróbuj kompresor!",
+  "AUDIO_BACK": "← Wstecz",
+  "AUDIO_PAGE_TITLE": "Ustawienia dźwięku",
+  "AUDIO_MASTER_TOGGLE": "Przetwarzanie dźwięku",
+  "AUDIO_COMPRESSOR": "Kompresor",
+  "AUDIO_COMPRESSOR_ENABLE": "Włączony",
+  "AUDIO_PRESET": "Preset",
+  "AUDIO_PRESET_RECOMMENDED": "Zalecany",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Zakres dynamiki",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Wzmocnienie głosu",
+  "AUDIO_PRESET_SMOOTH": "Płynny",
+  "AUDIO_PRESET_CUSTOM": "Niestandardowy",
+  "AUDIO_PARAM_THRESHOLD": "Próg",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Korektor",
+  "AUDIO_COMING_SOON": "Wkrótce"
+}

extension/locales/pt-BR.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "pt-BR",
+  "HTML_CLASS": "lang-pt-br",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Sala",
+  "TAB_ROOM_TOOLTIP": "Configurações da sala e conexão",
+  "TAB_SYNC": "Sincro",
+  "TAB_SYNC_TOOLTIP": "Controles de sincronia de vídeo e ações",
+  "TAB_SETTINGS": "Opções",
+  "TAB_SETTINGS_TOOLTIP": "Preferências da extensão",
+  "TAB_STATUS": "Status",
+  "TAB_STATUS_TOOLTIP": "Diagnósticos avançados e logs",
+  "BTN_CREATE_ROOM": "+ Criar nova sala",
+  "MANUAL_CONNECT_HEADER": "Conexão manual / Avançado",
+  "LABEL_SERVER": "Servidor",
+  "BTN_SERVER_OFFICIAL": "Oficial",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Usar o servidor oficial confiável",
+  "BTN_SERVER_CUSTOM": "Perso",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Conectar ao seu próprio servidor auto-hospedado",
+  "PLACEHOLDER_SERVER_URL": "wss://seu-servidor:3000",
+  "LABEL_ROOM_ID": "ID da sala",
+  "LABEL_ROOM_ID_TOOLTIP": "O identificador exclusivo para sua sala de sincronização",
+  "PLACEHOLDER_ROOM_ID": "Digite o ID da sala",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "O ID exclusivo da sala na qual você deseja entrar",
+  "LABEL_PASSWORD": "Senha (Opcional)",
+  "LABEL_PASSWORD_TOOLTIP": "Senha opcional para restringir o acesso à sala",
+  "PLACEHOLDER_PASSWORD": "Senha da sala (opcional)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Senha para a sala (deixe em branco se não houver)",
+  "BTN_JOIN_ROOM": "Entrar / Criar sala",
+  "BTN_JOIN_ROOM_TOOLTIP": "Conectar à sala",
+  "LABEL_PUBLIC_ROOMS": "Salas públicas",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Lista de salas públicas disponíveis neste servidor",
+  "BTN_REFRESH": "ATUALIZAR",
+  "BTN_REFRESH_TOOLTIP": "Atualizar a lista de salas públicas",
+  "PUBLIC_ROOMS_REFRESHING": "Atualizando...",
+  "BTN_REFRESH_COOLDOWN": "AGUARDE {seconds}s",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "A lista de salas está em espera. Tente novamente em {seconds}s.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Atualizando salas públicas. Próxima atualização em {seconds}s.",
+  "LABEL_ACTIVE_ROOM": "Sala ativa",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "A sala à qual você está conectado no momento",
+  "ACTIVE_ROOM_NONE": "NENHUMA",
+  "ACTIVE_SERVER_OFFICIAL": "Servidor oficial",
+  "LABEL_INVITE_LINK": "Link de convite",
+  "LABEL_INVITE_LINK_TOOLTIP": "Compartilhe este link com amigos para que eles entrem",
+  "LABEL_PEERS_IN_ROOM": "Participantes na sala",
+  "LABEL_PEERS_IN_ROOM_TOOLTIP": "Outros usuários conectados atualmente a esta sala",
+  "NO_PEERS_CONNECTED": "Sem participantes conectados",
+  "BTN_LEAVE_ROOM": "Sair da sala",
+  "LABEL_SELECT_VIDEO": "Selecionar vídeo",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Escolha a aba do navegador contendo o vídeo a ser sincronizado",
+  "OPTION_SELECT_TAB": "-- Selecione uma aba --",
+  "LABEL_REMOTE_CONTROL": "Controle remoto",
+  "BTN_COPY_INVITE": "📋 Link de convite",
+  "BTN_COPY_INVITE_TOOLTIP": "Copiar link de convite",
+  "BTN_PLAY": "▶ Reproduzir",
+  "BTN_PLAY_TOOLTIP": "Enviar um comando de reproduzir para todos",
+  "BTN_PAUSE": "⏸ Pausar",
+  "BTN_PAUSE_TOOLTIP": "Enviar um comando de pausar para todos",
+  "BTN_SYNC": "⚡ SYNC",
+  "BTN_SYNC_TOOLTIP": "Forçar todos os usuários a sincronizar",
+  "OPTION_JUMP_TO_OTHERS": "Ir para os outros",
+  "OPTION_JUMP_TO_ME": "Trazer para mim",
+  "OPTION_JUMP_MODE_TOOLTIP": "Escolher o alvo de sincronização",
+  "LABEL_LAST_ACTIVITY": "Última atividade",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Mostra o comando mais recente de reproduzir, pausar ou buscar",
+  "NO_RECENT_COMMANDS": "Sem comandos recentes",
+  "LOBBY_HEADER": "LOBBY DE EPISÓDIO",
+  "LOBBY_WAITING_FOR": "🎬 Aguardando: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "Aguardando participantes...",
+  "BTN_SKIP_PLAY": "Pular e reproduzir",
+  "BTN_SKIP_PLAY_TOOLTIP": "Cancelar o lobby e reproduzir assim mesmo",
+  "LOBBY_CONNECT_FIRST": "Entre em uma sala primeiro",
+  "LOBBY_CONNECT_FIRST_DESC": "Você precisa entrar em uma sala através de um link de convite ou criar uma nova para sincronizar vídeos.",
+  "BTN_CREATE_ROOM_ALT": "Criar nova sala",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Criar uma nova sala aleatória e entrar",
+  "LABEL_USERNAME": "Seu nome de usuário",
+  "LABEL_USERNAME_TOOLTIP": "O nome de usuário ajuda os outros a identificá-lo.",
+  "PLACEHOLDER_USERNAME": "Coala anônimo",
+  "LABEL_HIDE_CLUTTER": "Lista de abas limpa",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Filtra abas que não são de vídeo e domínios não relacionados para manter a lista organizada",
+  "LABEL_AUTO_SYNC_NEXT": "Sincro auto do próximo episódio",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Pausa automaticamente e aguarda todos ao mudar de episódio, depois inicia em sincronia.",
+  "LABEL_AUTO_COPY_INVITE": "Auto-copiar link",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Copia automaticamente o link de convite para a área de transferência ao criar uma nova sala.",
+  "LABEL_NOTIFICATIONS": "Notificações do navegador",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Mostra notificações do sistema quando alguém entra/sai ou reproduz/pausa.",
+  "LABEL_LANGUAGE": "Idioma do aplicativo",
+  "LABEL_LANGUAGE_TOOLTIP": "Escolha o idioma de sua preferência para a extensão",
+  "LABEL_TROUBLESHOOTING": "Resolução de problemas",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Ferramentas para solucionar problemas de conexão",
+  "BTN_REGEN_ID": "Regenerar ID de participante",
+  "BTN_REGEN_ID_TOOLTIP": "Regenerar seu ID interno e conectar novamente",
+  "REGEN_ID_DESC": "Use esta opção se notar erros de 'Identidade duplicada'.",
+  "REGEN_ID_OTHER_ISSUE": "Outro problema? Abra um Issue no GitHub",
+  "LABEL_CONN_STATUS": "Status da conexão",
+  "LABEL_CONN_STATUS_TOOLTIP": "Status atual da conexão WebSocket",
+  "CONN_STATUS_DISCONNECTED": "Desconectado",
+  "BTN_RETRY": "REENTRAR",
+  "BTN_RETRY_TOOLTIP": "Tentar reconectar ao servidor",
+  "BTN_COPY_LOGS": "Copiar logs",
+  "BTN_COPY_LOGS_TOOLTIP": "Copiar logs para a área de transferência para compartilhar",
+  "LABEL_VIDEO_DEBUG": "Informações de depuração de vídeo",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Detalhes técnicos sobre o elemento de vídeo selecionado atualmente",
+  "VIDEO_DEBUG_EMPTY": "Nenhuma aba selecionada ou vídeo detectado.",
+  "LABEL_HISTORY": "Histórico completo",
+  "LABEL_HISTORY_TOOLTIP": "Registro cronológico de todos os comandos de sincronização na sala",
+  "HISTORY_EMPTY": "Sem atividade ainda",
+  "LABEL_LOGS": "Logs (Últimos 50)",
+  "LABEL_LOGS_TOOLTIP": "Logs técnicos de conexão para depuração",
+  "BTN_CLEAR": "LIMPAR",
+  "BTN_CLEAR_TOOLTIP": "Limpar a saída dos logs",
+  "LABEL_GITHUB": "Repositório GitHub",
+  "BTN_ONBOARDING_SKIP": "Pular",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Pular o tutorial",
+  "BTN_ONBOARDING_NEXT": "Próximo",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Ir para o próximo passo",
+  "ONBOARDING_1_TITLE": "Bem-vindo ao KoalaSync!",
+  "ONBOARDING_1_TEXT": "Assista a vídeos juntos em perfeita sincronia, não importa onde estejam. Vamos fazer um tour rápido!",
+  "ONBOARDING_2_TITLE": "1. Criar uma sala",
+  "ONBOARDING_2_TEXT": "Comece aqui. Crie uma sala e compartilhe o link de convite com seus amigos.",
+  "ONBOARDING_3_TITLE": "2. Selecionar vídeo",
+  "ONBOARDING_3_TEXT": "Navegue aqui para selecionar o vídeo a ser sincronizado. Reproduza, pause e busque: todos permanecem sincronizados.",
+  "ONBOARDING_4_TITLE": "3. Personalizar",
+  "ONBOARDING_4_TEXT": "Escolha um nome de usuário divertido para que seus amigos saibam quem você é.",
+  "ONBOARDING_5_TITLE": "Tudo pronto!",
+  "ONBOARDING_5_TEXT": "Hora de pegar a pipoca. Divirta-se assistindo com seus amigos!",
+  "ERR_CONN_TIMEOUT": "Tempo limite de conexão esgotado. Tente novamente.",
+  "ERR_INVALID_SERVER_URL": "Formato de URL do servidor inválido.",
+  "ERR_IDENTITY_NOT_LOADED": "Identidade não carregada ainda. Aguarde um momento e tente novamente.",
+  "ERR_NO_PEERS_TIME": "Nenhum outro participante com posição conhecida. Mude para 'Traerlos a mí' / 'Trazer para mim'.",
+  "ERR_NO_VIDEO_TAB": "Não foi possível conectar à aba do vídeo.",
+  "ERR_SELECT_VIDEO": "Selecione um vídeo primeiro!",
+  "TOAST_INVITE_COPIED": "Link de convite copiado!",
+  "TOAST_COPY_FAILED": "Falha ao copiar para a área de transferência",
+  "TOAST_LOBBY_SKIPPED": "Lobby de episódio ignorado.",
+  "TOAST_LOBBY_SKIP_FAILED": "Falha ao ignorar o lobby.",
+  "TOAST_LOGS_COPIED": "Copiado!",
+  "TOAST_PEER_JOINED": "{name} entrou na sala",
+  "TOAST_PEER_LEFT": "{name} saiu da sala",
+  "TOAST_PEER_ACTION": "{name} {action}",
+  "STATUS_CONNECTED": "Conectado",
+  "STATUS_RECONNECTING": "Reconectando...",
+  "STATUS_CONNECTING": "Conectando...",
+  "STATUS_FAILED": "Falhou",
+  "STATUS_DISCONNECTED": "Desconectado",
+  "BTN_STATE_JOINING": "🚀 Entrando...",
+  "BTN_STATE_RECONNECTING": "🔄 Reconectando...",
+  "BTN_STATE_PLAYING": "▶ Reproduzindo...",
+  "BTN_STATE_PAUSING": "⏸ Pausando...",
+  "BTN_STATE_SYNCING_GROUP": "Sincronizando com o grupo ({time})...",
+  "BTN_STATE_SYNCING": "Sincronizando...",
+  "BTN_STATE_SYNCED": "✅ Sincronizado!",
+  "NOTIF_PLAY": "iniciou a reprodução",
+  "NOTIF_PAUSE": "pausou a reprodução",
+  "NOTIF_SEEK": "mudou a posição do vídeo",
+  "NOTIF_FORCE_PREPARE": "iniciou uma sincronização forçada",
+  "NOTIF_FORCE_EXECUTE": "sincronizou todos",
+  "DEBUG_NO_TAB": "Nenhuma aba alvo selecionada.",
+  "DEBUG_COMM_FAIL": "Não foi possível comunicar com o vídeo da aba.",
+  "EMPTY_PEERS_TITLE": "Nenhum participante ainda",
+  "EMPTY_PEERS_HINT": "Compartilhe seu link de convite para começar",
+  "EMPTY_HISTORY_TITLE": "Sem atividade ainda",
+  "EMPTY_HISTORY_HINT": "Reproduza, pause ou busque para ver o histórico",
+  "EMPTY_LOGS_TITLE": "Sem logs",
+  "EMPTY_LOGS_HINT": "Os eventos de conexão aparecerão aqui",
+  "EMPTY_ROOMS_TITLE": "Sem salas ativas",
+  "EMPTY_ROOMS_HINT": "Crie uma sala ou atualize para buscar salas públicas",
+  "LABEL_YOU": "Você",
+  "ONBOARDING_DONE": "Concluído!",
+  "LABEL_LOBBY_PEER_READY": "Pronto",
+  "LABEL_LOBBY_PEER_LOADING": "Carregando...",
+  "LABEL_PASSWORD_PROTECTED": "Protegido por senha",
+  "LABEL_PEERS_COUNT": "{count} participantes",
+  "LABEL_CUSTOM_SERVER": "Servidor personalizado",
+  "BTN_STATE_CREATING": "🚀 Criando sala...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Falha na sincronização do episódio",
+  "NOTIF_LOBBY_CANCEL_MSG": "Sincronização automática cancelada: {reason}. Pode ser necessário sincronizar manualmente.",
+  "LOBBY_CANCEL_TIMEOUT": "Tempo limite esgotado",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Tempo limite esgotado (recuperado)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Todos os outros participantes saíram",
+  "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Tempo limite esgotado — nem todos os participantes carregaram o episódio",
+  "LOBBY_CANCEL_USER": "Cancelado pelo usuário",
+  "NOTIF_ERROR_TITLE": "Erro do KoalaSync",
+  "FOOTER_SUPPORT": "☕ Me pague um café",
+  "FOOTER_REVIEW": "★ Avaliar",
+  "FOOTER_SUPPORT_PROMPT": "Gostou do KoalaSync? Deixe uma avaliação!",
+  "LABEL_AUDIO_PROCESSING": "Processamento de áudio",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Aplica efeitos de áudio como compressão à reprodução de vídeo",
+  "AUDIO_OPEN_SETTINGS": "Abrir",
+  "NEW_FEATURE_AUDIO": "Novo: Processamento de áudio — experimente o compressor!",
+  "AUDIO_BACK": "← Voltar",
+  "AUDIO_PAGE_TITLE": "Configurações de áudio",
+  "AUDIO_MASTER_TOGGLE": "Processamento de áudio",
+  "AUDIO_COMPRESSOR": "Compressor",
+  "AUDIO_COMPRESSOR_ENABLE": "Ativado",
+  "AUDIO_PRESET": "Predefinição",
+  "AUDIO_PRESET_RECOMMENDED": "Recomendado",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Faixa dinâmica",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Aprimoramento de voz",
+  "AUDIO_PRESET_SMOOTH": "Suave",
+  "AUDIO_PRESET_CUSTOM": "Personalizado",
+  "AUDIO_PARAM_THRESHOLD": "Limiar",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Equalizador",
+  "AUDIO_COMING_SOON": "Em breve"
+}

extension/locales/pt.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "pt",
+  "HTML_CLASS": "lang-pt",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Sala",
+  "TAB_ROOM_TOOLTIP": "Definições da sala e ligação",
+  "TAB_SYNC": "Sincronização",
+  "TAB_SYNC_TOOLTIP": "Controlo de sincronização de vídeo e ações remotas",
+  "TAB_SETTINGS": "Definições",
+  "TAB_SETTINGS_TOOLTIP": "Preferências da extensão",
+  "TAB_STATUS": "Estado",
+  "TAB_STATUS_TOOLTIP": "Diagnóstico avanzado e registos",
+  "BTN_CREATE_ROOM": "+ Criar Nova Sala",
+  "MANUAL_CONNECT_HEADER": "Ligação Manual / Avançado",
+  "LABEL_SERVER": "Servidor",
+  "BTN_SERVER_OFFICIAL": "Oficial",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Usar o servidor oficial fiável",
+  "BTN_SERVER_CUSTOM": "Personalizado",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Ligar ao seu próprio servidor auto-hospedado",
+  "PLACEHOLDER_SERVER_URL": "wss://o-seu-servidor:3000",
+  "LABEL_ROOM_ID": "ID da Sala",
+  "LABEL_ROOM_ID_TOOLTIP": "O identificador exclusivo para a sua sala de sincronização",
+  "PLACEHOLDER_ROOM_ID": "Introduzir ID da Sala",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "O ID exclusivo da sala à qual deseja aderir",
+  "LABEL_PASSWORD": "Palavra-passe (Opcional)",
+  "LABEL_PASSWORD_TOOLTIP": "Palavra-passe opcional para restringir o acesso à sala",
+  "PLACEHOLDER_PASSWORD": "Palavra-passe da sala (opcional)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Palavra-passe para la sala (deixar em branco se não houver)",
+  "BTN_JOIN_ROOM": "Entrar / Criar Sala",
+  "BTN_JOIN_ROOM_TOOLTIP": "Ligar à sala",
+  "LABEL_PUBLIC_ROOMS": "Salas Públicas",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Lista de salas públicas disponíveis neste servidor",
+  "BTN_REFRESH": "ATUALIZAR",
+  "BTN_REFRESH_TOOLTIP": "Atualizar a lista de salas públicas",
+  "PUBLIC_ROOMS_REFRESHING": "A atualizar...",
+  "BTN_REFRESH_COOLDOWN": "AGUARDE {seconds}s",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "A atualização da lista de salas está em espera. Tente novamente em {seconds}s.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "A atualizar salas públicas. Próxima atualização disponível em {seconds}s.",
+  "LABEL_ACTIVE_ROOM": "Sala Ativa",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "A sala à qual está atualmente ligado",
+  "ACTIVE_ROOM_NONE": "NENHUMA",
+  "ACTIVE_SERVER_OFFICIAL": "Servidor Oficial",
+  "LABEL_INVITE_LINK": "Link de Invito",
+  "LABEL_INVITE_LINK_TOOLTIP": "Partilhar este link com os amigos para que possam entrar",
+  "LABEL_PEERS_IN_ROOM": "Participantes na Sala",
+  "LABEL_PEERS_IN_ROOM_TOOLTIP": "Outros utilizadores attualmente ligados a questa sala",
+  "NO_PEERS_CONNECTED": "Nenhum partecipante ligado",
+  "BTN_LEAVE_ROOM": "Sair della Sala",
+  "LABEL_SELECT_VIDEO": "Selecionar Vídeo",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Escolher o separador do navegador que contém o vídeo a sincronizar",
+  "OPTION_SELECT_TAB": "-- Selecionar um Separador --",
+  "LABEL_REMOTE_CONTROL": "Controlo Remoto",
+  "BTN_COPY_INVITE": "📋 Link de Invito",
+  "BTN_COPY_INVITE_TOOLTIP": "Copiar Link de Invito",
+  "BTN_PLAY": "▶ Reproduzir",
+  "BTN_PLAY_TOOLTIP": "Enviar um comando de Reproduzir para todos",
+  "BTN_PAUSE": "⏸ Pausa",
+  "BTN_PAUSE_TOOLTIP": "Enviar um comando de Pausa para todos",
+  "BTN_SYNC": "⚡ SYNC",
+  "BTN_SYNC_TOOLTIP": "Forçar todos os utilizadores a sincronizarem-se",
+  "OPTION_JUMP_TO_OTHERS": "Ir para os Outros",
+  "OPTION_JUMP_TO_ME": "Ir para Mim",
+  "OPTION_JUMP_MODE_TOOLTIP": "Escolher o destino de sincronização",
+  "LABEL_LAST_ACTIVITY": "Estado da Última Atividade",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Mostra o comando mais recente de reproduzir, pausa ou busca",
+  "NO_RECENT_COMMANDS": "Nenhum comando recente",
+  "LOBBY_HEADER": "LOBBY DE EPISÓDIO",
+  "LOBBY_WAITING_FOR": "🎬 A aguardar: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "A aguardar participantes...",
+  "BTN_SKIP_PLAY": "Ignorar e reproduzir mesmo assim",
+  "BTN_SKIP_PLAY_TOOLTIP": "Cancelar o lobby e reproduzir mesmo assim",
+  "LOBBY_CONNECT_FIRST": "Ligar-se primeiro a uma sala",
+  "LOBBY_CONNECT_FIRST_DESC": "Precisa de entrar numa sala através de um link de convite ou criar uma nova para sincronizar vídeos.",
+  "BTN_CREATE_ROOM_ALT": "Criar Nova Sala",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Criar uma nova sala aleatória e entrar nela",
+  "LABEL_USERNAME": "O seu Nome de Utilizador",
+  "LABEL_USERNAME_TOOLTIP": "O nome de utilizador ajuda os outros a identificá-lo.",
+  "PLACEHOLDER_USERNAME": "Coala Anónimo",
+  "LABEL_HIDE_CLUTTER": "Ocultar Separadores Desnecessários",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Filtra separadores sem vídeo e domínios não relacionados para manter a lista limpa",
+  "LABEL_AUTO_SYNC_NEXT": "Sincronização Automática do Próximo Episódio",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Pausa automaticamente e aguarda por todos os participantes quando um episódio muda, iniciando depois a reprodução em sincronia.",
+  "LABEL_AUTO_COPY_INVITE": "Copiar Automaticamente o Link de Convite",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Copia automaticamente o link de convite para a área de transferência ao criar uma nova sala.",
+  "LABEL_NOTIFICATIONS": "Notificações do Navegador",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Mostra notificações do sistema quando alguém entra/sai ou reproduz/pausa.",
+  "LABEL_LANGUAGE": "Idioma da App",
+  "LABEL_LANGUAGE_TOOLTIP": "Escolha o seu idioma de preferência para a extensão",
+  "LABEL_TROUBLESHOOTING": "Resolução de Problemas",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Ferramentas para corrigir problemas de ligação",
+  "BTN_REGEN_ID": "Regerar ID do Peer",
+  "BTN_REGEN_ID_TOOLTIP": "Regerar o seu ID interno e voltar a ligar",
+  "REGEN_ID_DESC": "Use isto se vir erros de \"Identidade Duplicata\".",
+  "REGEN_ID_OTHER_ISSUE": "Outro problema? Abra um Issue no GitHub",
+  "LABEL_CONN_STATUS": "Estado da Ligação",
+  "LABEL_CONN_STATUS_TOOLTIP": "Estado atual da ligação WebSocket",
+  "CONN_STATUS_DISCONNECTED": "Desligado",
+  "BTN_RETRY": "TENTAR NOVAMENTE",
+  "BTN_RETRY_TOOLTIP": "Tentar voltar a ligar ao servidor",
+  "BTN_COPY_LOGS": "Copiar Registos",
+  "BTN_COPY_LOGS_TOOLTIP": "Copiar registos para a área de transferência para partilha",
+  "LABEL_VIDEO_DEBUG": "Info de Debug de Vídeo",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Detalhes técnicos sobre o elemento de vídeo atualmente seleccionado",
+  "VIDEO_DEBUG_EMPTY": "Nenhum separador selecionado ou vídeo detetado.",
+  "LABEL_HISTORY": "Histórico Completo de Ações",
+  "LABEL_HISTORY_TOOLTIP": "Registo cronológico de todos os comandos de sincronização na sala",
+  "HISTORY_EMPTY": "Nenhuma atividade ainda",
+  "LABEL_LOGS": "Registos (Últimos 50)",
+  "LABEL_LOGS_TOOLTIP": "Registos de ligação técnica para depuração",
+  "BTN_CLEAR": "LIMPAR",
+  "BTN_CLEAR_TOOLTIP": "Limpar a saída do registo",
+  "LABEL_GITHUB": "Repositório GitHub",
+  "BTN_ONBOARDING_SKIP": "Saltar",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Saltar o tutorial",
+  "BTN_ONBOARDING_NEXT": "Seguinte",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Ir para o passo seguinte",
+  "ONBOARDING_1_TITLE": "Bem-vindo ao KoalaSync!",
+  "ONBOARDING_1_TEXT": "Veja vídeos em conjunto numa sincronizzazione perfetta — não importa onde esteja. Vamos fare uma breve visita guiada!",
+  "ONBOARDING_2_TITLE": "1. Criar uma Sala",
+  "ONBOARDING_2_TEXT": "Comece aqui. Crie uma sala e partilhe o link de convite com os seus amigos.",
+  "ONBOARDING_3_TITLE": "2. Selecionar Vídeo",
+  "ONBOARDING_3_TEXT": "Navegue até aqui para selecionar o vídeo que deseja sincronizar. Reproduza, pause e avance — todos ficam em sincronia.",
+  "ONBOARDING_4_TITLE": "3. Personalizar",
+  "ONBOARDING_4_TEXT": "Escolha um nome de utilizador divertido para que os seus amigos saibam quem você é.",
+  "ONBOARDING_5_TITLE": "Está tudo pronto!",
+  "ONBOARDING_5_TEXT": "Altura de ir buscar pipocas. Divirtam-se a ver juntos!",
+  "ERR_CONN_TIMEOUT": "Ligação expirada. Tente novamente.",
+  "ERR_INVALID_SERVER_URL": "Formato de URL do Servidor inválido.",
+  "ERR_IDENTITY_NOT_LOADED": "Identidade ainda não carregada. Aguarde um momento e tente novamente.",
+  "ERR_NO_PEERS_TIME": "Nenhum outro peer com hora conhecida. Mude para 'Ir para Mim'.",
+  "ERR_NO_VIDEO_TAB": "Não foi possível ligar ao separador do vídeo.",
+  "ERR_SELECT_VIDEO": "Selecione primeiro um vídeo!",
+  "TOAST_INVITE_COPIED": "Link de convite copiado!",
+  "TOAST_COPY_FAILED": "Falha ao copiar para a área de transferência",
+  "TOAST_LOBBY_SKIPPED": "Lobby do episódio ignorado.",
+  "TOAST_LOBBY_SKIP_FAILED": "Falha ao ignorar o lobby.",
+  "TOAST_LOGS_COPIED": "Copiado!",
+  "TOAST_PEER_JOINED": "{name} entrou na sala",
+  "TOAST_PEER_LEFT": "{name} saiu da sala",
+  "TOAST_PEER_ACTION": "{name} {action}",
+  "STATUS_CONNECTED": "Ligado",
+  "STATUS_RECONNECTING": "A voltar a ligar...",
+  "STATUS_CONNECTING": "A ligar...",
+  "STATUS_FAILED": "Falhou",
+  "STATUS_DISCONNECTED": "Desligado",
+  "BTN_STATE_JOINING": "🚀 A entrar...",
+  "BTN_STATE_RECONNECTING": "🔄 A voltar a ligar...",
+  "BTN_STATE_PLAYING": "▶ A reproduzir...",
+  "BTN_STATE_PAUSING": "⏸ A pausar...",
+  "BTN_STATE_SYNCING_GROUP": "A sincronizar com o grupo ({time})....",
+  "BTN_STATE_SYNCING": "A sincronizar...",
+  "BTN_STATE_SYNCED": "✅ Sincronizado!",
+  "NOTIF_PLAY": "iniciou a reprodução",
+  "NOTIF_PAUSE": "pausou a reprodução",
+  "NOTIF_SEEK": "avançou/recuou no vídeo",
+  "NOTIF_FORCE_PREPARE": "iniciou a sincronização forçada",
+  "NOTIF_FORCE_EXECUTE": "sincronizou todos",
+  "DEBUG_NO_TAB": "Nenhum separador de destino selecionado.",
+  "DEBUG_COMM_FAIL": "Não foi possível comunicar com o vídeo do separador.",
+  "EMPTY_PEERS_TITLE": "Nenhum participante ainda",
+  "EMPTY_PEERS_HINT": "Partilhe o seu link de convite para começar",
+  "EMPTY_HISTORY_TITLE": "Nenhuma atividade ainda",
+  "EMPTY_HISTORY_HINT": "Reproduza, pause ou avance para ver o histórico",
+  "EMPTY_LOGS_TITLE": "Nenhum registo",
+  "EMPTY_LOGS_HINT": "Os eventi de ligação vão aparecer aqui",
+  "EMPTY_ROOMS_TITLE": "Nenhuma sala ativa",
+  "EMPTY_ROOMS_HINT": "Crie uma sala ou atualize para encontrar salas públicas",
+  "LABEL_YOU": "Tu",
+  "ONBOARDING_DONE": "Concluído!",
+  "LABEL_LOBBY_PEER_READY": "Pronto",
+  "LABEL_LOBBY_PEER_LOADING": "A carregar...",
+  "LABEL_PASSWORD_PROTECTED": "Protegido por Palavra-passe",
+  "LABEL_PEERS_COUNT": "{count} participantes",
+  "LABEL_CUSTOM_SERVER": "Servidor Personalizado",
+  "BTN_STATE_CREATING": "🚀 A Criar Sala...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Sincronização do Episódio Falhou",
+  "NOTIF_LOBBY_CANCEL_MSG": "Sincronização automática cancelada: {reason}. Pode ter de sincronizar manualmente.",
+  "LOBBY_CANCEL_TIMEOUT": "Timeout",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Timeout (recuperado)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Todos os outros participantes saíram",
+  "LOBBY_CANCEL_TIMEOUT_PEERS_LOAD": "Timeout — nem todos os participantes carregaram o episódio",
+  "LOBBY_CANCEL_USER": "Cancelado pelo utilizador",
+  "NOTIF_ERROR_TITLE": "Erro do KoalaSync",
+  "FOOTER_SUPPORT": "☕ Oferece um café",
+  "FOOTER_REVIEW": "★ Avaliar",
+  "FOOTER_SUPPORT_PROMPT": "Gostas do KoalaSync? Deixa uma avaliação!",
+  "LABEL_AUDIO_PROCESSING": "Processamento de áudio",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Aplica efeitos de áudio como compressão à reprodução de vídeo",
+  "AUDIO_OPEN_SETTINGS": "Abrir",
+  "NEW_FEATURE_AUDIO": "Novo: Processamento de áudio — experimente o compressor!",
+  "AUDIO_BACK": "← Voltar",
+  "AUDIO_PAGE_TITLE": "Configurações de áudio",
+  "AUDIO_MASTER_TOGGLE": "Processamento de áudio",
+  "AUDIO_COMPRESSOR": "Compressor",
+  "AUDIO_COMPRESSOR_ENABLE": "Ativado",
+  "AUDIO_PRESET": "Predefinição",
+  "AUDIO_PRESET_RECOMMENDED": "Recomendado",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Gama dinâmica",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Melhoria vocal",
+  "AUDIO_PRESET_SMOOTH": "Suave",
+  "AUDIO_PRESET_CUSTOM": "Personalizado",
+  "AUDIO_PARAM_THRESHOLD": "Limiar",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Equalizador",
+  "AUDIO_COMING_SOON": "Em breve"
+}

extension/locales/ru.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "ru",
+  "HTML_CLASS": "lang-ru",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Комната",
+  "TAB_ROOM_TOOLTIP": "Настройки комнаты и подключение",
+  "TAB_SYNC": "Синхро",
+  "TAB_SYNC_TOOLTIP": "Управление синхронизацией видео и действия",
+  "TAB_SETTINGS": "Опции",
+  "TAB_SETTINGS_TOOLTIP": "Настройки расширения",
+  "TAB_STATUS": "Статус",
+  "TAB_STATUS_TOOLTIP": "Дополнительная диагностика и журналы",
+  "BTN_CREATE_ROOM": "+ Создать комнату",
+  "MANUAL_CONNECT_HEADER": "Ручное подключение / Дополнительно",
+  "LABEL_SERVER": "Сервер",
+  "BTN_SERVER_OFFICIAL": "Официальный",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Использовать официальный надежный сервер",
+  "BTN_SERVER_CUSTOM": "Свой",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Подключиться к своему выделенному серверу",
+  "PLACEHOLDER_SERVER_URL": "wss://ваш-сервер:3000",
+  "LABEL_ROOM_ID": "ID комнаты",
+  "LABEL_ROOM_ID_TOOLTIP": "Уникальный идентификатор вашей синхронной комнаты",
+  "PLACEHOLDER_ROOM_ID": "Введите ID комнаты",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "Уникальный ID комнаты, к которой хотите присоединиться",
+  "LABEL_PASSWORD": "Пароль (Опционально)",
+  "LABEL_PASSWORD_TOOLTIP": "Дополнительный пароль для ограничения доступа к комнате",
+  "PLACEHOLDER_PASSWORD": "Пароль комнаты (опционально)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Пароль от комнаты (оставьте пустым, если его нет)",
+  "BTN_JOIN_ROOM": "Войти / Создать комнату",
+  "BTN_JOIN_ROOM_TOOLTIP": "Подключиться к комнате",
+  "LABEL_PUBLIC_ROOMS": "Публичные комнаты",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Список публично доступных комнат на этом сервере",
+  "BTN_REFRESH": "ОБНОВИТЬ",
+  "BTN_REFRESH_TOOLTIP": "Обновить список публичных комнат",
+  "PUBLIC_ROOMS_REFRESHING": "Обновление...",
+  "BTN_REFRESH_COOLDOWN": "ЖДИТЕ {seconds}с",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "Список комнат временно ограничен. Повторите через {seconds}с.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Обновление публичных комнат. Следующее обновление через {seconds}с.",
+  "LABEL_ACTIVE_ROOM": "Активная комната",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "Комната, к которой вы сейчас подключены",
+  "ACTIVE_ROOM_NONE": "НЕТ",
+  "ACTIVE_SERVER_OFFICIAL": "Официальный сервер",
+  "LABEL_INVITE_LINK": "Ссылка-приглашение",
+  "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",
+  "NO_PEERS_CONNECTED": "Нет подключенных участников",
+  "BTN_LEAVE_ROOM": "Выйти из комнаты",
+  "LABEL_SELECT_VIDEO": "Выбрать видео",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Выберите вкладку браузера, содержащую видео для синхронизации",
+  "OPTION_SELECT_TAB": "-- Выберите вкладку --",
+  "LABEL_REMOTE_CONTROL": "Дистанционное управление",
+  "BTN_COPY_INVITE": "📋 Ссылка",
+  "BTN_COPY_INVITE_TOOLTIP": "Копировать ссылку-приглашение",
+  "BTN_PLAY": "▶ Запуск",
+  "BTN_PLAY_TOOLTIP": "Отправить команду воспроизведения всем",
+  "BTN_PAUSE": "⏸ Пауза",
+  "BTN_PAUSE_TOOLTIP": "Отправить команду паузы всем",
+  "BTN_SYNC": "⚡ СИНХРО",
+  "BTN_SYNC_TOOLTIP": "Принудительно синхронизировать всех участников",
+  "OPTION_JUMP_TO_OTHERS": "Перейти к другим",
+  "OPTION_JUMP_TO_ME": "Синхронизировать по мне",
+  "OPTION_JUMP_MODE_TOOLTIP": "Выбрать цель синхронизации",
+  "LABEL_LAST_ACTIVITY": "Последняя активность",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "Показывает самую последнюю команду воспроизведения, паузы или перемотки",
+  "NO_RECENT_COMMANDS": "Нет последних команд",
+  "LOBBY_HEADER": "ЛОББИ СЕРИИ",
+  "LOBBY_WAITING_FOR": "🎬 Ожидание: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "Ожидание участников...",
+  "BTN_SKIP_PLAY": "Пропустить и запустить",
+  "BTN_SKIP_PLAY_TOOLTIP": "Закрыть лобби и воспроизвести в любом случае",
+  "LOBBY_CONNECT_FIRST": "Сначала войдите в комнату",
+  "LOBBY_CONNECT_FIRST_DESC": "Вам необходимо войти в комнату по ссылке-приглашению или создать новую, чтобы синхронизировать видео.",
+  "BTN_CREATE_ROOM_ALT": "Создать новую комнату",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Создать новую случайную комнату и войти",
+  "LABEL_USERNAME": "Ваше имя пользователя",
+  "LABEL_USERNAME_TOOLTIP": "Имя пользователя помогает другим узнать вас.",
+  "PLACEHOLDER_USERNAME": "Анонимный Коала",
+  "LABEL_HIDE_CLUTTER": "Чистый список вкладок",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Скрывает вкладки без видео и несвязанные домены для порядка",
+  "LABEL_AUTO_SYNC_NEXT": "Автосинхрон следующей серии",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Автоматически ставит на паузу и ждет всех при смене серии, затем запускает видео синхронно.",
+  "LABEL_AUTO_COPY_INVITE": "Автокопирование ссылки",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Автоматически копирует ссылку-приглашение в буфер обмена при создании новой комнаты.",
+  "LABEL_NOTIFICATIONS": "Уведомления браузера",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Показывает системные уведомления, когда кто-то входит/выходит или запускает/приостанавливает воспроизведение.",
+  "LABEL_LANGUAGE": "Язык приложения",
+  "LABEL_LANGUAGE_TOOLTIP": "Выберите предпочтительный язык интерфейса расширения",
+  "LABEL_TROUBLESHOOTING": "Устранение неполадок",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Инструменты для исправления проблем с подключением",
+  "BTN_REGEN_ID": "Сбросить Peer ID",
+  "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",
+  "LABEL_CONN_STATUS": "Статус подключения",
+  "LABEL_CONN_STATUS_TOOLTIP": "Текущий статус WebSocket-соединения с сервером",
+  "CONN_STATUS_DISCONNECTED": "Отключено",
+  "BTN_RETRY": "ПОВТОРИТЬ",
+  "BTN_RETRY_TOOLTIP": "Попробовать переподключиться к серверу",
+  "BTN_COPY_LOGS": "Копировать логи",
+  "BTN_COPY_LOGS_TOOLTIP": "Скопировать логи в буфер обмена для отправки",
+  "LABEL_VIDEO_DEBUG": "Отладочные данные видео",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Технические сведения о выбранном видеоэлементе",
+  "VIDEO_DEBUG_EMPTY": "Вкладка не выбрана или видео не обнаружено.",
+  "LABEL_HISTORY": "История действий",
+  "LABEL_HISTORY_TOOLTIP": "Хронологический список всех команд синхронизации в комнате",
+  "HISTORY_EMPTY": "Нет недавней активности",
+  "LABEL_LOGS": "Логи (Последние 50)",
+  "LABEL_LOGS_TOOLTIP": "Технические системные сообщения подключения",
+  "BTN_CLEAR": "ОЧИСТИТЬ",
+  "BTN_CLEAR_TOOLTIP": "Очистить вывод логов",
+  "LABEL_GITHUB": "Репозиторий GitHub",
+  "BTN_ONBOARDING_SKIP": "Пропустить",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Пропустить руководство",
+  "BTN_ONBOARDING_NEXT": "Далее",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Перейти к следующему шагу",
+  "ONBOARDING_1_TITLE": "Добро пожаловать в KoalaSync!",
+  "ONBOARDING_1_TEXT": "Смотрите видео в идеальной синхронизации вместе — где бы вы ни находились. Давайте проведем небольшую экскурсию!",
+  "ONBOARDING_2_TITLE": "1. Создайте комнату",
+  "ONBOARDING_2_TEXT": "Начните здесь. Создайте комнату и поделитесь ссылкой-приглашением со своими друзьями.",
+  "ONBOARDING_3_TITLE": "2. Выберите видео",
+  "ONBOARDING_3_TEXT": "Выберите вкладку с видео для синхронизации. Запуск, пауза, перемотка — воспроизведение синхронизируется у всех.",
+  "ONBOARDING_4_TITLE": "3. Настройте профиль",
+  "ONBOARDING_4_TEXT": "Введите имя пользователя, чтобы друзья знали, кто совершает действия.",
+  "ONBOARDING_5_TITLE": "Всё готово!",
+  "ONBOARDING_5_TEXT": "Время готовить попкорн. Приятного совместного просмотра!",
+  "ERR_CONN_TIMEOUT": "Время ожидания подключения истекло. Пожалуйста, попробуйте снова.",
+  "ERR_INVALID_SERVER_URL": "Неверный формат URL-адреса сервера.",
+  "ERR_IDENTITY_NOT_LOADED": "Идентификатор еще не загружен. Подождите немного и повторите попытку.",
+  "ERR_NO_PEERS_TIME": "Нет других участников с известной позицией плеера. Выберите 'Синхронизировать по мне'.",
+  "ERR_NO_VIDEO_TAB": "Не удалось подключиться к вкладке с видео.",
+  "ERR_SELECT_VIDEO": "Пожалуйста, сначала выберите вкладку с видео!",
+  "TOAST_INVITE_COPIED": "Ссылка скопирована в буфер обмена!",
+  "TOAST_COPY_FAILED": "Не удалось скопировать ссылку в буфер обмена",
+  "TOAST_LOBBY_SKIPPED": "Ожидание серии отменено.",
+  "TOAST_LOBBY_SKIP_FAILED": "Не удалось отменить ожидание серии.",
+  "TOAST_LOGS_COPIED": "Скопировано!",
+  "TOAST_PEER_JOINED": "{name} вошел в комнату",
+  "TOAST_PEER_LEFT": "{name} вышел из комнаты",
+  "TOAST_PEER_ACTION": "{name}: {action}",
+  "STATUS_CONNECTED": "Подключено",
+  "STATUS_RECONNECTING": "Переподключение...",
+  "STATUS_CONNECTING": "Подключение...",
+  "STATUS_FAILED": "Ошибка",
+  "STATUS_DISCONNECTED": "Отключено",
+  "BTN_STATE_JOINING": "🚀 Вход...",
+  "BTN_STATE_RECONNECTING": "🔄 Переподключение...",
+  "BTN_STATE_PLAYING": "▶ Запуск...",
+  "BTN_STATE_PAUSING": "⏸ Пауза...",
+  "BTN_STATE_SYNCING_GROUP": "Синхронизация по группе ({time})...",
+  "BTN_STATE_SYNCING": "Синхронизация...",
+  "BTN_STATE_SYNCED": "✅ Синхронно!",
+  "NOTIF_PLAY": "запустил воспроизведение",
+  "NOTIF_PAUSE": "приостановил воспроизведение",
+  "NOTIF_SEEK": "перемотал видео",
+  "NOTIF_FORCE_PREPARE": "запустил принудительный синхрон",
+  "NOTIF_FORCE_EXECUTE": "синхронизировал воспроизведение у всех",
+  "DEBUG_NO_TAB": "Целевая вкладка не выбрана.",
+  "DEBUG_COMM_FAIL": "Не удалось связаться с плеером на вкладке.",
+  "EMPTY_PEERS_TITLE": "Участников пока нет",
+  "EMPTY_PEERS_HINT": "Поделитесь ссылкой-приглашением, чтобы начать",
+  "EMPTY_HISTORY_TITLE": "История действий пуста",
+  "EMPTY_HISTORY_HINT": "Запускайте, останавливайте или перематывайте видео, чтобы увидеть лог",
+  "EMPTY_LOGS_TITLE": "Журнал пуст",
+  "EMPTY_LOGS_HINT": "События подключения будут отображаться здесь",
+  "EMPTY_ROOMS_TITLE": "Нет активных комнат",
+  "EMPTY_ROOMS_HINT": "Создайте комнату или обновите список, чтобы найти публичные",
+  "LABEL_YOU": "Вы",
+  "ONBOARDING_DONE": "Готово!",
+  "LABEL_LOBBY_PEER_READY": "Готов",
+  "LABEL_LOBBY_PEER_LOADING": "Загрузка...",
+  "LABEL_PASSWORD_PROTECTED": "Защищено паролем",
+  "LABEL_PEERS_COUNT": "{count} участников",
+  "LABEL_CUSTOM_SERVER": "Свой сервер",
+  "BTN_STATE_CREATING": "🚀 Создание комнаты...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Ошибка синхронизации серии",
+  "NOTIF_LOBBY_CANCEL_MSG": "Автосинхронизация отменена: {reason}. Возможно, вам придется выполнить синхронизацию вручную.",
+  "LOBBY_CANCEL_TIMEOUT": "Время ожидания истекло",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Время ожидания истекло (восстановлено)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Все остальные участники вышли",
+  "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_REVIEW": "★ Оценить",
+  "FOOTER_SUPPORT_PROMPT": "Нравится KoalaSync? Оставьте отзыв!",
+  "LABEL_AUDIO_PROCESSING": "Обработка звука",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Применяет аудиоэффекты, такие как сжатие, к воспроизведению видео",
+  "AUDIO_OPEN_SETTINGS": "Открыть",
+  "NEW_FEATURE_AUDIO": "Новое: Обработка звука — попробуйте компрессор!",
+  "AUDIO_BACK": "← Назад",
+  "AUDIO_PAGE_TITLE": "Настройки звука",
+  "AUDIO_MASTER_TOGGLE": "Обработка звука",
+  "AUDIO_COMPRESSOR": "Компрессор",
+  "AUDIO_COMPRESSOR_ENABLE": "Включено",
+  "AUDIO_PRESET": "Пресет",
+  "AUDIO_PRESET_RECOMMENDED": "Рекомендуемый",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Динамический диапазон",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Улучшение голоса",
+  "AUDIO_PRESET_SMOOTH": "Плавный",
+  "AUDIO_PRESET_CUSTOM": "Пользовательский",
+  "AUDIO_PARAM_THRESHOLD": "Порог",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Эквалайзер",
+  "AUDIO_COMING_SOON": "Скоро"
+}

extension/locales/tr.json

@@ -0,0 +1,209 @@
+{
+  "LANG_CODE": "tr",
+  "HTML_CLASS": "lang-tr",
+  "APP_TITLE": "KoalaSync",
+  "TAB_ROOM": "Oda",
+  "TAB_ROOM_TOOLTIP": "Oda ayarları ve bağlantı",
+  "TAB_SYNC": "Senkronizasyon",
+  "TAB_SYNC_TOOLTIP": "Video senkronizasyon kontrolleri ve uzaktan işlemler",
+  "TAB_SETTINGS": "Ayarlar",
+  "TAB_SETTINGS_TOOLTIP": "Eklenti tercihleri",
+  "TAB_STATUS": "Durum",
+  "TAB_STATUS_TOOLTIP": "Gelişmiş Teşhis ve Günlükler",
+  "BTN_CREATE_ROOM": "+ Yeni Oda Oluştur",
+  "MANUAL_CONNECT_HEADER": "Manuel Bağlantı / Gelişmiş",
+  "LABEL_SERVER": "Sunucu",
+  "BTN_SERVER_OFFICIAL": "Resmi",
+  "BTN_SERVER_OFFICIAL_TOOLTIP": "Resmi güvenilir sunucuyu kullanın",
+  "BTN_SERVER_CUSTOM": "Özel",
+  "BTN_SERVER_CUSTOM_TOOLTIP": "Kendi barındırdığınız sunucuya bağlanın",
+  "PLACEHOLDER_SERVER_URL": "wss://sunucunuz:3000",
+  "LABEL_ROOM_ID": "Oda Kimliği",
+  "LABEL_ROOM_ID_TOOLTIP": "Senkronizasyon odanız için benzersiz kimlik",
+  "PLACEHOLDER_ROOM_ID": "Oda Kimliğini Girin",
+  "PLACEHOLDER_ROOM_ID_TOOLTIP": "Katılmak istediğiniz odanın benzersiz kimliği",
+  "LABEL_PASSWORD": "Şifre (İsteğe Bağlı)",
+  "LABEL_PASSWORD_TOOLTIP": "Oda erişimini kısıtlamak için isteğe bağlı şifre",
+  "PLACEHOLDER_PASSWORD": "Oda Şifresi (isteğe bağlı)",
+  "PLACEHOLDER_PASSWORD_TOOLTIP": "Oda şifresi (yoksa boş bırakın)",
+  "BTN_JOIN_ROOM": "Odaya Katıl / Oluştur",
+  "BTN_JOIN_ROOM_TOOLTIP": "Odaya bağlan",
+  "LABEL_PUBLIC_ROOMS": "Açık Odalar",
+  "LABEL_PUBLIC_ROOMS_TOOLTIP": "Bu sunucuda herkese açık odaların listesi",
+  "BTN_REFRESH": "YENİLE",
+  "BTN_REFRESH_TOOLTIP": "Genel odaların listesini yenile",
+  "PUBLIC_ROOMS_REFRESHING": "Yenileniyor...",
+  "BTN_REFRESH_COOLDOWN": "{seconds}sn BEKLE",
+  "BTN_REFRESH_COOLDOWN_TOOLTIP": "Oda listesi yenileme soğuyor. {seconds}sn sonra tekrar deneyin.",
+  "PUBLIC_ROOMS_REFRESHING_COOLDOWN": "Açık odalar yenileniyor. Bir sonraki yenileme {seconds}sn sonra yapılabilecek.",
+  "LABEL_ACTIVE_ROOM": "Aktif Oda",
+  "LABEL_ACTIVE_ROOM_TOOLTIP": "Şu anda bağlı olduğunuz oda",
+  "ACTIVE_ROOM_NONE": "YOK",
+  "ACTIVE_SERVER_OFFICIAL": "Resmi Sunucu",
+  "LABEL_INVITE_LINK": "Davet Linki",
+  "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",
+  "NO_PEERS_CONNECTED": "Bağlı kimse yok",
+  "BTN_LEAVE_ROOM": "Odadan Ayrıl",
+  "LABEL_SELECT_VIDEO": "Video Seç",
+  "LABEL_SELECT_VIDEO_TOOLTIP": "Senkronize edilecek videoyu içeren tarayıcı sekmesini seçin",
+  "OPTION_SELECT_TAB": "-- Bir Sekme Seçin --",
+  "LABEL_REMOTE_CONTROL": "Uzaktan Kumanda",
+  "BTN_COPY_INVITE": "📋 Davet Linki",
+  "BTN_COPY_INVITE_TOOLTIP": "Davet Linkini Kopyala",
+  "BTN_PLAY": "▶ Oynat",
+  "BTN_PLAY_TOOLTIP": "Herkese Oynat komutu gönder",
+  "BTN_PAUSE": "⏸ Duraklat",
+  "BTN_PAUSE_TOOLTIP": "Herkese Duraklat komutu gönder",
+  "BTN_SYNC": "⚡ SYNC",
+  "BTN_SYNC_TOOLTIP": "Tüm kullanıcıları senkronize etmeye zorla",
+  "OPTION_JUMP_TO_OTHERS": "Diğerlerine Atla",
+  "OPTION_JUMP_TO_ME": "Bana Atla",
+  "OPTION_JUMP_MODE_TOOLTIP": "Senkronizasyon hedefini seçin",
+  "LABEL_LAST_ACTIVITY": "Son Etkinlik Durumu",
+  "LABEL_LAST_ACTIVITY_TOOLTIP": "En son oynatma, duraklatma veya arama komutunu gösterir",
+  "NO_RECENT_COMMANDS": "Son komut yok",
+  "LOBBY_HEADER": "BÖLÜM LOBİSİ",
+  "LOBBY_WAITING_FOR": "🎬 Beklenen: \"{title}\"",
+  "LOBBY_WAITING_PEERS": "Bağlantılar bekleniyor...",
+  "BTN_SKIP_PLAY": "Atla ve Yine de Oynat",
+  "BTN_SKIP_PLAY_TOOLTIP": "Lobiyi iptal et ve yine de oynat",
+  "LOBBY_CONNECT_FIRST": "Önce bir odaya bağlanın",
+  "LOBBY_CONNECT_FIRST_DESC": "Videoları senkronize etmek için bir davet bağlantısı aracılığıyla bir odaya katılmanız veya yeni bir oda oluşturmanız gerekir.",
+  "BTN_CREATE_ROOM_ALT": "Yeni Oda Oluştur",
+  "BTN_CREATE_ROOM_ALT_TOOLTIP": "Yeni rastgele bir oda oluşturun ve katılın",
+  "LABEL_USERNAME": "Kullanıcı Adınız",
+  "LABEL_USERNAME_TOOLTIP": "Kullanıcı adı başkalarının sizi tanımasına yardımcı olur.",
+  "PLACEHOLDER_USERNAME": "Anonim Koala",
+  "LABEL_HIDE_CLUTTER": "Gereksiz Sekmeleri Gizle",
+  "LABEL_HIDE_CLUTTER_TOOLTIP": "Listeyi temiz tutmak için video olmayan sekmeleri ve alakasız alan adlarını filtreler",
+  "LABEL_AUTO_SYNC_NEXT": "Sonraki Bölümü Otomatik Eşitle",
+  "LABEL_AUTO_SYNC_NEXT_TOOLTIP": "Bir bölüm değiştiğinde otomatik olarak duraklatılır ve tüm bağlantıların hazır olmasını bekler, ardından birlikte senkronize olarak başlar.",
+  "LABEL_AUTO_COPY_INVITE": "Davet Linkini Otomatik Kopyala",
+  "LABEL_AUTO_COPY_INVITE_TOOLTIP": "Yeni bir oda oluşturulduğunda davet bağlantısını panoya otomatik olarak kopyalar.",
+  "LABEL_NOTIFICATIONS": "Tarayıcı Bildirimleri",
+  "LABEL_NOTIFICATIONS_TOOLTIP": "Biri katıldığında/ayrıldığında veya oynattığında/duraklattığında yerel sistem bildirimlerini gösterir.",
+  "LABEL_LANGUAGE": "Uygulama Dili",
+  "LABEL_LANGUAGE_TOOLTIP": "Tercih ettiğiniz eklenti dilini seçin",
+  "LABEL_TROUBLESHOOTING": "Sorun Giderme",
+  "LABEL_TROUBLESHOOTING_TOOLTIP": "Bağlantı sorunlarını giderme araçları",
+  "BTN_REGEN_ID": "Bağlantı Kimliğini Yeniden Oluştur",
+  "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",
+  "LABEL_CONN_STATUS": "Bağlantı Durumu",
+  "LABEL_CONN_STATUS_TOOLTIP": "Mevcut WebSocket bağlantı durumu",
+  "CONN_STATUS_DISCONNECTED": "Bağlantı Kesildi",
+  "BTN_RETRY": "TEKRAR DENE",
+  "BTN_RETRY_TOOLTIP": "Sunucuya yeniden bağlanmayı dene",
+  "BTN_COPY_LOGS": "Günlükleri Kopyala",
+  "BTN_COPY_LOGS_TOOLTIP": "Paylaşmak için günlükleri panoya kopyalayın",
+  "LABEL_VIDEO_DEBUG": "Video Hata Ayıklama Bilgisi",
+  "LABEL_VIDEO_DEBUG_TOOLTIP": "Şu anda seçili video öğesi hakkında teknik ayrıntılar",
+  "VIDEO_DEBUG_EMPTY": "Sekme seçilmedi veya video algılanmadı.",
+  "LABEL_HISTORY": "Tam İşlem Geçmişi",
+  "LABEL_HISTORY_TOOLTIP": "Odadaki tüm senkronizasyon komutlarının kronolojik günlüğü",
+  "HISTORY_EMPTY": "Henüz etkinlik yok",
+  "LABEL_LOGS": "Günlükler (Son 50)",
+  "LABEL_LOGS_TOOLTIP": "Hata ayıklama için teknik bağlantı günlükleri",
+  "BTN_CLEAR": "TEMİZLE",
+  "BTN_CLEAR_TOOLTIP": "Günlük çıktısını temizle",
+  "LABEL_GITHUB": "GitHub Deposu",
+  "BTN_ONBOARDING_SKIP": "Atla",
+  "BTN_ONBOARDING_SKIP_TOOLTIP": "Eğitimi atla",
+  "BTN_ONBOARDING_NEXT": "İleri",
+  "BTN_ONBOARDING_NEXT_TOOLTIP": "Bir sonraki adıma git",
+  "ONBOARDING_1_TITLE": "KoalaSync'e Hoş Geldiniz!",
+  "ONBOARDING_1_TEXT": "Nerede olursanız olun videoları mükemmel bir senkronizasyonla birlikte izleyin. Hızlı bir tura çıkalım!",
+  "ONBOARDING_2_TITLE": "1. Oda Oluştur",
+  "ONBOARDING_2_TEXT": "Buradan başlayın. Bir oda oluşturun ve davet bağlantısını arkadaşlarınızla paylaşın.",
+  "ONBOARDING_3_TITLE": "2. Video Seç",
+  "ONBOARDING_3_TEXT": "Senkronize etmek istediğiniz videoyu seçmek için buraya gidin. Oynatın, duraklatın ve arayın — herkes senkronize kalır.",
+  "ONBOARDING_4_TITLE": "3. Kişiselleştir",
+  "ONBOARDING_4_TEXT": "Arkadaşlarınızın kim olduğunuzu bilmesi için eğlenceli bir kullanıcı adı seçin.",
+  "ONBOARDING_5_TITLE": "Her şey hazır!",
+  "ONBOARDING_5_TEXT": "Patlamış mısır alma zamanı. Birlikte izlemenin keyfini çıkarın!",
+  "ERR_CONN_TIMEOUT": "Bağlantı zaman aşımına uğradı. Lütfen tekrar deneyin.",
+  "ERR_INVALID_SERVER_URL": "Geçersiz Sunucu URL formatı.",
+  "ERR_IDENTITY_NOT_LOADED": "Kimlik henüz yüklenmedi. Biraz bekleyin ve tekrar deneyin.",
+  "ERR_NO_PEERS_TIME": "Bilinen bir zamanı olan başka bağlantı yok. 'Bana Atla' seçeneğine geçin.",
+  "ERR_NO_VIDEO_TAB": "Video sekmesine bağlanılamadı.",
+  "ERR_SELECT_VIDEO": "Lütfen önce bir video seçin!",
+  "TOAST_INVITE_COPIED": "Davet bağlantısı kopyalandı!",
+  "TOAST_COPY_FAILED": "Panoya kopyalanamadı",
+  "TOAST_LOBBY_SKIPPED": "Bölüm Lobisi atlandı.",
+  "TOAST_LOBBY_SKIP_FAILED": "Lobi atlanamadı.",
+  "TOAST_LOGS_COPIED": "Kopyalandı!",
+  "TOAST_PEER_JOINED": "{name} odaya katıldı",
+  "TOAST_PEER_LEFT": "{name} odadan ayrıldı",
+  "TOAST_PEER_ACTION": "{name} {action}",
+  "STATUS_CONNECTED": "Bağlandı",
+  "STATUS_RECONNECTING": "Yeniden bağlanılıyor...",
+  "STATUS_CONNECTING": "Bağlanılıyor...",
+  "STATUS_FAILED": "Başarısız",
+  "STATUS_DISCONNECTED": "Bağlantı Kesildi",
+  "BTN_STATE_JOINING": "🚀 Katılınıyor...",
+  "BTN_STATE_RECONNECTING": "🔄 Yeniden bağlanılıyor...",
+  "BTN_STATE_PLAYING": "▶ Oynatılıyor...",
+  "BTN_STATE_PAUSING": "⏸ Duraklatılıyor...",
+  "BTN_STATE_SYNCING_GROUP": "Gruba eşitleniyor ({time})...",
+  "BTN_STATE_SYNCING": "Senkronize ediliyor...",
+  "BTN_STATE_SYNCED": "✅ Eşitlendi!",
+  "NOTIF_PLAY": "oynatmayı başlattı",
+  "NOTIF_PAUSE": "oynatmayı duraklattı",
+  "NOTIF_SEEK": "videoda arama yaptı",
+  "NOTIF_FORCE_PREPARE": "zorunlu eşitleme başlattı",
+  "NOTIF_FORCE_EXECUTE": "herkesi eşitledi",
+  "DEBUG_NO_TAB": "Hedef sekme seçilmedi.",
+  "DEBUG_COMM_FAIL": "Sekme videosuyla iletişim kurulamadı.",
+  "EMPTY_PEERS_TITLE": "Henüz kimse yok",
+  "EMPTY_PEERS_HINT": "Başlamak için davet bağlantınızı paylaşın",
+  "EMPTY_HISTORY_TITLE": "Henüz etkinlik yok",
+  "EMPTY_HISTORY_HINT": "Geçmişi görmek için oynatın, duraklatın veya arayın",
+  "EMPTY_LOGS_TITLE": "Günlük yok",
+  "EMPTY_LOGS_HINT": "Bağlantı olayları burada görünecektir",
+  "EMPTY_ROOMS_TITLE": "Aktif oda yok",
+  "EMPTY_ROOMS_HINT": "Bir oda oluşturun veya genel odaları bulmak için yenileyin",
+  "LABEL_YOU": "Siz",
+  "ONBOARDING_DONE": "Tamamlandı!",
+  "LABEL_LOBBY_PEER_READY": "Hazır",
+  "LABEL_LOBBY_PEER_LOADING": "Yükleniyor...",
+  "LABEL_PASSWORD_PROTECTED": "Şifre Korumalı",
+  "LABEL_PEERS_COUNT": "{count} kişi",
+  "LABEL_CUSTOM_SERVER": "Özel Sunucu",
+  "BTN_STATE_CREATING": "🚀 Oda Oluşturuluyor...",
+  "NOTIF_LOBBY_CANCEL_TITLE": "KoalaSync — Bölüm Eşitlemesi Başarısız",
+  "NOTIF_LOBBY_CANCEL_MSG": "Otomatik eşitleme iptal edildi: {reason}. Manuel olarak eşitlemeniz gerekebilir.",
+  "LOBBY_CANCEL_TIMEOUT": "Zaman aşımı",
+  "LOBBY_CANCEL_TIMEOUT_RECOVERED": "Zaman aşımı (kurtarıldı)",
+  "LOBBY_CANCEL_PEERS_LEFT": "Diğer tüm bağlantılar ayrıldı",
+  "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_REVIEW": "★ Değerlendir",
+  "FOOTER_SUPPORT_PROMPT": "KoalaSync'i beğendin mi? Bir yorum bırak!",
+  "LABEL_AUDIO_PROCESSING": "Ses işleme",
+  "LABEL_AUDIO_PROCESSING_TOOLTIP": "Video oynatımına sıkıştırma gibi ses efektleri uygular",
+  "AUDIO_OPEN_SETTINGS": "Aç",
+  "NEW_FEATURE_AUDIO": "Yeni: Ses işleme — kompresörü deneyin!",
+  "AUDIO_BACK": "← Geri",
+  "AUDIO_PAGE_TITLE": "Ses ayarları",
+  "AUDIO_MASTER_TOGGLE": "Ses işleme",
+  "AUDIO_COMPRESSOR": "Kompresör",
+  "AUDIO_COMPRESSOR_ENABLE": "Etkin",
+  "AUDIO_PRESET": "Ön ayar",
+  "AUDIO_PRESET_RECOMMENDED": "Önerilen",
+  "AUDIO_PRESET_DYNAMIC_RANGE": "Dinamik aralık",
+  "AUDIO_PRESET_VOCAL_ENHANCEMENT": "Ses iyileştirme",
+  "AUDIO_PRESET_SMOOTH": "Yumuşak",
+  "AUDIO_PRESET_CUSTOM": "Özel",
+  "AUDIO_PARAM_THRESHOLD": "Eşik",
+  "AUDIO_PARAM_KNEE": "Knee",
+  "AUDIO_PARAM_RATIO": "Ratio",
+  "AUDIO_PARAM_ATTACK": "Attack",
+  "AUDIO_PARAM_RELEASE": "Release",
+  "AUDIO_EQUALIZER": "Ekolayzer",
+  "AUDIO_COMING_SOON": "Çok yakında"
+}

extension/manifest.base.json

@@ -1,8 +1,9 @@
 {
   "manifest_version": 3,
+  "default_locale": "en",
   "name": "KoalaSync",
-  "version": "1.7.2",
-  "description": "Watch party extension to synchronize video playback on YouTube, Twitch, Netflix, and HTML5 sites in real-time with friends.",
+  "version": "2.2.2",
+  "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
     "tabs",
@@ -18,7 +19,9 @@
     "default_popup": "popup.html",
     "default_icon": {
       "16": "icons/icon16.png",
+      "32": "icons/icon32.png",
       "48": "icons/icon48.png",
+      "96": "icons/icon96.png",
       "128": "icons/icon128.png"
     }
   },
@@ -35,7 +38,9 @@
   ],
   "icons": {
     "16": "icons/icon16.png",
+    "32": "icons/icon32.png",
     "48": "icons/icon48.png",
+    "96": "icons/icon96.png",
     "128": "icons/icon128.png"
   }
 }

extension/popup.html

@@ -4,6 +4,13 @@
     <meta charset="utf-8">
     <title>KoalaSync</title>
     <style>
+        @font-face {
+            font-family: 'Twemoji Country Flags';
+            unicode-range: U+1F1E6-1F1FF, U+1F3F4, U+E0062-E0063, U+E0065, U+E0067, U+E006C, U+E006E, U+E0073-E0074, U+E0077, U+E007F;
+            src: url('assets/TwemojiCountryFlags.woff2') format('woff2');
+            font-display: swap;
+        }
+
         :root {
             --bg: #0f172a;
             --card: #1e293b;
@@ -23,29 +30,55 @@
             padding: 16px;
             background: var(--bg);
             color: var(--text);
-            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+            font-family: 'Twemoji Country Flags', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
             font-size: 14px;
         }
 
+        .header-row {
+            display: flex;
+            align-items: center;
+            margin-bottom: 16px;
+        }
+
         h1 {
             font-size: 18px;
-            margin: 0 0 16px 0;
+            margin: 0;
             color: var(--accent);
             letter-spacing: 1px;
             text-transform: uppercase;
-            display: flex;
+            display: inline-flex;
             align-items: center;
-            justify-content: center;
             gap: 8px;
         }
 
         h1 img {
-            width: 24px;
-            height: 24px;
+            width: 48px;
+            height: 48px;
             object-fit: contain;
             border-radius: 4px;
         }
 
+        .popup-version {
+            margin-left: auto;
+            display: flex;
+            align-items: center;
+            gap: 4px;
+            font-size: 10px;
+            color: var(--text-muted);
+            text-decoration: none;
+            opacity: 0.5;
+            transition: opacity 0.2s, color 0.2s;
+        }
+        .popup-version:hover {
+            opacity: 1;
+            color: var(--accent);
+        }
+        .popup-version svg {
+            width: 12px;
+            height: 12px;
+            display: block;
+        }
+
         /* Tabs */
         .tabs {
             display: flex;
@@ -101,7 +134,7 @@
             font-weight: 700;
         }
 
-        input, select {
+        input, select, option {
             width: 100%;
             box-sizing: border-box;
             background: var(--card);
@@ -113,6 +146,20 @@
             font-family: inherit;
         }
 
+        @supports (appearance: base-select) {
+            #langSelector,
+            #langSelector::picker(select) {
+                appearance: base-select;
+            }
+            #langSelector::picker(select) {
+                background-color: var(--bg);
+                border: 1px solid #334155;
+                border-radius: 8px;
+                padding: 4px;
+                font-family: 'Twemoji Country Flags', inherit;
+            }
+        }
+
         input:focus {
             border-color: var(--accent);
             box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
@@ -237,17 +284,105 @@
             from { opacity: 1; }
             to { opacity: 0; transform: translateY(-10px); }
         }
+
+        @keyframes fadeSlideIn {
+            from { opacity: 0; transform: translateX(5px); }
+            to { opacity: 1; transform: translateX(0); }
+        }
+        .tab-active-animate {
+            animation: fadeSlideIn 0.15s ease-out forwards;
+        }
+
+        /* Toggle Switch CSS */
+        .toggle-switch {
+            position: relative;
+            display: inline-block;
+            width: 36px;
+            height: 20px;
+        }
+        .toggle-switch input {
+            opacity: 0;
+            width: 0;
+            height: 0;
+        }
+        .slider {
+            position: absolute;
+            cursor: pointer;
+            top: 0; left: 0; right: 0; bottom: 0;
+            background-color: #334155;
+            transition: .3s;
+            border-radius: 20px;
+        }
+        .slider:before {
+            position: absolute;
+            content: "";
+            height: 14px;
+            width: 14px;
+            left: 3px;
+            bottom: 3px;
+            background-color: #94a3b8;
+            transition: .3s;
+            border-radius: 50%;
+        }
+        input:checked + .slider {
+            background-color: var(--accent);
+        }
+        input:checked + .slider:before {
+            transform: translateX(16px);
+            background-color: white;
+        }
+        .popup-footer {
+            margin-top: 20px;
+            text-align: center;
+            border-top: 1px solid rgba(255,255,255,0.05);
+            padding-top: 10px;
+            color: var(--text-muted);
+            font-size: 10px;
+            opacity: 0.6;
+        }
+        .popup-footer a {
+            color: var(--text-muted);
+            text-decoration: none;
+            transition: color 0.2s, opacity 0.2s;
+        }
+        .popup-footer a:hover {
+            color: var(--accent);
+            opacity: 1;
+        }
+        .feature-hint {
+            display: inline-block;
+            width: 8px;
+            height: 8px;
+            border-radius: 50%;
+            background: var(--accent);
+            margin-left: 4px;
+            animation: featurePulse 2s ease-in-out infinite;
+            cursor: help;
+            vertical-align: middle;
+        }
+        @keyframes featurePulse {
+            0%, 100% { opacity: 0.4; transform: scale(1); }
+            50% { opacity: 1; transform: scale(1.3); }
+        }
     </style>
 </head>
 <body>
     <div id="toast-container"></div>
-    <h1><img src="icons/icon128.png" alt="KoalaSync Logo">KoalaSync</h1>
+    <div class="header-row">
+                    <h1 data-i18n="APP_TITLE"><img src="icons/icon128.png" alt="KoalaSync Logo">KoalaSync</h1>
+                    <a href="https://github.com/Shik3i/KoalaSync" target="_blank" class="popup-version">
+                        <svg viewBox="0 0 16 16" fill="currentColor">
+                            <path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0016 8c0-4.42-3.58-8-8-8z"/>
+                        </svg>
+                        <span id="popupVersion">v0.0.0</span>
+                    </a>
+                </div>
 
     <div class="tabs">
-        <button class="tab-btn active" data-tab="tab-room">Room</button>
-        <button class="tab-btn" data-tab="tab-sync">Sync</button>
-        <button class="tab-btn" data-tab="tab-settings">Settings</button>
-        <button class="tab-btn" data-tab="tab-dev">Dev</button>
+        <button class="tab-btn active" data-tab="tab-room" data-i18n="TAB_ROOM" data-i18n-title="TAB_ROOM_TOOLTIP" title="Room settings and connection">Room</button>
+        <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>
     </div>
 
     <!-- Room Tab -->
@@ -255,47 +390,52 @@
 
         <!-- JOIN SECTION: Visible when not in a room -->
         <div id="section-join">
+            <button id="createRoomBtn" class="primary" style="margin-bottom: 16px; padding: 14px; font-size: 15px; background: linear-gradient(135deg, #6366f1, #a855f7); box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);" data-i18n="BTN_CREATE_ROOM">+ Create New Room</button>
+            <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>Server</label>
+                <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;">Official</button>
-                    <button id="serverCustom" class="tab-btn" style="flex:1; padding:6px; font-size:11px;">Custom</button>
+                    <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" placeholder="wss://your-server:3000" style="display:none;">
+                <input type="text" id="serverUrl" data-i18n-placeholder="PLACEHOLDER_SERVER_URL" placeholder="wss://your-server:3000" style="display:none;">
             </div>
             <div class="form-group">
-                <label>Room ID</label>
-                <input type="text" id="roomId" placeholder="Leave empty to create">
+                <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">
             </div>
             <div class="form-group">
-                <label>Password (Optional)</label>
-                <input type="password" id="password" placeholder="Room password">
+                <label title="Optional password to restrict room access" data-i18n="LABEL_PASSWORD" data-i18n-title="LABEL_PASSWORD_TOOLTIP">Password (Optional)</label>
+                <input type="password" id="password" data-i18n-placeholder="PLACEHOLDER_PASSWORD" data-i18n-title="PLACEHOLDER_PASSWORD_TOOLTIP" placeholder="Room Password (optional)" title="Password for the room (leave empty if none)">
             </div>
             <div id="roomError" style="display:none; color:var(--error); font-size:11px; margin-bottom:8px; text-align:center;"></div>
-            <button id="joinBtn" class="primary">Join Room</button>
-            <button id="createRoomBtn" class="secondary" style="border: 1px solid var(--accent); color: var(--accent);">Create Random Room</button>
+            <button id="joinBtn" class="primary" data-i18n="BTN_JOIN_ROOM" data-i18n-title="BTN_JOIN_ROOM_TOOLTIP" title="Connect to the room">Join Room</button>
             
             <div style="display: flex; justify-content: space-between; align-items: center; margin-top: 1.5rem; margin-bottom: 8px;">
-                <label style="margin:0;">Public Rooms</label>
-                <button id="refreshRooms" style="background:transparent; border:none; color:var(--accent); font-size:10px; cursor:pointer;">REFRESH</button>
+                <label style="margin:0;" title="List of publicly available rooms on this server" data-i18n="LABEL_PUBLIC_ROOMS" data-i18n-title="LABEL_PUBLIC_ROOMS_TOOLTIP">Public Rooms</label>
+                <button id="refreshRooms" class="secondary" style="background:transparent; border:none; color:var(--accent); font-size:10px; cursor:pointer;" data-i18n="BTN_REFRESH" data-i18n-title="BTN_REFRESH_TOOLTIP" title="Refresh the list of public rooms">REFRESH</button>
             </div>
             <div id="publicRooms" class="info-card" style="max-height: 120px; overflow-y: auto; padding: 4px;">
-                <div style="text-align:center; color: var(--text-muted); font-size: 11px; padding: 10px;">Refreshing...</div>
+                <div style="text-align:center; color: var(--text-muted); font-size: 11px; padding: 10px;" data-i18n="PUBLIC_ROOMS_REFRESHING">Refreshing...</div>
             </div>
+                </div>
+            </details>
         </div>
 
         <!-- ACTIVE SECTION: Visible when in a room -->
         <div id="section-active" style="display:none;">
             <div class="info-card" style="margin-bottom: 20px; display: flex; justify-content: space-between; align-items: center; border-left: 4px solid var(--accent);">
                 <div>
-                    <label style="margin-bottom: 0;">Active Room</label>
+                    <label style="margin-bottom: 0;" title="The room you are currently connected to" data-i18n="LABEL_ACTIVE_ROOM" data-i18n-title="LABEL_ACTIVE_ROOM_TOOLTIP">Active Room</label>
                     <div id="activeRoomId" style="font-weight: 700; color: var(--accent); font-size: 16px; letter-spacing: 1px;">NONE</div>
                 </div>
                 <div id="activeServer" style="font-size: 10px; color: var(--text-muted); text-align: right; max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;">Official Server</div>
             </div>
 
             <div class="info-card" style="margin-bottom: 20px;">
-                <label>Invite Link</label>
+                <label title="Share this link with friends so they can join" data-i18n="LABEL_INVITE_LINK" data-i18n-title="LABEL_INVITE_LINK_TOOLTIP">Invite Link</label>
                 <div class="invite-box">
                     <input type="text" id="inviteLink" readonly>
                     <button id="copyInvite" class="secondary">📋</button>
@@ -303,138 +443,208 @@
             </div>
 
             <div style="margin-bottom: 20px;">
-                <label>Peers in Room</label>
+                <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">
-                    <div style="text-align:center; color: var(--text-muted); font-size: 12px;">No peers connected</div>
+                    <div style="text-align:center; color: var(--text-muted); font-size: 12px;" data-i18n="NO_PEERS_CONNECTED">No peers connected</div>
                 </div>
             </div>
 
-            <button id="leaveBtn" class="secondary" style="color: var(--error); border-color: var(--error);">Leave Room</button>
+            <button id="leaveBtn" class="secondary" style="color: var(--error); border-color: var(--error);" data-i18n="BTN_LEAVE_ROOM">Leave Room</button>
         </div>
     </div>
 
     <!-- Sync Tab -->
     <div id="tab-sync" class="tab-content">
+        <!-- SYNC ACTIVE: Visible when in a room -->
+        <div id="sync-active">
         <div class="form-group">
-            <label>Target Tab (Video Source)</label>
+            <label title="Choose the browser tab containing the video to sync" data-i18n="LABEL_SELECT_VIDEO" data-i18n-title="LABEL_SELECT_VIDEO_TOOLTIP">Select Video</label>
             <select id="targetTab">
-                <option value="">-- Select a Tab --</option>
+                <option value="" data-i18n="OPTION_SELECT_TAB">-- Select a Tab --</option>
             </select>
         </div>
         
-        <label>Remote Control</label>
+        <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px;">
+            <label style="margin: 0;" data-i18n="LABEL_REMOTE_CONTROL">Remote Control</label>
+            <button id="syncTabCopyInvite" title="Copy Invite Link" style="background:transparent; border: 1px solid #334155; border-radius: 6px; padding: 4px 8px; font-size: 11px; cursor:pointer; opacity:0.8; transition: opacity 0.2s; color: var(--text-muted); display: flex; align-items: center; gap: 4px; white-space: nowrap;" data-i18n="BTN_COPY_INVITE" data-i18n-title="BTN_COPY_INVITE_TOOLTIP">📋 Invite Link</button>
+        </div>
         <div style="display: flex; gap: 8px; margin-bottom: 12px;">
-            <button id="playBtn" class="primary" style="flex:1; background: var(--success);">▶ Play</button>
-            <button id="pauseBtn" class="primary" style="flex:1; background: var(--error);">⏸ Pause</button>
+            <button id="playBtn" class="primary" style="flex:1; background: var(--success);" title="Send a Play command to everyone" data-i18n="BTN_PLAY" data-i18n-title="BTN_PLAY_TOOLTIP">▶ Play</button>
+            <button id="pauseBtn" class="primary" style="flex:1; background: var(--error);" title="Send a Pause command to everyone" data-i18n="BTN_PAUSE" data-i18n-title="BTN_PAUSE_TOOLTIP">⏸ Pause</button>
         </div>
 
         <div style="display: flex; gap: 8px; margin-bottom: 15px; align-items: stretch;">
-            <button id="forceSyncBtn" class="primary" style="background: linear-gradient(135deg, #6366f1, #a855f7); flex: 1;">⚡ Force Sync</button>
-            <select id="forceSyncMode" style="width: auto; min-width: 130px; background: var(--card); border: 1px solid #334155; color: white; padding: 10px 8px; border-radius: 8px; font-size: 11px; font-family: inherit; cursor: pointer; align-self: stretch;" title="Choose sync target">
-                <option value="jump-to-others">Jump to Others</option>
-                <option value="jump-to-me">Jump to Me</option>
+            <button id="forceSyncBtn" class="primary" style="background: linear-gradient(135deg, #6366f1, #a855f7); flex: 1;" title="Force all users to sync up" data-i18n="BTN_SYNC" data-i18n-title="BTN_SYNC_TOOLTIP">⚡ SYNC</button>
+            <select id="forceSyncMode" style="flex: 1; background: var(--card); border: 1px solid #334155; color: white; padding: 10px 8px; border-radius: 8px; font-size: 11px; font-family: inherit; cursor: pointer; align-self: stretch;" title="Choose sync target" data-i18n-title="OPTION_JUMP_MODE_TOOLTIP">
+                <option value="jump-to-others" data-i18n="OPTION_JUMP_TO_OTHERS">Jump to Others</option>
+                <option value="jump-to-me" data-i18n="OPTION_JUMP_TO_ME">Jump to Me</option>
             </select>
         </div>
 
         <!-- NEW: Last Action Status Card -->
-        <label>Last Activity Status</label>
+        <label title="Shows the most recent play, pause, or seek command" data-i18n="LABEL_LAST_ACTIVITY" data-i18n-title="LABEL_LAST_ACTIVITY_TOOLTIP">Last Activity Status</label>
         <div id="lastActionCard" class="info-card" style="margin-bottom: 15px; max-height: 120px; overflow-y: auto;">
-            <div style="text-align:center; color: var(--text-muted); font-size: 10px;">No recent commands</div>
+            <div style="text-align:center; color: var(--text-muted); font-size: 10px;" data-i18n="NO_RECENT_COMMANDS">No recent commands</div>
         </div>
 
         <!-- Episode Auto-Sync Lobby Status -->
         <div id="episodeLobbyCard" class="info-card" style="display:none; margin-bottom: 15px; border-left: 4px solid var(--star); animation: fadeIn 0.3s ease-out;">
             <div style="display:flex; align-items:center; gap: 6px; margin-bottom: 6px;">
                 <span style="font-size: 16px;">⏳</span>
-                <span style="font-weight: 700; color: var(--star); font-size: 12px;">EPISODE LOBBY</span>
+                <span style="font-weight: 700; color: var(--star); font-size: 12px;" data-i18n="LOBBY_HEADER">EPISODE LOBBY</span>
             </div>
             <div id="lobbyTitle" style="font-size: 11px; color: var(--text); margin-bottom: 6px; font-weight: 600;"></div>
-            <div id="lobbyPeerStatus" style="font-size: 10px; color: var(--text-muted);"></div>
+            <div id="lobbyPeerStatus" style="font-size: 10px; color: var(--text-muted); margin-bottom: 8px;"></div>
+            <button id="cancelLobbyBtn" class="secondary" style="margin-top: 4px; padding: 6px 10px; font-size: 11px; width: auto; display: block;" title="Cancel lobby and play anyway" data-i18n="BTN_SKIP_PLAY" data-i18n-title="BTN_SKIP_PLAY_TOOLTIP">Skip & Play anyway</button>
         </div>
 
         <div id="peerListSync" class="info-card" style="display:none;"></div>
+        </div>
+        
+        <!-- SYNC INACTIVE: Visible when not in a room -->
+        <div id="sync-inactive" style="display:none; text-align: center; padding: 20px 10px;">
+            <div style="font-size: 32px; margin-bottom: 12px;">🔒</div>
+            <h3 style="margin: 0 0 8px 0; color: var(--accent); font-size: 15px;" data-i18n="LOBBY_CONNECT_FIRST">Connect to a room first</h3>
+            <p style="color: var(--text-muted); font-size: 12px; margin-bottom: 20px;" data-i18n="LOBBY_CONNECT_FIRST_DESC">You need to join a room via an invite link or create a new one to sync videos.</p>
+            <button id="syncTabCreateRoomBtn" class="primary" style="padding: 12px; font-size: 14px; background: linear-gradient(135deg, #6366f1, #a855f7); box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);" title="Create a new random room and join it" data-i18n="BTN_CREATE_ROOM_ALT" data-i18n-title="BTN_CREATE_ROOM_ALT_TOOLTIP">Create New Room</button>
+        </div>
     </div>
     
     <!-- Settings Tab -->
     <div id="tab-settings" class="tab-content">
-        <div class="form-group">
-            <label>Your Username</label>
-            <input type="text" id="username" placeholder="Anonymous Koala" maxlength="20">
+        <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;" title="Username helps others identify you." data-i18n="LABEL_USERNAME" data-i18n-title="LABEL_USERNAME_TOOLTIP">Your Username</label>
+            <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;">Filter Noise Tabs</label>
-            <input type="checkbox" id="filterNoise" style="width: auto;" checked>
+            <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;">Auto-Sync Next Episode</label>
-            <input type="checkbox" id="autoSyncNextEpisode" style="width: auto;">
+            <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;">Browser Notifications</label>
-            <input type="checkbox" id="browserNotifications" style="width: auto;">
+            <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">
+                <input type="checkbox" id="autoCopyInvite" checked>
+                <span class="slider"></span>
+            </label>
         </div>
-        
-        <div style="font-size: 11px; color: var(--text-muted); padding: 8px;">
-            <p>• Username helps others identify you.</p>
-            <p>• Noise filtering uses a blacklist to hide common non-video sites (e.g. Search, Social Media) from the Target Tab selector.</p>
-            <p>• Auto-Sync will pause and wait for all peers when an episode changes, then sync-start together.</p>
+
+        <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="Shows native system notifications when someone joins/leaves or plays/pauses." data-i18n="LABEL_NOTIFICATIONS" data-i18n-title="LABEL_NOTIFICATIONS_TOOLTIP">Browser Notifications</label>
+            <label class="toggle-switch">
+                <input type="checkbox" id="browserNotifications">
+                <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 12px; border-radius: 8px; margin-bottom: 12px; border: 1px solid #334155;">
+            <div style="display: flex; align-items: center; gap: 8px;">
+                <label id="audioProcessingLabel" style="margin-bottom: 0; cursor: help; white-space: nowrap; font-size: 13px;" data-i18n="LABEL_AUDIO_PROCESSING" data-i18n-title="LABEL_AUDIO_PROCESSING_TOOLTIP">Audio Processing</label>
+            </div>
+            <a id="audioSettingsLink" href="#" style="font-size: 11px; color: var(--accent); text-decoration: none; white-space: nowrap; background: rgba(99,102,241,0.12); padding: 5px 12px; border-radius: 6px; font-weight: 600; transition: background 0.2s;" data-i18n="AUDIO_OPEN_SETTINGS">Open</a>
+        </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;" data-i18n="LABEL_LANGUAGE" data-i18n-title="LABEL_LANGUAGE_TOOLTIP" title="Choose your preferred extension language">App Language</label>
+            <select id="langSelector" style="width: 165px; background: var(--bg); border: 1px solid #334155; color: white; padding: 6px 10px; border-radius: 8px; font-size: 13px; cursor: pointer; outline: none; font-family: inherit;">
+                <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>
         </div>
 
         <div style="margin-top: 15px; padding: 8px; border-top: 1px solid var(--card);">
-            <label>Troubleshooting</label>
-            <button id="regenId" class="secondary" style="width: 100%; font-size: 11px;">Regenerate Peer ID</button>
-            <p style="font-size: 9px; color: var(--text-muted); margin-top: 5px; text-align: center;">Use this if you see "Duplicate Identity" errors.</p>
+            <label title="Tools for fixing connection issues" data-i18n="LABEL_TROUBLESHOOTING" data-i18n-title="LABEL_TROUBLESHOOTING_TOOLTIP">Troubleshooting</label>
+            <button id="regenId" class="secondary" style="width: 100%; font-size: 11px;" title="Regenerate your internal ID and reconnect" data-i18n="BTN_REGEN_ID" data-i18n-title="BTN_REGEN_ID_TOOLTIP">Regenerate Peer ID</button>
+            <p style="font-size: 9px; color: var(--text-muted); margin-top: 5px; text-align: center;" data-i18n="REGEN_ID_DESC">Use this if you see "Duplicate Identity" errors.</p>
+            <p style="font-size: 9px; text-align: center; margin-top: 6px;"><a href="https://github.com/Shik3i/KoalaSync/issues" target="_blank" style="color: var(--accent); text-decoration: none;" data-i18n="REGEN_ID_OTHER_ISSUE">Other issue? Open a GitHub Issue</a></p>
+        </div>
+
+        <div class="popup-footer">
+            <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>
+            <span> · </span>
+            <span id="settingsVersion">v0.0.0</span>
         </div>
     </div>
 
     <!-- Dev Tab -->
     <div id="tab-dev" class="tab-content">
-        <label>Connection Status</label>
+        <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>
-            <button id="retryBtn" class="secondary" style="display:none; width: auto; padding: 4px 8px; font-size: 10px; margin: 0;">RETRY</button>
-            <button id="copyLogs" class="btn secondary" style="width: auto; padding: 4px 10px; font-size: 11px;">Copy Logs</button>
+            <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>
         </div>
 
-        <label>Video Debug Info</label>
+        <label title="Technical details about the currently selected video element" data-i18n="LABEL_VIDEO_DEBUG" data-i18n-title="LABEL_VIDEO_DEBUG_TOOLTIP">Video Debug Info</label>
         <div id="videoDebug" class="info-card" style="font-size: 10px; font-family: monospace; color: var(--text-muted); max-height: 250px; overflow-y: auto; line-height: 1.4;">
             No tab selected or video detected.
         </div>
 
         <div style="display:flex; justify-content:space-between; align-items:center; margin-bottom: 8px;">
-            <label>Full Action History</label>
+            <label title="Chronological log of all sync commands in the room" data-i18n="LABEL_HISTORY" data-i18n-title="LABEL_HISTORY_TOOLTIP">Full Action History</label>
         </div>
         <div id="historyList" class="info-card" style="max-height: 120px; overflow-y: auto; font-size: 10px; margin-bottom: 15px;">
-            <div style="text-align:center; color: var(--text-muted); font-size: 11px;">No activity yet</div>
+            <div style="text-align:center; color: var(--text-muted); font-size: 11px;" data-i18n="HISTORY_EMPTY">No activity yet</div>
         </div>
 
         <div style="display:flex; justify-content:space-between; align-items:center; margin-bottom: 8px;">
-            <label>Logs (Last 50)</label>
-            <button id="clearLogs" style="background:transparent; border:none; color:var(--accent); font-size:10px; cursor:pointer;">CLEAR</button>
+            <label title="Technical connection logs for debugging" data-i18n="LABEL_LOGS" data-i18n-title="LABEL_LOGS_TOOLTIP">Logs (Last 50)</label>
+            <button id="clearLogs" style="background:transparent; border:none; color:var(--accent); font-size:10px; cursor:pointer;" title="Clear log output" data-i18n="BTN_CLEAR" data-i18n-title="BTN_CLEAR_TOOLTIP">CLEAR</button>
         </div>
         <div id="logList"></div>
         
-        <div style="margin-top: 20px; text-align: center; border-top: 1px solid rgba(255,255,255,0.05); padding-top: 10px;">
-            <a href="https://github.com/Shik3i/KoalaSync" target="_blank" style="color: var(--text-muted); text-decoration: none; font-size: 10px; opacity: 0.6; display: block;">GitHub Repository</a>
-            <div id="appVersion" style="color: var(--text-muted); font-size: 9px; opacity: 0.4; margin-top: 4px;">v0.0.0</div>
+        <div class="popup-footer">
+            <a href="https://github.com/Shik3i/KoalaSync" target="_blank" style="color: var(--text-muted); text-decoration: none; font-size: 10px; opacity: 0.6; display: block;" data-i18n="LABEL_GITHUB">GitHub Repository</a>
+            <div style="margin-top: 4px;">
+                <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>
+                <span> · </span>
+                <span id="appVersion">v0.0.0</span>
+            </div>
         </div>
     </div>
 
     <script src="popup.js" type="module"></script>
 
     <!-- Onboarding Overlay -->
-    <div id="onboarding-overlay" style="display:none; position:fixed; inset:0; background:rgba(0,0,0,0.7); z-index:1000; align-items:center; justify-content:center;">
-        <div id="onboarding-card" style="background:var(--card); padding:24px; border-radius:16px; max-width:280px; width:90%; text-align:center; box-shadow:0 8px 32px rgba(0,0,0,0.5);">
-            <div id="onboarding-icon" style="font-size:48px; margin-bottom:12px;">\u{1F44B}</div>
+    <div id="onboarding-overlay" style="display:none; position:fixed; inset:0; background:rgba(0,0,0,0.5); backdrop-filter: blur(2px); z-index:1000; align-items:flex-end; justify-content:center; padding-bottom: 20px;">
+        <div id="onboarding-card" style="background:var(--card); padding:24px; border-radius:16px; max-width:280px; width:90%; text-align:center; box-shadow:0 8px 32px rgba(0,0,0,0.5); ">
+            <div id="onboarding-icon" style="font-size:48px; margin-bottom:12px;">👋</div>
             <h2 id="onboarding-title" style="color:var(--accent); margin:0 0 8px; font-size:16px;">Welcome to KoalaSync!</h2>
             <p id="onboarding-text" style="color:var(--text-muted); font-size:13px; margin:0 0 16px; line-height:1.4;">Let's get you started.</p>
             <div style="display:flex; gap:8px; justify-content:center;">
-                <button id="onboarding-skip" class="secondary" style="width:auto; padding:8px 16px;">Skip</button>
-                <button id="onboarding-next" class="primary" style="width:auto; padding:8px 16px;">Next</button>
+                <button id="onboarding-skip" class="secondary" style="width:auto; padding:8px 16px;" title="Skip the tutorial" data-i18n="BTN_ONBOARDING_SKIP" data-i18n-title="BTN_ONBOARDING_SKIP_TOOLTIP">Skip</button>
+                <button id="onboarding-next" class="primary" style="width:auto; padding:8px 16px;" title="Go to next step" data-i18n="BTN_ONBOARDING_NEXT" data-i18n-title="BTN_ONBOARDING_NEXT_TOOLTIP">Next</button>
             </div>
             <div id="onboarding-dots" style="margin-top:12px; display:flex; gap:6px; justify-content:center;"></div>
         </div>

package.json

@@ -1,16 +1,20 @@
 {
   "name": "koalasync",
-  "version": "1.7.2",
+  "version": "2.2.2",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "scripts": {
     "build:extension": "node scripts/build-extension.js",
     "lint": "eslint .",
-    "lint:fix": "eslint . --fix"
+    "lint:fix": "eslint . --fix",
+    "verify": "node scripts/verify-release.mjs"
   },
   "devDependencies": {
     "archiver": "^7.0.1",
+    "esbuild": "^0.28.0",
     "eslint": "^10.4.0",
-    "fs-extra": "^11.2.0"
+    "fs-extra": "^11.2.0",
+    "sharp": "^0.34.5",
+    "svgo": "^4.0.1"
   }
 }

scripts/build-extension.js

@@ -22,7 +22,7 @@ if (!fs.existsSync(extSharedDir)) {
   fs.mkdirSync(extSharedDir, { recursive: true });
 }
 
-const sharedFiles = ['constants.js', 'blacklist.js', 'README.md'];
+const sharedFiles = ['constants.js', 'blacklist.js', 'names.js', 'README.md'];
 for (const file of sharedFiles) {
   const src = path.join(masterSharedDir, file);
   const dest = path.join(extSharedDir, file);
@@ -31,7 +31,7 @@ for (const file of sharedFiles) {
   }
   fs.copyFileSync(src, dest);
 }
-console.log('✓ constants.js, blacklist.js, and README.md synced to extension/shared/');
+console.log('✓ constants.js, blacklist.js, names.js, and README.md synced to extension/shared/');
 
 // Read the base manifest
 const baseManifest = JSON.parse(fs.readFileSync(baseManifestPath, 'utf8'));

scripts/test-audio-settings.mjs

@@ -0,0 +1,98 @@
+#!/usr/bin/env node
+
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import path from 'node:path';
+import vm from 'node:vm';
+import { fileURLToPath } from 'node:url';
+
+const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
+const sourcePath = path.join(repoRoot, 'extension/audio-options.js');
+const source = fs.readFileSync(sourcePath, 'utf8')
+    .replace("import { loadLocale, translateDOM, getSystemLanguage } from './i18n.js';", '')
+    .replace(/init\(\)\.catch[\s\S]*?;\n?$/, '');
+
+function makeInput(overrides = {}) {
+    return {
+        checked: false,
+        value: '',
+        dataset: {},
+        addEventListener() {},
+        ...overrides
+    };
+}
+
+const rows = [
+    ['threshold', '-60', '0', '1', false],
+    ['knee', '0', '40', '1', false],
+    ['ratio', '1', '20', '0.5', false],
+    ['attack', '0', '1', '0.001', true],
+    ['release', '0', '1', '0.005', true]
+].map(([param, min, max, step, ms]) => {
+    const range = makeInput({ value: '0', min, max, step });
+    const number = makeInput({ value: '0', min: ms ? '0' : min, max: ms ? '1000' : max, step, dataset: ms ? { msInput: 'true' } : {} });
+    return {
+        dataset: { param },
+        querySelector(selector) {
+            return selector === 'input[type="range"]' ? range : number;
+        }
+    };
+});
+
+const sandbox = {
+    console,
+    loadLocale: async () => {},
+    translateDOM: () => {},
+    getSystemLanguage: () => 'en',
+    chrome: {
+        storage: {
+            sync: {
+                get: async () => ({}),
+                set: () => {},
+            },
+            local: {
+                get: async () => ({}),
+                set: () => {},
+            },
+            onChanged: {
+                addListener: () => {}
+            }
+        }
+    },
+    document: {
+        getElementById: () => makeInput(),
+        querySelectorAll: (selector) => selector === '.control-row' ? rows : [makeInput({ value: 'recommended' })]
+    },
+    setTimeout,
+    clearTimeout
+};
+
+vm.createContext(sandbox);
+vm.runInContext(`${source}
+globalThis.__audioSettingsTest = {
+    mergeAudioSettings,
+    getParamValue,
+    setCustomParam,
+    get currentSettings() { return currentSettings; }
+};`, sandbox, { filename: sourcePath });
+
+const helpers = sandbox.__audioSettingsTest;
+
+assert.doesNotThrow(() => helpers.mergeAudioSettings(null), 'mergeAudioSettings tolerates null storage values');
+assert.doesNotThrow(() => helpers.mergeAudioSettings('bad'), 'mergeAudioSettings tolerates non-object storage values');
+
+assert.equal(helpers.getParamValue('threshold', '-999'), -60, 'threshold clamps to minimum');
+assert.equal(helpers.getParamValue('threshold', '999'), 0, 'threshold clamps to maximum');
+assert.equal(helpers.getParamValue('knee', '-1'), 0, 'knee clamps to minimum');
+assert.equal(helpers.getParamValue('knee', '100'), 40, 'knee clamps to maximum');
+assert.equal(helpers.getParamValue('ratio', '0'), 1, 'ratio clamps to minimum');
+assert.equal(helpers.getParamValue('ratio', '999'), 20, 'ratio clamps to maximum');
+assert.equal(helpers.getParamValue('attack', '-1', true), 0, 'attack ms input clamps to minimum seconds');
+assert.equal(helpers.getParamValue('attack', '5000', true), 1, 'attack ms input clamps to maximum seconds');
+assert.equal(helpers.getParamValue('release', '-1', true), 0, 'release ms input clamps to minimum seconds');
+assert.equal(helpers.getParamValue('release', '5000', true), 1, 'release ms input clamps to maximum seconds');
+
+helpers.setCustomParam('threshold', 999);
+assert.equal(helpers.currentSettings.compressor.customParams.threshold, 0, 'setCustomParam stores clamped values');
+
+console.log('audio settings tests passed');