v1.8.10: fix description length, solo peer detection, tab-close peer notify, lastHeartbeat guard, time interpolation stale guard

extension/background.js

@@ -706,7 +706,9 @@ function handleServerEvent(event, data) {
                             if (!ignoreStatus) {
                                 peer.playbackState = data.playbackState !== undefined ? data.playbackState : peer.playbackState;
                                 peer.currentTime = data.currentTime !== undefined ? data.currentTime : peer.currentTime;
-                                peer.lastHeartbeat = Date.now();
+                                if (data.playbackState !== undefined || data.currentTime !== undefined) {
+                                    peer.lastHeartbeat = Date.now();
+                                }
                             }
                         } else {
                             // Migration: replace string peer with normalized object
@@ -1169,7 +1171,8 @@ async function handleAsyncMessage(message, sender, sendResponse) {
             addToHistory(message.action, 'You');
             
             const isNonEssentialEvent = message.action === EVENTS.PLAY || message.action === EVENTS.PAUSE || message.action === EVENTS.SEEK;
-            const hasOtherPeers = currentRoom && Array.isArray(currentRoom.peers) && currentRoom.peers.length > 0;
+            const otherCount = currentRoom && Array.isArray(currentRoom.peers) ? currentRoom.peers.filter(p => (typeof p === 'object' ? p.peerId : p) !== peerId).length : 0;
+            const hasOtherPeers = otherCount > 0;
             
             if (isNonEssentialEvent && !hasOtherPeers) {
                 sendResponse({ status: 'ok_solo' });
@@ -1384,11 +1387,41 @@ async function handleAsyncMessage(message, sender, sendResponse) {
 // Tab removal listener
 chrome.tabs.onRemoved.addListener((tabId) => {
     if (tabId === currentTabId) {
+        const wasInRoom = !!currentRoom;
         currentTabId = null;
         currentTabTitle = null;
         chrome.storage.session.set({ currentTabId: null, currentTabTitle: null });
         updateBadgeStatus();
         addLog('Target tab closed.', 'warn');
+
+        if (wasInRoom) {
+            const roomAtClose = currentRoom;
+            getSettings().then(settings => {
+                if (currentRoom !== roomAtClose) return;
+
+                emit(EVENTS.PEER_STATUS, {
+                    peerId,
+                    playbackState: 'paused',
+                    currentTime: null,
+                    mediaTitle: null,
+                    username: settings.username,
+                    tabTitle: null
+                });
+
+                if (currentRoom && Array.isArray(currentRoom.peers)) {
+                    const me = currentRoom.peers.find(p => (p.peerId || p) === peerId);
+                    if (me && typeof me === 'object') {
+                        me.playbackState = 'paused';
+                        me.currentTime = null;
+                        me.mediaTitle = null;
+                        me.tabTitle = null;
+                        me.lastHeartbeat = Date.now();
+                        if (storageInitialized) chrome.storage.session.set({ currentRoom });
+                        chrome.runtime.sendMessage({ type: 'PEER_UPDATE', peers: currentRoom.peers }).catch(() => {});
+                    }
+                }
+            }).catch(() => {});
+        }
     }
 });
 

extension/manifest.base.json

@@ -1,8 +1,8 @@
 {
   "manifest_version": 3,
   "name": "KoalaSync",
-  "version": "1.8.8",
-  "description": "Watch party extension to synchronize video playback on YouTube, Twitch, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
+  "version": "1.8.10",
+  "description": "Synchronize video playback on YouTube, Netflix, Emby, Jellyfin, and any HTML5 site in real-time with friends.",
   "permissions": [
     "storage",
     "tabs",

extension/popup.js

@@ -334,7 +334,9 @@ function startInterpolation() {
             const peer = activePeers.find(p => p.peerId === peerId);
             if (peer && peer.playbackState === 'playing' && peer.currentTime != null && peer.lastHeartbeat) {
                 const elapsed = (Date.now() - peer.lastHeartbeat) / 1000;
-                el.textContent = formatTime(peer.currentTime + elapsed);
+                if (elapsed < 45) {
+                    el.textContent = formatTime(peer.currentTime + elapsed);
+                }
             }
         });
     }, 1000);
@@ -477,7 +479,9 @@ function updatePeerList(peers) {
                 let displayTime = p.currentTime;
                 if (p.playbackState === 'playing' && p.lastHeartbeat && p.currentTime != null) {
                     const elapsed = (Date.now() - p.lastHeartbeat) / 1000;
-                    displayTime += elapsed;
+                    if (elapsed < 45) {
+                        displayTime += elapsed;
+                    }
                 }
                 timeSpan.textContent = formatTime(displayTime);
                 statusLine.appendChild(timeSpan);
@@ -1129,6 +1133,11 @@ elements.playBtn.addEventListener('click', () => {
         type: 'CONTENT_EVENT',
         action: EVENTS.PLAY,
         payload: {}
+    }, (response) => {
+        if (response && response.status === 'ok_solo') {
+            elements.playBtn.textContent = '▶ Play';
+            elements.playBtn.disabled = false;
+        }
     });
     // Safety reset: restore button after 2.5s in case no peers respond
     setTimeout(() => {
@@ -1150,6 +1159,11 @@ elements.pauseBtn.addEventListener('click', () => {
         type: 'CONTENT_EVENT',
         action: EVENTS.PAUSE,
         payload: {}
+    }, (response) => {
+        if (response && response.status === 'ok_solo') {
+            elements.pauseBtn.textContent = '⏸ Pause';
+            elements.pauseBtn.disabled = false;
+        }
     });
     // Safety reset: restore button after 2.5s in case no peers respond
     setTimeout(() => {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "koalasync",
-  "version": "1.8.8",
+  "version": "1.8.9",
   "description": "KoalaSync Build Scripts",
   "private": true,
   "scripts": {

website/version.json

@@ -1,4 +1,4 @@
 {
-  "version": "1.8.8",
-  "date": "2026-05-26T00:34:04Z"
+  "version": "1.8.9",
+  "date": "2026-05-26T01:07:16Z"
 }