Fix YouTube playback PR review issues

src/main/runtime/mpv-client-event-bindings.test.ts

@@ -76,6 +76,27 @@ test('mpv connection handler quits standalone youtube playback even after overla
   assert.deepEqual(calls, ['presence-refresh', 'report-stop', 'schedule', 'quit']);
 });
 
+test('mpv connection handler keeps overlay-initialized non-youtube sessions alive', () => {
+  const calls: string[] = [];
+  const handler = createHandleMpvConnectionChangeHandler({
+    reportJellyfinRemoteStopped: () => calls.push('report-stop'),
+    refreshDiscordPresence: () => calls.push('presence-refresh'),
+    syncOverlayMpvSubtitleSuppression: () => calls.push('sync-overlay-mpv-sub'),
+    hasInitialPlaybackQuitOnDisconnectArg: () => true,
+    isOverlayRuntimeInitialized: () => true,
+    shouldQuitOnDisconnectWhenOverlayRuntimeInitialized: () => false,
+    isQuitOnDisconnectArmed: () => true,
+    scheduleQuitCheck: () => {
+      calls.push('schedule');
+    },
+    isMpvConnected: () => false,
+    quitApp: () => calls.push('quit'),
+  });
+
+  handler({ connected: false });
+  assert.deepEqual(calls, ['presence-refresh', 'report-stop']);
+});
+
 test('mpv subtitle timing handler ignores blank subtitle lines', () => {
   const calls: string[] = [];
   const handler = createHandleMpvSubtitleTimingHandler({

src/main/runtime/youtube-playback-launch.test.ts

@@ -36,6 +36,32 @@ test('prepare youtube playback treats matching video IDs as already loaded', asy
   assert.deepEqual(commands, []);
 });
 
+test('prepare youtube playback does not mark matching target ready until tracks exist', async () => {
+  const commands: Array<Array<string>> = [];
+  let requestCount = 0;
+  const prepare = createPrepareYoutubePlaybackInMpvHandler({
+    requestPath: async () => {
+      requestCount += 1;
+      return 'https://www.youtube.com/watch?v=abc123';
+    },
+    requestProperty: async (name) => {
+      if (name !== 'track-list') return null;
+      return requestCount >= 3 ? [{ type: 'video', id: 1 }] : [];
+    },
+    sendMpvCommand: (command) => commands.push(command),
+    wait: createWaitStub(),
+  });
+
+  const ok = await prepare({
+    url: 'https://www.youtube.com/watch?v=abc123',
+    timeoutMs: 1500,
+    pollIntervalMs: 1,
+  });
+
+  assert.equal(ok, true);
+  assert.deepEqual(commands, []);
+});
+
 test('prepare youtube playback replaces media and waits for path switch', async () => {
   const commands: Array<Array<string>> = [];
   const observedPaths = [

src/main/runtime/youtube-playback-launch.ts

@@ -95,16 +95,27 @@ export function createPrepareYoutubePlaybackInMpvHandler(deps: YoutubePlaybackLa
       // Ignore transient path request failures and continue with bootstrap commands.
     }
 
-    if (pathMatchesYoutubeTarget(previousPath, targetUrl)) {
-      return true;
+    const alreadyTarget = pathMatchesYoutubeTarget(previousPath, targetUrl);
+    if (alreadyTarget) {
+      if (!deps.requestProperty) {
+        return true;
+      }
+      try {
+        const trackList = await deps.requestProperty('track-list');
+        if (hasPlayableMediaTracks(trackList)) {
+          return true;
+        }
+      } catch {
+        // Keep polling; mpv can report the target path before tracks are ready.
+      }
+    } else {
+      deps.sendMpvCommand(['set_property', 'pause', 'yes']);
+      deps.sendMpvCommand(['set_property', 'sub-auto', 'no']);
+      deps.sendMpvCommand(['set_property', 'sid', 'no']);
+      deps.sendMpvCommand(['set_property', 'secondary-sid', 'no']);
+      deps.sendMpvCommand(['loadfile', targetUrl, 'replace']);
     }
 
-    deps.sendMpvCommand(['set_property', 'pause', 'yes']);
-    deps.sendMpvCommand(['set_property', 'sub-auto', 'no']);
-    deps.sendMpvCommand(['set_property', 'sid', 'no']);
-    deps.sendMpvCommand(['set_property', 'secondary-sid', 'no']);
-    deps.sendMpvCommand(['loadfile', targetUrl, 'replace']);
-
     const deadline = now() + timeoutMs;
     while (now() < deadline) {
       await deps.wait(pollIntervalMs);