fix: reset WS subtitle state and parsed cues on media path change

- Clear activeParsedSubtitleCues, activeParsedSubtitleSource, lastObservedTimePos
- Broadcast reset payload to subtitleWsService and annotationSubtitleWsService
- Extend wiring test to cover new reset fields and WS broadcasts

src/main.ts

@@ -4247,11 +4247,23 @@ const {
       const normalizedPath = path.trim();
       const previousPath = appState.currentMediaPath?.trim() || null;
       if ((normalizedPath || null) !== previousPath) {
+        const resetSubtitlePayload = { text: '', tokens: null };
+        const frequencyDictionary = getResolvedConfig().subtitleStyle.frequencyDictionary;
+        const frequencyOptions = {
+          enabled: frequencyDictionary.enabled,
+          topX: frequencyDictionary.topX,
+          mode: frequencyDictionary.mode,
+        };
         autoplaySubtitlePrimedMediaPath = null;
+        lastObservedTimePos = 0;
         appState.currentSubText = '';
         appState.currentSubAssText = '';
         appState.currentSubtitleData = null;
-        broadcastToOverlayWindows('subtitle:set', { text: '', tokens: null });
+        appState.activeParsedSubtitleCues = [];
+        appState.activeParsedSubtitleSource = null;
+        broadcastToOverlayWindows('subtitle:set', resetSubtitlePayload);
+        subtitleWsService.broadcast(resetSubtitlePayload, frequencyOptions);
+        annotationSubtitleWsService.broadcast(resetSubtitlePayload, frequencyOptions);
       }
       autoplayReadyGate.invalidatePendingAutoplayReadyFallbacks();
       currentMediaTokenizationGate.updateCurrentMediaPath(path);

src/main/main-wiring.test.ts

@@ -31,7 +31,12 @@ test('media path changes clear rendered subtitle state', () => {
   assert.match(actionBlock, /appState\.currentSubText = '';/);
   assert.match(actionBlock, /appState\.currentSubAssText = '';/);
   assert.match(actionBlock, /appState\.currentSubtitleData = null;/);
+  assert.match(actionBlock, /appState\.activeParsedSubtitleCues = \[\];/);
+  assert.match(actionBlock, /appState\.activeParsedSubtitleSource = null;/);
+  assert.match(actionBlock, /lastObservedTimePos = 0;/);
   assert.match(actionBlock, /broadcastToOverlayWindows\('subtitle:set',/);
+  assert.match(actionBlock, /subtitleWsService\.broadcast\(/);
+  assert.match(actionBlock, /annotationSubtitleWsService\.broadcast\(/);
   assert.ok(
     actionBlock.indexOf('appState.currentSubtitleData = null;') <
       actionBlock.indexOf("broadcastToOverlayWindows('subtitle:set'"),