fix(client): 修正 ChangeNotifier 监听生命周期

lib/pages/player/player_logic.dart

@@ -69,6 +69,9 @@ class PlayerLogic extends ChangeNotifier {
   VideoPlayerPort? trackedPlayer;
   Episode? trackedEpisode;
   Drama? trackedDrama;
+  int? _trackedPlayerIndex;
+  bool _completionHandled = false;
+  bool _completionProgressSaved = false;
   DateTime lastProgressWrite = DateTime.fromMillisecondsSinceEpoch(0);
 
   /// 进度上报节流：契约建议每 10 秒一次
@@ -317,6 +320,7 @@ class PlayerLogic extends ChangeNotifier {
     unawaited(saveCurrentProgress());
     final previous = session;
     sessionEpisodes = List<Episode>.of(nextEpisodes);
+    _detachTrackedPlayerListener();
     trackedPlayer = null;
     trackedEpisode = null;
     trackedDrama = null;
@@ -601,6 +605,7 @@ class PlayerLogic extends ChangeNotifier {
     _disposed = true;
     pictureInPicture.setStateListener(null);
     unawaited(saveCurrentProgress());
+    _detachTrackedPlayerListener();
     if (_started) {
       session.setRouteVisible(false);
       cancelScrub();
@@ -696,46 +701,66 @@ class PlayerLogic extends ChangeNotifier {
     await player.controller.setVolume(muted ? 0 : 1);
     await player.controller.setPlaybackSpeed(playbackSpeed);
     if (session.active != player) return;
+    _detachTrackedPlayerListener();
     trackedPlayer = player;
     trackedEpisode = episode;
     trackedDrama = drama;
+    _trackedPlayerIndex = index;
+    _completionHandled = false;
+    _completionProgressSaved = false;
     lastProgressWrite = DateTime.now();
-    var completionHandled = false;
-    var completionProgressSaved = false;
-    player.controller.addListener(() {
-      if (session.active != player) return;
-      final snapshot = _readPlaybackSnapshot(player);
-      if (snapshot == null) return;
-      _cachePlaybackPosition(drama, episode, snapshot);
-      if (snapshot.completed && !completionProgressSaved) {
-        completionProgressSaved = true;
-        unawaited(
-          queueProgress(
-            drama,
-            episode,
-            snapshot.duration,
-            duration: snapshot.duration,
-            finished: true,
-          ),
-        );
-      }
-      if (!completionHandled &&
-          snapshot.completed &&
-          session.canAutoAdvance &&
-          session.currentIndex == index) {
-        completionHandled = true;
-        unawaited(advanceAfterEnd(player, index));
-      }
-      if (!shouldReportProgress(DateTime.now())) return;
+    player.controller.addListener(_handleTrackedPlayerChanged);
+  }
+
+  void _detachTrackedPlayerListener() {
+    trackedPlayer?.controller.removeListener(_handleTrackedPlayerChanged);
+    _trackedPlayerIndex = null;
+  }
+
+  void _handleTrackedPlayerChanged() {
+    if (_disposed) return;
+    final player = trackedPlayer;
+    final episode = trackedEpisode;
+    final drama = trackedDrama;
+    final index = _trackedPlayerIndex;
+    if (player == null ||
+        episode == null ||
+        drama == null ||
+        index == null ||
+        session.active != player) {
+      return;
+    }
+    final snapshot = _readPlaybackSnapshot(player);
+    if (snapshot == null) return;
+    _cachePlaybackPosition(drama, episode, snapshot);
+    if (snapshot.completed && !_completionProgressSaved) {
+      _completionProgressSaved = true;
       unawaited(
         queueProgress(
           drama,
           episode,
-          snapshot.position,
+          snapshot.duration,
           duration: snapshot.duration,
+          finished: true,
         ),
       );
-    });
+    }
+    if (!_completionHandled &&
+        snapshot.completed &&
+        session.canAutoAdvance &&
+        session.currentIndex == index) {
+      _completionHandled = true;
+      unawaited(advanceAfterEnd(player, index));
+    }
+    if (!shouldReportProgress(DateTime.now())) return;
+    unawaited(
+      queueProgress(
+        drama,
+        episode,
+        snapshot.position,
+        duration: snapshot.duration,
+      ),
+    );
   }
 
   Future<void> advanceAfterEnd(VideoPlayerPort player, int index) async {

lib/pages/player/widgets/comment_composer_sheet.dart

@@ -79,6 +79,15 @@ class _CommentComposerSheetState extends State<CommentComposerSheet> {
     _trackKeyboardInset(_keyboardHeight(context));
   }
 
+  @override
+  void didUpdateWidget(covariant CommentComposerSheet oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.controller != widget.controller) {
+      oldWidget.controller.removeListener(_onControllerChanged);
+      widget.controller.addListener(_onControllerChanged);
+    }
+  }
+
   Future<void> _prepareInput() async {
     if (_isAndroid) {
       await _keyboardInset.start();