fix(player): 收紧图片与快速切集资源占用

lib/pages/player/player_view.dart

@@ -353,6 +353,28 @@ class _PlayerPageState extends State<PlayerPage>
     );
   }
 
+  Future<void> _selectPage(int index) async {
+    await logic.requestEpisodeSelection(index);
+    if (!mounted || logic.session.currentIndex != index) return;
+    await logic.session.preloadSettled;
+    if (!mounted || logic.session.currentIndex != index) return;
+    _logResourceWatermark();
+  }
+
+  void _logResourceWatermark() {
+    if (!kDebugMode) return;
+    final imageCache = PaintingBinding.instance.imageCache;
+    debugPrint(
+      '[player-resources] '
+      'slots=${logic.session.livePlayerCount} '
+      'warmNext=${logic.session.preloadedIndex ?? '-'} '
+      'warmPrevious=${logic.session.previousPreloadedIndex ?? '-'} '
+      'sprites=${_spriteAxisService.spriteCacheSize} '
+      'imageCacheBytes=${imageCache.currentSizeBytes} '
+      'imageCacheCount=${imageCache.currentSize}',
+    );
+  }
+
   void _setScrubbing(bool value) {
     if (!mounted) return;
     if (_scrubbing == value) return;
@@ -507,7 +529,7 @@ class _PlayerPageState extends State<PlayerPage>
             onPageChanged: (position) {
               final index = indices[position];
               widget.onDramaChanged?.call(logic.queue.entryAt(index).drama);
-              unawaited(logic.selectEpisode(index));
+              unawaited(_selectPage(index));
               if (position >= indices.length - 3) {
                 final loadMore = widget.onLoadMore;
                 if (loadMore != null) unawaited(loadMore());