fix(watch): resolve watch state per item at cards and playback open

Cards consult the hierarchy-aware store so container marks flip episode
rows instantly and a stale per-episode patch can no longer shadow a newer
show/season mark; playback opens with the session-fresh resume offset.

lib/screens/playlist/playlist_item_card.dart

@@ -49,9 +49,7 @@ class PlaylistItemCard extends StatefulWidget {
 class _PlaylistItemCardState extends State<PlaylistItemCard> with ContextMenuTapMixin<PlaylistItemCard> {
   MediaItem _effectiveItem(BuildContext context) {
     try {
-      final patch = context.select<WatchStateStore, WatchStatePatch?>(
-        (provider) => provider.patchForGlobalKey(widget.item.globalKey),
-      );
+      final patch = context.select<WatchStateStore, WatchStatePatch?>((store) => store.patchForItem(widget.item));
       return WatchStateStore.applyPatch(widget.item, patch);
     } on ProviderNotFoundException {
       return widget.item;