fix(player): 修复详情往返播放位置丢失

test/player/player_open_detail_test.dart

@@ -13,6 +13,7 @@ import 'package:fruitshorts/core/data/repositories/watch_history_repository.dart
 import 'package:fruitshorts/core/data/services/android_picture_in_picture.dart';
 import 'package:fruitshorts/core/data/services/catalog_controller.dart';
 import 'package:fruitshorts/core/data/services/favorite_controller.dart';
+import 'package:fruitshorts/core/data/services/playback_position_cache.dart';
 import 'package:fruitshorts/core/data/services/playback_session.dart';
 import 'package:fruitshorts/core/data/services/video_player_port.dart';
 import 'package:fruitshorts/core/platform/haptics.dart';
@@ -35,12 +36,14 @@ void main() {
       final history = FakeWatchHistory();
       final playback = FakePlaybackRepository();
       final catalog = CatalogController(FakeCatalogRepository(dramas: [drama]));
+      final positionCache = PlaybackPositionCache();
       final favorites = FavoriteController(
         InMemoryFavoriteRepository(saved: {drama.id}, cards: [drama]),
       );
       final logic = PlayerLogic(
         history: history,
         playback: playback,
+        positionCache: positionCache,
         pictureInPicture: AndroidPictureInPicture(
           channel: const MethodChannel('test/player_open_detail/pip'),
         ),
@@ -74,6 +77,7 @@ void main() {
           providers: [
             Provider<WatchHistoryRepository>.value(value: history),
             Provider<PlaybackRepository>.value(value: playback),
+            Provider<PlaybackPositionCache>.value(value: positionCache),
             ChangeNotifierProvider<CatalogController>.value(value: catalog),
             ChangeNotifierProvider<FavoriteController>.value(value: favorites),
             Provider<Haptics>.value(value: FakeHaptics()),
@@ -104,7 +108,11 @@ void main() {
       expect(player.pauses, 1);
       expect(player.plays, playsBefore);
       expect(tracked.controller.value.position, const Duration(seconds: 37));
-      expect(history.writes, isEmpty);
+      expect(history.writes, ['signal-1|37000|false']);
+      expect(
+        positionCache.read('signal-1', dramaId: 'signal')?.position,
+        const Duration(seconds: 37),
+      );
 
       await tester.pageBack();
       await tester.pump();
@@ -117,7 +125,10 @@ void main() {
       expect(logic.session.userWantsPlay, isTrue);
       expect(player.plays, playsBefore + 1);
       expect(tracked.controller.value.position, const Duration(seconds: 37));
-      expect(history.writes, ['signal-1|37000|false']);
+      expect(history.writes, [
+        'signal-1|37000|false',
+        'signal-1|37000|false',
+      ]);
 
       logic
         ..trackedPlayer = null