fix(player): 观看全集进入后自动播放

test/player/player_fullscreen_test.dart

@@ -229,7 +229,7 @@ void main() {
     expect(find.byKey(const Key('recommend-top-nav')), findsOneWidget);
   });
 
-  testWidgets('should_show_one_paused_overlay_when_entering_full_player', (
+  testWidgets('should_autoplay_full_player_and_restore_paused_feed', (
     tester,
   ) async {
     final factory = _RouteVideoFactory();
@@ -245,7 +245,9 @@ void main() {
     await tester.pumpAndSettle();
 
     expect(_fullPlayerFinder(), findsOneWidget);
-    expect(find.byKey(const Key('player-play-toggle')), findsOneWidget);
+    final fullLogic = _pageLogic(tester, _fullPlayerFinder());
+    expect(fullLogic.session.userWantsPlay, isTrue);
+    expect(find.byKey(const Key('player-play-toggle')), findsNothing);
     expect(
       find.byKey(const Key('home-feed-center-play')).hitTestable(),
       findsNothing,
@@ -519,6 +521,37 @@ void main() {
     expect(find.byKey(const Key('progress-inactive')), findsOneWidget);
   });
 
+  testWidgets('should_auto_play_full_player_when_feed_is_paused', (
+    tester,
+  ) async {
+    await _pumpApp(tester, playerFactory: (_) => _RecordingPlayer());
+    await tester.tap(find.byKey(const Key('tab-recommend')));
+    await tester.pumpAndSettle();
+
+    final feedPage = find.byKey(const Key('recommend-feed-player'));
+    final feedLogic = _pageLogic(tester, feedPage);
+    await feedLogic.session.preloadSettled;
+    feedLogic.session.setUserWantsPlay(false);
+    await feedLogic.session.playbackSettled;
+    await tester.pump();
+    expect(feedLogic.session.userWantsPlay, isFalse);
+
+    await tester.tap(find.byKey(const Key('home-feed-full-series')));
+    await tester.pumpAndSettle();
+
+    final fullLogic = _pageLogic(tester, _fullPlayerFinder());
+    final fullPlayer = fullLogic.session.active! as _RecordingPlayer;
+    expect(fullLogic.session, isNot(same(feedLogic.session)));
+    expect(fullLogic.session.userWantsPlay, isTrue);
+    expect(fullPlayer.playCalls, greaterThan(0));
+    expect(fullPlayer.playing, isTrue);
+
+    await tester.tap(find.byKey(const Key('player-back')).hitTestable());
+    await tester.pumpAndSettle();
+    expect(feedLogic.session.userWantsPlay, isFalse);
+    expect(feedLogic.session.activeSlotPlaying, isFalse);
+  });
+
   testWidgets('should_only_show_progress_buffer_after_video_first_frame', (
     tester,
   ) async {
@@ -2103,12 +2136,14 @@ class _RouteVideoPlayer extends VideoPlayerPort {
 
 class _RecordingPlayer implements PlayerPort {
   bool playing = false;
+  int playCalls = 0;
 
   @override
   Future<void> initialize() async {}
 
   @override
   Future<void> play() async {
+    playCalls++;
     playing = true;
   }