fix(player): 路由覆盖时暂停播放

lib/pages/player/player_logic.dart

@@ -289,6 +289,20 @@ class PlayerLogic extends ChangeNotifier {
     }
   }
 
+  /// 当前播放器页面被其它 PageRoute 覆盖时暂停并保存进度。
+  void onRouteCovered() {
+    if (!_started) return;
+    session.setRouteVisible(false);
+    cancelScrub();
+    unawaited(saveCurrentProgress());
+  }
+
+  /// 覆盖播放器的 PageRoute 返回后恢复当前 Tab 的播放状态。
+  void onRouteRevealed() {
+    if (!_started || !isMounted()) return;
+    session.setRouteVisible(active);
+  }
+
   void onPageUpdated(PlayerPage previous) {
     if (previous.active != active) {
       session.setRouteVisible(active && visibleIndices.isNotEmpty);

lib/pages/player/player_view.dart

@@ -14,6 +14,7 @@ import '../../core/data/services/playback_session.dart';
 import '../../core/data/services/video_player_port.dart';
 import '../../core/data/services/wallet_controller.dart';
 import '../../core/formatting/error_text.dart';
+import '../../core/navigation/app_route_observer.dart';
 import '../../core/platform/haptics.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_theme.dart';
@@ -86,8 +87,10 @@ class PlayerPage extends StatefulWidget {
   State<PlayerPage> createState() => _PlayerPageState();
 }
 
-class _PlayerPageState extends State<PlayerPage> with WidgetsBindingObserver {
+class _PlayerPageState extends State<PlayerPage>
+    with WidgetsBindingObserver, RouteAware {
   late final PlayerLogic logic;
+  PageRoute<dynamic>? _subscribedRoute;
   bool _chromeVisible = true;
   double _playbackSpeed = 1.0;
   bool _boosting = false;
@@ -121,14 +124,35 @@ class _PlayerPageState extends State<PlayerPage> with WidgetsBindingObserver {
     logic.onPageUpdated(oldWidget);
   }
 
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    final route = ModalRoute.of(context);
+    if (route is! PageRoute<dynamic> || route == _subscribedRoute) return;
+    if (_subscribedRoute != null) appRouteObserver.unsubscribe(this);
+    _subscribedRoute = route;
+    appRouteObserver.subscribe(this, route);
+  }
+
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
     logic.onLifecycle(state);
   }
 
+  @override
+  void didPushNext() {
+    logic.onRouteCovered();
+  }
+
+  @override
+  void didPopNext() {
+    logic.onRouteRevealed();
+  }
+
   @override
   void dispose() {
     WidgetsBinding.instance.removeObserver(this);
+    appRouteObserver.unsubscribe(this);
     logic.dispose();
     super.dispose();
   }