fix(player): 使用根Overlay承载飘心

lib/pages/player/widgets/player_double_tap_hearts.dart

@@ -38,10 +38,12 @@ const List<_HeartParticle> _hearts = [
 class PlayerDoubleTapHeartBurst extends StatefulWidget {
   const PlayerDoubleTapHeartBurst({
     super.key,
+    required this.burstId,
     required this.onCompleted,
     this.origin = Offset.zero,
   });
 
+  final int burstId;
   final VoidCallback onCompleted;
   final Offset origin;
 
@@ -66,7 +68,7 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
     if (kDebugMode) {
       debugPrint(
         '[player] phase=heart-burst-start '
-        'id=${identityHashCode(this)} count=${_hearts.length} '
+        'id=${widget.burstId} count=${_hearts.length} '
         'configuredMs=$total at=${widget.origin.dx.toStringAsFixed(1)},'
         '${widget.origin.dy.toStringAsFixed(1)}',
       );
@@ -84,7 +86,7 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
     if (kDebugMode) {
       debugPrint(
         '[player] phase=heart-burst-complete '
-        'id=${identityHashCode(this)} '
+        'id=${widget.burstId} '
         'configuredMs=${_controller.duration?.inMilliseconds ?? 0}',
       );
     }
@@ -99,7 +101,7 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
           : _lifetime.elapsedMilliseconds;
       debugPrint(
         '[player] phase=heart-burst-dispose '
-        'id=${identityHashCode(this)} elapsedMs=$elapsedMs '
+        'id=${widget.burstId} elapsedMs=$elapsedMs '
         'completed=${_completed ? 1 : 0}',
       );
       if (!_completed) {
@@ -107,7 +109,7 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
           maxFrames: 30,
           label:
               '[player] heart-burst-premature-dispose '
-              'id=${identityHashCode(this)} mount=tap-gesture-region',
+              'id=${widget.burstId} mount=root-overlay',
         );
       }
     }

lib/pages/player/widgets/player_tap_gesture_region.dart

@@ -167,6 +167,7 @@ class _PlayerTapGestureRegionState extends State<PlayerTapGestureRegion> {
         child: IgnorePointer(
           child: PlayerDoubleTapHeartBurst(
             key: ValueKey('heart-overlay-$id'),
+            burstId: id,
             origin: origin,
             onCompleted: () => _removeHeartOverlay(id),
           ),