fix(player): 优化双击飘心轨迹

test/player/double_tap_like_test.dart

@@ -6,6 +6,8 @@ import 'package:fruitshorts/core/data/services/interaction_controller.dart';
 import 'package:fruitshorts/core/theme/app_theme.dart';
 import 'package:fruitshorts/l10n/app_localizations.dart';
 import 'package:fruitshorts/pages/player/widgets/home_feed_overlay.dart';
+import 'package:fruitshorts/pages/player/widgets/player_double_tap_hearts.dart';
+import 'package:fruitshorts/pages/player/widgets/player_tap_gesture_region.dart';
 
 import '../support/fake_catalog.dart';
 import '../support/fake_haptics.dart';
@@ -91,7 +93,7 @@ void main() {
     await tester.tapAt(center);
     await tester.pump();
     expect(repository.likeTargets, hasLength(1));
-    await tester.pump(const Duration(milliseconds: 1600));
+    await tester.pump(const Duration(milliseconds: 2300));
 
     clock.advance(const Duration(milliseconds: 500));
     await tester.pump(const Duration(milliseconds: 500));
@@ -107,6 +109,40 @@ void main() {
     expect(key.currentState!.pauseToggles, 0);
     expect(find.byKey(const Key('double-tap-heart-0')), findsOneWidget);
   });
+
+  testWidgets('parent rebuild keeps the heart burst state alive', (
+    tester,
+  ) async {
+    final key = GlobalKey<_HarnessState>();
+    final clock = _TestClock();
+    await _pumpHarness(
+      tester,
+      FakeInteractionRepository(),
+      FakeHaptics(),
+      key,
+      clock,
+    );
+    final center = tester.getCenter(find.byKey(const Key('home-feed-gesture')));
+
+    await tester.tapAt(center);
+    clock.advance(const Duration(milliseconds: 100));
+    await tester.pump(const Duration(milliseconds: 100));
+    await tester.tapAt(center);
+    await tester.pump();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    final gestureFinder = find.byType(PlayerTapGestureRegion);
+    final burstFinder = find.byType(PlayerDoubleTapHeartBurst);
+    final gestureState = tester.state(gestureFinder);
+    final burstState = tester.state(burstFinder);
+
+    key.currentState!.rebuild();
+    await tester.pump(const Duration(milliseconds: 100));
+
+    expect(tester.state(gestureFinder), same(gestureState));
+    expect(tester.state(burstFinder), same(burstState));
+    expect(find.byKey(const Key('double-tap-heart-0')), findsOneWidget);
+  });
 }
 
 Future<void> _pumpHarness(
@@ -155,6 +191,8 @@ class _HarnessState extends State<_Harness> {
   );
   int pauseToggles = 0;
 
+  void rebuild() => setState(() {});
+
   Future<void> _like({bool likeOnly = false}) async {
     await widget.haptics.lightImpact();
     final episodeId = demoDramas.first.episodes.first.id;

test/player/player_double_tap_hearts_test.dart

@@ -10,7 +10,9 @@ void main() {
   ) async {
     await tester.pumpWidget(
       const MaterialApp(
-        home: Scaffold(body: PlayerDoubleTapHeartBurst(onCompleted: _noop)),
+        home: Scaffold(
+          body: PlayerDoubleTapHeartBurst(burstId: 1, onCompleted: _noop),
+        ),
       ),
     );
     await tester.pump(const Duration(milliseconds: 300));
@@ -33,10 +35,10 @@ void main() {
   });
 
   test('heart burst stays long and sparse', () {
-    expect(PlayerDoubleTapHeartBurst.singleHeartDurationMs, 1300);
+    expect(PlayerDoubleTapHeartBurst.singleHeartDurationMs, 1900);
     expect(
       PlayerDoubleTapHeartBurst.animationDuration,
-      greaterThanOrEqualTo(const Duration(milliseconds: 1200)),
+      greaterThanOrEqualTo(const Duration(milliseconds: 1800)),
     );
     expect(PlayerDoubleTapHeartBurst.particleCount, lessThanOrEqualTo(4));
     expect(PlayerDoubleTapHeartBurst.particleCount, 3);

test/player/player_fullscreen_test.dart

@@ -699,7 +699,7 @@ void main() {
       AppColors.doubleTapHeartRed,
     );
 
-    await tester.pump(const Duration(milliseconds: 1600));
+    await tester.pump(const Duration(milliseconds: 2300));
     expect(find.byKey(const Key('double-tap-heart-0')), findsNothing);
     expect(logic.session.userWantsPlay, isTrue);
   });