perf(player): 优化点击响应与互动反馈

test/player/double_tap_like_test.dart

@@ -16,8 +16,10 @@ import '../support/fake_haptics.dart';
 import '../support/fake_interaction_repositories.dart';
 
 void main() {
-  testWidgets('double tap within 320ms never pauses', (tester) async {
-    for (final delay in [120, 250, 300]) {
+  testWidgets('should_like_without_pausing_when_double_tap_within_240ms', (
+    tester,
+  ) async {
+    for (final delay in [80, 160, 220]) {
       final repository = FakeInteractionRepository();
       final haptics = FakeHaptics();
       final key = GlobalKey<_HarnessState>();
@@ -53,7 +55,7 @@ void main() {
     }
   });
 
-  testWidgets('taps 500ms apart toggle playback twice', (tester) async {
+  testWidgets('should_toggle_twice_when_taps_are_260ms_apart', (tester) async {
     final key = GlobalKey<_HarnessState>();
     final clock = _TestClock();
     await _pumpHarness(
@@ -67,15 +69,15 @@ void main() {
     await tester.tapAt(
       tester.getCenter(find.byKey(const Key('home-feed-gesture'))),
     );
-    clock.advance(const Duration(milliseconds: 500));
-    await tester.pump(const Duration(milliseconds: 500));
+    clock.advance(const Duration(milliseconds: 260));
+    await tester.pump(const Duration(milliseconds: 260));
     expect(key.currentState!.pauseToggles, 1);
 
     await tester.tapAt(
       tester.getCenter(find.byKey(const Key('home-feed-gesture'))),
     );
-    clock.advance(const Duration(milliseconds: 500));
-    await tester.pump(const Duration(milliseconds: 500));
+    clock.advance(const Duration(milliseconds: 260));
+    await tester.pump(const Duration(milliseconds: 260));
     expect(key.currentState!.pauseToggles, 2);
   });
 

test/player/interaction_rail_motion_test.dart

@@ -14,11 +14,13 @@ const _popFrame = Duration(milliseconds: 100);
 const _buttonSize = 48.0;
 const _compactGap = 6.0;
 const _epsilon = 0.01;
-const _cancelledMaximum = 0.8;
-const _popMinimum = 1.22;
+const _cancelledMinimum = 0.8;
+const _popMinimum = 1.03;
+const _popMaximum = 1.18;
 const _burstKey = Key('rail-tap-burst');
 const _directionFrame = Duration(milliseconds: 60);
-const _directionFrames = 4;
+const _directionFrames = 2;
+const _motionCompletion = Duration(milliseconds: 230);
 
 Future<void> _pumpRail(
   WidgetTester tester, {
@@ -115,7 +117,9 @@ void main() {
           await tester.pump(_popFrame);
           expect(
             _scale(tester, key),
-            selected ? lessThan(_cancelledMaximum) : greaterThan(_popMinimum),
+            selected
+                ? allOf(greaterThan(_cancelledMinimum), lessThan(1))
+                : allOf(greaterThan(_popMinimum), lessThan(_popMaximum)),
           );
           _expectBurst(tester, key, selected);
           expect(tester.getRect(_button(key)), rect);
@@ -155,6 +159,15 @@ void main() {
     },
   );
 
+  testWidgets('should_finish_feedback_within_230ms', (tester) async {
+    await _pumpRail(tester, onTap: () {});
+    await tester.tap(_button(_likeKey));
+    await tester.pump();
+    await tester.pump(_motionCompletion);
+    expect(find.byKey(_burstKey), findsNothing);
+    expect(_scale(tester, _likeKey), closeTo(1, _epsilon));
+  });
+
   testWidgets('should_keep_callbacks_without_motion_when_reduced', (
     tester,
   ) async {