fix(player): 延长飘心并显示毫秒计时

lib/pages/player/widgets/player_double_tap_hearts.dart

@@ -1,13 +1,14 @@
 // Author: fruit.com.cn
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 import '../../../core/theme/app_colors.dart';
 
-const int _heartDurationMs = 680;
+const int _heartDurationMs = 1500;
 const double _heartPopPortion = 0.18;
 const double _heartStartScale = 0.7;
-const double _heartHoldPortion = 0.45;
+const double _heartHoldPortion = 0.55;
 
 const List<_HeartParticle> _hearts = [
   _HeartParticle(
@@ -35,9 +36,14 @@ const List<_HeartParticle> _hearts = [
 
 /// 双击点赞时，在点击位置飘出一小簇心。
 class PlayerDoubleTapHeartBurst extends StatefulWidget {
-  const PlayerDoubleTapHeartBurst({super.key, required this.onCompleted});
+  const PlayerDoubleTapHeartBurst({
+    super.key,
+    required this.onCompleted,
+    this.origin = Offset.zero,
+  });
 
   final VoidCallback onCompleted;
+  final Offset origin;
 
   @override
   State<PlayerDoubleTapHeartBurst> createState() =>
@@ -47,14 +53,24 @@ class PlayerDoubleTapHeartBurst extends StatefulWidget {
 class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
     with SingleTickerProviderStateMixin {
   late final AnimationController _controller;
+  final Stopwatch _lifetime = Stopwatch();
   bool _completed = false;
 
   @override
   void initState() {
     super.initState();
+    _lifetime.start();
     final total = _hearts
         .map((heart) => heart.delay + _heartDurationMs)
         .reduce((left, right) => left > right ? left : right);
+    if (kDebugMode) {
+      debugPrint(
+        '[player] phase=heart-burst-start '
+        'id=${identityHashCode(this)} count=${_hearts.length} '
+        'configuredMs=$total at=${widget.origin.dx.toStringAsFixed(1)},'
+        '${widget.origin.dy.toStringAsFixed(1)}',
+      );
+    }
     _controller = AnimationController(
       vsync: this,
       duration: Duration(milliseconds: total),
@@ -65,11 +81,37 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
   void _onStatus(AnimationStatus status) {
     if (status != AnimationStatus.completed || _completed) return;
     _completed = true;
+    if (kDebugMode) {
+      debugPrint(
+        '[player] phase=heart-burst-complete '
+        'id=${identityHashCode(this)} '
+        'configuredMs=${_controller.duration?.inMilliseconds ?? 0}',
+      );
+    }
     widget.onCompleted();
   }
 
   @override
   void dispose() {
+    if (kDebugMode) {
+      final elapsedMs = _completed
+          ? _controller.duration?.inMilliseconds ?? 0
+          : _lifetime.elapsedMilliseconds;
+      debugPrint(
+        '[player] phase=heart-burst-dispose '
+        'id=${identityHashCode(this)} elapsedMs=$elapsedMs '
+        'completed=${_completed ? 1 : 0}',
+      );
+      if (!_completed) {
+        debugPrintStack(
+          maxFrames: 30,
+          label:
+              '[player] heart-burst-premature-dispose '
+              'id=${identityHashCode(this)} mount=tap-gesture-region',
+        );
+      }
+    }
+    _lifetime.stop();
     _controller
       ..removeStatusListener(_onStatus)
       ..dispose();
@@ -86,10 +128,26 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
             final elapsed =
                 _controller.value * _controller.duration!.inMilliseconds;
             return Stack(
+              fit: StackFit.expand,
               clipBehavior: Clip.none,
               children: [
                 for (var index = 0; index < _hearts.length; index++)
                   _heart(_hearts[index], elapsed, index),
+                if (kDebugMode)
+                  Positioned(
+                    left: widget.origin.dx + 8,
+                    top: widget.origin.dy,
+                    child: IgnorePointer(
+                      child: Text(
+                        '${elapsed.round()}ms',
+                        key: const Key('heart-burst-elapsed-debug'),
+                        style: const TextStyle(
+                          color: Colors.white60,
+                          fontSize: 11,
+                        ),
+                      ),
+                    ),
+                  ),
               ],
             );
           },
@@ -113,8 +171,8 @@ class _PlayerDoubleTapHeartBurstState extends State<PlayerDoubleTapHeartBurst>
         ? 1.0
         : 1 - ((progress - _heartHoldPortion) / (1 - _heartHoldPortion));
     return Positioned(
-      left: heart.drift * move - heart.size / 2,
-      top: -heart.size / 2 - heart.travel * move,
+      left: widget.origin.dx + heart.drift * move - heart.size / 2,
+      top: widget.origin.dy - heart.size / 2 - heart.travel * move,
       child: Opacity(
         opacity: opacity.clamp(0.0, 1.0),
         child: Transform.scale(