引入部分缓存机制

引入封面图信息

正在进入测试阶段

lib/services/audio_service.dart

@@ -4,6 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:media_kit/media_kit.dart';
 import 'playback_service.dart';
 import '../metadata/metadata_service.dart';
+import 'dart:typed_data';
 
 enum PlayMode {
   sequential,
@@ -16,12 +17,14 @@ class Song {
   final String title;
   final String artist;
   final String? url;
+  final Uint8List? artwork;
 
   Song({
     required this.id,
     required this.title,
     required this.artist,
     this.url,
+    this.artwork,
   });
 }
 
@@ -181,6 +184,8 @@ class AudioService extends ChangeNotifier {
           title: metadata.title.isNotEmpty ? metadata.title : song.title,
           artist: metadata.artist.isNotEmpty ? metadata.artist : song.artist,
           url: song.url,
+          artwork: metadata.artwork,
+          // ⭐ 如果需要传递 artwork，可以在这里添加字段
         );
         _queue[_currentIndex] = updatedSong;
         _currentSong = updatedSong;