部分界面逻辑调整：播放界面默认最高优先级，其次是独立的miniplayerbar

lib/main.dart

@@ -5,6 +5,7 @@ import 'package:media_kit/media_kit.dart';
 import 'services/audio_service.dart';
 import 'services/playback_service.dart';
 import 'pages/home_page.dart';
+import 'pages/player_page.dart';
 import 'widgets/global_mini_player.dart';
 
 // ✅ 全局导航键
@@ -61,14 +62,41 @@ void main() {
   );
 }
 
-class QTPlayerApp extends StatelessWidget {
+class QTPlayerApp extends StatefulWidget {
   const QTPlayerApp({super.key});
 
+  @override
+  State<QTPlayerApp> createState() => _QTPlayerAppState();
+}
+
+class _QTPlayerAppState extends State<QTPlayerApp> {
+  bool _showPlayerPage = false;
+
+  // ✅ 播放页回调，暴露给 GlobalMiniPlayer
+  void _openPlayerPage() {
+    setState(() {
+      _showPlayerPage = true;
+    });
+  }
+
+  void _closePlayerPage() {
+    setState(() {
+      _showPlayerPage = false;
+    });
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    // ✅ 注入回调（GlobalMiniPlayer 是 static 成员）
+    GlobalMiniPlayer.onOpenPlayerPage = _openPlayerPage;
+  }
+
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
       title: '清听',
-      navigatorKey: navigatorKey, // ✅ 设置导航键
+      navigatorKey: navigatorKey,
       theme: ThemeData(
         brightness: Brightness.dark,
         primaryColor: const Color(0xFF7C9A9E),
@@ -87,13 +115,22 @@ class QTPlayerApp extends StatelessWidget {
             OverlayEntry(
               builder: (context) => Stack(
                 children: [
+                  // ① 主页面
                   Positioned.fill(child: child!),
+                  // ② MiniPlayer
                   const Positioned(
                     left: 0,
                     right: 0,
                     bottom: 0,
                     child: GlobalMiniPlayer(),
                   ),
+                  // ③ 播放页（全屏覆盖）
+                  if (_showPlayerPage)
+                    Positioned.fill(
+                      child: PlayerPage(
+                        onClose: _closePlayerPage,
+                      ),
+                    ),
                 ],
               ),
             ),