部分界面调整，把底部的播放控件完整前置

lib/main.dart

@@ -1,23 +1,24 @@
+// lib/main.dart
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:media_kit/media_kit.dart';
 import 'services/audio_service.dart';
 import 'services/playback_service.dart';
 import 'pages/home_page.dart';
+import 'widgets/global_mini_player.dart';
+
+// ✅ 全局导航键
+final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
 
 void main() {
   WidgetsFlutterBinding.ensureInitialized();
 
-  // 捕获初始化阶段的所有异常，避免引擎崩溃
   try {
-    // 必须先初始化 media_kit
     MediaKit.ensureInitialized();
-    // 然后初始化播放服务
     PlaybackService().init();
   } catch (e, stack) {
     print('❌ 初始化失败: $e');
     print(stack);
-    // 显示错误页面，而不是白屏
     runApp(
       MaterialApp(
         home: Scaffold(
@@ -47,7 +48,6 @@ void main() {
     return;
   }
 
-  // 运行时错误捕获
   FlutterError.onError = (details) {
     print('❌ Flutter Error: ${details.exception}');
     print('Stack: ${details.stack}');
@@ -68,6 +68,7 @@ class QTPlayerApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       title: '清听',
+      navigatorKey: navigatorKey, // ✅ 设置导航键
       theme: ThemeData(
         brightness: Brightness.dark,
         primaryColor: const Color(0xFF7C9A9E),
@@ -80,6 +81,25 @@ class QTPlayerApp extends StatelessWidget {
         useMaterial3: true,
       ),
       home: const HomePage(),
+      builder: (context, child) {
+        return Overlay(
+          initialEntries: [
+            OverlayEntry(
+              builder: (context) => Stack(
+                children: [
+                  Positioned.fill(child: child!),
+                  const Positioned(
+                    left: 0,
+                    right: 0,
+                    bottom: 0,
+                    child: GlobalMiniPlayer(),
+                  ),
+                ],
+              ),
+            ),
+          ],
+        );
+      },
     );
   }
 }