唤醒流程更新，修复重复唤醒的问题

lib/widgets/chat_popup.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 import 'dart:ui';
 import 'package:ai_chat_assistant/manager.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_vosk_wakeword/flutter_vosk_wakeword.dart';
 import 'package:provider/provider.dart';
 import '../pages/full_screen.dart';
 import '../services/message_service.dart';
@@ -44,6 +45,7 @@ class _ChatPopupState extends State<ChatPopup> with SingleTickerProviderStateMix
 
     // 订阅唤醒词事件
     _wakeWordSubscription = AIChatAssistantManager.instance.onWakeWordDetected.listen((_) async {
+      await FlutterVoskWakeword.instance.stop();
       // 在这里处理唤醒事件，例如显示聊天窗口
       debugPrint("唤醒词被检测到，执行UI操作！");
       final messageService = MessageService.instance;
@@ -59,8 +61,9 @@ class _ChatPopupState extends State<ChatPopup> with SingleTickerProviderStateMix
     super.dispose();
   }
 
-  void _insertOverlay() {
+  Future<void> _insertOverlay() async {
     if (_isShowingPopup) return;
+    await FlutterVoskWakeword.instance.stop(); // 停止唤醒词监听，避免误触发
     setState(() {
       _isShowingPopup = true;
     });
@@ -69,6 +72,7 @@ class _ChatPopupState extends State<ChatPopup> with SingleTickerProviderStateMix
 
   void _removeOverlay() {
     if (!_isShowingPopup) return;
+    FlutterVoskWakeword.instance.start(); // 重新开始监听唤醒词
     _partScreenAnimationController.reverse().then((_) {
       if (mounted) {
         setState(() {