fix(speech): 修复语音服务资源释放问题

确保语音服务在关闭时正确释放底层资源
移除翻译控制器中不必要的服务销毁调用以避免性能问题

lib/data/services/speech_impl/azure_asr_service.dart

@@ -139,6 +139,13 @@ class AzureAsrService extends GetxService implements AsrService {
     }
   }
 
+  @override
+  void onClose() async {
+    // 页面或服务被删除时，确保释放底层资源
+    await dispose();
+    super.onClose();
+  }
+
   @override
   Future<RecognitionEvent> recognizeOnce() async {
     if (!_isInitialized) {

lib/data/services/speech_impl/azure_ast_service.dart

@@ -54,6 +54,13 @@ class AzureAstService extends GetxService implements AstService {
     _loadConfig();
   }
 
+  @override
+  void onClose() async {
+    // 页面或服务被删除时，确保释放底层资源
+    await dispose();
+    super.onClose();
+  }
+
   /// 设置事件通道
   void _setupEventChannel() {
     _eventSubscription?.cancel();
@@ -244,12 +251,19 @@ class AzureAstService extends GetxService implements AstService {
   @override
   Future<void> dispose() async {
     try {
-      final bool result = await _channel.invokeMethod('dispose');
-
-      return;
+      // 取消事件订阅，关闭事件流，重置状态（补充释放，避免监听残留）
+      await _eventSubscription?.cancel();
+      _eventSubscription = null;
+      await _eventStreamController?.close();
+      _eventStreamController = null;
+
+      // 通知原生端释放资源，并重置初始化标记
+      await _channel.invokeMethod('dispose');
+      _isInitialized = false;
+      Logger.info('Azure AST 资源已释放');
     } catch (e) {
-      Logger.error('停止录音: ${e.toString()}');
-      rethrow;
+      Logger.error('Azure AST 资源释放失败: ${e.toString()}');
+      _isInitialized = false;
     }
   }
 

lib/modules/translation/controllers/translation_controller.dart

@@ -234,7 +234,7 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
   Future<void> changeTranslationMode(String mode) async {
     currentMode.value = mode;
     currentModeTitle.value = _getModeTitle(mode);
-    stopAll();
+    //stopAll();
 
     // 检查悬浮窗支持情况
     if (isFloatingWindowEnabled.value && !_isFloatingWindowSupportedMode()) {
@@ -592,7 +592,7 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
         sourceLanguageCode.value,
         targetLanguageCode.value
       ];
-      Logger.info('2初始化ASR服务，支持语言: $asrSupportedLanguages');
+      //Logger.info('2初始化ASR服务，支持语言: $asrSupportedLanguages');
 
       //await _asrService.initialize(supportedLanguages: asrSupportedLanguages);
 
@@ -640,7 +640,7 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
         sourceLanguageCode.value,
         targetLanguageCode.value
       ];
-
+      Logger.info('1初始化AST服务，支持语言: $callModeLanguages'); //ast=asr+translate
       await _astService.initialize(supportedLanguages: callModeLanguages);
       Logger.info('通话模式语音翻译服务初始化完成');
     } catch (e) {
@@ -656,8 +656,9 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
     _voiceInteractionSubscription?.cancel();
     _translationDebounceTimer?.cancel();
     restoreOtherServices();
-    _asrService.dispose();
-    _astService.dispose();
+    // 移除对服务的 dispose，避免频繁销毁/重建造成卡顿
+    // _asrService.dispose();
+    // _astService.dispose();
 
     // 释放管理器资源
     _timerManager.dispose();