优化按钮状态锁

lib/modules/mobile_elf/controllers/mobile_elf_controller.dart

@@ -48,6 +48,7 @@ class MobileElfController extends GetxController {
   StreamSubscription<AgentServiceEvent>? _eventSub;
   Timer? _callTimer;
   Timer? _pttTimer;
+  Timer? _pttSafetyTimer;
   bool _inCallMode = false;
   bool _callStarting = false; // 防止并发 startCall
   // PTT 松开后仍有异步事件待处理（recognition_result / assistant_response / tts）
@@ -56,6 +57,8 @@ class MobileElfController extends GetxController {
   bool _pttStarting = false;
   // BLE/AI 唤醒触发的会话（非通话、非PTT模式下的唤醒）
   bool _bleWakeupActive = false;
+  // PTT 被中止（轻点松手），用于忽略原生层的残留事件
+  bool _pttAborted = false;
   final _storage = GetStorage();
   // 滚动：layout 变化前是否已在底部
   bool _atBottom = true;
@@ -107,6 +110,7 @@ class MobileElfController extends GetxController {
     _eventSub?.cancel();
     _callTimer?.cancel();
     _pttTimer?.cancel();
+    _pttSafetyTimer?.cancel();
     AgentService.stopConversation();
     scrollController.dispose();
     super.onClose();
@@ -127,6 +131,11 @@ class MobileElfController extends GetxController {
     final sessionActive = _inCallMode || pttRecording.value || _pttResultPending || _bleWakeupActive;
     switch (event.type) {
       case AgentServiceEventType.recognitionStarted:
+        // 忽略刚刚中止的 PTT 会话的残留事件，避免误触发 BLE 唤醒
+        if (_pttAborted && !sessionActive) {
+          _pttAborted = false;
+          break;
+        }
         // BLE/AI 唤醒：即使没有主动会话也激活
         if (!sessionActive) _bleWakeupActive = true;
         status.value = MobileElfStatus.recording;
@@ -175,6 +184,7 @@ class MobileElfController extends GetxController {
       case AgentServiceEventType.ttsCompleted:
         if (!sessionActive) break;
         _pttResultPending = false;
+        _pttSafetyTimer?.cancel();
         _endBleWakeup();        // BLE 唤醒一轮结束，清理 native PTT 状态
         if (_inCallMode) {
           status.value = MobileElfStatus.recording;
@@ -189,6 +199,7 @@ class MobileElfController extends GetxController {
       case AgentServiceEventType.ttsStopped:
         if (!sessionActive) break;
         _pttResultPending = false;
+        _pttSafetyTimer?.cancel();
         _endBleWakeup();
         status.value = _inCallMode ? MobileElfStatus.recording : MobileElfStatus.idle;
         micAlive.value = _inCallMode;
@@ -197,6 +208,7 @@ class MobileElfController extends GetxController {
       case AgentServiceEventType.error:
         if (!sessionActive) break;
         _pttResultPending = false;
+        _pttSafetyTimer?.cancel();
         _endBleWakeup();
         final msg = event.data['message']?.toString() ?? '未知错误';
         status.value = MobileElfStatus.error;
@@ -240,6 +252,7 @@ class MobileElfController extends GetxController {
   Future<void> startCall() async {
     if (inCall.value || _callStarting) return;
     _callStarting = true;
+    _pttAborted = false;
     _checkHeartbeat();
     try {
       // 若有正在播报的 PTT/BLE 唤醒会话，先强制中断 TTS/AI 流，
@@ -281,6 +294,7 @@ class MobileElfController extends GetxController {
     _inCallMode = false;
     _pttStarting = false;
     _pttResultPending = false; // 强制结束所有等待
+    _pttSafetyTimer?.cancel();
     _bleWakeupActive = false;
     inCall.value = false;
     _callTimer?.cancel();
@@ -306,6 +320,7 @@ class MobileElfController extends GetxController {
   Future<void> startPtt() async {
     if (pttRecording.value || _pttStarting) return;
     _pttStarting = true;
+    _pttAborted = false;
     _checkHeartbeat();
     // BLE 唤醒/PTT 等待结果期间用户按下 PTT，先中断当前会话（同 startCall 逻辑）
     if (_bleWakeupActive || _pttResultPending) {
@@ -343,10 +358,33 @@ class MobileElfController extends GetxController {
     }
     if (!pttRecording.value) return;
     pttRecording.value = false;
-    _pttResultPending = true; // 等待 fin_result/assistant_response/tts 异步回来
     _pttTimer?.cancel();
     _pttTimer = null;
+
+    // 如果还在连接中（还未开始识别），说明用户轻点了一下就松手，
+    // 直接恢复空闲，不需要等待异步事件回来
+    if (status.value == MobileElfStatus.connecting) {
+      _pttAborted = true; // 标记中止，忽略原生层的残留事件
+      _pttResultPending = false;
+      status.value = MobileElfStatus.idle;
+      micAlive.value = false;
+      AgentService.stopConversation();
+      return;
+    }
+
+    _pttResultPending = true; // 等待 fin_result/assistant_response/tts 异步回来
     AgentService.stopConversation();
+
+    // 安全超时：防止原生层未返回事件导致状态永久卡住
+    _pttSafetyTimer?.cancel();
+    _pttSafetyTimer = Timer(const Duration(seconds: 8), () {
+      if (_pttResultPending && !_inCallMode) {
+        Logger.info('$_tag PTT safety timeout — force reset to idle');
+        _pttResultPending = false;
+        status.value = MobileElfStatus.idle;
+        micAlive.value = false;
+      }
+    });
   }
 
   void interruptSpeaking() {