fix(azure_speech): 优化蓝牙HFP麦克风检测和音频路由配置

动态检测蓝牙HFP输入设备并优先选择
移除默认外放选项，根据输出设备智能路由
添加音频会话配置的兜底逻辑

local_plugins/agent_service/ios/agent_service/Sources/agent_service/AgentServiceImpl.swift

@@ -191,7 +191,7 @@ class AgentServiceImpl: NSObject {
             """
     }
     func initialize(config: [String: Any]) -> Bool {
-        if isInitialized { return true }
+        // if isInitialized { return true }
         // os_log("initialize: config=%{public}@", log: logger, type: .info, config)
         
         self.config = config

local_plugins/azure_speech/ios/azure_speech/Sources/tools/SimpleAudioReceiver.swift

@@ -128,10 +128,11 @@ public class SimpleAudioReceiver: NSObject {
         _isWriting=true
         self.audioSourceType = audioSourceType;
             self.audioDataCallback = audioDataCallback
-            print("startAudioRecord=audioSourceType\(audioSourceType)") 
+            print("音源设制---------- startAudioRecord=audioSourceType:\(audioSourceType)") 
             switch audioSourceType {
             case .microphone:
-                isReceiverHFP = true
+                // 根据当前可用输入设备动态判定是否存在蓝牙HFP麦克风
+                isReceiverHFP = hasBluetoothHFPInput()
                 runMicrophoneCapture()
             case .external:
                 isReceiverHFP = false
@@ -139,6 +140,21 @@ public class SimpleAudioReceiver: NSObject {
             }
     }
     
+    /**
+     * 检测是否存在蓝牙HFP输入设备
+     * 参数：无
+     * 返回值：存在返回true，否则返回false
+     * 异常：无
+     */
+    private func hasBluetoothHFPInput() -> Bool {
+        let session = AVAudioSession.sharedInstance()
+        if let inputs = session.availableInputs {
+            return inputs.contains { $0.portType == .bluetoothHFP }
+        }
+        // 兜底使用当前路由的输入
+        return session.currentRoute.inputs.contains { $0.portType == .bluetoothHFP }
+    }
+    
     /**
      * 开启音频写入线程
      * 修复：使用userInitiated QoS避免优先级反转
@@ -263,7 +279,7 @@ public class SimpleAudioReceiver: NSObject {
                         // 非通话：保持原有逻辑，但使用 .allowBluetooth 以支持录音（而不是 A2DP）
                         desiredCategory = .playAndRecord
                         desiredMode = .videoChat
-                        desiredOptions = [.allowBluetooth, .mixWithOthers, .defaultToSpeaker]
+                        desiredOptions = [.allowBluetooth, .mixWithOthers]
                         //desiredOptions = [.mixWithOthers, .defaultToSpeaker]
                     }else{
                         desiredCategory = .playAndRecord
@@ -276,13 +292,13 @@ public class SimpleAudioReceiver: NSObject {
                     // 通话中：录音优先，避免 A2DP（仅播放），改用 HFP（.allowBluetooth）
                     desiredCategory = .record
                     desiredMode = .voiceChat
-                    desiredOptions = [.allowBluetoothA2DP]
+                    desiredOptions = [.allowBluetooth]
                 } else {
                     if(isHeadphones){
                         // 非通话：保持原有逻辑，但使用 .allowBluetooth 以支持录音（而不是 A2DP）
                         desiredCategory = .playAndRecord
                         desiredMode = .videoChat
-                        desiredOptions = [.allowBluetoothA2DP, .mixWithOthers, .defaultToSpeaker]
+                        desiredOptions = [.allowBluetoothA2DP, .mixWithOthers]
                         //desiredOptions = [.mixWithOthers, .defaultToSpeaker]
                     }else{
                         desiredCategory = .playAndRecord
@@ -307,6 +323,22 @@ public class SimpleAudioReceiver: NSObject {
     
             // 保持激活；这里重复 setActive(true) 一般安全，但如果你观察到重复激活也触发路由回调，可在外层控制频率
             try audioSession.setActive(true, options: .notifyOthersOnDeactivation)
+            
+            // 路由校正：有蓝牙输出时不强制外放，并优先选择蓝牙输入（HFP）或内置麦克风
+            let outputs = audioSession.currentRoute.outputs
+            let hasBtOutput = outputs.contains { out in
+                out.portType == .bluetoothA2DP || out.portType == .bluetoothHFP || out.portType == .bluetoothLE
+            }
+            if hasBtOutput {
+                try audioSession.overrideOutputAudioPort(.none)
+            }
+            if let inputs = audioSession.availableInputs {
+                if isReceiverHFP, let btInput = inputs.first(where: { $0.portType == .bluetoothHFP }) {
+                    try audioSession.setPreferredInput(btInput)
+                } else if let builtInMic = inputs.first(where: { $0.portType == .builtInMic }) {
+                    try audioSession.setPreferredInput(builtInMic)
+                }
+            }
         } catch {
             // 兜底：尽量保证能开始录音
             print("音频会话配置失败，尝试兜底配置: \(error)")
@@ -561,5 +593,3 @@ private class LinkedBlockingQueue<T> {
     }
 }
 
-
-