Quiesce Android capture before detaching PCM and consume PM cache files

tools/chatgui-android/app/src/main/java/com/utun/chat/data/AudioRecorderManager.kt

@@ -75,13 +75,14 @@ class AudioRecorderManager {
         isRecording = true
         LogManager.addLog("INFO", "AudioRecorder", "started ch=$channelId bufferSize=$bufferSize")
         audioRecord?.startRecording()
+        val device = audioRecord ?: return false
 
         recordingThread = Thread {
             val buffer = ShortArray(FRAME_SAMPLES)
             var totalRead = 0L
 
-            while (isRecording && audioRecord?.recordingState == AudioRecord.RECORDSTATE_RECORDING) {
-                val read = audioRecord?.read(buffer, 0, FRAME_SAMPLES) ?: break
+            while (isRecording && device.recordingState == AudioRecord.RECORDSTATE_RECORDING) {
+                val read = device.read(buffer, 0, FRAME_SAMPLES)
                 if (read <= 0) break
                 NativeLib.voiceFeed(buffer.copyOf(read))
                 totalRead += read
@@ -99,13 +100,12 @@ class AudioRecorderManager {
         if (!isRecording) return 0
         isRecording = false
 
-        recordingThread?.join(1000)
-        recordingThread = null
-
         audioRecord?.apply {
             try { stop() } catch (_: Exception) {}
-            release()
         }
+        recordingThread?.join()
+        recordingThread = null
+        audioRecord?.release()
         audioRecord = null
 
         val duration = NativeLib.voiceStop()
@@ -117,13 +117,12 @@ class AudioRecorderManager {
         if (!isRecording) return
         isRecording = false
 
-        recordingThread?.join(1000)
-        recordingThread = null
-
         audioRecord?.apply {
             try { stop() } catch (_: Exception) {}
-            release()
         }
+        recordingThread?.join()
+        recordingThread = null
+        audioRecord?.release()
         audioRecord = null
 
         NativeLib.voiceCancel()