Wait for voice recording and playback release before call signalling

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

@@ -216,9 +216,10 @@ object CallController : TelecomCallManager.Listener {
                 if (_state.value?.callId != id || _state.value?.ongoing != true) return@launch
                 LogManager.addLog("INFO", "Call", "media release begins id=$id restoreRadio=$radioToRestore")
                 val radioStopped = RadioAudioEngine.instance().stopForCall()
+                val voiceStopped = AudioRecorderManager.stopAll()
                 StreamController.stopForCall()
                 StreamPlayerEngine.stopForCall()
-                withContext(Dispatchers.IO) { radioStopped.get(); MediaAudioController.awaitIdle() }
+                withContext(Dispatchers.IO) { radioStopped.get(); voiceStopped.forEach { it.get() }; MediaAudioController.awaitIdle() }
                 val current = _state.value
                 if (current?.callId != id || !current.ongoing) {
                     LogManager.addLog("INFO", "Call", "media released after call cancellation id=$id")

tools/chatgui-android/app/src/main/java/com/utun/chat/viewmodel/ChatViewModel.kt

@@ -1747,6 +1747,7 @@ class ChatViewModel : ViewModel() {
     }
 
     fun playVoiceMessage(filePath: String, durMs: Int) {
+        if (CallController.blocksMedia()) { LogManager.addLog("WARN", "Voice", "Playback rejected: call owns audio"); return }
         val cur = _playbackState.value
         if (cur.filePath == filePath) {
             if (cur.paused) {
@@ -1774,6 +1775,7 @@ class ChatViewModel : ViewModel() {
     }
 
     fun seekVoice(filePath: String, seekMs: Int, durMs: Int) {
+        if (CallController.blocksMedia()) { LogManager.addLog("WARN", "Voice", "Seek rejected: call owns audio"); return }
         audioRecorder.stopPlayback()
         realPlaybackElapsedMs = seekMs
         _playbackState.value = PlaybackState(filePath, playing = true, durMs = durMs, elapsedMs = seekMs,

tools/chatgui-android/call-service-tests/src/main/kotlin/com/utun/chat/data/CallServiceHost.kt

@@ -112,4 +112,8 @@ class RadioAudioEngine {
 }
 object StreamPlayerEngine { val viewing = MutableStateFlow(false); fun stopForCall() { viewing.value = false } }
 object MediaAudioController { var beforeIdle: () -> Unit = {}; fun awaitIdle() { beforeIdle() } }
+object AudioRecorderManager {
+    var stopped: CompletableFuture<Unit> = CompletableFuture.completedFuture(Unit)
+    fun stopAll() = listOf(stopped)
+}
 enum class MediaAudioProfile { AUTO, PHONE, WIRED, BLUETOOTH }