Serialize stream capture preferences with other saved media profiles

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

@@ -279,14 +279,14 @@ class ConfigProvider(private val context: Context) {
         LogManager.addLog("INFO", "STREAM", "Broadcast settings saved n=$subblocks r=$redundant; apply on next start")
     }
 
-    suspend fun getStreamCaptureSettings(): StreamCaptureSettings {
+    suspend fun getStreamCaptureSettings(): StreamCaptureSettings = configFiles.submit("load stream capture") {
         val prefs = context.dataStore.data.first()
-        return StreamCaptureSettings(prefs[streamCamera] ?: "", prefs[streamWidth] ?: 1280, prefs[streamHeight] ?: 720,
+        StreamCaptureSettings(prefs[streamCamera] ?: "", prefs[streamWidth] ?: 1280, prefs[streamHeight] ?: 720,
             prefs[streamFps] ?: 30, prefs[streamCodec] ?: StreamVideoCodec.H264.id, prefs[streamRotation] ?: StreamOrientation.AUTO.degrees,
             prefs[streamBitrate], prefs[streamAudio] ?: true)
-    }
+    }.await()
 
-    suspend fun saveStreamCaptureSettings(config: StreamCaptureConfig?, audio: Boolean?) {
+    fun saveStreamCaptureSettings(config: StreamCaptureConfig?, audio: Boolean?): Deferred<Unit> = configFiles.submit("save stream capture") {
         context.dataStore.edit { prefs ->
             config?.let {
                 prefs[streamCamera] = it.mode.camera

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

@@ -45,7 +45,7 @@ object StreamController {
     /** Запись переживает закрытие экрана; DataStore сохраняет выбор одним изменением. */
     fun rememberSettings(config: StreamCaptureConfig? = null, audio: Boolean? = null) {
         settingsScope.launch {
-            try { ChatApplication.instance.configProvider.saveStreamCaptureSettings(config, audio) }
+            try { ChatApplication.instance.configProvider.saveStreamCaptureSettings(config, audio).await() }
             catch (e: CancellationException) { throw e }
             catch (e: Exception) { LogManager.addLog("ERROR", "stream", "capture settings save failed: $e") }
         }