Add Android live stream audio switch and document radio behavior

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/StreamScreen.kt

@@ -123,6 +123,13 @@ fun StreamScreen(channelId: String, channelName: String, sources: List<StreamSou
     }) { padding ->
         Column(Modifier.fillMaxSize().padding(padding).padding(12.dp), verticalArrangement = Arrangement.spacedBy(8.dp)) {
             Text(channelName, style = MaterialTheme.typography.titleMedium)
+            if (local?.ongoing == true && (selected == null || selected.self)) {
+                Row {
+                    Checkbox(checked = local.audioEnabled, onCheckedChange = StreamController::setAudioEnabled,
+                        enabled = local.phase == StreamPhase.LIVE && local.audioAvailable)
+                    Text(stringResource(R.string.stream_audio), Modifier.padding(top = 12.dp))
+                }
+            }
             if (selected != null) {
                 Text(selected.displayName, style = MaterialTheme.typography.titleSmall)
                 if (selected.self && local?.ongoing == true) {