chat: UI настройки звука канала (Android toggle + JNI, desktop через C API) + trampoline

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

@@ -85,6 +85,10 @@ object NativeLib {
     fun setChatSetting(name: String, value: String) { nativeSetChatSetting(name, value) }
     fun getChatSettingInt(name: String, def: Int = 0): Int = nativeGetChatSettingInt(name, def)
 
+    /* ── Per-channel «play sound on message» ── */
+    fun getSoundOnMessage(chId: String): Boolean = nativeGetSoundOnMessage(chId) != 0
+    fun setSoundOnMessage(chId: String, on: Boolean) { nativeSetSoundOnMessage(chId, on) }
+
     /** Enable/disable forwarding native C logs to LogManager (expensive, off by default) */
     fun subscribeNativeLogs(enabled: Boolean) { nativeSubscribeLogs(enabled) }
     fun setUdpLogTarget(ip: String, port: Int) { nativeSetUdpLogTarget(ip, port) }
@@ -186,6 +190,8 @@ object NativeLib {
     private external fun nativeSetDebugLevel(category: String, level: String)
     private external fun nativeSetChatSetting(name: String, value: String)
     private external fun nativeGetChatSettingInt(name: String, def: Int): Int
+    private external fun nativeGetSoundOnMessage(chId: String): Int
+    private external fun nativeSetSoundOnMessage(chId: String, on: Boolean)
     private external fun nativeSubscribeLogs(enabled: Boolean)
     private external fun nativeSetUdpLogTarget(ip: String, port: Int)
     private external fun nativeRegenerateKeys()

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

@@ -70,6 +70,9 @@ fun ChatScreen(
     val overlayShown by RadioOverlayService.isShown.collectAsState()
     val localTalking by RadioAudioEngine.instance().talkingFlow.collectAsState()
 
+    /* звук сообщений канала */
+    val soundOn by viewModel.soundOn.collectAsState()
+
     /* attach menu */
     var showAttachMenu by remember { mutableStateOf(false) }
 
@@ -140,6 +143,9 @@ fun ChatScreen(
                 IconButton(onClick = onBack) { Icon(Icons.AutoMirrored.Filled.ArrowBack, "Back") }
             },
             actions = {
+                IconButton(onClick = { viewModel.toggleSound() }) {
+                    Text(if (soundOn) "\uD83D\uDD14" else "\uD83D\uDD15", fontSize = 18.sp)
+                }
                 IconButton(onClick = { viewModel.toggleRadio() }) {
                     Text(if (radioActive) "\uD83D\uDCFB" else "\uD83D\uDD07", fontSize = 18.sp)
                 }

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

@@ -94,6 +94,9 @@ class ChatViewModel : ViewModel() {
     private val _currentChannel = MutableStateFlow<Channel?>(null)
     val currentChannel: StateFlow<Channel?> = _currentChannel
 
+    private val _soundOn = MutableStateFlow(true)
+    val soundOn: StateFlow<Boolean> = _soundOn
+
     private val _pubKey = MutableStateFlow("")
     val pubKey: StateFlow<String> = _pubKey
 
@@ -857,10 +860,21 @@ class ChatViewModel : ViewModel() {
         val r = repo ?: return
         radioOff()   /* рацию выключаем при переключении канала */
         _currentChannel.value = channel
+        _soundOn.value = NativeLib.getSoundOnMessage(channel.id)
+        NotificationSound.setMuted(channel.id, !_soundOn.value)
         r.connectChannel(channel.id)
         refreshMessages(channel.id)
     }
 
+    /* ── per-channel «play sound on message» ── */
+    fun toggleSound() {
+        val ch = _currentChannel.value ?: return
+        val on = !_soundOn.value
+        _soundOn.value = on
+        NotificationSound.setMuted(ch.id, !on)
+        NativeLib.setSoundOnMessage(ch.id, on)
+    }
+
     /* ── DM (личные сообщения) ── */
 
     fun refreshDmConversations() {