Observe confirmed Bluetooth preferences from the application owner

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

@@ -111,7 +111,14 @@ class ChatApplication : Application() {
 
         /* One-time event callback registration — survives ViewModel recreation */
         NativeLib.setEventCallback(AppEventHandler)
-        com.utun.chat.data.BleRadio.init()
+        try { com.utun.chat.data.BleRadio.init() }
+        catch (e: Exception) { LogManager.addLog("ERROR", "discovery", "BLE initialization failed: $e") }
+        applicationScope.launch {
+            configProvider.changes.observe("Bluetooth", configProvider.bluetoothSettings).collect { flags ->
+                try { com.utun.chat.data.BleRadio.applySettings(flags) }
+                catch (e: Exception) { LogManager.addLog("ERROR", "discovery", "BLE preference application failed flags=$flags: $e") }
+            }
+        }
 
         /* Incoming-call system effects (wake + ringtone + notification) — app-scoped */
         IncomingCallManager.init()

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

@@ -45,7 +45,11 @@ class ConfigProvider(private val context: Context) {
     val changes = SettingsOperations()
     private val configFiles = ConfigFileStore { level, message -> LogManager.addLog(level, "CFG", message) }
     private val bleFlags = intPreferencesKey("bluetooth_flags")
-    fun getBleFlags(): Int = runBlocking { context.dataStore.data.first()[bleFlags] ?: 0 }
+    val bluetoothSettings: Flow<Int> = context.dataStore.data.map { preferences ->
+        val flags = preferences[bleFlags] ?: 0
+        if (flags !in 0..7) LogManager.addLog("WARN", "discovery", "Invalid stored BLE flags=$flags; disabling Bluetooth")
+        flags.takeIf { it in 0..7 } ?: 0
+    }.distinctUntilChanged()
     suspend fun setBleFlags(flags: Int) {
         require(flags in 0..7)
         context.dataStore.edit { it[bleFlags] = flags }