style(android): use Offline bridge status

apps/android/app/src/main/java/com/steipete/clawdis/node/NodeRuntime.kt

@@ -45,7 +45,7 @@ class NodeRuntime(context: Context) {
   private val _isConnected = MutableStateFlow(false)
   val isConnected: StateFlow<Boolean> = _isConnected.asStateFlow()
 
-  private val _statusText = MutableStateFlow("Not connected")
+  private val _statusText = MutableStateFlow("Offline")
   val statusText: StateFlow<String> = _statusText.asStateFlow()
 
   private val _serverName = MutableStateFlow<String?>(null)

apps/android/app/src/main/java/com/steipete/clawdis/node/bridge/BridgeSession.kt

@@ -76,7 +76,7 @@ class BridgeSession(
     scope.launch(Dispatchers.IO) {
       job?.cancelAndJoin()
       job = null
-      onDisconnected("Disconnected")
+      onDisconnected("Offline")
     }
   }