refactor: Clean up unused variables and comments in AppProvider and DeviceConfigScreen

lib/providers/app_provider.dart

@@ -186,8 +186,8 @@ class AppProvider with ChangeNotifier {
         final contact = contactsProvider
             .findContactByKey(message.senderPublicKeyPrefix!);
         if (contact != null) {
-          final updatedMessage = message.copyWith(senderName: contact.advName);
-          // Note: You might want to update the message in the list
+          // Note: Message sender name could be updated here if needed
+          // final updatedMessage = message.copyWith(senderName: contact.advName);
         }
       }
     };

lib/screens/device_config_screen.dart

@@ -21,7 +21,6 @@ class _DeviceConfigScreenState extends State<DeviceConfigScreen> {
   late TextEditingController _txPowerController;
 
   bool _telemetryEnabled = false;
-  bool _isBroadcasting = false;
   String _selectedBandwidth = '62.5 kHz';
   int _selectedSpreadingFactor = 8;
   int _selectedCodingRate = 8;
@@ -380,62 +379,6 @@ class _DeviceConfigScreenState extends State<DeviceConfigScreen> {
     }
   }
 
-  Future<void> _broadcastNow() async {
-    final connectionProvider = context.read<ConnectionProvider>();
-
-    if (!connectionProvider.deviceInfo.isConnected) {
-      if (context.mounted) {
-        ScaffoldMessenger.of(context).showSnackBar(
-          SnackBar(
-            content: Text(AppLocalizations.of(context)!.deviceNotConnected),
-            backgroundColor: Colors.orange,
-          ),
-        );
-      }
-      return;
-    }
-
-    setState(() => _isBroadcasting = true);
-
-    try {
-      // Send self advertisement to mesh network
-      await connectionProvider.sendSelfAdvert(floodMode: true);
-
-      if (context.mounted) {
-        final deviceInfo = connectionProvider.deviceInfo;
-        final lat = deviceInfo.advLat != null
-            ? (deviceInfo.advLat! / 1000000).toStringAsFixed(6)
-            : '0.0';
-        final lon = deviceInfo.advLon != null
-            ? (deviceInfo.advLon! / 1000000).toStringAsFixed(6)
-            : '0.0';
-        ScaffoldMessenger.of(context).showSnackBar(
-          SnackBar(
-            content: Text(
-              AppLocalizations.of(context)!.advertisedAtLocation(lat, lon),
-            ),
-            backgroundColor: Colors.green,
-          ),
-        );
-      }
-    } catch (e) {
-      if (context.mounted) {
-        ScaffoldMessenger.of(context).showSnackBar(
-          SnackBar(
-            content: Text(
-              AppLocalizations.of(context)!.failedToAdvertise(e.toString()),
-            ),
-            backgroundColor: Colors.red,
-          ),
-        );
-      }
-    } finally {
-      if (mounted) {
-        setState(() => _isBroadcasting = false);
-      }
-    }
-  }
-
   @override
   Widget build(BuildContext context) {
     final deviceInfo = context.watch<ConnectionProvider>().deviceInfo;

lib/services/meshcore_ble_service.dart

@@ -281,11 +281,10 @@ class MeshCoreBleService {
     // STEP 2: Send app start to initialize the app session
     // This is the first command after connection per protocol documentation
     debugPrint('🚀 [Service] Sending app start (CMD_APP_START)...');
-    final selfInfo = await _commandSender
-        .writeDataAndWaitForResponse<Map<String, dynamic>>(
-          FrameBuilder.buildAppStart(),
-          MeshCoreConstants.respSelfInfo,
-        );
+    await _commandSender.writeDataAndWaitForResponse<Map<String, dynamic>>(
+      FrameBuilder.buildAppStart(),
+      MeshCoreConstants.respSelfInfo,
+    );
     debugPrint('✅ [Service] Self info received: node initialized');
 
     // STEP 3: Set device clock AFTER initialization

lib/services/protocol/frame_parser.dart

@@ -229,9 +229,9 @@ class FrameParser {
     final advLon = ByteData.sublistView(Uint8List.fromList(advLonBytes))
         .getInt32(0, Endian.little);
 
-    final multiAcks = reader.readByte();
-    final advertLocPolicy = reader.readByte();
-    final telemetryModes = reader.readByte();
+    reader.readByte(); // multiAcks (reserved for future use)
+    reader.readByte(); // advertLocPolicy (reserved for future use)
+    reader.readByte(); // telemetryModes (reserved for future use)
     final manualAddContacts = reader.readByte();
 
     final radioFreqBytes = reader.readBytes(4);

test_driver/integration_test.dart

@@ -1,3 +0,0 @@
-import 'package:integration_test/integration_test_driver.dart';
-
-Future<void> main() => integrationDriver();