Enhance debug logging for development builds, update build mode to debug, and improve Bluetooth connection handling

Author: MrAlders0n

.claude/settings.local.json

@@ -12,7 +12,8 @@
       "Bash(flutter build:*)",
       "Bash(flutter doctor:*)",
       "Bash(flutter create:*)",
-      "Bash(find:*)"
+      "Bash(find:*)",
+      "Bash(grep:*)"
     ]
   }
 }

android/local.properties

@@ -1,5 +1,5 @@
 sdk.dir=/opt/homebrew/share/android-commandlinetools
 flutter.sdk=/opt/homebrew/share/flutter
-flutter.buildMode=release
+flutter.buildMode=debug
 flutter.versionName=1.0.0
-flutter.versionCode=1769177495
+flutter.versionCode=1

lib/providers/app_state_provider.dart

@@ -284,6 +284,9 @@ class AppStateProvider extends ChangeNotifier {
     _autoPingTimer = AutoPingTimer(_statusMessageService);
     _rxWindowTimer = RxWindowTimer(_statusMessageService);
 
+    // Auto-enable debug logging for development builds
+    await _autoEnableDebugLogsIfDevelopmentBuild();
+
     // Initialize channel service with Public channel only (regional channels added after auth)
     await ChannelService.initializePublicChannel();
     debugLog('[APP] Channel service initialized (Public channel only)');
@@ -1807,6 +1810,24 @@ class AppStateProvider extends ChangeNotifier {
   // Debug File Logging (Mobile Only)
   // ============================================
 
+  /// Auto-enable debug file logging for development builds
+  Future<void> _autoEnableDebugLogsIfDevelopmentBuild() async {
+    if (kIsWeb) return; // File logging not available on web
+
+    if (AppConstants.isDevelopmentBuild) {
+      debugLog('[INIT] Development build detected (${AppConstants.appVersion}), auto-enabling debug logs');
+      try {
+        await DebugFileLogger.enable();
+        _debugLogsEnabled = true;
+        await _refreshDebugLogFiles();
+      } catch (e) {
+        debugError('[INIT] Failed to auto-enable debug logs: $e');
+      }
+    } else {
+      debugLog('[INIT] Release build (${AppConstants.appVersion}), debug logs disabled by default');
+    }
+  }
+
   /// Enable debug file logging
   ///
   /// Creates a new log file and starts writing debug output to it.

lib/screens/settings_screen.dart

@@ -490,7 +490,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
               ),
               subtitle: Text(
                 appState.debugLogsEnabled
-                    ? 'Writing logs to file'
+                    ? AppConstants.isDevelopmentBuild
+                        ? 'Auto-enabled for development build'
+                        : 'Writing logs to file'
                     : 'Enable to save debug logs to device',
               ),
               value: appState.debugLogsEnabled,

lib/services/bluetooth/mobile_bluetooth.dart

@@ -235,7 +235,10 @@ class MobileBluetoothService implements BluetoothService {
 
         // Connect to GATT server FIRST (before subscribing to state changes)
         print('[BLE] Connecting to GATT...');
-        await _bleDevice!.connect(timeout: const Duration(seconds: 15));
+        await _bleDevice!.connect(
+          timeout: const Duration(seconds: 15),
+          mtu: null,  // Disable automatic MTU negotiation to avoid race condition errors on Android
+        );
         print('[BLE] GATT connected');
 
         // NOW subscribe to connection state changes (after we're connected)

lib/utils/constants.dart

@@ -14,6 +14,16 @@ class AppConstants {
       ? _buildVersion
       : 'APP-${DateTime.now().millisecondsSinceEpoch ~/ 1000}';
 
+  /// Returns true if the app version is a development build (EPOCH format)
+  /// Development builds: APP-<unix_epoch_seconds> (e.g., APP-1705273849) - digits only
+  /// Release builds: APP-<x.y.z> (e.g., APP-1.2.3) - contains dots
+  static bool get isDevelopmentBuild {
+    // EPOCH format: APP- followed by digits only (no dots)
+    // Release format: APP- followed by semantic version with dots (e.g., APP-1.2.3)
+    final epochPattern = RegExp(r'^APP-\d+$');
+    return epochPattern.hasMatch(appVersion);
+  }
+
   /// Application name
   static const String appName = 'MeshMapper';