fix

lib/features/auth/auth.dart

@@ -0,0 +1,15 @@
+/// Authentication Feature
+///
+/// Complete authentication feature following clean architecture.
+/// Includes login, registration, and user management.
+///
+/// Usage:
+/// ```dart
+/// import 'package:retail/features/auth/auth.dart';
+/// ```
+library;
+
+// Export all layers
+export 'data/data.dart';
+export 'domain/domain.dart';
+export 'presentation/presentation.dart';