feat: Add library directive to multiple BLoC and service files for improved organization

lib/blocs/auth/auth_bloc.dart

@@ -19,6 +19,7 @@
 /// - [AuthAppleSignInRequested]: Processes Apple authentication
 /// - [AuthSignOutRequested]: Processes user sign-out
 /// - [AuthPasswordResetRequested]: Processes password reset requests
+library;
 import 'package:flutter_bloc/flutter_bloc.dart';
 import '../../repositories/auth_repository.dart';
 import 'auth_event.dart';