사용자 마스터 UI 및 테스트 구현

lib/features/masters/group/domain/repositories/group_repository.dart

@@ -0,0 +1,12 @@
+import 'package:superport_v2/core/common/models/paginated_result.dart';
+
+import '../entities/group.dart';
+
+abstract class GroupRepository {
+  Future<PaginatedResult<Group>> list({
+    int page = 1,
+    int pageSize = 20,
+    String? query,
+    bool? isActive,
+  });
+}