결재 템플릿 단계 적용 구현

- ApprovalTemplate 엔티티·DTO·원격 리포지토리 추가
- ApprovalController에 템플릿 로딩/적용 상태와 assignSteps 호출 연동
- ApprovalPage 단계 탭에 템플릿 선택 UI 및 적용 확인 다이얼로그 구현
- 템플릿 적용 단위 테스트와 IMPLEMENTATION_TASKS 현황 갱신

lib/features/masters/menu/data/repositories/menu_repository_remote.dart

@@ -0,0 +1,77 @@
+import 'package:dio/dio.dart';
+import 'package:superport_v2/core/common/models/paginated_result.dart';
+import 'package:superport_v2/core/network/api_client.dart';
+
+import '../../domain/entities/menu.dart';
+import '../../domain/repositories/menu_repository.dart';
+import '../dtos/menu_dto.dart';
+
+class MenuRepositoryRemote implements MenuRepository {
+  MenuRepositoryRemote({required ApiClient apiClient}) : _api = apiClient;
+
+  final ApiClient _api;
+
+  static const _basePath = '/menus';
+
+  @override
+  Future<PaginatedResult<MenuItem>> list({
+    int page = 1,
+    int pageSize = 20,
+    String? query,
+    int? parentId,
+    bool? isActive,
+    bool includeDeleted = false,
+  }) async {
+    final response = await _api.get<Map<String, dynamic>>(
+      _basePath,
+      query: {
+        'page': page,
+        'page_size': pageSize,
+        if (query != null && query.isNotEmpty) 'q': query,
+        if (parentId != null) 'parent_id': parentId,
+        if (isActive != null) 'is_active': isActive,
+        if (includeDeleted) 'include_deleted': true,
+        'include': 'parent',
+      },
+      options: Options(responseType: ResponseType.json),
+    );
+    return MenuDto.parsePaginated(response.data ?? const {});
+  }
+
+  @override
+  Future<MenuItem> create(MenuInput input) async {
+    final response = await _api.post<Map<String, dynamic>>(
+      _basePath,
+      data: input.toPayload(),
+      options: Options(responseType: ResponseType.json),
+    );
+    final data = (response.data?['data'] as Map<String, dynamic>?) ?? {};
+    return MenuDto.fromJson(data).toEntity();
+  }
+
+  @override
+  Future<MenuItem> update(int id, MenuInput input) async {
+    final response = await _api.patch<Map<String, dynamic>>(
+      '$_basePath/$id',
+      data: input.toPayload(),
+      options: Options(responseType: ResponseType.json),
+    );
+    final data = (response.data?['data'] as Map<String, dynamic>?) ?? {};
+    return MenuDto.fromJson(data).toEntity();
+  }
+
+  @override
+  Future<void> delete(int id) async {
+    await _api.delete<void>('$_basePath/$id');
+  }
+
+  @override
+  Future<MenuItem> restore(int id) async {
+    final response = await _api.post<Map<String, dynamic>>(
+      '$_basePath/$id/restore',
+      options: Options(responseType: ResponseType.json),
+    );
+    final data = (response.data?['data'] as Map<String, dynamic>?) ?? {};
+    return MenuDto.fromJson(data).toEntity();
+  }
+}