web: migrate health notifications to js_interop; add browser hook

- Replace dart:js with package:js in health_check_service_web.dart\n- Implement showHealthCheckNotification in web/index.html\n- Pin js dependency to ^0.6.7 for flutter_secure_storage_web compatibility

auth: harden AuthInterceptor + tests

- Allow overrideAuthRepository injection for testing\n- Normalize imports to package: paths\n- Add unit test covering token attach, 401→refresh→retry, and failure path\n- Add integration test skeleton gated by env vars

ui/data: map User.companyName to list column

- Add companyName to domain User\n- Map UserDto.company?.name\n- Render companyName in user_list

cleanup: remove legacy equipment table + unused code; minor warnings

- Remove _buildFlexibleTable and unused helpers\n- Remove unused zipcode details and cache retry constant\n- Fix null-aware and non-null assertions\n- Address child-last warnings in administrator dialog

docs: update AGENTS.md session context

lib/domain/usecases/auth/get_current_user_usecase.dart

@@ -1,34 +1,17 @@
 import 'package:dartz/dartz.dart';
-import '../../../services/auth_service.dart';
-import '../../../data/models/user/user_dto.dart';
+import '../../repositories/auth_repository.dart';
+import '../../../data/models/auth/auth_user.dart';
 import '../../../core/errors/failures.dart';
 import '../base_usecase.dart';
 
-/// 현재 로그인한 사용자 정보 조회 UseCase
-class GetCurrentUserUseCase extends UseCase<UserDto?, NoParams> {
-  final AuthService _authService;
+/// 현재 로그인한 사용자 정보 조회 UseCase (AuthRepository 기반)
+class GetCurrentUserUseCase extends UseCase<AuthUser, NoParams> {
+  final AuthRepository _authRepository;
 
-  GetCurrentUserUseCase(this._authService);
+  GetCurrentUserUseCase(this._authRepository);
 
   @override
-  Future<Either<Failure, UserDto?>> call(NoParams params) async {
-    try {
-      final user = await _authService.getCurrentUser();
-      
-      if (user == null) {
-        return Left(AuthFailure(
-          message: '로그인이 필요합니다.',
-          code: 'NOT_AUTHENTICATED',
-        ));
-      }
-      
-      // AuthUser를 UserDto로 변환 (임시로 null 반환)
-      return const Right(null);
-    } catch (e) {
-      return Left(UnknownFailure(
-        message: '사용자 정보를 가져오는 중 오류가 발생했습니다.',
-        originalError: e,
-      ));
-    }
+  Future<Either<Failure, AuthUser>> call(NoParams params) async {
+    return await _authRepository.getCurrentUser();
   }
-}
+}