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/injection_container.dart

@@ -17,7 +17,7 @@ import 'data/datasources/remote/maintenance_remote_datasource.dart';
 import 'data/datasources/remote/user_remote_datasource.dart';
 import 'data/datasources/remote/warehouse_location_remote_datasource.dart';
 import 'data/datasources/remote/warehouse_remote_datasource.dart';
-import 'data/datasources/interceptors/api_interceptor.dart';
+// import 'data/datasources/interceptors/api_interceptor.dart'; // Legacy interceptor (no longer used)
 
 // Repositories
 import 'domain/repositories/administrator_repository.dart';
@@ -137,7 +137,7 @@ import 'screens/administrator/controllers/administrator_controller.dart';
 final sl = GetIt.instance;
 final getIt = sl; // Alias for compatibility
 
-Future<void> init() async {
+  Future<void> init() async {
   // External
   final sharedPreferences = await SharedPreferences.getInstance();
   sl.registerLazySingleton(() => sharedPreferences);
@@ -145,29 +145,12 @@ Future<void> init() async {
   // Core
   sl.registerLazySingleton(() => SecureStorage());
   sl.registerLazySingleton(() => const FlutterSecureStorage());
-  sl.registerLazySingleton(() => ApiInterceptor(sl()));
   
-  // API Client
+  // API Client (centralized Dio + interceptors)
   sl.registerLazySingleton(() => ApiClient());
   
-  // Dio
-  sl.registerLazySingleton<Dio>(() {
-    final dio = Dio();
-    dio.options = BaseOptions(
-      baseUrl: 'http://43.201.34.104:8080/api/v1',
-      connectTimeout: const Duration(seconds: 30),
-      receiveTimeout: const Duration(seconds: 30),
-      headers: {
-        'Content-Type': 'application/json',
-      },
-    );
-    dio.interceptors.add(sl<ApiInterceptor>());
-    dio.interceptors.add(LogInterceptor(
-      requestBody: true,
-      responseBody: true,
-    ));
-    return dio;
-  });
+  // Dio — use ApiClient's configured Dio to avoid divergence
+  sl.registerLazySingleton<Dio>(() => sl<ApiClient>().dio);
   
   // Data Sources
   sl.registerLazySingleton<AdministratorRemoteDataSource>(
@@ -252,21 +235,21 @@ Future<void> init() async {
   
   // Use Cases - Auth
   sl.registerLazySingleton(() => LoginUseCase(sl<AuthRepository>()));  // Repository 사용
-  sl.registerLazySingleton(() => LogoutUseCase(sl<AuthService>()));  // Service 사용 (아직 미수정)
-  sl.registerLazySingleton(() => GetCurrentUserUseCase(sl<AuthService>()));  // Service 사용 (아직 미수정)
+  sl.registerLazySingleton(() => LogoutUseCase(sl<AuthRepository>()));
+  sl.registerLazySingleton(() => GetCurrentUserUseCase(sl<AuthRepository>()));
   sl.registerLazySingleton(() => CheckAuthStatusUseCase(sl<AuthRepository>()));  // Repository 사용
-  sl.registerLazySingleton(() => RefreshTokenUseCase(sl<AuthService>()));  // Service 사용 (아직 미수정)
+  sl.registerLazySingleton(() => RefreshTokenUseCase(sl<AuthRepository>()));
   
   // Use Cases - Company
-  sl.registerLazySingleton(() => GetCompaniesUseCase(sl<CompanyRepository>()));  // Repository 사용
-  sl.registerLazySingleton(() => GetCompanyDetailUseCase(sl<CompanyService>()));  // Service 사용 (아직 미수정)
-  sl.registerLazySingleton(() => CreateCompanyUseCase(sl<CompanyService>()));  // Service 사용 (아직 미수정)
-  sl.registerLazySingleton(() => UpdateCompanyUseCase(sl<CompanyService>()));  // Service 사용 (아직 미수정)
-  sl.registerLazySingleton(() => DeleteCompanyUseCase(sl<CompanyService>()));  // Service 사용 (아직 미수정)
-  sl.registerLazySingleton(() => ToggleCompanyStatusUseCase(sl<CompanyService>()));  // Service 사용 (아직 미수정)
-  sl.registerLazySingleton(() => GetCompanyHierarchyUseCase(sl<CompanyService>()));  // Service 사용
-  sl.registerLazySingleton(() => UpdateParentCompanyUseCase(sl<CompanyService>()));  // Service 사용
-  sl.registerLazySingleton(() => ValidateCompanyDeletionUseCase(sl<CompanyService>()));  // Service 사용
+  sl.registerLazySingleton(() => GetCompaniesUseCase(sl<CompanyRepository>()));
+  sl.registerLazySingleton(() => GetCompanyDetailUseCase(sl<CompanyRepository>()));
+  sl.registerLazySingleton(() => CreateCompanyUseCase(sl<CompanyRepository>()));
+  sl.registerLazySingleton(() => UpdateCompanyUseCase(sl<CompanyRepository>()));
+  sl.registerLazySingleton(() => DeleteCompanyUseCase(sl<CompanyRepository>()));
+  sl.registerLazySingleton(() => ToggleCompanyStatusUseCase(sl<CompanyRepository>()));
+  sl.registerLazySingleton(() => GetCompanyHierarchyUseCase(sl<CompanyRepository>()));
+  sl.registerLazySingleton(() => UpdateParentCompanyUseCase(sl<CompanyRepository>()));
+  sl.registerLazySingleton(() => ValidateCompanyDeletionUseCase(sl<CompanyRepository>()));
   sl.registerLazySingleton(() => RestoreCompanyUseCase(sl<CompanyRepository>()));
   
   // Use Cases - User (Repository 사용으로 마이그레이션 완료)
@@ -424,4 +407,4 @@ Future<void> init() async {
   sl.registerFactory(() => InventoryHistoryController(
     service: sl<InventoryHistoryService>(),
   ));
-}
+}