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/company/create_company_usecase.dart

@@ -1,5 +1,5 @@
 import 'package:dartz/dartz.dart';
-import '../../../services/company_service.dart';
+import '../../repositories/company_repository.dart';
 import '../../../models/company_model.dart';
 import '../../../core/errors/failures.dart';
 import '../base_usecase.dart';
@@ -15,9 +15,10 @@ class CreateCompanyParams {
 
 /// 회사 생성 UseCase
 class CreateCompanyUseCase extends UseCase<Company, CreateCompanyParams> {
-  final CompanyService _companyService;
+  // 레포지토리 기반으로 마이그레이션
+  final CompanyRepository _companyRepository;
 
-  CreateCompanyUseCase(this._companyService);
+  CreateCompanyUseCase(this._companyRepository);
 
   @override
   Future<Either<Failure, Company>> call(CreateCompanyParams params) async {
@@ -28,8 +29,8 @@ class CreateCompanyUseCase extends UseCase<Company, CreateCompanyParams> {
         return Left(validationResult);
       }
 
-      final company = await _companyService.createCompany(params.company);
-      return Right(company);
+      final result = await _companyRepository.createCompany(params.company);
+      return result;
     } on ServerFailure catch (e) {
       return Left(ServerFailure(
         message: e.message,
@@ -81,4 +82,4 @@ class CreateCompanyUseCase extends UseCase<Company, CreateCompanyParams> {
 
     return null;
   }
-}
+}