refactor: UI 화면 통합 및 불필요한 파일 정리

- 모든 *_redesign.dart 파일을 기본 화면 파일로 통합
- 백업용 컨트롤러 파일들 제거 (*_controller.backup.dart)
- 사용하지 않는 예제 및 테스트 파일 제거
- Clean Architecture 적용 후 남은 정리 작업 완료
- 테스트 코드 정리 및 구조 개선 준비

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

lib/services/health_test_service.dart

@@ -77,8 +77,8 @@ class HealthTestService {
       final equipments = await _equipmentService.getEquipments(page: 1, perPage: 5);
       results['equipments'] = {
         'success': true,
-        'count': equipments.length,
-        'sample': equipments.take(2).map((e) => {
+        'count': equipments.items.length,
+        'sample': equipments.items.take(2).map((e) => {
           'id': e.id,
           'name': e.name,
           'manufacturer': e.manufacturer,
@@ -95,11 +95,11 @@ class HealthTestService {
     try {
       DebugLogger.log('입고지 API 체크 시작', tag: 'HEALTH_TEST');
       
-      final warehouses = await _warehouseService.getWarehouseLocations();
+      final warehousesResponse = await _warehouseService.getWarehouseLocations();
       results['warehouses'] = {
         'success': true,
-        'count': warehouses.length,
-        'sample': warehouses.take(2).map((w) => {
+        'count': warehousesResponse.items.length,
+        'sample': warehousesResponse.items.take(2).map((w) => {
           'id': w.id,
           'name': w.name,
           'address': w.address.toString(),
@@ -115,11 +115,11 @@ class HealthTestService {
     try {
       DebugLogger.log('회사 API 체크 시작', tag: 'HEALTH_TEST');
       
-      final companies = await _companyService.getCompanies();
+      final companiesResponse = await _companyService.getCompanies();
       results['companies'] = {
         'success': true,
-        'count': companies.length,
-        'sample': companies.take(2).map((c) => {
+        'count': companiesResponse.items.length,
+        'sample': companiesResponse.items.take(2).map((c) => {
           'id': c.id,
           'name': c.name,
           'companyTypes': c.companyTypes.map((t) => companyTypeToString(t)).toList(),
@@ -150,8 +150,8 @@ class HealthTestService {
           final equipments = await _equipmentService.getEquipments(page: 1, perPage: 10);
           return {
             'success': true,
-            'count': equipments.length,
-            'data': equipments.map((e) => e.toJson()).toList(),
+            'count': equipments.items.length,
+            'data': equipments.items.map((e) => e.toJson()).toList(),
           };
         } catch (e) {
           return {'success': false, 'error': e.toString()};
@@ -159,11 +159,11 @@ class HealthTestService {
         
       case 'warehouses':
         try {
-          final warehouses = await _warehouseService.getWarehouseLocations();
+          final warehousesResponse = await _warehouseService.getWarehouseLocations();
           return {
             'success': true,
-            'count': warehouses.length,
-            'data': warehouses.map((w) => {
+            'count': warehousesResponse.items.length,
+            'data': warehousesResponse.items.map((w) => {
               'id': w.id,
               'name': w.name,
               'address': w.address.toString(),
@@ -179,8 +179,8 @@ class HealthTestService {
           final companies = await _companyService.getCompanies();
           return {
             'success': true,
-            'count': companies.length,
-            'data': companies.map((c) => c.toJson()).toList(),
+            'count': companies.items.length,
+            'data': companies.items.map((c) => c.toJson()).toList(),
           };
         } catch (e) {
           return {'success': false, 'error': e.toString()};