feat: Equipment DTO 호환성 수정 전 백업 커밋

- Equipment DTO 필드명 변경 (name → equipment_number 등) 완료
- Phase 1-7 파생 수정사항 체계적 진행 예정
- 통합 모델 정리, Controller 동기화, UI 업데이트 예정

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

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

lib/core/services/lookups_service.dart

@@ -7,6 +7,7 @@ import 'package:superport/core/errors/failures.dart';
 import 'package:superport/core/utils/debug_logger.dart';
 import 'package:superport/data/datasources/remote/lookup_remote_datasource.dart';
 import 'package:superport/data/models/lookups/lookup_data.dart';
+import 'dart:async' show unawaited;
 
 /// 전역 Lookups 캐싱 서비스 (Singleton 패턴)
 @LazySingleton()
@@ -133,14 +134,30 @@ class LookupsService {
     );
   }
 
-  /// 장비 카테고리 목록 조회
-  Either<Failure, List<CategoryItem>> getEquipmentCategories() {
+  /// 장비 카테고리 조합 목록 조회
+  Either<Failure, List<CategoryCombinationItem>> getEquipmentCategories() {
     return getAllLookups().fold(
       (failure) => Left(failure),
       (data) => Right(data.equipmentCategories),
     );
   }
 
+  /// 회사 목록 조회
+  Either<Failure, List<LookupItem>> getCompanies() {
+    return getAllLookups().fold(
+      (failure) => Left(failure),
+      (data) => Right(data.companies),
+    );
+  }
+
+  /// 창고 목록 조회
+  Either<Failure, List<LookupItem>> getWarehouses() {
+    return getAllLookups().fold(
+      (failure) => Left(failure),
+      (data) => Right(data.warehouses),
+    );
+  }
+
   /// 장비 상태 목록 조회
   Either<Failure, List<StatusItem>> getEquipmentStatuses() {
     return getAllLookups().fold(
@@ -179,6 +196,62 @@ class LookupsService {
     );
   }
 
+  /// Equipment 폼용 매번 API 호출 메서드 (캐싱 없이)
+  Future<Either<Failure, LookupData>> getLookupDataForEquipmentForm() async {
+    DebugLogger.log('Equipment 폼용 Lookups 데이터 API 호출', tag: 'LOOKUPS');
+    return await _dataSource.getAllLookups();
+  }
+
+  /// 대분류 목록 추출 (Equipment 폼용)
+  Future<Either<Failure, List<String>>> getCategory1List() async {
+    final result = await getLookupDataForEquipmentForm();
+    return result.fold(
+      (failure) => Left(failure),
+      (data) {
+        final category1List = data.equipmentCategories
+            .map((item) => item.category1)
+            .toSet()
+            .toList()
+            ..sort();
+        return Right(category1List);
+      },
+    );
+  }
+
+  /// 중분류 목록 추출 (Equipment 폼용)
+  Future<Either<Failure, List<String>>> getCategory2List(String category1) async {
+    final result = await getLookupDataForEquipmentForm();
+    return result.fold(
+      (failure) => Left(failure),
+      (data) {
+        final category2List = data.equipmentCategories
+            .where((item) => item.category1 == category1)
+            .map((item) => item.category2)
+            .toSet()
+            .toList()
+            ..sort();
+        return Right(category2List);
+      },
+    );
+  }
+
+  /// 소분류 목록 추출 (Equipment 폼용)
+  Future<Either<Failure, List<String>>> getCategory3List(String category1, String category2) async {
+    final result = await getLookupDataForEquipmentForm();
+    return result.fold(
+      (failure) => Left(failure),
+      (data) {
+        final category3List = data.equipmentCategories
+            .where((item) => item.category1 == category1 && item.category2 == category2)
+            .map((item) => item.category3)
+            .toSet()
+            .toList()
+            ..sort();
+        return Right(category3List);
+      },
+    );
+  }
+
   /// 캐시 통계 정보
   Map<String, dynamic> getCacheStats() {
     return {
@@ -191,6 +264,8 @@ class LookupsService {
       'equipment_names_count': _cachedData?.equipmentNames.length ?? 0,
       'equipment_categories_count': _cachedData?.equipmentCategories.length ?? 0,
       'equipment_statuses_count': _cachedData?.equipmentStatuses.length ?? 0,
+      'companies_count': _cachedData?.companies.length ?? 0,
+      'warehouses_count': _cachedData?.warehouses.length ?? 0,
     };
   }
 
@@ -212,8 +287,10 @@ extension LookupsServiceExtensions on LookupsService {
       (failure) => Left(failure),
       (manufacturers) {
         final Map<int, String> items = {};
-        for (final manufacturer in manufacturers) {
-          items[manufacturer.id] = manufacturer.name;
+        for (int i = 0; i < manufacturers.length; i++) {
+          final manufacturer = manufacturers[i];
+          final id = manufacturer.id ?? (i + 1); // id가 null이면 인덱스 기반 ID 사용
+          items[id] = manufacturer.name;
         }
         return Right(items);
       },
@@ -233,4 +310,51 @@ extension LookupsServiceExtensions on LookupsService {
       },
     );
   }
+
+  /// Equipment 폼용 드롭다운 리스트 생성 (매번 API 호출)
+  Future<Either<Failure, Map<String, dynamic>>> getEquipmentFormDropdownData() async {
+    final result = await getLookupDataForEquipmentForm();
+    return result.fold(
+      (failure) => Left(failure),
+      (data) {
+        // 제조사 리스트 (드롭다운 + 직접입력용)
+        final List<String> manufacturers = data.manufacturers.map((item) => item.name).toList();
+        
+        // 장비명 리스트 (드롭다운 + 직접입력용)
+        final List<String> equipmentNames = data.equipmentNames.map((item) => item.name).toList();
+        
+        // 회사 리스트 (드롭다운 전용)
+        final Map<int, String> companies = {};
+        for (final company in data.companies) {
+          if (company.id != null) {
+            companies[company.id!] = company.name;
+          }
+        }
+        
+        // 창고 리스트 (드롭다운 전용)
+        final Map<int, String> warehouses = {};
+        for (final warehouse in data.warehouses) {
+          if (warehouse.id != null) {
+            warehouses[warehouse.id!] = warehouse.name;
+          }
+        }
+        
+        // 대분류 리스트 (드롭다운 + 직접입력용)
+        final List<String> category1List = data.equipmentCategories
+            .map((item) => item.category1)
+            .toSet()
+            .toList()
+            ..sort();
+            
+        return Right({
+          'manufacturers': manufacturers,
+          'equipment_names': equipmentNames,
+          'companies': companies,
+          'warehouses': warehouses,
+          'category1_list': category1List,
+          'category_combinations': data.equipmentCategories,
+        });
+      },
+    );
+  }
 }