feat: 대규모 코드베이스 개선 - 백엔드 통합성 강화 및 UI 일관성 완성

- CLAUDE.md 대폭 개선: 개발 가이드라인 및 프로젝트 상태 문서화
- 백엔드 API 통합: 모든 엔티티 간 Foreign Key 관계 완벽 구현
- UI 일관성 강화: shadcn_ui 컴포넌트 표준화 적용
- 데이터 모델 개선: DTO 및 모델 클래스 백엔드 스키마와 100% 일치
- 사용자 관리: 회사 연결, 중복 검사, 입력 검증 기능 추가
- 창고 관리: 우편번호 연결, 중복 검사 기능 강화
- 회사 관리: 우편번호 연결, 중복 검사 로직 구현
- 장비 관리: 불필요한 카테고리 필드 제거, 벤더-모델 관계 정리
- 우편번호 시스템: 검색 다이얼로그 Provider 버그 수정

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

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

lib/data/models/warehouse/warehouse_dto.freezed.dart

@@ -392,11 +392,11 @@ WarehouseRequestDto _$WarehouseRequestDtoFromJson(Map<String, dynamic> json) {
 
 /// @nodoc
 mixin _$WarehouseRequestDto {
-  @JsonKey(name: 'Name')
+  @JsonKey(name: 'name')
   String get name => throw _privateConstructorUsedError;
   @JsonKey(name: 'zipcodes_zipcode')
   String? get zipcodesZipcode => throw _privateConstructorUsedError;
-  @JsonKey(name: 'Remark')
+  @JsonKey(name: 'remark')
   String? get remark => throw _privateConstructorUsedError;
 
   /// Serializes this WarehouseRequestDto to a JSON map.
@@ -416,9 +416,9 @@ abstract class $WarehouseRequestDtoCopyWith<$Res> {
       _$WarehouseRequestDtoCopyWithImpl<$Res, WarehouseRequestDto>;
   @useResult
   $Res call(
-      {@JsonKey(name: 'Name') String name,
+      {@JsonKey(name: 'name') String name,
       @JsonKey(name: 'zipcodes_zipcode') String? zipcodesZipcode,
-      @JsonKey(name: 'Remark') String? remark});
+      @JsonKey(name: 'remark') String? remark});
 }
 
 /// @nodoc
@@ -466,9 +466,9 @@ abstract class _$$WarehouseRequestDtoImplCopyWith<$Res>
   @override
   @useResult
   $Res call(
-      {@JsonKey(name: 'Name') String name,
+      {@JsonKey(name: 'name') String name,
       @JsonKey(name: 'zipcodes_zipcode') String? zipcodesZipcode,
-      @JsonKey(name: 'Remark') String? remark});
+      @JsonKey(name: 'remark') String? remark});
 }
 
 /// @nodoc
@@ -509,21 +509,21 @@ class __$$WarehouseRequestDtoImplCopyWithImpl<$Res>
 @JsonSerializable()
 class _$WarehouseRequestDtoImpl implements _WarehouseRequestDto {
   const _$WarehouseRequestDtoImpl(
-      {@JsonKey(name: 'Name') required this.name,
+      {@JsonKey(name: 'name') required this.name,
       @JsonKey(name: 'zipcodes_zipcode') this.zipcodesZipcode,
-      @JsonKey(name: 'Remark') this.remark});
+      @JsonKey(name: 'remark') this.remark});
 
   factory _$WarehouseRequestDtoImpl.fromJson(Map<String, dynamic> json) =>
       _$$WarehouseRequestDtoImplFromJson(json);
 
   @override
-  @JsonKey(name: 'Name')
+  @JsonKey(name: 'name')
   final String name;
   @override
   @JsonKey(name: 'zipcodes_zipcode')
   final String? zipcodesZipcode;
   @override
-  @JsonKey(name: 'Remark')
+  @JsonKey(name: 'remark')
   final String? remark;
 
   @override
@@ -565,22 +565,22 @@ class _$WarehouseRequestDtoImpl implements _WarehouseRequestDto {
 
 abstract class _WarehouseRequestDto implements WarehouseRequestDto {
   const factory _WarehouseRequestDto(
-          {@JsonKey(name: 'Name') required final String name,
+          {@JsonKey(name: 'name') required final String name,
           @JsonKey(name: 'zipcodes_zipcode') final String? zipcodesZipcode,
-          @JsonKey(name: 'Remark') final String? remark}) =
+          @JsonKey(name: 'remark') final String? remark}) =
       _$WarehouseRequestDtoImpl;
 
   factory _WarehouseRequestDto.fromJson(Map<String, dynamic> json) =
       _$WarehouseRequestDtoImpl.fromJson;
 
   @override
-  @JsonKey(name: 'Name')
+  @JsonKey(name: 'name')
   String get name;
   @override
   @JsonKey(name: 'zipcodes_zipcode')
   String? get zipcodesZipcode;
   @override
-  @JsonKey(name: 'Remark')
+  @JsonKey(name: 'remark')
   String? get remark;
 
   /// Create a copy of WarehouseRequestDto
@@ -598,11 +598,11 @@ WarehouseUpdateRequestDto _$WarehouseUpdateRequestDtoFromJson(
 
 /// @nodoc
 mixin _$WarehouseUpdateRequestDto {
-  @JsonKey(name: 'Name')
+  @JsonKey(name: 'name')
   String? get name => throw _privateConstructorUsedError;
   @JsonKey(name: 'zipcodes_zipcode')
   String? get zipcodesZipcode => throw _privateConstructorUsedError;
-  @JsonKey(name: 'Remark')
+  @JsonKey(name: 'remark')
   String? get remark => throw _privateConstructorUsedError;
 
   /// Serializes this WarehouseUpdateRequestDto to a JSON map.
@@ -622,9 +622,9 @@ abstract class $WarehouseUpdateRequestDtoCopyWith<$Res> {
       _$WarehouseUpdateRequestDtoCopyWithImpl<$Res, WarehouseUpdateRequestDto>;
   @useResult
   $Res call(
-      {@JsonKey(name: 'Name') String? name,
+      {@JsonKey(name: 'name') String? name,
       @JsonKey(name: 'zipcodes_zipcode') String? zipcodesZipcode,
-      @JsonKey(name: 'Remark') String? remark});
+      @JsonKey(name: 'remark') String? remark});
 }
 
 /// @nodoc
@@ -674,9 +674,9 @@ abstract class _$$WarehouseUpdateRequestDtoImplCopyWith<$Res>
   @override
   @useResult
   $Res call(
-      {@JsonKey(name: 'Name') String? name,
+      {@JsonKey(name: 'name') String? name,
       @JsonKey(name: 'zipcodes_zipcode') String? zipcodesZipcode,
-      @JsonKey(name: 'Remark') String? remark});
+      @JsonKey(name: 'remark') String? remark});
 }
 
 /// @nodoc
@@ -719,21 +719,21 @@ class __$$WarehouseUpdateRequestDtoImplCopyWithImpl<$Res>
 @JsonSerializable()
 class _$WarehouseUpdateRequestDtoImpl implements _WarehouseUpdateRequestDto {
   const _$WarehouseUpdateRequestDtoImpl(
-      {@JsonKey(name: 'Name') this.name,
+      {@JsonKey(name: 'name') this.name,
       @JsonKey(name: 'zipcodes_zipcode') this.zipcodesZipcode,
-      @JsonKey(name: 'Remark') this.remark});
+      @JsonKey(name: 'remark') this.remark});
 
   factory _$WarehouseUpdateRequestDtoImpl.fromJson(Map<String, dynamic> json) =>
       _$$WarehouseUpdateRequestDtoImplFromJson(json);
 
   @override
-  @JsonKey(name: 'Name')
+  @JsonKey(name: 'name')
   final String? name;
   @override
   @JsonKey(name: 'zipcodes_zipcode')
   final String? zipcodesZipcode;
   @override
-  @JsonKey(name: 'Remark')
+  @JsonKey(name: 'remark')
   final String? remark;
 
   @override
@@ -775,22 +775,22 @@ class _$WarehouseUpdateRequestDtoImpl implements _WarehouseUpdateRequestDto {
 
 abstract class _WarehouseUpdateRequestDto implements WarehouseUpdateRequestDto {
   const factory _WarehouseUpdateRequestDto(
-          {@JsonKey(name: 'Name') final String? name,
+          {@JsonKey(name: 'name') final String? name,
           @JsonKey(name: 'zipcodes_zipcode') final String? zipcodesZipcode,
-          @JsonKey(name: 'Remark') final String? remark}) =
+          @JsonKey(name: 'remark') final String? remark}) =
       _$WarehouseUpdateRequestDtoImpl;
 
   factory _WarehouseUpdateRequestDto.fromJson(Map<String, dynamic> json) =
       _$WarehouseUpdateRequestDtoImpl.fromJson;
 
   @override
-  @JsonKey(name: 'Name')
+  @JsonKey(name: 'name')
   String? get name;
   @override
   @JsonKey(name: 'zipcodes_zipcode')
   String? get zipcodesZipcode;
   @override
-  @JsonKey(name: 'Remark')
+  @JsonKey(name: 'remark')
   String? get remark;
 
   /// Create a copy of WarehouseUpdateRequestDto