feat(ai-character): 관리자 API Phase 1 기반을 추가한다

docs/20260724_AI캐릭터_관리자_API/prd.md

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+# PRD: AI 캐릭터 관리자 API
+
+## 1. Overview
+운영자가 AI 캐릭터용 Member로 직접 로그인하지 않고, `ADMIN` 권한으로 선택한 AI 캐릭터의 크리에이터 채널 자산을 대리 관리하는 신규 v2 관리자 API를 제공한다.
+
+---
+
+## 2. Problem
+- AI 캐릭터용 `Member(memberKind = AI_CHARACTER)`는 직접 로그인할 수 없어야 하지만, 운영자는 캐릭터의 콘텐츠, 시리즈, 커뮤니티, FanTalk 답변을 관리해야 한다.
+- 기존 기능은 `creatorMember.id` 기반으로 흩어져 있으며, 관리자 frontend가 레거시 endpoint를 조합하면 권한, 소유권, soft delete 의미가 일관되지 않을 수 있다.
+- 기존 creator/admin service 일부에는 소유권 검증이 약한 경로가 있어, 단순 위임만으로는 다른 캐릭터나 HUMAN creator 자원을 변경할 위험이 있다.
+- 기존 legacy/public API 계약은 유지해야 하므로 신규 관리자 표면은 별도 v2 경계로 제공되어야 한다.
+
+---
+
+## 3. Goals
+- 신규 prefix `/api/v2/admin/ai-characters/**`는 JWT `auth` claim의 `ROLE_ADMIN`과 JWT subject로 조회한 현재 DB
+  `Member.role == ADMIN`을 모두 만족하는 요청만 허용한다.
+- 모든 신규 target endpoint는 외부 대상 식별자로 `characterId`를 받고, 서버가 `ChatCharacter.creatorMember`를 내부 행위자로 해석한다. 단, 캐릭터 목록/검색은 아직 선택된 target이 없어 `characterId`를 받지 않고, 캐릭터 생성은 새 `ChatCharacter`를 만드는 endpoint라 path `characterId`를 받지 않는다.
+- target 해석 시 `ChatCharacter` 존재, `creatorMember` 존재, `creatorMember.role == CREATOR`, `creatorMember.memberKind == AI_CHARACTER`를 모두 검증한다.
+- 검증 실패 시 4xx로 거부하고 DB, S3, 외부 캐릭터 API, 이벤트 발행 등 후속 부작용을 만들지 않는다.
+- 캐릭터, 오디오 콘텐츠, 시리즈, 커뮤니티 게시글, FanTalk 답변, 오디오 signed URL을 신규 관리자 API에서 관리한다.
+- 기존 legacy/public endpoint의 URI, 성공·오류 HTTP status, response body, message/i18n을 포함한 외부 계약은 변경하지 않는다.
+  단, 캐릭터 관리자 frontend가 기존 관리자 인증을 재사용할 수 있도록 `/admin/member/login`, `/member/logout`의 CORS 허용
+  Origin만 path-specific으로 확장한다.
+- 내부 구현은 신규 v2 controller/facade/application 경계를 두고, 기존 entity/repository/S3/CloudFront/event 컴포넌트는 테스트로 고정한 뒤 선택적으로 재사용한다.
+
+---
+
+## 4. Non-Goals
+- 이번 PRD는 관리자 API backend 요구사항과 구현 계획만 포함하며, 관리자 UI/frontend 구현은 포함하지 않는다.
+- AI 캐릭터용 Member의 access token, refresh token, 임시 세션, impersonation 로그인은 만들지 않는다.
+- `creatorMemberId`를 관리자 frontend의 필수 입력으로 노출하지 않는다.
+- HUMAN creator를 이 API로 대리 관리하지 않는다.
+- 위 두 공유 인증 경로의 CORS 허용 Origin 확장 외 기존 legacy/public endpoint 변경, 폐기, deprecation, schema 변경은 포함하지
+  않는다.
+- 기존 external character API business contract 변경은 포함하지 않으며, 변경이 필요하면 재확인한다.
+- 기존 soft delete 의미 변경은 포함하지 않으며, 변경이 필요하면 재확인한다.
+- 물리 삭제와 연관 데이터 cascade 삭제는 포함하지 않는다.
+- 신규 DB schema/DDL 또는 `ChatCharacter`-`Member` 관계 모델 변경은 포함하지 않는다.
+- 라이브, DM, 후원, 정산, 알림 설정, 랭킹 관리, 콘텐츠 구매/좋아요/댓글, 커뮤니티 구매/좋아요/댓글 관리는 포함하지 않는다.
+- FanTalk 원글 작성, 일반 사용자 대리 작성, nested reply 작성은 포함하지 않는다.
+- `AudioContentCloudFront` 복사/이동, signed URL 신규 dependency 추가는 포함하지 않는다.
+
+---
+
+## 5. Target Users
+- 운영자: AI 캐릭터를 대신해 캐릭터 프로필, 콘텐츠, 시리즈, 커뮤니티 게시글, FanTalk 답변을 관리하는 관리자
+- 관리자 frontend: 신규 v2 AI 캐릭터 관리자 API만으로 In-Scope 작업을 수행해야 하는 클라이언트
+- 서버 개발자: 기존 creator 기능을 회귀시키지 않으면서 AI 캐릭터 대리 관리 경계를 유지해야 하는 개발자
+
+---
+
+## 6. User Stories
+- 운영자는 AI 캐릭터 목록을 검색하고 상세 정보를 확인한 뒤 생성, 수정, 비활성화하고 싶다.
+- 운영자는 선택한 AI 캐릭터 소유 오디오 콘텐츠를 조회, 생성, 수정, soft delete하고 관리자 화면에서 재생 가능한 signed URL을 받고 싶다.
+- 운영자는 선택한 AI 캐릭터 소유 시리즈를 조회, 생성, 수정, soft delete하고 콘텐츠 연결/해제/순서를 관리하고 싶다.
+- 운영자는 선택한 AI 캐릭터 소유 커뮤니티 게시글을 작성, 수정, 고정/해제, soft delete하고 싶다.
+- 운영자는 선택한 AI 캐릭터가 자신의 활성 root FanTalk에 creator reply를 작성하게 하고 싶다.
+- 서버는 다른 AI 캐릭터나 HUMAN creator의 resource ID가 전달되면 변경 없이 4xx로 거부해야 한다.
+
+---
+
+## 7. Core Features
+
+### Feature A. 공통 인증, 인가, target 해석
+
+#### Requirements
+- 모든 신규 prefix endpoint는 JWT `ROLE_ADMIN`과 현재 DB `Member.role == ADMIN`을 독립적으로 모두 검증한다.
+- JWT가 없거나 잘못됐거나 만료·폐기된 경우는 401, JWT role과 현재 DB role 중 하나라도 ADMIN이 아닌 경우는 403으로
+  처리한다.
+- JWT에는 `ROLE_ADMIN`이 남아 있지만 현재 DB role이 강등된 stale claim도 403으로 거부한다.
+- 모든 domain write/read는 `characterId`로 `ChatCharacter`를 조회한 뒤 연결된 `creatorMember`를 사용한다.
+- `creatorMember`는 도메인 소유권/작성자 판단에만 사용하고 Spring Security principal로 교체하지 않는다.
+- `creatorMember` 누락, role 불일치, memberKind 불일치 요청은 4xx로 거부한다.
+- 요청 중 누락 Member 생성, role/memberKind 자동 보정 같은 lazy repair는 하지 않는다.
+
+#### Edge Cases
+- stale claim을 포함한 인증·인가 실패는 target resolver와 domain use-case 실행 전에 종료되어야 한다.
+- 유효하지 않은 `characterId` 요청은 DB write, S3 upload/delete, 외부 캐릭터 API 호출, 이벤트 발행 없이 실패해야 한다.
+- 다른 AI 캐릭터 또는 HUMAN creator 소유 resource ID는 조회/수정/삭제/연결/답변 모두 거부해야 한다.
+
+### Feature B. AI 캐릭터 관리
+
+#### Requirements
+- 목록 조회, 검색, 상세 조회, 생성, 수정, 삭제 의미의 비활성화(`isActive=false`)를 제공한다.
+- 레거시 플랫폼 관리자와 중복 이름 검증, 외부 캐릭터 API 연동, 대표 이미지 저장, 원작 연결, 언어 감지/번역 이벤트, AI 캐릭터용 `creatorMember` 생성 및 표시 정보 동기화 동작 parity를 유지한다.
+- 삭제는 soft delete이며 row, 연결 Member, 콘텐츠를 물리 삭제하지 않는다.
+
+#### Edge Cases
+- 중복 이름, 외부 캐릭터 API 실패, 이미지 저장 실패는 기존 관리자 동작을 특성화 테스트로 고정한 뒤 유지한다.
+- 비활성화 실패 시 일부 관계만 변경된 상태로 남기지 않는다.
+
+### Feature C. 오디오 콘텐츠 관리 및 signed URL
+
+#### Requirements
+- 캐릭터 소유 콘텐츠 목록/검색/상세 조회, 생성, 수정, 기존 삭제 동작에 따른 soft delete를 제공한다.
+- 기존 크리에이터 콘텐츠 관리의 검증, 파일 처리, content upload/processing pipeline, 가격, 공개/예약, 번역/알림 등 business behavior parity를 유지한다.
+- 관리자 화면 재생용 signed URL을 콘텐츠 목록/상세 응답에 제공한다.
+- signed URL은 공통 `AudioContentCloudFront`를 재사용하고 기존 크리에이터 관리자와 같은 만료 정책을 따른다.
+- 기존 signed URL 구현을 재사용하기 전에 creator admin 만료 계산식과 만료 계산·path 처리에서 실제로 관찰되는 edge case를 통과하는 특성화 테스트로 고정한다.
+- 응답에 private object path나 서명 키 정보를 노출하지 않는다.
+
+#### Edge Cases
+- 콘텐츠 소유자가 target `creatorMember`와 다르면 조회/수정/삭제 모두 거부한다.
+- 커뮤니티 오디오의 기존 30분 signed URL 정책은 이 콘텐츠 재생 정책과 임의 통합하지 않는다.
+
+### Feature D. 시리즈 관리
+
+#### Requirements
+- 목록/상세 조회, 생성, 수정, `isActive=false` soft delete를 제공한다.
+- 콘텐츠 연결/해제, 시리즈 콘텐츠 조회/검색, 순서 관리를 제공한다.
+- 기존 creator series 관리의 생성/수정/soft delete, 콘텐츠 연결/해제, 조회/검색, 순서 관리 behavior를 먼저 통과하는 특성화 테스트로 고정하고 신규 v2 경로에서 parity를 유지한다.
+- 시리즈와 연결 콘텐츠는 모두 동일한 `creatorMember` 소유여야 한다.
+- 기존 `updateSeriesOrders(ids)`처럼 소유권 없는 ID-only 갱신은 신규 v2 경로에서 허용하지 않는다.
+- 시리즈 콘텐츠 조회는 관리자 연결 작업을 위해 검색어 기반 필터를 제공한다.
+
+#### Edge Cases
+- 순서 변경 요청의 모든 series/content ID는 target character 소유 검증을 통과해야 한다.
+- inactive series는 일반 활성 조회에서 제외한다.
+
+### Feature E. 커뮤니티 게시글 관리
+
+#### Requirements
+- 등록, 수정, 공지 고정/해제(`isFixed`), 수정 요청의 `isActive=false` soft delete를 제공한다.
+- soft delete 시 현재 동작처럼 `isFixed=false`, `fixedAt=null`을 적용한다.
+- 기존 최대 고정 게시글 수 3개, 이미지/오디오/유료 게시글 검증, 알림/최근 소식 side effect를 유지한다.
+- 관리자 UI에 필요한 조회는 기존 v2 커뮤니티 조회 로직을 무비판적으로 복제하지 않고 신규 관리자 facade/endpoint에서 안전하게 재사용하거나 최소 query adapter를 둔다.
+
+#### Edge Cases
+- 고정 게시글이 이미 3개인 상태에서 추가 고정은 기존 정책대로 실패한다.
+- soft delete된 고정 게시글은 고정 상태와 시간이 반드시 제거되어야 한다.
+
+### Feature F. FanTalk 답변
+
+#### Requirements
+- 선택한 AI 캐릭터가 자신의 활성 root FanTalk에 creator reply를 작성한다.
+- 요청은 `characterId`와 대상 root `fanTalkId`를 포함한다.
+- 대상 FanTalk가 존재하고 활성 상태이며, 대상 creator가 해석된 `creatorMember`와 일치하는 root 글인지 검증한다.
+- 언어 감지와 기존 응답 DTO 의미 등 검증 가능한 business behavior를 유지하고, 저장된 답변의 writer/creator는 해석된 `creatorMember`와 일관되어야 한다.
+
+#### Edge Cases
+- 다른 캐릭터의 FanTalk, reply에 대한 nested reply, 비활성 FanTalk, 미존재 FanTalk에는 답변하지 않는다.
+- 실패 시 reply 저장과 이벤트 발행이 없어야 한다.
+
+---
+
+## 8. API Expectations
+- 신규 endpoint prefix는 기존 공개 `/api/v2/creator-channels/*`와 legacy `/admin/*`, `/creator-admin/*`를 변경하지 않기 위해 `/api/v2/admin/ai-characters`를 기본안으로 한다.
+- 성공 응답은 `ApiResponse.ok(...)`, API application/controller/security filter 오류는 오류 의미에 맞는 HTTP status와
+  `ApiResponse.error(...)`를 사용한다.
+- 이 API 오류 응답은 `success=false`와 현지화된 `message`를 포함하며 2xx로 normalize하지 않는다.
+- `Accept-Language: ko|en|ja`에 따라 KO/EN/JA 메시지를 반환하고, 없거나 지원하지 않는 언어는 KO로 fallback한다.
+- security filter 단계의 오류도 MVC interceptor에 의존하지 않고 `Accept-Language`를 직접 해석해 동일한 응답 계약을 따른다.
+- 신규 prefix는 캐릭터 관리자 frontend Origin `http://localhost:8888`,
+  `https://test-character-admin.sodalive.net`, `https://character-admin.sodalive.net`만 허용한다.
+- 기존 범용 관리자 frontend와 creator frontend Origin을 캐릭터 관리자 Origin 대신 허용하지 않는다.
+- 공유 인증 경로 `/admin/member/login`, `/member/logout`는 기존 전역 Origin과 위 캐릭터 관리자 Origin의 합집합만 허용한다.
+  이 path-specific 확장은 다른 legacy/public 경로의 CORS 허용 범위를 변경하지 않는다.
+- 위 관리자 Origin의 신규 prefix 오류와 preflight는 404 fallback 및 실제 mapped endpoint의 405/406/415 경로를 포함해 기존
+  전역 CORS 응답 계약을 유지하며, 두 공유 인증 경로에서도 허용·거부 Origin을 검증한다.
+- 허용되지 않은 Origin, method 또는 header를 Spring CORS 계층에서 정책 거부하는 경우는 handler 진입 전 403으로 종료되는
+  브라우저 보안 경계다. 이 403의 body, content type, 현지화 및 `ApiResponse.error` envelope는 신규 API 오류 계약의 예외로
+  두고 외부 계약으로 고정하지 않는다.
+- 표준 HTTP method가 MVC까지 도달했지만 해당 mapping이 없으면 기존 Spring MVC의 405와 `Allow` header를 유지한다.
+- `StrictHttpFirewall`이 신규 prefix에서 비표준 HTTP method 또는 위험 URL을 `RequestRejectedException`으로 거부하면,
+  캐릭터 관리자 허용 Origin에는 CORS header를 포함한 400 `common.error.invalid_request`와 현지화된 `ApiResponse.error`를
+  반환한다. 허용되지 않은 Origin은 기존 Spring CORS 정책과 같이 body 계약 없는 403으로 종료한다.
+- `SecurityConfig`는 기존 `AiCharacterAdminSecurityErrorHandler`를 global `RequestRejectedHandler`로 등록하되 신규 prefix만 위
+  400/CORS 계약으로 처리하고, legacy/public은 `DefaultRequestRejectedHandler`에 위임해 기존 `RequestRejectedException` 동작을
+  유지한다. Spring 5.3의 비표준 method enum 한계 때문에 CORS 검사 request만 `GET` wrapper를 사용하며 실제 firewall method
+  허용 범위는 확장하지 않고 `setUnsafeAllowAnyHttpMethod(true)`도 사용하지 않는다.
+- Phase 1 공통 오류는 인증 정보 없음·잘못됨·만료·폐기 401 `common.error.bad_credentials`, JWT 또는 현재 DB role의
+  ADMIN 불충족 403 `common.error.access_denied`, request/target 미존재·불변식 위반 400, 신규 prefix 미매핑 경로 404, 지원하지
+  않는 HTTP method 405, 응답 media type 406, 요청 media type 415를 `common.error.invalid_request`로 고정한다. 405는 표준
+  `Allow` header를, 415는 표준 `Accept` header를 유지한다. controller mapping의 필수 path variable 선언이 누락된
+  `MissingPathVariableException`과 예상하지 못한 controller/JWT filter 오류는 500 `common.error.unknown`으로 고정한다.
+- malformed JSON의 `HttpMessageNotReadableException`, handler에 전달된 `MethodArgumentNotValidException`, multipart 필수 part
+  누락의 `MissingServletRequestPartException`은 각각 400 `common.error.invalid_request`와 KO/EN/JA `ApiResponse.error`를 반환한다.
+- 이후 phase의 domain/client/server 오류는 각 task에서 정확한 HTTP status와 KO/EN/JA message key를 먼저 정의하고 같은
+  envelope를 적용한다.
+- 신규 prefix 전용 오류 처리는 legacy/public endpoint의 기존 성공·오류 응답에 적용하지 않는다.
+- page 기반 조회는 기존 v2 탭 API 관례를 따라 `page` 기본값 0, `size` 기본값 20, 최소 20, 최대 50 보정을 기본안으로 하며, 경계값 보정은 구현 task와 테스트에 포함한다.
+- multipart 생성/수정은 기존 admin/creator-admin 관례대로 파일 part와 `request` JSON string part를 사용한다.
+- request/response DTO는 신규 v2 AI character admin API 전용 DTO로 두고 legacy/public DTO를 외부 계약으로 재노출하지 않는다.
+
+---
+
+## 9. Technical Constraints
+- Kotlin, Java 17, Spring Boot 2.7.14, Gradle Wrapper를 유지한다.
+- 신규 dependency를 추가하지 않는다.
+- 신규 DB schema/DDL을 만들지 않는다.
+- 기존 v2 API 조립 계층과 domain/application 의존 방향을 따른다.
+- controller 내부 호출, 서버 내부 legacy HTTP 호출, 기존 controller 역참조는 하지 않는다.
+- 신규 v2 application/domain 계층은 기존 controller와 v2 API response DTO를 역참조하지 않는다.
+- 기존 business method를 재사용하기 전 특성화/회귀 테스트를 작성한다.
+- 특성화/회귀 테스트는 신규 v2 use-case의 미구현 RED 테스트와 분리하고, 기존 legacy/creator-admin 구현을 대상으로 먼저 통과해야 한다.
+- 단순 복사-붙여넣기 대신 필요한 최소 추출 또는 v2 use-case 재개발을 선택한다.
+
+---
+
+## 10. Metrics
+- 신규 endpoint별 또는 controller slice별 JWT role × 현재 DB role 인가 매트릭스와 stale ADMIN claim 403 테스트 존재 여부
+- 신규 prefix의 각 API 오류 분기에 정확한 HTTP status, `ApiResponse.error`, KO/EN/JA와 405 `Allow`/415 `Accept` header 테스트
+  존재 여부
+- 신규 prefix 실제 mapped endpoint 및 공유 인증 경로의 허용·거부 Origin/preflight 테스트 존재 여부
+- 신규 prefix의 표준 method 미매핑 405 `Allow` 유지와 `RequestRejectedException` 400/i18n/`ApiResponse.error`/허용 Origin CORS
+  header, 미허용 Origin body 계약 없는 403 테스트 존재 여부
+- legacy/public firewall 동작 불변 및 `setUnsafeAllowAnyHttpMethod(true)` 미사용 확인 여부
+- core controller security/error 계약의 production `@SpringBootTest` full-context 실행과 Redis token fixture cleanup 확인 여부
+- target resolver 조회 직후 `creatorMember` 초기화와 fetch join 제거 시 실패하는 non-vacuous 회귀 테스트 존재 여부
+- `HttpMessageNotReadableException`, `MethodArgumentNotValidException`, `MissingServletRequestPartException`의 exact exception
+  type과 KO/EN/JA 400 envelope 직접 검증 여부
+- target/ownership 실패 시 no-side-effect 테스트 존재 여부
+- character/content/series/community/FanTalk slice별 targeted test 통과 여부
+- signed URL TTL 계산식·edge case parity 및 private path 비노출 테스트 통과 여부
+- 기존 legacy/public endpoint의 성공·오류 status/body/message 회귀 테스트 통과 여부
+
+---
+
+## 11. Acceptance Criteria
+- JWT `ROLE_ADMIN`과 현재 DB `Member.role == ADMIN`을 모두 만족하는 요청만 유효한 AI character 대상으로 신규 endpoint를
+  호출할 수 있다.
+- 비로그인 또는 잘못된 JWT 요청은 401이고, JWT 비ADMIN + DB ADMIN과 JWT ADMIN + DB 비ADMIN stale claim은 모두 403이다.
+- 신규 prefix의 API application/controller/security filter 오류는 정확한 비2xx status, `ApiResponse.error`,
+  `Accept-Language`에 따른 KO/EN/JA message를 반환한다. Spring CORS 계층의 정책 거부 403 body는 이 envelope 계약의 예외다.
+- 지원하지 않는 HTTP method는 405와 `Allow` header, 응답 media type은 406, 요청 media type은 415와 `Accept` header를
+  반환하고, `MissingPathVariableException`은 500 `common.error.unknown`을 반환한다.
+- 표준 HTTP method가 MVC에 도달한 뒤 mapping이 없을 때는 기존 405와 `Allow` header를 유지한다. 신규 prefix의 비표준 HTTP
+  method 또는 위험 URL이 `StrictHttpFirewall`에서 `RequestRejectedException`으로 거부되면 허용된 캐릭터 관리자 Origin에는
+  CORS header와 현지화된 400 `common.error.invalid_request` `ApiResponse.error`를, 미허용 Origin에는 body 계약 없는 403을
+  반환한다. legacy/public firewall 동작은 변하지 않고 `setUnsafeAllowAnyHttpMethod(true)`는 사용하지 않는다.
+- 신규 prefix는 캐릭터 관리자 Origin만 허용하고, `/admin/member/login`, `/member/logout`는 기존 전역 Origin과 캐릭터 관리자
+  Origin의 합집합을 허용한다. 실제 mapped endpoint와 공유 인증 경로의 CORS 허용·거부가 테스트로 고정된다.
+- core controller security/error 계약은 production `@SpringBootTest` full context에서 검증하고 Redis token fixture를 테스트 후
+  정리해 다음 테스트에 남기지 않는다.
+- target resolver의 repository 조회 결과는 반환 직후 `creatorMember`가 초기화되어 있어야 하며, fetch join 제거 시 실패하는
+  회귀 테스트로 고정한다.
+- malformed JSON, handler에 전달된 `MethodArgumentNotValidException`, multipart 필수 part 누락은 각각 정확한 MVC exception
+  type과 현지화된 400 `ApiResponse.error` 계약을 만족한다.
+- character 미존재, creatorMember 미존재, role 불일치, memberKind 불일치 요청은 4xx이며 아무 side effect도 남기지 않는다.
+- 다른 character 소유 resource ID를 사용한 조회/수정/삭제/연결/답변은 4xx로 거부된다.
+- 캐릭터 생성/수정/비활성화는 레거시 관리자 behavior parity를 유지한다.
+- 콘텐츠 생성/수정/soft delete와 signed URL 응답은 기존 creator/admin behavior parity를 유지한다.
+- 시리즈 CRUD, 콘텐츠 연결/해제/순서 변경은 target character 소유 범위를 벗어나지 않는다.
+- 커뮤니티 생성/수정/고정/해제/soft delete는 target creatorMember 소유 게시글에만 적용된다.
+- FanTalk 답변은 target AI character 자신의 활성 root FanTalk에만 저장된다.
+- 기존 legacy/public endpoint 테스트가 통과하고, 두 공유 인증 경로의 CORS 허용 Origin 확장 외 성공·오류
+  status/body/message를 포함한 request/response contract가 변경되지 않는다.
+- 신규 dependency, 신규 DDL, 관련 없는 리팩터링이 없다.
+
+---
+
+## 12. Open Questions
+- 없음.

src/main/kotlin/kr/co/vividnext/sodalive/chat/character/repository/ChatCharacterRepository.kt

@@ -142,6 +142,15 @@ interface ChatCharacterRepository : JpaRepository<ChatCharacter, Long> {
     )
     fun findByIdInWithTagMappings(@Param("ids") ids: List<Long>): List<ChatCharacter>
 
+    @Query(
+        """
+        SELECT c FROM ChatCharacter c
+        LEFT JOIN FETCH c.creatorMember
+        WHERE c.id = :id
+        """
+    )
+    fun findByIdWithCreatorMember(@Param("id") id: Long): ChatCharacter?
+
     fun findByCreatorMemberId(creatorMemberId: Long): ChatCharacter?
     fun existsByCreatorMemberId(creatorMemberId: Long): Boolean
 }

src/main/kotlin/kr/co/vividnext/sodalive/common/ExceptionHandlerFilter.kt

@@ -1,12 +1,22 @@
 package kr.co.vividnext.sodalive.common
 
 import com.fasterxml.jackson.databind.ObjectMapper
+import io.jsonwebtoken.JwtException
+import org.springframework.security.authentication.BadCredentialsException
+import org.springframework.security.web.AuthenticationEntryPoint
+import org.springframework.security.web.util.matcher.RequestMatcher
 import org.springframework.web.filter.OncePerRequestFilter
+import org.springframework.web.servlet.HandlerExceptionResolver
 import javax.servlet.FilterChain
 import javax.servlet.http.HttpServletRequest
 import javax.servlet.http.HttpServletResponse
 
-class ExceptionHandlerFilter(private val objectMapper: ObjectMapper) : OncePerRequestFilter() {
+class ExceptionHandlerFilter(
+    private val objectMapper: ObjectMapper,
+    private val apiRequestMatcher: RequestMatcher,
+    private val apiAuthenticationEntryPoint: AuthenticationEntryPoint,
+    private val apiExceptionResolver: HandlerExceptionResolver
+) : OncePerRequestFilter() {
     override fun doFilterInternal(
         request: HttpServletRequest,
         response: HttpServletResponse,
@@ -15,6 +25,18 @@ class ExceptionHandlerFilter(private val objectMapper: ObjectMapper) : OncePerRe
         try {
             filterChain.doFilter(request, response)
         } catch (e: Exception) {
+            if (apiRequestMatcher.matches(request)) {
+                if (isAuthenticationFailure(e)) {
+                    val authenticationException = e as? BadCredentialsException
+                        ?: BadCredentialsException("Authentication failed", e)
+                    apiAuthenticationEntryPoint.commence(request, response, authenticationException)
+                } else {
+                    val resolved = apiExceptionResolver.resolveException(request, response, null, e)
+                    if (resolved == null) throw e
+                }
+                return
+            }
+
             response.status = 401
             response.contentType = "application/json"
             response.characterEncoding = "UTF-8"
@@ -23,4 +45,10 @@ class ExceptionHandlerFilter(private val objectMapper: ObjectMapper) : OncePerRe
             response.writer.write(json)
         }
     }
+
+    private fun isAuthenticationFailure(exception: Exception): Boolean {
+        return exception is JwtException ||
+            exception is BadCredentialsException ||
+            (exception is SodaException && exception.messageKey == "common.error.bad_credentials")
+    }
 }

src/main/kotlin/kr/co/vividnext/sodalive/configs/SecurityConfig.kt

@@ -2,13 +2,19 @@ package kr.co.vividnext.sodalive.configs
 
 import com.fasterxml.jackson.databind.ObjectMapper
 import kr.co.vividnext.sodalive.common.ExceptionHandlerFilter
+import kr.co.vividnext.sodalive.i18n.SodaMessageSource
 import kr.co.vividnext.sodalive.jwt.JwtAccessDeniedHandler
 import kr.co.vividnext.sodalive.jwt.JwtAuthenticationEntryPoint
 import kr.co.vividnext.sodalive.jwt.JwtFilter
 import kr.co.vividnext.sodalive.jwt.TokenProvider
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.error.AiCharacterAdminErrorResponseWriter
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.error.AiCharacterAdminExceptionHandler
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.security.AiCharacterAdminSecurityErrorHandler
 import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
+import org.springframework.core.Ordered
 import org.springframework.http.HttpMethod
+import org.springframework.http.HttpStatus
 import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity
 import org.springframework.security.config.annotation.web.builders.HttpSecurity
 import org.springframework.security.config.annotation.web.builders.WebSecurity
@@ -17,8 +23,16 @@ import org.springframework.security.config.annotation.web.configuration.WebSecur
 import org.springframework.security.config.http.SessionCreationPolicy
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder
 import org.springframework.security.crypto.password.PasswordEncoder
+import org.springframework.security.web.AuthenticationEntryPoint
 import org.springframework.security.web.SecurityFilterChain
+import org.springframework.security.web.access.AccessDeniedHandler
+import org.springframework.security.web.access.RequestMatcherDelegatingAccessDeniedHandler
+import org.springframework.security.web.authentication.DelegatingAuthenticationEntryPoint
 import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter
+import org.springframework.security.web.util.matcher.AntPathRequestMatcher
+import org.springframework.security.web.util.matcher.RequestMatcher
+import org.springframework.web.HttpRequestHandler
+import org.springframework.web.servlet.handler.SimpleUrlHandlerMapping
 
 @Configuration
 @EnableWebSecurity
@@ -35,25 +49,94 @@ class SecurityConfig(
     }
 
     @Bean
-    fun webSecurityCustomizer(): WebSecurityCustomizer {
+    fun webSecurityCustomizer(
+        aiCharacterAdminSecurityErrorHandler: AiCharacterAdminSecurityErrorHandler
+    ): WebSecurityCustomizer {
         return WebSecurityCustomizer { web: WebSecurity ->
             web
+                .requestRejectedHandler(aiCharacterAdminSecurityErrorHandler)
                 .ignoring()
                 .antMatchers("/h2-console/**", "/favicon.ico", "/error")
         }
     }
 
     @Bean
-    fun filterChain(http: HttpSecurity): SecurityFilterChain {
+    fun aiCharacterAdminErrorResponseWriter(messageSource: SodaMessageSource): AiCharacterAdminErrorResponseWriter {
+        return AiCharacterAdminErrorResponseWriter(objectMapper, messageSource)
+    }
+
+    @Bean
+    fun aiCharacterAdminSecurityErrorHandler(
+        responseWriter: AiCharacterAdminErrorResponseWriter
+    ): AiCharacterAdminSecurityErrorHandler {
+        return AiCharacterAdminSecurityErrorHandler(
+            responseWriter,
+            AntPathRequestMatcher(AI_CHARACTER_ADMIN_PATH),
+            WebConfig.createAiCharacterAdminCorsConfiguration()
+        )
+    }
+
+    @Bean
+    fun aiCharacterAdminExceptionHandler(
+        responseWriter: AiCharacterAdminErrorResponseWriter
+    ): AiCharacterAdminExceptionHandler {
+        return AiCharacterAdminExceptionHandler(
+            responseWriter,
+            AntPathRequestMatcher(AI_CHARACTER_ADMIN_PATH)
+        )
+    }
+
+    @Bean
+    fun aiCharacterAdminFallbackHandlerMapping(
+        responseWriter: AiCharacterAdminErrorResponseWriter
+    ): SimpleUrlHandlerMapping {
+        val notFoundHandler = HttpRequestHandler { request, response ->
+            responseWriter.write(
+                request,
+                response,
+                HttpStatus.NOT_FOUND,
+                "common.error.invalid_request"
+            )
+        }
+        return SimpleUrlHandlerMapping(
+            mapOf(AI_CHARACTER_ADMIN_PATH to notFoundHandler),
+            Ordered.LOWEST_PRECEDENCE - 2
+        ).apply {
+            setCorsConfigurations(
+                mapOf(AI_CHARACTER_ADMIN_PATH to WebConfig.createAiCharacterAdminCorsConfiguration())
+            )
+        }
+    }
+
+    @Bean
+    fun filterChain(
+        http: HttpSecurity,
+        aiCharacterAdminSecurityErrorHandler: AiCharacterAdminSecurityErrorHandler,
+        aiCharacterAdminExceptionHandler: AiCharacterAdminExceptionHandler
+    ): SecurityFilterChain {
         val jwtFilter = JwtFilter(tokenProvider)
+        val aiCharacterAdminRequestMatcher = AntPathRequestMatcher(AI_CHARACTER_ADMIN_PATH)
+        val authenticationEntryPoints = linkedMapOf<RequestMatcher, AuthenticationEntryPoint>(
+            aiCharacterAdminRequestMatcher to aiCharacterAdminSecurityErrorHandler
+        )
+        val delegatingAuthenticationEntryPoint = DelegatingAuthenticationEntryPoint(authenticationEntryPoints).apply {
+            setDefaultEntryPoint(authenticationEntryPoint)
+        }
+        val accessDeniedHandlers = linkedMapOf<RequestMatcher, AccessDeniedHandler>(
+            aiCharacterAdminRequestMatcher to aiCharacterAdminSecurityErrorHandler
+        )
+        val delegatingAccessDeniedHandler = RequestMatcherDelegatingAccessDeniedHandler(
+            accessDeniedHandlers,
+            accessDeniedHandler
+        )
 
         return http
             .cors()
             .and()
             .csrf().disable()
             .exceptionHandling()
-            .authenticationEntryPoint(authenticationEntryPoint)
+            .authenticationEntryPoint(delegatingAuthenticationEntryPoint)
-            .accessDeniedHandler(accessDeniedHandler)
+            .accessDeniedHandler(delegatingAccessDeniedHandler)
             .and()
             .headers()
             .frameOptions()
@@ -63,7 +146,15 @@ class SecurityConfig(
             .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
             .and()
             .addFilterBefore(jwtFilter, UsernamePasswordAuthenticationFilter::class.java)
-            .addFilterBefore(ExceptionHandlerFilter(objectMapper), JwtFilter::class.java)
+            .addFilterBefore(
+                ExceptionHandlerFilter(
+                    objectMapper,
+                    aiCharacterAdminRequestMatcher,
+                    aiCharacterAdminSecurityErrorHandler,
+                    aiCharacterAdminExceptionHandler
+                ),
+                JwtFilter::class.java
+            )
             .authorizeRequests()
             .antMatchers("/member/check/email").permitAll()
             .antMatchers("/member/check/nickname").permitAll()
@@ -108,10 +199,20 @@ class SecurityConfig(
             .antMatchers(HttpMethod.GET, "/api/v2/home/rankings/creators").permitAll()
             .antMatchers(HttpMethod.GET, "/api/v2/home/following").permitAll()
             .antMatchers(HttpMethod.GET, "/api/v2/home/on-air-lives").authenticated()
+            .antMatchers(AI_CHARACTER_ADMIN_PATH)
+            .access(
+                "hasRole('ADMIN') and " +
+                    "principal instanceof T(kr.co.vividnext.sodalive.member.MemberAdapter) and " +
+                    "principal.member.role == T(kr.co.vividnext.sodalive.member.MemberRole).ADMIN"
+            )
             // 페이지네이션 하위 경로(/lives, /debut-creators 등)는 인증 필수
             .antMatchers(HttpMethod.GET, "/api/v2/home/recommendations/**").authenticated()
             .anyRequest().authenticated()
             .and()
             .build()
     }
+
+    companion object {
+        private const val AI_CHARACTER_ADMIN_PATH = "/api/v2/admin/ai-characters/**"
+    }
 }

src/main/kotlin/kr/co/vividnext/sodalive/configs/WebConfig.kt

@@ -3,6 +3,7 @@ package kr.co.vividnext.sodalive.configs
 import kr.co.vividnext.sodalive.common.CountryInterceptor
 import kr.co.vividnext.sodalive.i18n.LangInterceptor
 import org.springframework.context.annotation.Configuration
+import org.springframework.web.cors.CorsConfiguration
 import org.springframework.web.servlet.config.annotation.CorsRegistry
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer
@@ -18,15 +19,49 @@ class WebConfig(
     }
 
     override fun addCorsMappings(registry: CorsRegistry) {
+        listOf("/admin/member/login", "/member/logout").forEach { path ->
+            registry.addMapping(path)
+                .allowedOrigins(*AI_CHARACTER_ADMIN_SHARED_AUTH_ALLOWED_ORIGINS.toTypedArray())
+                .allowedMethods("*")
+                .allowCredentials(true)
+        }
+
+        registry.addMapping("/api/v2/admin/ai-characters/**")
+            .allowedOrigins(*AI_CHARACTER_ADMIN_ALLOWED_ORIGINS.toTypedArray())
+            .allowedMethods("*")
+            .allowCredentials(true)
+
         registry.addMapping("/**")
-            .allowedOrigins(
+            .allowedOrigins(*ALLOWED_ORIGINS.toTypedArray())
+            .allowedMethods("*")
+            .allowCredentials(true)
+    }
+
+    companion object {
+        private val ALLOWED_ORIGINS = listOf(
             "http://localhost:8888",
             "https://creator.sodalive.net",
             "https://test-creator.sodalive.net",
             "https://test-admin.sodalive.net",
             "https://admin.sodalive.net"
         )
-            .allowedMethods("*")
+
-            .allowCredentials(true)
+        private val AI_CHARACTER_ADMIN_ALLOWED_ORIGINS = listOf(
+            "http://localhost:8888",
+            "https://test-character-admin.sodalive.net",
+            "https://character-admin.sodalive.net"
+        )
+
+        private val AI_CHARACTER_ADMIN_SHARED_AUTH_ALLOWED_ORIGINS =
+            (ALLOWED_ORIGINS + AI_CHARACTER_ADMIN_ALLOWED_ORIGINS).distinct()
+
+        internal fun createAiCharacterAdminCorsConfiguration(): CorsConfiguration {
+            return CorsConfiguration().apply {
+                applyPermitDefaultValues()
+                allowedOrigins = AI_CHARACTER_ADMIN_ALLOWED_ORIGINS
+                allowedMethods = listOf(CorsConfiguration.ALL)
+                allowCredentials = true
+            }
+        }
     }
 }

src/main/kotlin/kr/co/vividnext/sodalive/jwt/TokenProvider.kt

@@ -83,15 +83,21 @@ class TokenProvider(
             .parseClaimsJws(token)
             .body
 
-        val authorities = claims[AUTHORITIES_KEY].toString().split(",").map { SimpleGrantedAuthority(it) }
+        val memberId = claims.subject?.toLongOrNull()
-        val memberToken = tokenRepository.findByIdOrNull(id = claims.subject.toLong())
+            ?: throw SodaException(messageKey = "common.error.bad_credentials")
+        val authorityNames = (claims[AUTHORITIES_KEY] as? String)
+            ?.split(",")
+            ?.takeIf { names -> names.all { it.isNotBlank() } }
+            ?: throw SodaException(messageKey = "common.error.bad_credentials")
+        val authorities = authorityNames.map { SimpleGrantedAuthority(it) }
+        val memberToken = tokenRepository.findByIdOrNull(id = memberId)
             ?: throw SodaException(messageKey = "common.error.bad_credentials")
 
         if (!memberToken.tokenSet.contains(token)) {
             throw SodaException(messageKey = "common.error.bad_credentials")
         }
 
-        val member = repository.findByIdOrNull(id = claims.subject.toLong())
+        val member = repository.findByIdOrNull(id = memberId)
             ?: throw SodaException(messageKey = "common.error.bad_credentials")
         val principal = MemberAdapter(member)
 

src/main/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/application/AiCharacterAdminTargetResolver.kt

@@ -0,0 +1,43 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter.application
+
+import kr.co.vividnext.sodalive.chat.character.ChatCharacter
+import kr.co.vividnext.sodalive.chat.character.repository.ChatCharacterRepository
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.member.MemberKind
+import kr.co.vividnext.sodalive.member.MemberRole
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.error.AiCharacterAdminApiException
+import org.springframework.http.HttpStatus
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+
+@Service
+class AiCharacterAdminTargetResolver(
+    private val chatCharacterRepository: ChatCharacterRepository
+) {
+    @Transactional(readOnly = true)
+    fun resolve(characterId: Long): AiCharacterAdminTarget {
+        val chatCharacter = chatCharacterRepository.findByIdWithCreatorMember(characterId)
+            ?: throw invalidTarget()
+        val creatorMember = chatCharacter.creatorMember
+
+        if (creatorMember?.role != MemberRole.CREATOR || creatorMember.memberKind != MemberKind.AI_CHARACTER) {
+            throw invalidTarget()
+        }
+
+        return AiCharacterAdminTarget(
+            characterId = characterId,
+            chatCharacter = chatCharacter,
+            creatorMember = creatorMember
+        )
+    }
+
+    private fun invalidTarget(): AiCharacterAdminApiException {
+        return AiCharacterAdminApiException(HttpStatus.BAD_REQUEST, "common.error.invalid_request")
+    }
+}
+
+data class AiCharacterAdminTarget(
+    val characterId: Long,
+    val chatCharacter: ChatCharacter,
+    val creatorMember: Member
+)

src/main/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/error/AiCharacterAdminApiException.kt

@@ -0,0 +1,8 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter.error
+
+import org.springframework.http.HttpStatus
+
+class AiCharacterAdminApiException(
+    val status: HttpStatus,
+    val messageKey: String
+) : RuntimeException(messageKey)

src/main/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/error/AiCharacterAdminErrorResponseWriter.kt

@@ -0,0 +1,35 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter.error
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import kr.co.vividnext.sodalive.common.ApiResponse
+import kr.co.vividnext.sodalive.i18n.Lang
+import kr.co.vividnext.sodalive.i18n.SodaMessageSource
+import org.springframework.http.HttpHeaders
+import org.springframework.http.HttpStatus
+import org.springframework.http.MediaType
+import javax.servlet.http.HttpServletRequest
+import javax.servlet.http.HttpServletResponse
+
+class AiCharacterAdminErrorResponseWriter(
+    private val objectMapper: ObjectMapper,
+    private val messageSource: SodaMessageSource
+) {
+    fun createResponse(request: HttpServletRequest, messageKey: String): ApiResponse<Any> {
+        val lang = Lang.fromAcceptLanguage(request.getHeader(HttpHeaders.ACCEPT_LANGUAGE))
+        val message = messageSource.getMessage(messageKey, lang)
+            ?: messageSource.getMessage("common.error.unknown", lang)
+        return ApiResponse.error(message = message)
+    }
+
+    fun write(
+        request: HttpServletRequest,
+        response: HttpServletResponse,
+        status: HttpStatus,
+        messageKey: String
+    ) {
+        response.status = status.value()
+        response.contentType = MediaType.APPLICATION_JSON_VALUE
+        response.characterEncoding = Charsets.UTF_8.name()
+        response.writer.write(objectMapper.writeValueAsString(createResponse(request, messageKey)))
+    }
+}

src/main/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/error/AiCharacterAdminExceptionHandler.kt

@@ -0,0 +1,102 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter.error
+
+import org.slf4j.LoggerFactory
+import org.springframework.core.Ordered
+import org.springframework.http.HttpHeaders
+import org.springframework.http.HttpMethod
+import org.springframework.http.HttpStatus
+import org.springframework.http.MediaType
+import org.springframework.http.converter.HttpMessageNotReadableException
+import org.springframework.security.access.AccessDeniedException
+import org.springframework.security.web.util.matcher.RequestMatcher
+import org.springframework.validation.BindException
+import org.springframework.web.HttpMediaTypeNotAcceptableException
+import org.springframework.web.HttpMediaTypeNotSupportedException
+import org.springframework.web.HttpRequestMethodNotSupportedException
+import org.springframework.web.bind.MethodArgumentNotValidException
+import org.springframework.web.bind.MissingPathVariableException
+import org.springframework.web.bind.ServletRequestBindingException
+import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException
+import org.springframework.web.multipart.MultipartException
+import org.springframework.web.multipart.support.MissingServletRequestPartException
+import org.springframework.web.servlet.HandlerExceptionResolver
+import org.springframework.web.servlet.ModelAndView
+import javax.servlet.http.HttpServletRequest
+import javax.servlet.http.HttpServletResponse
+
+class AiCharacterAdminExceptionHandler(
+    private val responseWriter: AiCharacterAdminErrorResponseWriter,
+    private val requestMatcher: RequestMatcher
+) : HandlerExceptionResolver, Ordered {
+    private val logger = LoggerFactory.getLogger(this::class.java)
+
+    override fun getOrder(): Int = Ordered.HIGHEST_PRECEDENCE
+
+    override fun resolveException(
+        request: HttpServletRequest,
+        response: HttpServletResponse,
+        handler: Any?,
+        exception: Exception
+    ): ModelAndView? {
+        if (!requestMatcher.matches(request)) return null
+
+        val error = resolveError(exception)
+        if (error.status.is5xxServerError) {
+            logger.error("Unexpected AI character admin API error", exception)
+        } else {
+            logger.debug("AI character admin API request error", exception)
+        }
+        writeStandardHeaders(request, response, exception)
+        responseWriter.write(request, response, error.status, error.messageKey)
+        return ModelAndView()
+    }
+
+    private fun resolveError(exception: Exception): ResolvedError {
+        return when (exception) {
+            is AiCharacterAdminApiException -> ResolvedError(exception.status, exception.messageKey)
+            is AccessDeniedException -> ResolvedError(HttpStatus.FORBIDDEN, "common.error.access_denied")
+            is HttpRequestMethodNotSupportedException -> invalidRequest(HttpStatus.METHOD_NOT_ALLOWED)
+            is HttpMediaTypeNotSupportedException -> invalidRequest(HttpStatus.UNSUPPORTED_MEDIA_TYPE)
+            is HttpMediaTypeNotAcceptableException -> invalidRequest(HttpStatus.NOT_ACCEPTABLE)
+            is MissingPathVariableException -> ResolvedError(HttpStatus.INTERNAL_SERVER_ERROR, "common.error.unknown")
+            is BindException,
+            is HttpMessageNotReadableException,
+            is MethodArgumentNotValidException,
+            is MethodArgumentTypeMismatchException,
+            is ServletRequestBindingException,
+            is MultipartException,
+            is MissingServletRequestPartException -> invalidRequest(HttpStatus.BAD_REQUEST)
+            else -> ResolvedError(HttpStatus.INTERNAL_SERVER_ERROR, "common.error.unknown")
+        }
+    }
+
+    private fun writeStandardHeaders(
+        request: HttpServletRequest,
+        response: HttpServletResponse,
+        exception: Exception
+    ) {
+        when (exception) {
+            is HttpRequestMethodNotSupportedException -> {
+                exception.supportedMethods?.let { response.setHeader(HttpHeaders.ALLOW, it.joinToString(", ")) }
+            }
+            is HttpMediaTypeNotSupportedException -> {
+                if (exception.supportedMediaTypes.isNotEmpty()) {
+                    val supportedMediaTypes = MediaType.toString(exception.supportedMediaTypes)
+                    response.setHeader(HttpHeaders.ACCEPT, supportedMediaTypes)
+                    if (request.method == HttpMethod.PATCH.name) {
+                        response.setHeader(HttpHeaders.ACCEPT_PATCH, supportedMediaTypes)
+                    }
+                }
+            }
+        }
+    }
+
+    private fun invalidRequest(status: HttpStatus): ResolvedError {
+        return ResolvedError(status, "common.error.invalid_request")
+    }
+
+    private data class ResolvedError(
+        val status: HttpStatus,
+        val messageKey: String
+    )
+}

src/main/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/security/AiCharacterAdminSecurityErrorHandler.kt

@@ -0,0 +1,83 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter.security
+
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.error.AiCharacterAdminErrorResponseWriter
+import org.springframework.http.HttpMethod
+import org.springframework.http.HttpStatus
+import org.springframework.security.access.AccessDeniedException
+import org.springframework.security.core.AuthenticationException
+import org.springframework.security.web.AuthenticationEntryPoint
+import org.springframework.security.web.access.AccessDeniedHandler
+import org.springframework.security.web.firewall.DefaultRequestRejectedHandler
+import org.springframework.security.web.firewall.RequestRejectedException
+import org.springframework.security.web.firewall.RequestRejectedHandler
+import org.springframework.security.web.util.matcher.RequestMatcher
+import org.springframework.web.cors.CorsConfiguration
+import org.springframework.web.cors.DefaultCorsProcessor
+import javax.servlet.http.HttpServletRequest
+import javax.servlet.http.HttpServletRequestWrapper
+import javax.servlet.http.HttpServletResponse
+
+class AiCharacterAdminSecurityErrorHandler(
+    private val responseWriter: AiCharacterAdminErrorResponseWriter,
+    private val aiCharacterAdminRequestMatcher: RequestMatcher,
+    private val aiCharacterAdminCorsConfiguration: CorsConfiguration
+) : AuthenticationEntryPoint, AccessDeniedHandler, RequestRejectedHandler {
+    private val defaultRequestRejectedHandler = DefaultRequestRejectedHandler()
+    private val corsProcessor = DefaultCorsProcessor()
+
+    override fun commence(
+        request: HttpServletRequest,
+        response: HttpServletResponse,
+        authException: AuthenticationException
+    ) {
+        responseWriter.write(
+            request = request,
+            response = response,
+            status = HttpStatus.UNAUTHORIZED,
+            messageKey = "common.error.bad_credentials"
+        )
+    }
+
+    override fun handle(
+        request: HttpServletRequest,
+        response: HttpServletResponse,
+        accessDeniedException: AccessDeniedException
+    ) {
+        responseWriter.write(
+            request = request,
+            response = response,
+            status = HttpStatus.FORBIDDEN,
+            messageKey = "common.error.access_denied"
+        )
+    }
+
+    override fun handle(
+        request: HttpServletRequest,
+        response: HttpServletResponse,
+        requestRejectedException: RequestRejectedException
+    ) {
+        if (!aiCharacterAdminRequestMatcher.matches(request)) {
+            defaultRequestRejectedHandler.handle(request, response, requestRejectedException)
+            return
+        }
+
+        // Spring 5.3 CORS processor only recognizes HttpMethod enums, so use GET for nonstandard method checks.
+        val corsRequest = if (HttpMethod.resolve(request.method) == null) {
+            object : HttpServletRequestWrapper(request) {
+                override fun getMethod(): String = HttpMethod.GET.name
+            }
+        } else {
+            request
+        }
+        if (!corsProcessor.processRequest(aiCharacterAdminCorsConfiguration, corsRequest, response)) {
+            return
+        }
+
+        responseWriter.write(
+            request = request,
+            response = response,
+            status = HttpStatus.BAD_REQUEST,
+            messageKey = "common.error.invalid_request"
+        )
+    }
+}

src/test/kotlin/kr/co/vividnext/sodalive/jwt/TokenProviderTest.kt

@@ -0,0 +1,138 @@
+package kr.co.vividnext.sodalive.jwt
+
+import io.jsonwebtoken.Jwts
+import io.jsonwebtoken.SignatureAlgorithm
+import io.jsonwebtoken.io.Decoders
+import io.jsonwebtoken.security.Keys
+import kr.co.vividnext.sodalive.common.SodaException
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.member.MemberRepository
+import kr.co.vividnext.sodalive.member.MemberRole
+import kr.co.vividnext.sodalive.member.token.MemberToken
+import kr.co.vividnext.sodalive.member.token.MemberTokenRepository
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertThrows
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.ValueSource
+import org.mockito.Mockito
+import java.util.Base64
+import java.util.Date
+import java.util.Optional
+
+class TokenProviderTest {
+    private lateinit var tokenProvider: TokenProvider
+    private lateinit var memberRepository: MemberRepository
+    private lateinit var tokenRepository: MemberTokenRepository
+
+    @BeforeEach
+    fun setUp() {
+        memberRepository = Mockito.mock(MemberRepository::class.java)
+        tokenRepository = Mockito.mock(MemberTokenRepository::class.java)
+        tokenProvider = TokenProvider(
+            secret = SECRET,
+            tokenValidityInSeconds = 3600,
+            repository = memberRepository,
+            tokenRepository = tokenRepository
+        )
+        tokenProvider.afterPropertiesSet()
+    }
+
+    @Test
+    @DisplayName("subject가 없는 서명 JWT는 bad_credentials로 변환된다")
+    fun shouldRejectSignedJwtWithoutSubjectAsBadCredentials() {
+        val token = signedToken(subject = null)
+
+        val exception = assertThrows(SodaException::class.java) {
+            tokenProvider.getAuthentication(token)
+        }
+
+        assertEquals("common.error.bad_credentials", exception.messageKey)
+    }
+
+    @Test
+    @DisplayName("숫자가 아닌 subject의 서명 JWT는 bad_credentials로 변환된다")
+    fun shouldRejectSignedJwtWithNonNumericSubjectAsBadCredentials() {
+        val token = signedToken(subject = "not-a-number")
+
+        val exception = assertThrows(SodaException::class.java) {
+            tokenProvider.getAuthentication(token)
+        }
+
+        assertEquals("common.error.bad_credentials", exception.messageKey)
+    }
+
+    @Test
+    @DisplayName("auth claim이 없는 서명 JWT는 bad_credentials로 변환된다")
+    fun shouldRejectSignedJwtWithoutAuthoritiesClaimAsBadCredentials() {
+        val token = signedToken(subject = MEMBER_ID.toString(), authorities = null)
+        allowStoredToken(token)
+
+        val exception = assertThrows(SodaException::class.java) {
+            tokenProvider.getAuthentication(token)
+        }
+
+        assertEquals("common.error.bad_credentials", exception.messageKey)
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = ["", " ", "ROLE_ADMIN,", ",ROLE_ADMIN", "ROLE_ADMIN,,ROLE_USER"])
+    @DisplayName("비어 있는 authority를 포함한 서명 JWT는 bad_credentials로 변환된다")
+    fun shouldRejectSignedJwtWithBlankAuthorityAsBadCredentials(authorities: String) {
+        val token = signedToken(subject = MEMBER_ID.toString(), authorities = authorities)
+        allowStoredToken(token)
+
+        val exception = assertThrows(SodaException::class.java) {
+            tokenProvider.getAuthentication(token)
+        }
+
+        assertEquals("common.error.bad_credentials", exception.messageKey)
+    }
+
+    @Test
+    @DisplayName("문자열이 아닌 auth claim의 서명 JWT는 bad_credentials로 변환된다")
+    fun shouldRejectSignedJwtWithNonStringAuthoritiesClaimAsBadCredentials() {
+        val token = signedToken(subject = MEMBER_ID.toString(), authorities = 1)
+        allowStoredToken(token)
+
+        val exception = assertThrows(SodaException::class.java) {
+            tokenProvider.getAuthentication(token)
+        }
+
+        assertEquals("common.error.bad_credentials", exception.messageKey)
+    }
+
+    private fun allowStoredToken(token: String) {
+        val member = Member(
+            email = "admin@example.com",
+            password = "password",
+            nickname = "admin",
+            role = MemberRole.ADMIN
+        ).apply { id = MEMBER_ID }
+        Mockito.`when`(tokenRepository.findById(MEMBER_ID))
+            .thenReturn(Optional.of(MemberToken(MEMBER_ID, mutableSetOf(token))))
+        Mockito.`when`(memberRepository.findById(MEMBER_ID)).thenReturn(Optional.of(member))
+    }
+
+    private fun signedToken(subject: String?, authorities: Any? = "ROLE_ADMIN"): String {
+        val builder = Jwts.builder()
+            .signWith(Keys.hmacShaKeyFor(Decoders.BASE64.decode(SECRET)), SignatureAlgorithm.HS512)
+            .setExpiration(Date(System.currentTimeMillis() + 60_000))
+
+        if (subject != null) {
+            builder.setSubject(subject)
+        }
+        if (authorities != null) {
+            builder.claim("auth", authorities)
+        }
+
+        return builder.compact()
+    }
+
+    companion object {
+        private const val MEMBER_ID = 1L
+        private val SECRET = Base64.getEncoder().encodeToString("a".repeat(64).toByteArray())
+    }
+}

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/AiCharacterAdminAccessDeniedErrorContractTest.kt

@@ -0,0 +1,79 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter
+
+import kr.co.vividnext.sodalive.common.ApiResponse
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.member.MemberAdapter
+import kr.co.vividnext.sodalive.member.MemberRole
+import kr.co.vividnext.sodalive.support.EmbeddedRedisInitializer
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.CsvSource
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.boot.test.context.TestComponent
+import org.springframework.context.annotation.Import
+import org.springframework.security.access.AccessDeniedException
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken
+import org.springframework.security.core.authority.SimpleGrantedAuthority
+import org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.authentication
+import org.springframework.test.context.ContextConfiguration
+import org.springframework.test.web.servlet.MockMvc
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.status
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.RestController
+
+@SpringBootTest
+@AutoConfigureMockMvc
+@ContextConfiguration(initializers = [EmbeddedRedisInitializer::class])
+@Import(
+    AiCharacterAdminAccessDeniedErrorContractTest.AiCharacterAdminAccessDeniedSampleController::class
+)
+class AiCharacterAdminAccessDeniedErrorContractTest @Autowired constructor(
+    private val mockMvc: MockMvc
+) {
+    @ParameterizedTest
+    @CsvSource(
+        "ko,권한이 없습니다.",
+        "en,You do not have permission.",
+        "ja,権限がありません。"
+    )
+    @DisplayName("신규 prefix controller AccessDeniedException은 403 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForControllerAccessDenied(language: String, message: String) {
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/access-denied-contract")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication()))
+        )
+            .andExpect(status().isForbidden)
+            .andExpect(jsonPath("$.success").value(false))
+            .andExpect(jsonPath("$.message").value(message))
+            .andExpect(jsonPath("$.data").doesNotExist())
+            .andExpect(jsonPath("$.errorProperty").doesNotExist())
+    }
+
+    private fun createAuthentication() =
+        UsernamePasswordAuthenticationToken(
+            MemberAdapter(
+                Member(
+                    email = "admin@example.com",
+                    password = "password",
+                    nickname = "admin",
+                    role = MemberRole.ADMIN
+                )
+            ),
+            "token",
+            listOf(SimpleGrantedAuthority("ROLE_ADMIN"))
+        )
+
+    @TestComponent
+    @RestController
+    class AiCharacterAdminAccessDeniedSampleController {
+        @GetMapping("/api/v2/admin/ai-characters/access-denied-contract")
+        fun accessDenied(): ApiResponse<String> {
+            throw AccessDeniedException("admin only")
+        }
+    }
+}

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/AiCharacterAdminAuthorizationTest.kt

@@ -0,0 +1,130 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter
+
+import kr.co.vividnext.sodalive.common.ApiResponse
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.member.MemberAdapter
+import kr.co.vividnext.sodalive.member.MemberRole
+import kr.co.vividnext.sodalive.support.EmbeddedRedisInitializer
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Test
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.boot.test.context.TestComponent
+import org.springframework.context.annotation.Import
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken
+import org.springframework.security.core.authority.SimpleGrantedAuthority
+import org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.anonymous
+import org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.authentication
+import org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.user
+import org.springframework.test.context.ContextConfiguration
+import org.springframework.test.web.servlet.MockMvc
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.status
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@SpringBootTest
+@AutoConfigureMockMvc
+@ContextConfiguration(initializers = [EmbeddedRedisInitializer::class])
+@Import(
+    AiCharacterAdminAuthorizationTest.AiCharacterAdminAuthorizationSampleController::class,
+    AiCharacterAdminAuthorizationTest.AiCharacterAdminLegacySampleController::class
+)
+class AiCharacterAdminAuthorizationTest @Autowired constructor(
+    private val mockMvc: MockMvc
+) {
+    @Test
+    @DisplayName("AI 캐릭터 관리자 API는 비회원 요청을 거부한다")
+    fun shouldRejectAnonymousUser() {
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/sample")
+                .with(anonymous())
+        )
+            .andExpect(status().isUnauthorized)
+    }
+
+    @Test
+    @DisplayName("AI 캐릭터 관리자 API는 JWT role이 ADMIN이 아니면 현재 DB role이 ADMIN이어도 거부한다")
+    fun shouldRejectNonAdminJwtRole() {
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/sample")
+                .with(authentication(createAuthentication(MemberRole.USER, MemberRole.ADMIN)))
+        )
+            .andExpect(status().isForbidden)
+    }
+
+    @Test
+    @DisplayName("AI 캐릭터 관리자 API는 JWT가 ADMIN이어도 현재 DB role이 강등되면 거부한다")
+    fun shouldRejectStaleAdminClaimAfterCurrentRoleDowngrade() {
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/sample")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.USER)))
+        )
+            .andExpect(status().isForbidden)
+    }
+
+    @Test
+    @DisplayName("AI 캐릭터 관리자 API는 ADMIN authority가 있어도 MemberAdapter principal이 아니면 거부한다")
+    fun shouldRejectAdminAuthorityWithoutMemberAdapterPrincipal() {
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/sample")
+                .with(user("admin").roles("ADMIN"))
+        )
+            .andExpect(status().isForbidden)
+    }
+
+    @Test
+    @DisplayName("AI 캐릭터 관리자 API는 JWT와 현재 DB role이 모두 ADMIN이면 허용한다")
+    fun shouldAllowCurrentAdminWithAdminJwtRole() {
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/sample")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+            .andExpect(status().isOk)
+            .andExpect(jsonPath("$.success").value(true))
+            .andExpect(jsonPath("$.data").value("ok"))
+    }
+
+    @Test
+    @DisplayName("현재 DB role 추가 검증은 신규 AI 캐릭터 관리자 prefix 밖에 적용하지 않는다")
+    fun shouldKeepLegacyAuthenticatedRuleOutsideAiCharacterAdminPrefix() {
+        mockMvc.perform(
+            get("/phase1-legacy-sample")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.USER)))
+        )
+            .andExpect(status().isOk)
+            .andExpect(jsonPath("$.success").value(true))
+    }
+
+    private fun createAuthentication(jwtRole: MemberRole, currentRole: MemberRole) =
+        UsernamePasswordAuthenticationToken(
+            MemberAdapter(
+                Member(
+                    email = "admin@example.com",
+                    password = "password",
+                    nickname = "admin",
+                    role = currentRole
+                )
+            ),
+            "token",
+            listOf(SimpleGrantedAuthority("ROLE_${jwtRole.name}"))
+        )
+
+    @TestComponent
+    @RestController
+    @RequestMapping("/api/v2/admin/ai-characters/sample")
+    class AiCharacterAdminAuthorizationSampleController {
+        @GetMapping
+        fun sample(): ApiResponse<String> = ApiResponse.ok("ok")
+    }
+
+    @TestComponent
+    @RestController
+    class AiCharacterAdminLegacySampleController {
+        @GetMapping("/phase1-legacy-sample")
+        fun sample(): ApiResponse<String> = ApiResponse.ok("legacy-ok")
+    }
+}

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/AiCharacterAdminErrorContractTest.kt

@@ -0,0 +1,907 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter
+
+import io.jsonwebtoken.Claims
+import io.jsonwebtoken.ExpiredJwtException
+import io.jsonwebtoken.Header
+import kr.co.vividnext.sodalive.chat.character.repository.ChatCharacterRepository
+import kr.co.vividnext.sodalive.common.ApiResponse
+import kr.co.vividnext.sodalive.common.SodaException
+import kr.co.vividnext.sodalive.jwt.TokenProvider
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.member.MemberAdapter
+import kr.co.vividnext.sodalive.member.MemberRole
+import kr.co.vividnext.sodalive.support.EmbeddedRedisInitializer
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.application.AiCharacterAdminTargetResolver
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.error.AiCharacterAdminApiException
+import org.hamcrest.Matchers.nullValue
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.CsvSource
+import org.junit.jupiter.params.provider.ValueSource
+import org.mockito.Mockito
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.boot.test.context.TestComponent
+import org.springframework.boot.test.mock.mockito.MockBean
+import org.springframework.context.annotation.Import
+import org.springframework.core.MethodParameter
+import org.springframework.http.HttpHeaders
+import org.springframework.http.HttpStatus
+import org.springframework.http.MediaType
+import org.springframework.http.converter.HttpMessageNotReadableException
+import org.springframework.security.authentication.InternalAuthenticationServiceException
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken
+import org.springframework.security.core.authority.SimpleGrantedAuthority
+import org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.anonymous
+import org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.authentication
+import org.springframework.test.context.ContextConfiguration
+import org.springframework.test.web.servlet.MockMvc
+import org.springframework.test.web.servlet.ResultActions
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.delete
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.multipart
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.options
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.patch
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.content
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.header
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.status
+import org.springframework.validation.BeanPropertyBindingResult
+import org.springframework.web.bind.MethodArgumentNotValidException
+import org.springframework.web.bind.annotation.DeleteMapping
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PatchMapping
+import org.springframework.web.bind.annotation.PathVariable
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.PutMapping
+import org.springframework.web.bind.annotation.RequestBody
+import org.springframework.web.bind.annotation.RequestHeader
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RequestParam
+import org.springframework.web.bind.annotation.RequestPart
+import org.springframework.web.bind.annotation.RestController
+import org.springframework.web.multipart.MaxUploadSizeExceededException
+import org.springframework.web.multipart.MultipartException
+import org.springframework.web.multipart.support.MissingServletRequestPartException
+
+@SpringBootTest
+@AutoConfigureMockMvc
+@ContextConfiguration(initializers = [EmbeddedRedisInitializer::class])
+@Import(
+    AiCharacterAdminErrorContractTest.AiCharacterAdminErrorContractSampleController::class,
+    AiCharacterAdminErrorContractTest.AiCharacterAdminLegacyErrorContractSampleController::class
+)
+class AiCharacterAdminErrorContractTest @Autowired constructor(
+    private val mockMvc: MockMvc
+) {
+    companion object {
+        private const val CHARACTER_ADMIN_ORIGIN = "https://character-admin.sodalive.net"
+        private const val CREATOR_ORIGIN = "https://creator.sodalive.net"
+    }
+
+    @MockBean
+    private lateinit var tokenProvider: TokenProvider
+
+    @MockBean
+    private lateinit var chatCharacterRepository: ChatCharacterRepository
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,로그인 정보를 확인해주세요.",
+        "en,Please check your login information.",
+        "ja,ログイン情報を確認してください。"
+    )
+    @DisplayName("비회원 401 오류는 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForAnonymousRequest(language: String, message: String) {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .header("Accept-Language", language)
+                .with(anonymous())
+        )
+
+        result.andExpectApiError(401, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,권한이 없습니다.",
+        "en,You do not have permission.",
+        "ja,権限がありません。"
+    )
+    @DisplayName("비ADMIN 403 오류는 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForNonAdminRequest(language: String, message: String) {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.USER, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(403, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,권한이 없습니다.",
+        "en,You do not have permission.",
+        "ja,権限がありません。"
+    )
+    @DisplayName("stale ADMIN claim 403 오류는 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForStaleAdminClaim(language: String, message: String) {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.USER)))
+        )
+
+        result.andExpectApiError(403, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,로그인 정보를 확인해주세요.",
+        "en,Please check your login information.",
+        "ja,ログイン情報を確認してください。"
+    )
+    @DisplayName("잘못된 JWT의 401 오류도 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForInvalidJwt(language: String, message: String) {
+        Mockito.`when`(tokenProvider.validateToken("invalid-token")).thenReturn(false)
+
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .header("Authorization", "Bearer invalid-token")
+                .header("Accept-Language", language)
+        )
+
+        result.andExpectApiError(401, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,로그인 정보를 확인해주세요.",
+        "en,Please check your login information.",
+        "ja,ログイン情報を確認してください。"
+    )
+    @DisplayName("폐기된 JWT filter 예외도 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForRevokedJwt(language: String, message: String) {
+        Mockito.`when`(tokenProvider.validateToken("revoked-token")).thenReturn(true)
+        Mockito.`when`(tokenProvider.getAuthentication("revoked-token"))
+            .thenThrow(SodaException(messageKey = "common.error.bad_credentials"))
+
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .header("Authorization", "Bearer revoked-token")
+                .header("Accept-Language", language)
+        )
+
+        result.andExpectApiError(401, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,로그인 정보를 확인해주세요.",
+        "en,Please check your login information.",
+        "ja,ログイン情報を確認してください。"
+    )
+    @DisplayName("JWT 검증 직후 만료된 token도 401 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseWhenJwtExpiresBetweenParses(language: String, message: String) {
+        Mockito.`when`(tokenProvider.validateToken("expired-between-parses")).thenReturn(true)
+        Mockito.`when`(tokenProvider.getAuthentication("expired-between-parses"))
+            .thenThrow(
+                ExpiredJwtException(
+                    Mockito.mock(Header::class.java),
+                    Mockito.mock(Claims::class.java),
+                    "expired"
+                )
+            )
+
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .header("Authorization", "Bearer expired-between-parses")
+                .header("Accept-Language", language)
+        )
+
+        result.andExpectApiError(401, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,알 수 없는 오류가 발생했습니다. 다시 시도해 주세요.",
+        "en,An unknown error occurred. try again.",
+        "ja,不明なエラーが発生しました。恐れ入りますが、もう一度お試しください。"
+    )
+    @DisplayName("인증 저장소 장애는 500 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForAuthenticationInfrastructureError(language: String, message: String) {
+        Mockito.`when`(tokenProvider.validateToken("authentication-service-error")).thenReturn(true)
+        Mockito.`when`(tokenProvider.getAuthentication("authentication-service-error"))
+            .thenThrow(InternalAuthenticationServiceException("authentication backend unavailable"))
+
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .header("Authorization", "Bearer authentication-service-error")
+                .header("Accept-Language", language)
+        )
+
+        result.andExpectApiError(500, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,알 수 없는 오류가 발생했습니다. 다시 시도해 주세요.",
+        "en,An unknown error occurred. try again.",
+        "ja,不明なエラーが発生しました。恐れ入りますが、もう一度お試しください。"
+    )
+    @DisplayName("JWT filter의 예상하지 못한 오류는 500 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForUnexpectedJwtFilterError(language: String, message: String) {
+        Mockito.`when`(tokenProvider.validateToken("filter-error-token")).thenReturn(true)
+        Mockito.`when`(tokenProvider.getAuthentication("filter-error-token"))
+            .thenThrow(IllegalStateException("internal detail must not be exposed"))
+
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .header("Authorization", "Bearer filter-error-token")
+                .header("Accept-Language", language)
+        )
+
+        result.andExpectApiError(500, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("잘못된 target 400 오류는 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForInvalidTarget(language: String, message: String) {
+        Mockito.`when`(chatCharacterRepository.findByIdWithCreatorMember(404L)).thenReturn(null)
+
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/invalid-target")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("잘못된 request binding은 400 ApiResponse와 i18n 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForInvalidRequestBinding(language: String, message: String) {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/binding")
+                .param("value", "not-a-number")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("읽을 수 없는 JSON body는 400 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForUnreadableJson(language: String, message: String) {
+        val result = mockMvc.perform(
+            post("/api/v2/admin/ai-characters/error-contract/body-binding")
+                .contentType(MediaType.APPLICATION_JSON)
+                .content("{")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, message)
+        assertEquals(HttpMessageNotReadableException::class.java, result.andReturn().resolvedException?.javaClass)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("MethodArgumentNotValidException은 400 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForMethodArgumentNotValid(language: String, message: String) {
+        val result = mockMvc.perform(
+            post("/api/v2/admin/ai-characters/error-contract/method-argument-not-valid")
+                .contentType(MediaType.APPLICATION_JSON)
+                .content("{\"value\":1}")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, message)
+        assertEquals(MethodArgumentNotValidException::class.java, result.andReturn().resolvedException?.javaClass)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("필수 multipart part 누락은 400 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForMissingMultipartPart(language: String, message: String) {
+        val result = mockMvc.perform(
+            multipart("/api/v2/admin/ai-characters/error-contract/required-part")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, message)
+        assertEquals(MissingServletRequestPartException::class.java, result.andReturn().resolvedException?.javaClass)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("필수 request header 누락은 400 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForMissingRequiredHeader(language: String, message: String) {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/required-header")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,알 수 없는 오류가 발생했습니다. 다시 시도해 주세요.",
+        "en,An unknown error occurred. try again.",
+        "ja,不明なエラーが発生しました。恐れ入りますが、もう一度お試しください。"
+    )
+    @DisplayName("예상하지 못한 오류는 500 ApiResponse와 i18n 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForUnexpectedError(language: String, message: String) {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/unexpected")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(500, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,알 수 없는 오류가 발생했습니다. 다시 시도해 주세요.",
+        "en,An unknown error occurred. try again.",
+        "ja,不明なエラーが発生しました。恐れ入りますが、もう一度お試しください。"
+    )
+    @DisplayName("등록되지 않은 message key는 status를 유지하고 unknown 메시지로 fallback한다")
+    fun shouldFallbackToLocalizedUnknownMessageForMissingMessageKey(language: String, message: String) {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/missing-message-key")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("지원하지 않는 HTTP method는 405 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForUnsupportedMethod(language: String, message: String) {
+        val result = mockMvc.perform(
+            post("/api/v2/admin/ai-characters/error-contract/success")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(405, message)
+        result.andExpect(header().string(HttpHeaders.ALLOW, "GET"))
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("지원하지 않는 media type은 415 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForUnsupportedMediaType(language: String, message: String) {
+        val result = mockMvc.perform(
+            post("/api/v2/admin/ai-characters/error-contract/media-type")
+                .contentType(MediaType.TEXT_PLAIN)
+                .content("text")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(415, message)
+        result.andExpect(header().string(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON_VALUE))
+    }
+
+    @Test
+    @DisplayName("PATCH의 지원하지 않는 media type은 Accept와 Accept-Patch header를 반환한다")
+    fun shouldReturnAcceptHeadersForUnsupportedPatchMediaType() {
+        val result = mockMvc.perform(
+            patch("/api/v2/admin/ai-characters/error-contract/media-type")
+                .contentType(MediaType.TEXT_PLAIN)
+                .content("text")
+                .header("Accept-Language", "en")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(415, "Invalid request.")
+        result.andExpect(header().string(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON_VALUE))
+        result.andExpect(header().string(HttpHeaders.ACCEPT_PATCH, MediaType.APPLICATION_JSON_VALUE))
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("지원하지 않는 응답 media type은 406 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForNotAcceptableMediaType(language: String, message: String) {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .accept(MediaType.APPLICATION_XML)
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(406, message)
+    }
+
+    @Test
+    @DisplayName("허용된 캐릭터 관리자 Origin의 지원하지 않는 응답 media type 406에는 CORS header와 ApiResponse가 함께 반환된다")
+    fun shouldApplyCorsToNotAcceptableMediaTypeError() {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .accept(MediaType.APPLICATION_XML)
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                .header("Accept-Language", "en")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(406, "Invalid request.")
+        result.andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,알 수 없는 오류가 발생했습니다. 다시 시도해 주세요.",
+        "en,An unknown error occurred. try again.",
+        "ja,不明なエラーが発生しました。恐れ入りますが、もう一度お試しください。"
+    )
+    @DisplayName("누락된 path variable은 500 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForMissingPathVariable(language: String, message: String) {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/missing-path-variable")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(500, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("multipart 파싱 오류는 400 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForMultipartError(language: String, message: String) {
+        val result = mockMvc.perform(
+            post("/api/v2/admin/ai-characters/error-contract/multipart-error")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("multipart 용량 초과 오류는 400 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForMaxUploadSizeError(language: String, message: String) {
+        val result = mockMvc.perform(
+            post("/api/v2/admin/ai-characters/error-contract/max-upload-size-error")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, message)
+    }
+
+    @ParameterizedTest
+    @CsvSource(
+        "ko,잘못된 요청입니다.",
+        "en,Invalid request.",
+        "ja,無効なリクエストです。"
+    )
+    @DisplayName("신규 prefix의 미매핑 경로는 404 ApiResponse와 요청 언어 메시지를 반환한다")
+    fun shouldReturnLocalizedApiResponseForUnmappedPath(language: String, message: String) {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/unmapped-path")
+                .header("Accept-Language", language)
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(404, message)
+    }
+
+    @Test
+    @DisplayName("허용된 캐릭터 관리자 Origin의 미매핑 경로 404에는 CORS header와 ApiResponse가 함께 반환된다")
+    fun shouldApplyCorsToUnmappedPathError() {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/unmapped-path")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                .header("Accept-Language", "en")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(404, "Invalid request.")
+        result.andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+    }
+
+    @Test
+    @DisplayName("허용된 캐릭터 관리자 Origin의 지원하지 않는 method 405에는 CORS header와 ApiResponse가 함께 반환된다")
+    fun shouldApplyCorsToUnsupportedMethodError() {
+        val result = mockMvc.perform(
+            post("/api/v2/admin/ai-characters/error-contract/success")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                .header("Accept-Language", "en")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(405, "Invalid request.")
+        result.andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+    }
+
+    @Test
+    @DisplayName("허용된 캐릭터 관리자 Origin의 지원하지 않는 media type 415에는 CORS header와 ApiResponse가 함께 반환된다")
+    fun shouldApplyCorsToUnsupportedMediaTypeError() {
+        val result = mockMvc.perform(
+            post("/api/v2/admin/ai-characters/error-contract/media-type")
+                .contentType(MediaType.TEXT_PLAIN)
+                .content("text")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                .header("Accept-Language", "en")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(415, "Invalid request.")
+        result.andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+    }
+
+    @Test
+    @DisplayName("허용된 캐릭터 관리자 Origin의 multipart 오류 400에는 CORS header와 ApiResponse가 함께 반환된다")
+    fun shouldApplyCorsToMultipartError() {
+        val result = mockMvc.perform(
+            post("/api/v2/admin/ai-characters/error-contract/multipart-error")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                .header("Accept-Language", "en")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, "Invalid request.")
+        result.andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+    }
+
+    @ParameterizedTest
+    @ValueSource(
+        strings = [
+            "http://localhost:8888",
+            "https://test-character-admin.sodalive.net",
+            "https://character-admin.sodalive.net"
+        ]
+    )
+    @DisplayName("캐릭터 관리자 Origin의 신규 prefix preflight를 CORS filter가 허용한다")
+    fun shouldAllowCorsPreflightForAiCharacterAdminPrefix(origin: String) {
+        mockMvc.perform(
+            options("/api/v2/admin/ai-characters/unmapped-path")
+                .header(HttpHeaders.ORIGIN, origin)
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, "GET")
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_HEADERS, "authorization,content-type")
+        )
+            .andExpect(status().isOk)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, origin))
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS, "true"))
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_HEADERS, "authorization, content-type"))
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = ["POST", "PUT", "PATCH", "DELETE"])
+    @DisplayName("캐릭터 관리자 Origin의 실제 mapped endpoint write preflight를 CORS filter가 허용한다")
+    fun shouldAllowCorsPreflightForMappedAiCharacterAdminWriteMethods(method: String) {
+        mockMvc.perform(
+            options("/api/v2/admin/ai-characters/error-contract/write-preflight")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, method)
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_HEADERS, "authorization,content-type")
+        )
+            .andExpect(status().isOk)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_METHODS, method))
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS, "true"))
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_HEADERS, "authorization, content-type"))
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = ["POST", "PUT", "PATCH", "DELETE"])
+    @DisplayName("캐릭터 관리자 Origin의 fallback write preflight를 CORS filter가 허용한다")
+    fun shouldAllowCorsPreflightForFallbackAiCharacterAdminWriteMethods(method: String) {
+        mockMvc.perform(
+            options("/api/v2/admin/ai-characters/unmapped-path")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, method)
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_HEADERS, "authorization,content-type")
+        )
+            .andExpect(status().isOk)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_METHODS, method))
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS, "true"))
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_HEADERS, "authorization, content-type"))
+    }
+
+    @ParameterizedTest
+    @ValueSource(
+        strings = [
+            "https://creator.sodalive.net",
+            "https://test-creator.sodalive.net",
+            "https://admin.sodalive.net",
+            "https://test-admin.sodalive.net"
+        ]
+    )
+    @DisplayName("신규 prefix preflight는 범용 관리자와 creator Origin을 허용하지 않는다")
+    fun shouldRejectOtherAdminOriginPreflightForAiCharacterAdminPrefix(origin: String) {
+        mockMvc.perform(
+            options("/api/v2/admin/ai-characters/unmapped-path")
+                .header(HttpHeaders.ORIGIN, origin)
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, "GET")
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_HEADERS, "authorization,content-type")
+        )
+            .andExpect(status().isForbidden)
+            .andExpect(header().doesNotExist(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN))
+    }
+
+    @Test
+    @DisplayName("신규 prefix 일반 요청도 creator Origin이면 CORS 단계에서 거부된다")
+    fun shouldNotApplyCreatorOriginCorsToAiCharacterAdminError() {
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/unmapped-path")
+                .header(HttpHeaders.ORIGIN, CREATOR_ORIGIN)
+                .header("Accept-Language", "en")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+            .andExpect(status().isForbidden)
+            .andExpect(header().doesNotExist(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN))
+    }
+
+    @Test
+    @DisplayName("비ADMIN 요청은 request body 역직렬화 전에 403으로 거부된다")
+    fun shouldRejectNonAdminBeforeRequestBodyBinding() {
+        val result = mockMvc.perform(
+            post("/api/v2/admin/ai-characters/error-contract/body-binding")
+                .contentType(MediaType.APPLICATION_JSON)
+                .content("{\"value\":\"not-a-number\"}")
+                .header("Accept-Language", "en")
+                .with(authentication(createAuthentication(MemberRole.USER, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(403, "You do not have permission.")
+    }
+
+    @Test
+    @DisplayName("인접 prefix에는 AI 캐릭터 관리자 전용 fallback handler가 적용되지 않는다")
+    fun shouldNotApplyAiCharacterAdminHandlerToAdjacentPrefix() {
+        mockMvc.perform(
+            delete("/api/v2/admin/ai-characters-shadow")
+                .header("Accept-Language", "en")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+            .andExpect(status().isNotFound)
+            .andExpect(content().string(""))
+    }
+
+    @Test
+    @DisplayName("Accept-Language가 없으면 신규 security 오류 메시지는 한국어로 fallback한다")
+    fun shouldFallbackToKoreanForMissingAcceptLanguage() {
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/success")
+                .with(anonymous())
+        )
+
+        result.andExpectApiError(401, "로그인 정보를 확인해주세요.")
+    }
+
+    @Test
+    @DisplayName("지원하지 않는 Accept-Language는 신규 MVC 오류 메시지를 한국어로 fallback한다")
+    fun shouldFallbackToKoreanForUnsupportedAcceptLanguage() {
+        Mockito.`when`(chatCharacterRepository.findByIdWithCreatorMember(404L)).thenReturn(null)
+
+        val result = mockMvc.perform(
+            get("/api/v2/admin/ai-characters/error-contract/invalid-target")
+                .header("Accept-Language", "fr")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+
+        result.andExpectApiError(400, "잘못된 요청입니다.")
+    }
+
+    @Test
+    @DisplayName("신규 prefix 밖 비회원 오류는 기존 빈 401 응답을 유지한다")
+    fun shouldKeepLegacyAnonymousErrorResponse() {
+        mockMvc.perform(
+            get("/phase1-legacy-error-contract")
+                .header("Accept-Language", "en")
+                .with(anonymous())
+        )
+            .andExpect(status().isUnauthorized)
+            .andExpect(content().string(""))
+    }
+
+    @Test
+    @DisplayName("신규 prefix 밖 JWT filter 예외는 기존 한국어 ApiResponse를 유지한다")
+    fun shouldKeepLegacyRevokedJwtErrorResponse() {
+        Mockito.`when`(tokenProvider.validateToken("legacy-revoked-token")).thenReturn(true)
+        Mockito.`when`(tokenProvider.getAuthentication("legacy-revoked-token"))
+            .thenThrow(SodaException(messageKey = "common.error.bad_credentials"))
+
+        mockMvc.perform(
+            get("/phase1-legacy-error-contract")
+                .header("Authorization", "Bearer legacy-revoked-token")
+                .header("Accept-Language", "en")
+        )
+            .andExpect(status().isUnauthorized)
+            .andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON))
+            .andExpect(jsonPath("$.success").value(false))
+            .andExpect(jsonPath("$.message").value("로그인 정보를 확인해주세요."))
+    }
+
+    @Test
+    @DisplayName("신규 prefix 밖 지원하지 않는 HTTP method 오류는 기존 200 응답을 유지한다")
+    fun shouldKeepLegacyUnsupportedMethodErrorResponse() {
+        mockMvc.perform(
+            post("/phase1-legacy-error-contract")
+                .header("Accept-Language", "en")
+                .with(authentication(createAuthentication(MemberRole.ADMIN, MemberRole.ADMIN)))
+        )
+            .andExpect(status().isOk)
+            .andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON))
+            .andExpect(jsonPath("$.success").value(false))
+            .andExpect(jsonPath("$.message").value("알 수 없는 오류가 발생했습니다. 다시 시도해 주세요."))
+    }
+
+    private fun ResultActions.andExpectApiError(httpStatus: Int, message: String) {
+        andExpect(status().`is`(httpStatus))
+            .andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON))
+            .andExpect(jsonPath("$.success").value(false))
+            .andExpect(jsonPath("$.message").value(message))
+            .andExpect(jsonPath("$.data").value(nullValue()))
+            .andExpect(jsonPath("$.errorProperty").value(nullValue()))
+    }
+
+    private fun createAuthentication(jwtRole: MemberRole, currentRole: MemberRole) =
+        UsernamePasswordAuthenticationToken(
+            MemberAdapter(
+                Member(
+                    email = "admin@example.com",
+                    password = "password",
+                    nickname = "admin",
+                    role = currentRole
+                )
+            ),
+            "token",
+            listOf(SimpleGrantedAuthority("ROLE_${jwtRole.name}"))
+        )
+
+    @TestComponent
+    @RestController
+    @RequestMapping("/api/v2/admin/ai-characters/error-contract")
+    class AiCharacterAdminErrorContractSampleController(
+        private val targetResolver: AiCharacterAdminTargetResolver
+    ) {
+        @GetMapping("/success")
+        fun success(): ApiResponse<String> = ApiResponse.ok("ok")
+
+        @GetMapping("/invalid-target")
+        fun invalidTarget(): ApiResponse<String> {
+            targetResolver.resolve(404L)
+            return ApiResponse.ok("unexpected")
+        }
+
+        @GetMapping("/binding")
+        fun binding(@RequestParam value: Long): ApiResponse<Long> = ApiResponse.ok(value)
+
+        @GetMapping("/required-header")
+        fun requiredHeader(@RequestHeader("X-Required") value: String): ApiResponse<String> = ApiResponse.ok(value)
+
+        @GetMapping("/unexpected")
+        fun unexpected(): ApiResponse<String> {
+            throw IllegalStateException("internal detail must not be exposed")
+        }
+
+        @GetMapping("/missing-message-key")
+        fun missingMessageKey(): ApiResponse<String> {
+            throw AiCharacterAdminApiException(HttpStatus.BAD_REQUEST, "missing.message.key")
+        }
+
+        @PostMapping("/media-type", consumes = [MediaType.APPLICATION_JSON_VALUE])
+        fun mediaType(): ApiResponse<String> = ApiResponse.ok("ok")
+
+        @PatchMapping("/media-type", consumes = [MediaType.APPLICATION_JSON_VALUE])
+        fun patchMediaType(): ApiResponse<String> = ApiResponse.ok("ok")
+
+        @PostMapping("/write-preflight")
+        fun postWritePreflight(): ApiResponse<String> = ApiResponse.ok("ok")
+
+        @PutMapping("/write-preflight")
+        fun putWritePreflight(): ApiResponse<String> = ApiResponse.ok("ok")
+
+        @PatchMapping("/write-preflight")
+        fun patchWritePreflight(): ApiResponse<String> = ApiResponse.ok("ok")
+
+        @DeleteMapping("/write-preflight")
+        fun deleteWritePreflight(): ApiResponse<String> = ApiResponse.ok("ok")
+
+        @GetMapping("/missing-path-variable")
+        fun missingPathVariable(@PathVariable("missing") value: Long): ApiResponse<Long> = ApiResponse.ok(value)
+
+        @PostMapping("/body-binding", consumes = [MediaType.APPLICATION_JSON_VALUE])
+        fun bodyBinding(@RequestBody request: BodyBindingRequest): ApiResponse<Long> = ApiResponse.ok(request.value)
+
+        @PostMapping("/method-argument-not-valid", consumes = [MediaType.APPLICATION_JSON_VALUE])
+        fun methodArgumentNotValid(@RequestBody request: BodyBindingRequest): ApiResponse<Long> {
+            val method = AiCharacterAdminErrorContractSampleController::class.java
+                .getDeclaredMethod("methodArgumentNotValid", BodyBindingRequest::class.java)
+            val bindingResult = BeanPropertyBindingResult(request, "request")
+            bindingResult.rejectValue("value", "invalid")
+            throw MethodArgumentNotValidException(MethodParameter(method, 0), bindingResult)
+        }
+
+        @PostMapping("/required-part", consumes = [MediaType.MULTIPART_FORM_DATA_VALUE])
+        fun requiredPart(@RequestPart("file") value: String): ApiResponse<String> = ApiResponse.ok(value)
+
+        @PostMapping("/multipart-error")
+        fun multipartError(): ApiResponse<String> {
+            throw MultipartException("malformed multipart request")
+        }
+
+        @PostMapping("/max-upload-size-error")
+        fun maxUploadSizeError(): ApiResponse<String> {
+            throw MaxUploadSizeExceededException(1L)
+        }
+    }
+
+    @TestComponent
+    @RestController
+    class AiCharacterAdminLegacyErrorContractSampleController {
+        @GetMapping("/phase1-legacy-error-contract")
+        fun sample(): ApiResponse<String> = ApiResponse.ok("legacy-ok")
+    }
+}
+
+data class BodyBindingRequest(
+    val value: Long
+)

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/AiCharacterAdminLoginJwtIntegrationTest.kt

@@ -0,0 +1,298 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter
+
+import com.jayway.jsonpath.JsonPath
+import kr.co.vividnext.sodalive.common.ApiResponse
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.member.MemberRepository
+import kr.co.vividnext.sodalive.member.MemberRole
+import kr.co.vividnext.sodalive.member.token.MemberTokenRepository
+import kr.co.vividnext.sodalive.support.EmbeddedRedisInitializer
+import org.junit.jupiter.api.AfterEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.ValueSource
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.boot.test.context.TestComponent
+import org.springframework.context.annotation.Import
+import org.springframework.http.HttpHeaders
+import org.springframework.http.MediaType
+import org.springframework.security.crypto.password.PasswordEncoder
+import org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.anonymous
+import org.springframework.security.web.firewall.RequestRejectedException
+import org.springframework.test.context.ContextConfiguration
+import org.springframework.test.web.servlet.MockMvc
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.options
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders.request
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.content
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.header
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers.status
+import org.springframework.transaction.annotation.Transactional
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+import java.net.URI
+
+@SpringBootTest
+@AutoConfigureMockMvc
+@Transactional
+@Import(AiCharacterAdminLoginJwtIntegrationTest.AiCharacterAdminLoginJwtSampleController::class)
+@ContextConfiguration(initializers = [EmbeddedRedisInitializer::class])
+class AiCharacterAdminLoginJwtIntegrationTest @Autowired constructor(
+    private val mockMvc: MockMvc,
+    private val memberRepository: MemberRepository,
+    private val memberTokenRepository: MemberTokenRepository,
+    private val passwordEncoder: PasswordEncoder
+) {
+    companion object {
+        private const val CHARACTER_ADMIN_ORIGIN = "https://character-admin.sodalive.net"
+        private const val GENERAL_ADMIN_ORIGIN = "https://admin.sodalive.net"
+        private const val UNTRUSTED_ORIGIN = "https://not-allowed.example.com"
+    }
+
+    @AfterEach
+    fun cleanUpMemberTokens() {
+        memberTokenRepository.deleteAll()
+    }
+
+    @Test
+    @DisplayName("관리자 로그인 JWT는 신규 AI 캐릭터 관리자 prefix를 통과하고 현재 DB role 강등 시 거부된다")
+    fun shouldAuthorizeAiCharacterAdminPrefixWithActualAdminLoginJwtAndCurrentRole() {
+        val admin = memberRepository.saveAndFlush(createMember(MemberRole.ADMIN))
+        val token = loginAdmin()
+
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/login-jwt/success")
+                .header(HttpHeaders.AUTHORIZATION, "Bearer $token")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+        )
+            .andExpect(status().isOk)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+            .andExpect(jsonPath("$.success").value(true))
+            .andExpect(jsonPath("$.data").value("ok"))
+
+        admin.role = MemberRole.USER
+        memberRepository.saveAndFlush(admin)
+
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/login-jwt/success")
+                .header(HttpHeaders.AUTHORIZATION, "Bearer $token")
+                .header(HttpHeaders.ACCEPT_LANGUAGE, "en")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+        )
+            .andExpect(status().isForbidden)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+            .andExpect(jsonPath("$.success").value(false))
+            .andExpect(jsonPath("$.message").value("You do not have permission."))
+    }
+
+    @Test
+    @DisplayName("실제 Spring context에서 신규 prefix 비회원 오류는 localized ApiResponse 401이다")
+    fun shouldReturnLocalizedUnauthorizedApiResponseInSpringContext() {
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/login-jwt/success")
+                .header(HttpHeaders.ACCEPT_LANGUAGE, "en")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                .with(anonymous())
+        )
+            .andExpect(status().isUnauthorized)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+            .andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON))
+            .andExpect(jsonPath("$.success").value(false))
+            .andExpect(jsonPath("$.message").value("Please check your login information."))
+    }
+
+    @Test
+    @DisplayName("실제 Spring context에서 신규 prefix는 캐릭터 관리자 Origin preflight만 허용한다")
+    fun shouldAllowOnlyCharacterAdminOriginPreflightInSpringContext() {
+        mockMvc.perform(
+            options("/api/v2/admin/ai-characters/login-jwt/success")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, "GET")
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_HEADERS, "authorization,content-type")
+        )
+            .andExpect(status().isOk)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+
+        mockMvc.perform(
+            options("/api/v2/admin/ai-characters/login-jwt/success")
+                .header(HttpHeaders.ORIGIN, GENERAL_ADMIN_ORIGIN)
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, "GET")
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_HEADERS, "authorization,content-type")
+        )
+            .andExpect(status().isForbidden)
+            .andExpect(header().doesNotExist(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN))
+    }
+
+    @ParameterizedTest
+    @ValueSource(
+        strings = [
+            "http://localhost:8888",
+            "https://creator.sodalive.net",
+            "https://test-creator.sodalive.net",
+            "https://test-admin.sodalive.net",
+            GENERAL_ADMIN_ORIGIN,
+            "https://test-character-admin.sodalive.net",
+            CHARACTER_ADMIN_ORIGIN
+        ]
+    )
+    @DisplayName("공유 관리자 로그인과 로그아웃은 기존 관리자와 캐릭터 관리자 Origin을 허용한다")
+    fun shouldAllowAdminOriginsForSharedAuthenticationEndpoints(origin: String) {
+        mockMvc.perform(
+            options("/admin/member/login")
+                .header(HttpHeaders.ORIGIN, origin)
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, "POST")
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_HEADERS, "content-type")
+        )
+            .andExpect(status().isOk)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, origin))
+
+        mockMvc.perform(
+            options("/member/logout")
+                .header(HttpHeaders.ORIGIN, origin)
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, "POST")
+                .header(HttpHeaders.ACCESS_CONTROL_REQUEST_HEADERS, "authorization")
+        )
+            .andExpect(status().isOk)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, origin))
+    }
+
+    @Test
+    @DisplayName("공유 관리자 로그인과 로그아웃은 미등록 Origin을 거부한다")
+    fun shouldRejectUntrustedOriginForSharedAuthenticationEndpoints() {
+        listOf("/admin/member/login", "/member/logout").forEach { path ->
+            mockMvc.perform(
+                options(path)
+                    .header(HttpHeaders.ORIGIN, UNTRUSTED_ORIGIN)
+                    .header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, "POST")
+            )
+                .andExpect(status().isForbidden)
+                .andExpect(header().doesNotExist(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN))
+        }
+    }
+
+    @Test
+    @DisplayName("캐릭터 관리자 Origin은 공유 인증 외 legacy/public 경로로 확산되지 않는다")
+    fun shouldNotApplyCharacterAdminCorsToOtherEndpoints() {
+        listOf("/api/v2/home/recommendations/ai-characters", "/api/v2/admin/ai-characters-shadow").forEach { path ->
+            mockMvc.perform(
+                options(path)
+                    .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                    .header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, "GET")
+            )
+                .andExpect(status().isForbidden)
+                .andExpect(header().doesNotExist(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN))
+        }
+    }
+
+    @Test
+    @DisplayName("캐릭터 관리자 Origin에서 기존 관리자 로그인과 공통 로그아웃을 호출한다")
+    fun shouldLoginAndLogoutFromCharacterAdminOrigin() {
+        memberRepository.saveAndFlush(createMember(MemberRole.ADMIN))
+        val token = loginAdmin()
+
+        mockMvc.perform(
+            post("/member/logout")
+                .header(HttpHeaders.AUTHORIZATION, "Bearer $token")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+        )
+            .andExpect(status().isOk)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+
+        mockMvc.perform(
+            get("/api/v2/admin/ai-characters/login-jwt/success")
+                .header(HttpHeaders.AUTHORIZATION, "Bearer $token")
+                .header(HttpHeaders.ACCEPT_LANGUAGE, "en")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+        )
+            .andExpect(status().isUnauthorized)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+            .andExpect(jsonPath("$.success").value(false))
+            .andExpect(jsonPath("$.message").value("Please check your login information."))
+    }
+
+    @Test
+    @DisplayName("허용된 캐릭터 관리자 Origin의 비표준 method는 localized 400 ApiResponse와 CORS를 반환한다")
+    fun shouldReturnLocalizedBadRequestForRejectedMethodFromCharacterAdminOrigin() {
+        mockMvc.perform(
+            request("PROPFIND", URI.create("/api/v2/admin/ai-characters/login-jwt/success"))
+                .header(HttpHeaders.ACCEPT_LANGUAGE, "en")
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+        )
+            .andExpect(status().isBadRequest)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+            .andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON))
+            .andExpect(jsonPath("$.success").value(false))
+            .andExpect(jsonPath("$.message").value("Invalid request."))
+    }
+
+    @Test
+    @DisplayName("허용된 캐릭터 관리자 Origin의 위험 URL은 400 ApiResponse와 CORS를 반환한다")
+    fun shouldReturnBadRequestForRejectedDangerousUrlFromCharacterAdminOrigin() {
+        mockMvc.perform(
+            request("GET", URI.create("/api/v2/admin/ai-characters//login-jwt/success"))
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+        )
+            .andExpect(status().isBadRequest)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+            .andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON))
+            .andExpect(jsonPath("$.success").value(false))
+    }
+
+    @Test
+    @DisplayName("미허용 Origin의 신규 prefix 비표준 method는 CORS 정책 403으로 종료한다")
+    fun shouldRejectRejectedMethodFromUntrustedOriginWithoutCorsHeader() {
+        mockMvc.perform(
+            request("PROPFIND", URI.create("/api/v2/admin/ai-characters/login-jwt/success"))
+                .header(HttpHeaders.ORIGIN, UNTRUSTED_ORIGIN)
+        )
+            .andExpect(status().isForbidden)
+            .andExpect(header().doesNotExist(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN))
+    }
+
+    @Test
+    @DisplayName("legacy 경로의 비표준 method는 기존 firewall fallback을 유지한다")
+    fun shouldKeepLegacyFirewallFallbackForRejectedMethod() {
+        assertThrows<RequestRejectedException> {
+            mockMvc.perform(request("PROPFIND", URI.create("/api/v2/home/recommendations")))
+        }
+    }
+
+    private fun loginAdmin(): String {
+        val result = mockMvc.perform(
+            post("/admin/member/login")
+                .contentType(MediaType.APPLICATION_JSON)
+                .header(HttpHeaders.ORIGIN, CHARACTER_ADMIN_ORIGIN)
+                .content("""{"email":"admin-jwt@test.com","password":"password"}""")
+        )
+            .andExpect(status().isOk)
+            .andExpect(header().string(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, CHARACTER_ADMIN_ORIGIN))
+            .andExpect(jsonPath("$.success").value(true))
+            .andReturn()
+
+        return JsonPath.read(result.response.contentAsString, "$.data.token")
+    }
+
+    private fun createMember(role: MemberRole): Member {
+        return Member(
+            email = "admin-jwt@test.com",
+            password = passwordEncoder.encode("password"),
+            nickname = "admin-jwt",
+            role = role
+        )
+    }
+
+    @TestComponent
+    @RestController
+    @RequestMapping("/api/v2/admin/ai-characters/login-jwt")
+    class AiCharacterAdminLoginJwtSampleController {
+        @GetMapping("/success")
+        fun success(): ApiResponse<String> = ApiResponse.ok("ok")
+    }
+}

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/AiCharacterAdminTargetResolverIntegrationTest.kt

@@ -0,0 +1,152 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter
+
+import kr.co.vividnext.sodalive.chat.character.ChatCharacter
+import kr.co.vividnext.sodalive.chat.character.repository.ChatCharacterRepository
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.member.MemberKind
+import kr.co.vividnext.sodalive.member.MemberRepository
+import kr.co.vividnext.sodalive.member.MemberRole
+import kr.co.vividnext.sodalive.support.EmbeddedRedisInitializer
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.application.AiCharacterAdminTargetResolver
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.error.AiCharacterAdminApiException
+import org.hibernate.Hibernate
+import org.hibernate.SessionFactory
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertThrows
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Test
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.http.HttpStatus
+import org.springframework.test.context.ContextConfiguration
+import org.springframework.transaction.annotation.Transactional
+import javax.persistence.EntityManager
+import javax.persistence.EntityManagerFactory
+
+@SpringBootTest(properties = ["spring.jpa.properties.hibernate.generate_statistics=true"])
+@Transactional
+@ContextConfiguration(initializers = [EmbeddedRedisInitializer::class])
+class AiCharacterAdminTargetResolverIntegrationTest @Autowired constructor(
+    private val resolver: AiCharacterAdminTargetResolver,
+    private val memberRepository: MemberRepository,
+    private val chatCharacterRepository: ChatCharacterRepository,
+    private val entityManager: EntityManager,
+    private val entityManagerFactory: EntityManagerFactory
+) {
+    @Test
+    @DisplayName("요청한 캐릭터와 연결된 AI 캐릭터 Member를 실제 DB에서 해석한다")
+    fun shouldResolveRequestedCharacterCreatorMemberFromDatabase() {
+        val requestedMember = memberRepository.save(createMember("requested"))
+        val otherMember = memberRepository.save(createMember("other"))
+        val requestedCharacter = chatCharacterRepository.save(createCharacter("requested", requestedMember))
+        val otherCharacter = chatCharacterRepository.save(createCharacter("other", otherMember))
+        entityManager.flush()
+        entityManager.clear()
+
+        val target = resolver.resolve(requestedCharacter.id!!)
+
+        assertEquals(requestedCharacter.id, target.characterId)
+        assertEquals(requestedCharacter.id, target.chatCharacter.id)
+        assertEquals(requestedMember.id, target.creatorMember.id)
+        assertEquals(otherCharacter.id, chatCharacterRepository.findByCreatorMemberId(otherMember.id!!)?.id)
+    }
+
+    @Test
+    @DisplayName("캐릭터 조회 시 creatorMember를 함께 조회한다")
+    fun shouldFetchCreatorMemberWithCharacter() {
+        val member = memberRepository.save(createMember("fetch"))
+        val character = chatCharacterRepository.save(createCharacter("fetch", member))
+        entityManager.flush()
+        entityManager.clear()
+
+        val found = chatCharacterRepository.findByIdWithCreatorMember(character.id!!)
+
+        assertEquals(character.id, found?.id)
+        assertTrue(found != null && Hibernate.isInitialized(found.creatorMember))
+        assertEquals(member.id, found?.creatorMember?.id)
+    }
+
+    @Test
+    @DisplayName("유효하지 않은 creator를 거부하고 DB insert/update/delete를 만들지 않는다")
+    fun shouldRejectInvalidCreatorWithoutDatabaseMutation() {
+        val humanMember = memberRepository.save(createMember("human", memberKind = MemberKind.HUMAN))
+        val character = chatCharacterRepository.save(createCharacter("human", humanMember))
+        entityManager.flush()
+        entityManager.clear()
+        val memberCount = memberRepository.count()
+        val characterCount = chatCharacterRepository.count()
+        val statistics = entityManagerFactory.unwrap(SessionFactory::class.java).statistics
+        statistics.clear()
+
+        val exception = assertThrows(AiCharacterAdminApiException::class.java) {
+            resolver.resolve(character.id!!)
+        }
+        entityManager.flush()
+        entityManager.clear()
+
+        assertEquals(HttpStatus.BAD_REQUEST, exception.status)
+        assertEquals("common.error.invalid_request", exception.messageKey)
+        assertEquals(0L, statistics.entityInsertCount)
+        assertEquals(0L, statistics.entityUpdateCount)
+        assertEquals(0L, statistics.entityDeleteCount)
+        assertEquals(memberCount, memberRepository.count())
+        assertEquals(characterCount, chatCharacterRepository.count())
+        assertEquals(MemberKind.HUMAN, memberRepository.findById(humanMember.id!!).orElseThrow().memberKind)
+    }
+
+    @Test
+    @DisplayName("AI 캐릭터 Member라도 CREATOR role이 아니면 거부하고 DB를 변경하지 않는다")
+    fun shouldRejectWrongRoleAiCharacterMemberWithoutDatabaseMutation() {
+        val userMember = memberRepository.save(createMember("user", role = MemberRole.USER))
+        val character = chatCharacterRepository.save(createCharacter("user", userMember))
+        entityManager.flush()
+        entityManager.clear()
+        val memberCount = memberRepository.count()
+        val characterCount = chatCharacterRepository.count()
+        val statistics = entityManagerFactory.unwrap(SessionFactory::class.java).statistics
+        statistics.clear()
+
+        val exception = assertThrows(AiCharacterAdminApiException::class.java) {
+            resolver.resolve(character.id!!)
+        }
+        entityManager.flush()
+        entityManager.clear()
+
+        val savedMember = memberRepository.findById(userMember.id!!).orElseThrow()
+        assertEquals(HttpStatus.BAD_REQUEST, exception.status)
+        assertEquals("common.error.invalid_request", exception.messageKey)
+        assertEquals(0L, statistics.entityInsertCount)
+        assertEquals(0L, statistics.entityUpdateCount)
+        assertEquals(0L, statistics.entityDeleteCount)
+        assertEquals(memberCount, memberRepository.count())
+        assertEquals(characterCount, chatCharacterRepository.count())
+        assertEquals(MemberRole.USER, savedMember.role)
+        assertEquals(MemberKind.AI_CHARACTER, savedMember.memberKind)
+    }
+
+    private fun createCharacter(name: String, creatorMember: Member): ChatCharacter {
+        return ChatCharacter(
+            characterUUID = "character-$name-${System.nanoTime()}",
+            name = "character-$name",
+            description = "description-$name",
+            systemPrompt = "system-prompt-$name"
+        ).apply {
+            this.creatorMember = creatorMember
+        }
+    }
+
+    private fun createMember(
+        name: String,
+        role: MemberRole = MemberRole.CREATOR,
+        memberKind: MemberKind = MemberKind.AI_CHARACTER
+    ): Member {
+        return Member(
+            email = if (memberKind == MemberKind.HUMAN) "$name@example.com" else null,
+            password = if (memberKind == MemberKind.HUMAN) "password" else "",
+            nickname = "member-$name",
+            role = role,
+            memberKind = memberKind
+        )
+    }
+}

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/admin/aicharacter/AiCharacterAdminTargetResolverTest.kt

@@ -0,0 +1,145 @@
+package kr.co.vividnext.sodalive.v2.api.admin.aicharacter
+
+import kr.co.vividnext.sodalive.chat.character.ChatCharacter
+import kr.co.vividnext.sodalive.chat.character.repository.ChatCharacterRepository
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.member.MemberKind
+import kr.co.vividnext.sodalive.member.MemberRole
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.application.AiCharacterAdminTargetResolver
+import kr.co.vividnext.sodalive.v2.api.admin.aicharacter.error.AiCharacterAdminApiException
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertSame
+import org.junit.jupiter.api.Assertions.assertThrows
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Test
+import org.mockito.Mockito
+import org.springframework.http.HttpStatus
+
+class AiCharacterAdminTargetResolverTest {
+    private val chatCharacterRepository = Mockito.mock(ChatCharacterRepository::class.java)
+    private val resolver = AiCharacterAdminTargetResolver(chatCharacterRepository)
+
+    @Test
+    @DisplayName("유효한 AI 캐릭터 target에서 creatorMember를 해석한다")
+    fun shouldResolveAiCharacterCreatorMemberForAdminTarget() {
+        val creatorMember = createMember(id = 9001L)
+        val character = createCharacter(id = 101L, creatorMember = creatorMember)
+        Mockito.`when`(chatCharacterRepository.findByIdWithCreatorMember(101L)).thenReturn(character)
+
+        val target = resolver.resolve(101L)
+
+        assertEquals(101L, target.characterId)
+        assertSame(character, target.chatCharacter)
+        assertSame(creatorMember, target.creatorMember)
+    }
+
+    @Test
+    @DisplayName("존재하지 않는 캐릭터를 부작용 없이 거부한다")
+    fun shouldRejectMissingCharacterWithoutSideEffect() {
+        Mockito.`when`(chatCharacterRepository.findByIdWithCreatorMember(404L)).thenReturn(null)
+
+        val exception = assertThrows(AiCharacterAdminApiException::class.java) {
+            resolver.resolve(404L)
+        }
+
+        assertEquals(HttpStatus.BAD_REQUEST, exception.status)
+        assertEquals("common.error.invalid_request", exception.messageKey)
+        Mockito.verify(chatCharacterRepository).findByIdWithCreatorMember(404L)
+        Mockito.verifyNoMoreInteractions(chatCharacterRepository)
+    }
+
+    @Test
+    @DisplayName("CREATOR가 아닌 creatorMember를 부작용 없이 거부한다")
+    fun shouldRejectWrongRoleWithoutSideEffect() {
+        val member = createMember(id = 9001L, role = MemberRole.USER)
+        Mockito.`when`(chatCharacterRepository.findByIdWithCreatorMember(101L))
+            .thenReturn(createCharacter(id = 101L, creatorMember = member))
+
+        val exception = assertThrows(AiCharacterAdminApiException::class.java) {
+            resolver.resolve(101L)
+        }
+
+        assertEquals(HttpStatus.BAD_REQUEST, exception.status)
+        assertEquals("common.error.invalid_request", exception.messageKey)
+        Mockito.verify(chatCharacterRepository).findByIdWithCreatorMember(101L)
+        Mockito.verifyNoMoreInteractions(chatCharacterRepository)
+    }
+
+    @Test
+    @DisplayName("HUMAN creatorMember를 부작용 없이 거부한다")
+    fun shouldRejectHumanCreatorMemberWithoutSideEffect() {
+        val member = createMember(id = 9001L, memberKind = MemberKind.HUMAN)
+        Mockito.`when`(chatCharacterRepository.findByIdWithCreatorMember(101L))
+            .thenReturn(createCharacter(id = 101L, creatorMember = member))
+
+        val exception = assertThrows(AiCharacterAdminApiException::class.java) {
+            resolver.resolve(101L)
+        }
+
+        assertEquals(HttpStatus.BAD_REQUEST, exception.status)
+        assertEquals("common.error.invalid_request", exception.messageKey)
+        Mockito.verify(chatCharacterRepository).findByIdWithCreatorMember(101L)
+        Mockito.verifyNoMoreInteractions(chatCharacterRepository)
+    }
+
+    @Test
+    @DisplayName("creatorMember가 없는 캐릭터를 부작용 없이 거부한다")
+    fun shouldRejectMissingCreatorMemberWithoutSideEffect() {
+        Mockito.`when`(chatCharacterRepository.findByIdWithCreatorMember(101L))
+            .thenReturn(createCharacter(id = 101L, creatorMember = null))
+
+        val exception = assertThrows(AiCharacterAdminApiException::class.java) {
+            resolver.resolve(101L)
+        }
+
+        assertEquals(HttpStatus.BAD_REQUEST, exception.status)
+        assertEquals("common.error.invalid_request", exception.messageKey)
+        Mockito.verify(chatCharacterRepository).findByIdWithCreatorMember(101L)
+        Mockito.verifyNoMoreInteractions(chatCharacterRepository)
+    }
+
+    @Test
+    @DisplayName("여러 캐릭터 fixture 중 요청한 캐릭터만 해석한다")
+    fun shouldResolveOnlyRequestedCharacterFixture() {
+        val creatorMember = createMember(id = 9001L)
+        val otherCreatorMember = createMember(id = 9002L)
+        val requestedCharacter = createCharacter(id = 101L, creatorMember = creatorMember)
+        val otherCharacter = createCharacter(id = 202L, creatorMember = otherCreatorMember)
+        Mockito.`when`(chatCharacterRepository.findByIdWithCreatorMember(101L)).thenReturn(requestedCharacter)
+        Mockito.`when`(chatCharacterRepository.findByIdWithCreatorMember(202L)).thenReturn(otherCharacter)
+
+        val target = resolver.resolve(101L)
+
+        assertEquals(101L, target.characterId)
+        assertEquals(9001L, target.creatorMember.id)
+        assertSame(requestedCharacter, target.chatCharacter)
+        Mockito.verify(chatCharacterRepository).findByIdWithCreatorMember(101L)
+        Mockito.verifyNoMoreInteractions(chatCharacterRepository)
+    }
+
+    private fun createCharacter(id: Long, creatorMember: Member?): ChatCharacter {
+        return ChatCharacter(
+            characterUUID = "character-$id",
+            name = "character-$id",
+            description = "description-$id",
+            systemPrompt = "system-prompt-$id"
+        ).apply {
+            this.id = id
+            this.creatorMember = creatorMember
+        }
+    }
+
+    private fun createMember(
+        id: Long,
+        role: MemberRole = MemberRole.CREATOR,
+        memberKind: MemberKind = MemberKind.AI_CHARACTER
+    ): Member {
+        return Member(
+            email = if (memberKind == MemberKind.HUMAN) "human-$id@example.com" else null,
+            password = "password",
+            nickname = "member-$id",
+            role = role,
+            memberKind = memberKind
+        ).apply { this.id = id }
+    }
+}