diff --git a/design/backend/sequence/inner/meeting-회의종료_bk.puml b/design/backend/sequence/inner/meeting-회의종료_bk.puml
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--- a/design/backend/sequence/inner/meeting-회의종료_bk.puml
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-@startuml meeting-회의종료
-!theme mono
-
-title Meeting Service - 회의종료 내부 시퀀스
-
-participant "MeetingController" as Controller
-participant "MeetingService" as Service
-participant "SessionService" as SessionService
-participant "MeetingRepository" as MeetingRepo
-participant "SessionRepository" as SessionRepo
-participant "StatisticsService" as StatService
-database "Meeting DB<<E>>" as DB
-database "Redis Cache<<E>>" as Cache
-queue "Azure Event Hubs<<E>>" as EventHub
-
-[-> Controller: POST /meetings/{meetingId}/end
-activate Controller
-
-note over Controller
-경로 변수: meetingId
-사용자 정보: userId, userName, email
-end note
-
-Controller -> Controller: meetingId 유효성 검증
-
-Controller -> Service: endMeeting(meetingId, userId)
-activate Service
-
-' 회의 정보 조회
-Service -> MeetingRepo: findById(meetingId)
-activate MeetingRepo
-MeetingRepo -> DB: SELECT * FROM meetings WHERE id = ?
-activate DB
-DB --> MeetingRepo: 회의 정보
-deactivate DB
-MeetingRepo --> Service: Meeting
-deactivate MeetingRepo
-
-note over Service
-비즈니스 규칙 검증:
-- 회의가 존재하는지 확인
-- 회의 종료 권한 확인 (생성자만)
-- 회의 상태 확인 (IN_PROGRESS만 종료 가능)
-end note
-
-Service -> Service: 권한 검증\n(생성자만 종료 가능)
-
-Service -> Service: 회의 상태 확인
-
-alt 회의가 진행 중이 아님
-    Service --> Controller: 409 Conflict\n진행 중인 회의가 아님
-    return 409 Conflict
-else 종료 가능
-    ' 세션 정보 조회
-    Service -> SessionRepo: findActiveSession(meetingId)
-    activate SessionRepo
-    SessionRepo -> DB: SELECT * FROM meeting_sessions\nWHERE meetingId = ?\nAND status = 'ACTIVE'
-    activate DB
-    DB --> SessionRepo: 세션 정보
-    deactivate DB
-    SessionRepo --> Service: Session
-    deactivate SessionRepo
-
-    ' 세션 종료
-    Service -> SessionRepo: endSession(sessionId)
-    activate SessionRepo
-    SessionRepo -> DB: UPDATE meeting_sessions\nSET status = 'ENDED',\n    endedAt = NOW()\nWHERE id = ?
-    activate DB
-    DB --> SessionRepo: 업데이트 완료
-    deactivate DB
-    SessionRepo --> Service: 종료 성공
-    deactivate SessionRepo
-
-    ' 회의 상태 업데이트
-    Service -> MeetingRepo: updateStatus(meetingId, "ENDED")
-    activate MeetingRepo
-    MeetingRepo -> DB: UPDATE meetings\nSET status = 'ENDED',\n    actualEndTime = NOW()\nWHERE id = ?
-    activate DB
-    DB --> MeetingRepo: 업데이트 완료
-    deactivate DB
-    MeetingRepo --> Service: 업데이트 성공
-    deactivate MeetingRepo
-
-    note over Service
-    회의 통계 생성:
-    - 회의 총 시간
-    - 참석자 수
-    - 발언 횟수 (STT 데이터 기반)
-    - 주요 키워드
-    end note
-
-    ' 회의 통계 생성
-    Service -> StatService: generateMeetingStatistics(sessionId)
-    activate StatService
-
-    StatService -> DB: SELECT\n  COUNT(DISTINCT speakerId) as speakerCount,\n  COUNT(*) as utteranceCount,\n  TIMESTAMPDIFF(MINUTE, startedAt, endedAt) as duration\nFROM transcripts WHERE sessionId = ?
-    activate DB
-    DB --> StatService: 통계 데이터
-    deactivate DB
-
-    StatService -> DB: INSERT INTO meeting_statistics\n(meetingId, sessionId, duration,\nparticipantCount, utteranceCount, createdAt)
-    activate DB
-    DB --> StatService: 통계 저장 완료
-    deactivate DB
-
-    StatService --> Service: Statistics
-    deactivate StatService
-
-    ' 회의록 상태 업데이트
-    Service -> MeetingRepo: updateMinutesStatus(meetingId, "DRAFT")
-    activate MeetingRepo
-    MeetingRepo -> DB: UPDATE minutes\nSET status = 'DRAFT',\n    endedAt = NOW()\nWHERE meetingId = ?\nAND status = 'IN_PROGRESS'
-    activate DB
-    DB --> MeetingRepo: 업데이트 완료
-    deactivate DB
-    MeetingRepo --> Service: 업데이트 성공
-    deactivate MeetingRepo
-
-    ' 캐시 무효화
-    Service -> Cache: DELETE meeting:info:{meetingId}
-    activate Cache
-    Cache --> Service: 삭제 완료
-    deactivate Cache
-
-    note over Service
-    비동기 이벤트 발행:
-    - STT 서비스에 녹음 중지 요청
-    - AI 서비스에 최종 회의록 생성 요청
-    - 참석자에게 회의 종료 알림
-    end note
-
-    ' 이벤트 발행
-    Service -> EventHub: publish(MeetingEnded)\n{\n  meetingId, sessionId,\n  endedAt, statistics,\n  minutesId\n}
-    activate EventHub
-    EventHub --> Service: 발행 완료
-    deactivate EventHub
-
-    Service --> Controller: MeetingEndResponse
-    deactivate Service
-
-    note over Controller
-    응답 데이터:
-    {
-      "meetingId": "uuid",
-      "sessionId": "uuid",
-      "status": "ENDED",
-      "endedAt": "2025-01-23T15:00:00",
-      "statistics": {
-        "duration": 60,
-        "participantCount": 5,
-        "utteranceCount": 120
-      },
-      "minutesId": "uuid"
-    }
-    end note
-
-    return 200 OK\nMeetingEndResponse
-end
-
-deactivate Controller
-
-@enduml