stateDiagram-v2
[*] --> UPLOADED

UPLOADED --> PREPROCESSED: 전처리 성공
UPLOADED --> PREPROCESS_FAILED: 전처리 실패

PREPROCESSED --> REVIEWED_OK: 전처리 결과 승인
PREPROCESSED --> REVIEWED_FAIL: 전처리 결과 반려

PREPROCESS_FAILED --> UPLOADED: 문서 수정 후 재업로드
REVIEWED_FAIL --> UPLOADED: 문서 또는 전처리 재작업

REVIEWED_OK --> PUBLISHED: 게시 처리
PUBLISHED --> [*]