✓ 데이터베이스 연결 성공
✓ conversion_jobs 테이블 생성 완료

📋 테이블 구조:
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Field                Type                 Null       Key       
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id                   varchar(64)          NO         PRI       
user_session         varchar(128)         NO         MUL       
input_file           varchar(512)         NO                   
output_file          varchar(512)         NO                   
input_format         varchar(32)          NO                   
output_format        varchar(32)          NO                   
converter_type       enum('video','audio','document','ebook','archive','font','image') NO                   
status               enum('pending','processing','completed','failed') YES        MUL       
progress             int(11)              YES                  
file_size_mb         decimal(10,2)        YES                  
conversion_options   longtext             YES                  
error_message        text                 YES                  
created_at           timestamp            YES        MUL       
updated_at           timestamp            YES                  
completed_at         timestamp            YES                  
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✅ 데이터베이스 설정 완료!