- skill-rag-file: GET /api/download/{document_id} 추가 필요
- skill-slack: POST /api/v1/files/upload 추가 필요
- coldmail_briefing.py:159-204: 파일 다운로드 → 업로드 → file_id 통합 필요
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Co-Authored-By: Claude <noreply@anthropic.com>