{"service": "md-notes pipeline", "usage": "POST /?filename=doc.docx&type=summary|quiz|slides", "params": {"filename": "required, e.g. lecture.docx", "type": "summary (default) | quiz | slides", "num_questions": "1..50 (default 10), used for quiz", "difficulty": "easy | medium | hard | mixed (default medium)"}, "supported_formats": [".csv", ".docx", ".md", ".pptx", ".txt", ".xls", ".xlsx"], "status": "GET /status/<job_id>"}