{"service":"Adform DB API","db":"adform.duckdb","endpoints":{"GET /api/tables":"list of views","GET /api/tables/{name}":"schema + preview (?limit=50)","POST /api/query":"{\"sql\": \"...\", \"limit\": 200}","GET /api/query?sql=...&format=csv":"download CSV"},"docs":"/docs (Swagger UI)"}