Write a session export
POST /v1/export/session
Each step:
agent, tool, args, result_ref.Contains
recalled_papers and recalled_claims.{ "written": bool, "session_id": str }.
Query exports
GET /v1/export?session_id={id}&since={iso}&until={iso}
ISO date.
ISO date.
Download JSONL
GET /v1/export/download?since={iso}&until={iso} → plain-text JSONL, one record per
line (Content-Type: text/plain).