POST /api/ingest
Authorization: Bearer <token>
Content-Type: application/json

{
  "traces": [
    {
      "source": "codex_jsonl",
      "sourceId": "session-123",
      "model": "gpt-5",
      "createdAt": "2026-06-04T12:00:00.000Z",
      "messages": [
        {
          "position": 0,
          "role": "user",
          "content": "Build a trace uploader.",
          "tokenCount": 6,
          "createdAt": "2026-06-04T12:00:00.000Z"
        }
      ]
    }
  ]
}

{
  "ok": true,
  "jobId": "019e...",
  "status": "queued"
}