200 OK — session open
> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_007phkg0 70ms POST /ai/v1/search {} Idempotency-Key: 2_zNAR_BLLqQ Send ▶> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_007phkg0 70ms POST /ai/v1/search {} Idempotency-Key: 2_zNAR_BLLqQ Send ▶