200 OK — session open
> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01f1jim9 72ms POST /ai/v1/search {} Idempotency-Key: YBXI_WpFD7Il Send ▶> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01f1jim9 72ms POST /ai/v1/search {} Idempotency-Key: YBXI_WpFD7Il Send ▶