200 OK — session open
> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01bw7xk1 77ms POST /ai/v1/search {} Idempotency-Key: Z_M1uWOcb65h Send ▶> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01bw7xk1 77ms POST /ai/v1/search {} Idempotency-Key: Z_M1uWOcb65h Send ▶