200 OK — session open
> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01ql0ygb 64ms POST /ai/v1/search {} Idempotency-Key: ig-eWuhe4T2d Send ▶> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01ql0ygb 64ms POST /ai/v1/search {} Idempotency-Key: ig-eWuhe4T2d Send ▶