200 OK — session open
> POST /ai/v1/session {}
< 200 OK req_01kn0ci5 30ms POST /ai/v1/search {} Idempotency-Key: 8jmSgPs0MO-f Send ▶> POST /ai/v1/session {}
< 200 OK req_01kn0ci5 30ms POST /ai/v1/search {} Idempotency-Key: 8jmSgPs0MO-f Send ▶