200 OK — session open
> POST /ai/v1/session {}
< 200 OK req_01a5b1ft 53ms POST /ai/v1/search {} Idempotency-Key: _4KyArOuz_Vg Send ▶> POST /ai/v1/session {}
< 200 OK req_01a5b1ft 53ms POST /ai/v1/search {} Idempotency-Key: _4KyArOuz_Vg Send ▶