200 OK — session open
> POST /ai/v1/session {}
< 200 OK req_001lgycd 27ms POST /ai/v1/search {} Idempotency-Key: LtHpmOX3B_Ww Send ▶> POST /ai/v1/session {}
< 200 OK req_001lgycd 27ms POST /ai/v1/search {} Idempotency-Key: LtHpmOX3B_Ww Send ▶