200 OK — session open
> POST /ai/v1/session {}
< 200 OK req_0144bznn 60ms POST /ai/v1/search {} Idempotency-Key: YD3i4PfdvlSQ Send ▶> POST /ai/v1/session {}
< 200 OK req_0144bznn 60ms POST /ai/v1/search {} Idempotency-Key: YD3i4PfdvlSQ Send ▶