200 OK — session open
> POST /ai/v1/session {}
< 200 OK req_001qk7t4 83ms POST /ai/v1/search {} Idempotency-Key: 4_35a51sv3BM Send ▶> POST /ai/v1/session {}
< 200 OK req_001qk7t4 83ms POST /ai/v1/search {} Idempotency-Key: 4_35a51sv3BM Send ▶