200 OK — session open
> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01kl8nz6 52ms POST /ai/v1/search {} Idempotency-Key: YkHG-K-A6-Lr Send ▶> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01kl8nz6 52ms POST /ai/v1/search {} Idempotency-Key: YkHG-K-A6-Lr Send ▶