200 OK — session open
> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01302yt3 54ms POST /ai/v1/search {} Idempotency-Key: k2vPDE4D_7I1 Send ▶> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01302yt3 54ms POST /ai/v1/search {} Idempotency-Key: k2vPDE4D_7I1 Send ▶