200 OK — session open
> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01j3nkgf 18ms POST /ai/v1/search {} Idempotency-Key: _BgNIsi2BMvv Send ▶> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_01j3nkgf 18ms POST /ai/v1/search {} Idempotency-Key: _BgNIsi2BMvv Send ▶