200 OK — session open
> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_00hrrt6d 36ms POST /ai/v1/search {} Idempotency-Key: zVyI2y3b4iZ_ Send ▶> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_00hrrt6d 36ms POST /ai/v1/search {} Idempotency-Key: zVyI2y3b4iZ_ Send ▶