200 OK — session open
> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_0144k61a 21ms POST /ai/v1/search {} Idempotency-Key: _40MtUMOeEjX Send ▶> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_0144k61a 21ms POST /ai/v1/search {} Idempotency-Key: _40MtUMOeEjX Send ▶