200 OK — session open
> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_0128xd14 65ms POST /ai/v1/search {} Idempotency-Key: 8SLNLK_ha3wl Send ▶> POST /ai/v1/session {"source": "bobw"}
< 200 OK req_0128xd14 65ms POST /ai/v1/search {} Idempotency-Key: 8SLNLK_ha3wl Send ▶