200 OK — session open
> POST /ai/v1/session {}
< 200 OK req_01ksqpqx 50ms POST /ai/v1/search {} Idempotency-Key: VK4eZv2YkqsJ Send ▶> POST /ai/v1/session {}
< 200 OK req_01ksqpqx 50ms POST /ai/v1/search {} Idempotency-Key: VK4eZv2YkqsJ Send ▶