List chat sessions

GET /v1/sessions — List the user's chat sessions with last-activity timestamp and turn count. Used by the web-UI session sidebar.

GET `/v1/sessions`

List the user's chat sessions with last-activity timestamp and turn count. Used by the web-UI session sidebar.


Method	`GET`
Path	`/v1/sessions`
Auth	`Authorization: Bearer <token>` required when `GATEWAY_AUTH_TOKEN` is set
Category	sessions