Start or continue a structured `ztlctl` research session.

## Workflow

1. Call `session_status`.
2. If a session is already open, show it and ask whether to continue it or close it later.
3. If no session is open, call `create_log` with the user topic.
4. Call `list_items` with `sort=recency`, `limit=5` for recent activity.
5. Call `work_queue` for actionable tasks.
6. Summarize the current session id, recent activity, and likely next moves.

## Guidance

{{ modules.session_lifecycle }}
