Feature Request: option to see only active leases

Requesting additional command for
```pool auction leases```
where the output is only active leases rather than all the active + historical leases.

Perhaps ```pool auction leases --active-only``` ?

Start by locating the Go implementation and tests for `pool auction leases`, then read how the command distinguishes active and historical leases. Add an `--active-only` option and verify that the command output excludes historical leases while retaining active ones.

Written by the indexing model from the issue text.