suggestion: `remove --all` instead of rollback

Please note that this is all imho, there are no right answers here, just opinions.

The rollback command seems a little out of place to me, as it does not do what I expect rollback to do: undo the last thing I did ...

That said, there is already a `remove` command, so if rollback is removing all, does it make more sense to just add an `--all` flag to remove all?

No files or tests are named. Start by reviewing the existing `rollback` and `remove` command entry points, then determine whether `remove --all` should replace or supplement `rollback`; the work is done only after the command behavior and interface are agreed and covered by the relevant tests.

Written by the indexing model from the issue text.