Setup
One directory tonight, not the whole repo
Pick one directory you already mean to clean. 1. Write the list of files the bot may touch. That list is the scope. 2. Ask for one cleanup diff. Say: one pull request, nothing outside the list, no dependency bumps, no CI edits. 3. Read the diff. Delete any hunk you cannot explain out loud. 4. Merge only what you can explain. Stop if it opens a second pull request or pushes to the default branch. The Nightly Audit card, checked 13 September, says the job is one cleanup pull request per area. The count is the control. If you do not name the directory, the bot will, and the count stops meaning anything.
This does not review the bot. You still read the diff.