Slopclean

Clean the requested artifact in place. Meaning, facts, behavior, and public API do not change; house conventions win. One pass, not a sterilizing loop; a suite prune stops at its measured target.

Read the matching reference; source-and-test diffs need both: prose, code, tests.

Never weaken an assertion or delete the only coverage of a behavior; replace it in the same pass or report the gap. Report real defects and contract changes separately instead of fixing them in the pass.