remote-run.sh gains a checkout mode used by lib.sh: git checkout -- . and git clean -fd (target dirs, the sha stamps and
ignored files kept), fetch, branch at the commit, then a clean-tree check; the overlay follows. Before this, the rsync of
uncommitted files stayed in the box's tree and the next commit's git checkout -B refused with 'local changes would be
overwritten'. remote-run.sh --self-test reproduces the dirty tree (edited tracked file, untracked file, target dir, sha
stamp), shows the plain checkout refusing and the mode landing clean on the new commit; it runs in ci.yml and passed on the
Mac and the box; a live dirty-then-clean pair on the fork worktree passed too. Plan: section 5, gotchas of the first day.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>