dest/current/ stays a plain mirror; deleted/overwritten files are moved to
dest/versions/YYYY-MM-DD/ so accidental deletions are recoverable while
intentional --delete still propagates. Unchanged files in version folders
are hardlinked via --link-dest to avoid extra disk cost. Supports local and
remote (SSH) source/destination paths, saved jobs, and a cron hint.
https://claude.ai/code/session_015SmW4EAD6mMLZGVCygy3GR
