Bug fix: cut -d'/' -f2 truncated 'origin/backup/main-*' to just
'backup', so rev-parse always failed and duplicate detection never
worked. Fixed with sed to strip 'origin/' prefix properly.
New features:
- Push unpushed main commits before backing up
- Fetch remote backup refs before comparing
- Rich summary table: repo, status, commit count, push status, last msg
- Color-coded output with dim/bold formatting
- Proper cleanup using sed instead of broken cut
f82afb3872