- Add matugen to writable-mode backup script directory list
- Add matugen conflict handling to Home Manager activation script
- Handle both symlinked and regular matugen directories
- Prevents activation failures due to existing matugen configs
This resolves the 'mkdir: cannot create directory' and 'ln: failed to create symbolic link'
errors that occur when ~/.config/matugen already exists during Home Manager activation.
Celes Renata