- Replace yunohost grub theme with skylanix theme
- Update isolinux menu colors to skylanix branding (#4490a5)
- Refactor preseed configuration with improved package management
- Move Firefox Mozilla installation to main preseed
- Consolidate user shell configuration and system setup
- Streamline late custom scripts for AMD and NVIDIA variants
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
