- Mark Samba File Sharing section as optional
- Mark Backup System section as optional
- Update interactive prompts section with new Samba/backup prompts
- Add note to Backup Configuration section about optional nature
- Update Samba section to indicate conditional installation
- Reorganize "Files Created" section by optional/required
- Update Security Notes to indicate optional features
- Add Samba file sharing installation and configuration to match
README documentation (was documented but not implemented)
- Rename ubuntu-readme.md to README.md for standard GitHub display
- Update download instructions with actual GitHub repository URLs
Claude