Break down monolithic script into focused components:
- 00-system-prep.sh: system updates and Flathub
- 01-package-install.sh: system packages and Flatpaks
- 02-dev-tools-setup.sh: Neovim, fonts, shell tools
- 03-fedora-dotnet-setup.sh: .NET development environment
- 04-config-symlinks.sh: dotfile symlinking
Fixes:
- Use rpm -q for accurate package checks
- Dynamic Fedora version detection
- Replace neofetch with fastfetch
- Correct dotfile names (aliases.zsh, commit-conventions.txt)
