Move the form-factor-agnostic settings (systemd-boot, swayDesktop, dvorak
console, firewall) into a shared workstation.nix so laptop.nix and the new
desktop.nix can both import them without drifting. laptop.nix keeps only the
iwd Wi-Fi backend.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Emma Thorpe