Each script installs the DE meta-package, an appropriate display manager,
PipeWire audio, NetworkManager, Bluetooth, and Flatpak, then enables the
relevant services (sddm/gdm/lightdm/cosmic-greeter).
COSMIC falls back to sddm if cosmic-greeter is not installed.
tui-install.sh: DE menu expanded from 3 to 8 entries (height 20×70).
install-modules.sh: DEs added to checklist, summary, and dispatch so
they can be installed standalone on an existing system.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>