- netinstall.yaml: add 'Desktop' group with 8 DEs as subgroups (Plasma default-selected, Xfce, Cinnamon, MATE, LXQt, i3, Sway, Hyprland) — users pick their DE during online install - profile.yaml: move KDE Plasma (plasma group + apps) from rootfs/packages to livefs/packages so it's only installed when user selects it in netinstall; rootfs now has only DE-neutral packages (firefox, calamares, libs, etc.)