- Disable printing by setting `printEnable = false`.
- Add a new `virualization` module enabling libvirtd, virt‑manager,
qemuGuest and spice‑vdagentd; enable it on the desktop host.
- Change default applications: enable GIMP, disable Pixieditor.
- Bump Helium AppImage to version 0.14.4.1 with updated hash.
- Lower notification sound volume from 0.5 to 0.1.
- Refactor Bash and Fish aliases: `upd` now updates flakes,
`upg` performs OS switch, and new helper aliases are added.
Add printers.nix for Garand‑Desktop, Garand‑Laptop, and default hosts
with
printer definitions and a printEnable flag. Disable NFS by default in
the
host variables. Rewrite modules/core/printing.nix to import printer
settings, enable services only when printing is enabled, and add more
CUPS/Avahi options plus hardware.printers configuration. Add the lpadmin
group to the main user. Update the Messenger desktop entry URL to the
Facebook Messages page.