Introduce a `ventoy.enable` option (default false) and import the new
`modules/core/ventoy.nix` in the core module list. All host
`system-modules.nix` files now disable Ventoy explicitly.
Make the boot wallpaper configurable by importing `stylixImage` from the
host’s `variables.nix` and using it in `modules/core/boot.nix`.
Update each host’s `variables.nix` to set a default wallpaper and keep
many alternatives commented out.
Remove the obsolete `restart.noctalia` and `screenshootin` scripts,
their Nix wrappers, and the related Hyprland keybinding.
Add a collection of new wallpaper files and delete the old, unused
images.
Bump locked revisions for firefox‑addons, home‑manager, nixpkgs and
stylix in flake.lock, updating their lastModified timestamps, narHash
values and rev identifiers.
Change wallpaperStyle in boot.nix from lib.mkDefault to lib.mkForce to
ensure the centered style is always applied.
GarandPLG