The point of the new inventory tool is this commit: packages/blankpad.pkgs declared one package
while the machine had 24 more that no rebuild would reproduce. Declaring them changes nothing on
the running box (install.sh installs only what is missing — its delta is now empty) and makes a
fresh install faithful to this one.
nirimod-git is left undeclared on purpose: it is AUR-only and aur.pkgs is fleet-wide, so declaring
it there would make the headless servers build a niri module.
Refs #51
Frank