Three changes folded together close the AUR-side parity gap with the
.deb packaging:
- PKGBUILD now ships fips.nft baseline and fips-firewall.service, with
fips.nft marked as backup so operator edits survive upgrades.
- PKGBUILD-git mirrors the release PKGBUILD: installs fips-gateway
(was missing entirely), ships fips.nft and fips-firewall.service,
and tracks the same backup() set.
- packaging/aur/README.md documents the gateway, firewall service,
and nft baseline that ship as of this revision.
AUR users now receive the same artifact set as .deb users.