Added a new GitHub Actions workflow .github/workflows/manjaro-package-build.yml that:
runs in a manjarolinux/base container,
installs Manjaro packaging/build tooling,
builds via makepkg as a non-root user,
generates .SRCINFO,
runs namcap checks on both PKGBUILD and the built package,
uploads package artifacts plus PKGBUILD/.SRCINFO.