f06bfd1 and a940d91 removed eternalterminal-client/-server,
illogical-impulse-quickshell-git, meshy-git and pacserve from
packages.x86_64, but their .pkg.tar.zst files stayed in localrepo/ and
in local-aur.db. update.sh appends every localrepo package name back to
the list, which would bring the eternalterminal conflict back, and CI
shipped the conflicting packages into the image's /opt/localrepo.
Remove the files and their repo DB entries, re-sort the vulkan-* lines
in packages.x86_64, and drop the names from README.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>