update.sh replaced only the first sha256sums line and left orphan
hashes, so makepkg could not source PKGBUILD. Rewrite both deb and
launch-shim sums; reset pkgrel to 1 for the first 0.35.0 package.
Temporary Arch/CachyOS packaging until upstream ships a native package.
Pulls Cursor's amd64 deb by commit from the linux-x64 update feed.
Includes update script and Gitea Actions for bump + makepkg release.