This release will be updated by the CI, so that it can be used as a pacman repo.
Add this to the end of /etc/pacman.conf:
[ironrobin-x13s]
Server = https://github.com/ironrobin/x13s-alarm/releases/download/packages
Then add the key that the CI uses to sign the packages (this key is stored in GitHub secrets):
sudo pacman-key --recv-keys 6ED02751500A833A --keyserver pgp.mit.edu
sudo pacman-key --lsign-key 6ED02751500A833A
Then you should be able to install and update packages with pacman.