It has deb package and rely on systemd service
As it’s a mostly a single binary in a DEB package (Install on Linux | Espanso), you can probably download it, verify it, extract the binary and place it in /usr/local/bin/ and then add the needed caps to it following the docs.
sorry bro, im noob on linux, though fedora sb would not handle deb package (i usually only install flatpaks and Dnf through toolbox) do you have any tutorial how to do this ?