the enlightened repository maintainers don’t allow any Firefox/Chromium forks
I thought you were talking about Void when you said that. I use it too. Someone packaged librewolf for void and maintainsa repo, it works: https://github.com/index-0/librewolf-void
He did all the heavy lifting though, writing the template and all that. Updating the package in the future shouldn’t require much more than updating the source destination in the template file when a new version comes out.