dieselbaby on Nostr: Something that might be viable (it'd take a lot of effort, though, and I'd have to ...

Something that might be viable (it'd take a lot of effort, though, and I'd have to look into what licenses the codebase was released under) would be forking/re-working some of the tech used on keybase.io; it has built-in git repos and could be modified to work with nostr IMO