Ah it sounds like youre a maintainer or contributor on Hubzilla, didnt know that. In fact I am currently working on OAuth-based SSO for Ibis. And making it federate with Hubzilla wikis would definitely be good. For now Ibis doesnt federate with any other Fediverse platforms and has some compatibility problems. In the near future I will make a major rewrite of the federation logic to get that working properly.

Yes that would definitely be helpful for the project.

Im not familiar with the specs, for now Im only implementing basic OAuth (and only the part where users can login to Ibis with an account from another website). I didnt know about Openwebauth, maybe that could be supported at some point in the future.