Robin is it's own plugin (reddit-plugin-robin). Besides no one person nor small team will be able to do this alone. You'd have to rip out the majority of the codebase and replace the authentication handler with an reddit oauth token flow (preferably as a jwt cookie). Getting / maintaining robin is to a certain point, unreasonable, because at only (4k iirc) users in a single room it started causing issues with Cassandra that propagated to the rest of the site.