Nope, its partly on github, partly on the join-lemmy docs page, but mainly scattered across 4 matrix channels.

I think it does make sense because this is a discussion platform thats very organized and when people google an issue they can easily find it if its here

Ice Cubes without a doubt. Its open source, has quote-reposts, already supports bridge from activitypub to atProtocol (bluesky), and has great translation features