So lots of talk in here ATM of it being a small project with a small and busy team etc, which is all totally fair.
I'd just like to add:
- You're awesome for wanting to get involved and to do some of the "other work" that is often easily and problematically neglected!!
- The fediverse, as you've been told here, is FOSS and voluntary, which means that if something doesn't exist it's just because someone hasn't done it yet! Which means just getting involved and doing things isn't only possible but kinda the whole point!
As for contacting devs and contributors, yes, the GitHub repos for both lemmy
and lemmyui
and the issues sections there.
But they are also on matrix and AFAICT a good amount of chat happens there, so that's probably where you want to go. I believe there's a link to their matrix space here: https://join-lemmy.org/docs/contributors/01-overview.html#contributing