Hey @brightperegrine.bsky.social, we had a longer discussion on the delegated authorization over in this thread:
I think for now we’re just going to do an OAuth flow for the community account where you authenticate using your user account.
Tranquil actually has an implementation of something very similar which @nel.pet did a short writeup on over here: Tranquil account delegation: status and what we've learned
I think that’s be a good place to start if you want to explore UX!