Thanks for the Kind words! Activitypub integration is in our todo list for sure! No one has started an implementation yet but there is an issue https://codeberg.org/Klasse-Methode/lauti/issues/11 where progress can be tracked.
We also have a matrix room to chat about lauti which would be a good place to discuss this further :) https://matrix.to/#/#lauti-community:matrix.org