I was looking at implementing #ActivityPub with #dasblog a while back, and I admittedly struggled and lost my enthusiasm for the project. However, I have found @mapache explanations and tutorials incredibly helpful and intuitive.
I am following his guide here: https://maho.dev/2024/02/a-guide-to-implement-activitypub-in-a-static-site-or-any-website/
DasBlog is not static so some of this does not apply, but enough does, and for the rest I can easily overlap gaps with the rich blogging engine. I am currently on step 5, this is happening!