> Very cool project!

Thank you!

> Where can I learn more about this?

If you don't mind watching a video I gave this talk back in March that should be fairly comprehensive: https://youtu.be/3SxNBz1VTE0?si=R4ifrsfEUJfvjDPx

If you would prefer an article I recommend: https://freenet.org/about/news/summary-delta-sync/

> How is this different from CRDTs/CmRDTs?

It's very closely related, you can view Freenet contract state as a CmRDT, where the details of the merge operation are specified in the webassembly contract.