Note, htmlact (unreleased) is really just my own derivative of htmx see here for some hints.
This is again something that I stole from random readings on the web (it seems I didn’t record a precise reference in my notes but I remember these ideas being described in a few blog posts by different authors written when the web was still a nice place for humans :–). It’s super cool when you are developing and refining your initial data model. Once you have real data however, it helps but there’s no shortcut, the diffing provides you with the SQL for the schema structural changes but unless you changes are trivial proper hand written data migration procedures may still be needed.