Gramps.js how do I get started with the workflow for this

This fork has been undergoing massive change since @DavidMStraub announced the beta in July '21.

The “gramps.js : a web frontend to your Gramps database” thread has just be re-opened. This question is a continuation of that topic if David still considers it in beta cycle.

But if gramps.js is considered to be in full public release, it might be good to start a fresh thread.