Vincent, thanx for a great summary.
however, I noticed a very small inconsistency.
CSS and version 5.7.11 does not seem to fit together.
NSS is one after 5.7.11 and CSS is on 7.x
I have done a curl -i https://idp.jouw.id and a
curl -i https://app.jouw.id and all I found is that the implementation seems to be based on Next.js
the ecosystem grows !