Custom Designed on Nostr: That's the way it should be done. Static HTML. Generate HTML on the server if needed, ...

That's the way it should be done. Static HTML. Generate HTML on the server if needed, minimal javascript if needed (I use "Field Exit" to signal server when user tabs out of field). Did it since the 90s. Decent corporate sites do it that way (AT&T, although I have checked recently).

Google had a system where Java classes were "compiled" to javascript and downloaded to browser on demand, with software optimizing bandwidth and user memory tradeoffs. I believe Google Maps still uses this.

I notice a number of the Nostr offerings download JS code, which then generates the HTML. I don't like this, but I haven't contributed anything better.