The first prototype of zap.store ever featured something like this, @hzrd149 packaged the nostrudel PWA into a .pwa file that we assigned the application/pwa+zip mime type to (offline bundle). This "pwa" would then be deployed and served locally. Plan to put that back! Maybe we can work on an interoperable standard? 

 Sure, is there any functional implementation of this standard at the moment? 

Btw nostrudel is a highly capable PWA client, it could really play a very significant role in the Nostr web app ecosystem, especially micro-apps.  

 Agreed!

Implementation not really. But it's so simple, pretty much what I described is what we got working