The first prototype of zap.store ever featured something like this, nostr:npub1ye5ptcxfyyxl5vjvdjar2ua3f0hynkjzpx552mu5snj3qmx5pzjscpknpr 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?