Thoughts on URI
First we need a URI spec for Nostr, maybe a simple NIP like BIP 21 identifying a few Nostr schemas. IIRC they don’t need to be final.
Then;
Anyone with the patience of an elephant and experience with browser’s politics willing to file tickets on Chromium, Mozilla, and Webkit/Apple's repos for “nostr:” URI? This will require a lot of wiki style politiquing. Literally hell. So a white knight is required.
If you work at any of these entities, I’d love to enlist you. ;)