That is beautiful! It's certainly the first time a Cashu wallet can connect to Alby. How does it work, is there a Cashu wallet running in the background (in the browser?)?
The devs at nostr:npub1arcweuxy0zkdcg08sljh058qp02ytrgnpzh4csa3ar42szyfgrpsw6ggtw have build a Cashu wallet that works with NWC but afaik it can't export the connect string so that Alby can use it.
I want to use this so badly. It's the first time I would be able to zap on nostr from a Cashu wallet with a single click.
Congrats, definitely looking forward to diving into the code.