- Remove nos2x and NostrConnect support
- Create new NostrAuthService using Alby (window.nostr NIP-07)
- Replace useNostrConnect with useNostrAuth in all components
- Update NostrRemoteSigner to use Alby for signing
- Delete NostrConnect-related files (nostrconnect.ts, handlers, etc.)
- Update documentation to reflect Alby-only authentication
- Remove NOSTRCONNECT_BRIDGE environment variable
- All TypeScript checks pass