- Update NostrConnectService to use nos2x (window.nostr) by default
- Fallback to NostrConnect bridge only if nos2x is not available
- Update NostrRemoteSigner to use window.nostr.signEvent() for signing
- Add TypeScript definitions for NIP-07 window.nostr API
- Update documentation to reflect nos2x as primary authentication method
- Remove default use.nsec.app bridge URL
- All TypeScript checks pass
