Human-readable names layer on top of key-based .nostr domains

[melvincarvalho]

<npub>.nostr is self-certifying but not human-friendly. pkarr deliberately punts on naming; Nomen solves it with bitcoin-anchored names.

Keep the same discipline — keys as the root of trust, human names as sugar on top:

• Petname-style local mappings in the resolver
• nip-05 (_@domain) as a bidirectional hint: domain → pubkey via nip-05, pubkey → domain via kind 31034 / did:nostr, verified when both directions agree
• Optionally interop with Nomen names

Related: https://github.com/ursuscamp/nomen/blob/master/docs/SPEC.md