- Store an optional nip05 on each profile; publish it in kind 0 metadata
- set-nip05 CLI (+ validation, lower-casing, clear) and nip05-file helper
that prints the .well-known/nostr.json document for a domain
- Profiles screen: NIP-05 button, handle shown on cards, Nip05Modal with
client-side validation and Remove action
- Fix Modal stealing focus from autoFocus inputs one frame after open
