The cache-peek approach always returned npub because the cache was empty
at render time. Replace it with a proper hook that calls useNip05Verify,
relying on TanStack Query's deduplication to avoid redundant requests.
Also fix the dot separator in NoteCard to hide when NIP-05 is unverified,
and refactor ProfileSearchDropdown to pass the verified URL through
onClick rather than recomputing it in an event handler.
Alex Gleason
64cf10f381