Remove gradient background and encryption footer from the full card, use
a clean bordered card with centered sender description. Add
EncryptedMessageCompact for quote posts, reply indicators, and the reply
composer — dispatched from EmbeddedNote like vanish events.
Kind 4 (NIP-04 encrypted DM) events were rendering their encrypted
content as plain text. Now they show a visual card with sender and
recipient avatars connected by a mail icon, with encryption type
detection (NIP-04 vs NIP-44) displayed in a footer badge with a lock icon.
Registered kind 4 across NoteCard, PostDetailPage, and CommentContext.
sam