- Rename Zapstore kind labels to include 'Zapstore' prefix across all
label registries (NoteCard, PostDetailPage, CommentContext,
ExternalContentHeader, NotificationsPage, extraKinds)
- Wrap Zapstore (32267, 30063, 3063) compact and detail content in
rounded bordered cards with hover effects; remove redundant mt-2/mt-3
margins from component roots
- Replace useLinkPreview thumbnail with metadata banner/picture in kind
31990 app handler cards (compact and full views)
- Add pt-4 to Zapstore detail card wrappers in PostDetailPage
- Fix sticky tab bar (SubHeaderBar z-10) being painted over by card
content: remove z-10 from AppHandlerContent inner div and add z-0 to
the main content column in MainLayout