[UIPKGE] Full-page notification center: unread badge, mark-all-read, All/Unread/Mentions tabs with functional filtering, day-grouped rows (Today / Earlier) pairing category icon tiles with titles, bodies, relative timestamps, unread dots and hover actions (mark read, dismiss). Per-tab empty states included;
pnpm dlx shadcn@latest add "https://registry.directory/r/uday-a/notification-center.json"