Blocks
Multi-file compositions of the registry's components, ready to drop into an app. They install into components/fma-ui/<block>/.
App Sidebar
An app-shell sidebar block, collapsible to icons: a team switcher (or a static logo), one navigation section per data.nav entry and a user menu. Driven by an AppSidebarData object, so teams, sections and items are data. Items with sub-items expand inline (variant: "collapse") or open a menu ("dropdown", and always while collapsed to icons). Links are react-aria Links: wrap the app in RouterProvider for client-side routing. onTeamChange, onAddTeam and onUserAction handle the menus. Render inside a SidebarProvider.
Event Calendar
A headless-first event calendar: month, week, day, N-day, agenda and resource views, recurring events (structured rules or RRULE strings), time zones, drag to move/resize and drag to create (keyboard users create through showDayAddButton's per-day buttons), i18n with RTL, and a subscribable store (useEventCalendar, useEventCalendarSelector). Compose <EventCalendar> with EventCalendarNav and EventCalendarContent, or build your own parts from the hooks. Events are controlled (events/onEventsChange) or not (defaultEvents); onEventUpdate accepts, rejects or adjusts each drag. The nav, view switcher, date picker and "+N more" popover use the registry's react-aria Button, Tooltip, DropdownMenu, Popover and Calendar.