feat(admin): show group schedule status

apps/web/src/lib/group-schedule.ts

@@ -1,6 +1,11 @@
 export const MINUTES_PER_WEEK = 7 * 24 * 60;
 const MAX_WINDOWS = 50;
 
+export function groupScheduleStatus(windowCount: number) {
+  if (windowCount <= 0) return "Unrestricted";
+  return `${windowCount} ${windowCount === 1 ? "window" : "windows"}`;
+}
+
 export interface WeeklyAccessWindow {
   startMinuteOfWeek: number;
   endMinuteOfWeek: number;