fix: dashboard counters refresh after status changes

When a booking status is changed, confirmed, or deleted in any tab,
the dashboard summary cards re-fetch to show updated counts. Previously
the dashboard was stale until page reload.

src/app/admin/bookings/page.tsx

@@ -230,7 +230,7 @@ function ConfirmModal({
 interface ScheduleClassInfo { type: string; trainer: string; time: string; day: string; hall: string; address: string; groupId?: string }
 interface ScheduleLocation { name: string; address: string; days: { day: string; classes: { time: string; trainer: string; type: string; groupId?: string }[] }[] }
 
-function GroupBookingsTab({ filter }: { filter: BookingFilter }) {
+function GroupBookingsTab({ filter, onDataChange }: { filter: BookingFilter; onDataChange?: () => void }) {
   const [bookings, setBookings] = useState<GroupBooking[]>([]);
   const [allClasses, setAllClasses] = useState<ScheduleClassInfo[]>([]);
   const [loading, setLoading] = useState(true);
@@ -284,6 +284,7 @@ function GroupBookingsTab({ filter }: { filter: BookingFilter }) {
       }) : Promise.resolve(),
     ]);
     setConfirmingId(null);
+    onDataChange?.();
   }
 
   if (loading) return <LoadingSpinner />;
@@ -296,6 +297,7 @@ function GroupBookingsTab({ filter }: { filter: BookingFilter }) {
         endpoint="/api/admin/group-bookings"
         filter={filter}
         onItemsChange={setBookings}
+        onDataChange={onDataChange}
         onConfirm={(id) => setConfirmingId(id)}
         renderExtra={(b) => (
           <>
@@ -700,6 +702,8 @@ function BookingsPageInner() {
   const [searchResults, setSearchResults] = useState<SearchResult[] | null>(null);
   const [statusFilter, setStatusFilter] = useState<BookingFilter>("all");
   const [refreshKey, setRefreshKey] = useState(0);
+  const [dashboardKey, setDashboardKey] = useState(0);
+  const refreshDashboard = useCallback(() => setDashboardKey((k) => k + 1), []);
   const lastTotalRef = useRef<number | null>(null);
   const { showError } = useToast();
 
@@ -814,7 +818,7 @@ function BookingsPageInner() {
       ) : (
         <>
           {/* Dashboard — what needs attention */}
-          <DashboardSummary key={refreshKey} onNavigate={setTab} />
+          <DashboardSummary key={`dash-${dashboardKey}-${refreshKey}`} onNavigate={setTab} />
 
           {/* Tabs */}
           <div className="mt-5 flex border-b border-white/10">
@@ -839,9 +843,9 @@ function BookingsPageInner() {
           {/* Tab content — auto-refreshes when new bookings detected */}
           <div className="mt-4" key={`tab-${refreshKey}`}>
             {tab === "reminders" && <RemindersTab />}
-            {tab === "classes" && <GroupBookingsTab filter={statusFilter} />}
-            {tab === "master-classes" && <McRegistrationsTab filter={statusFilter} />}
-            {tab === "open-day" && <OpenDayBookingsTab filter={statusFilter} />}
+            {tab === "classes" && <GroupBookingsTab filter={statusFilter} onDataChange={refreshDashboard} />}
+            {tab === "master-classes" && <McRegistrationsTab filter={statusFilter} onDataChange={refreshDashboard} />}
+            {tab === "open-day" && <OpenDayBookingsTab filter={statusFilter} onDataChange={refreshDashboard} />}
           </div>
         </>
       )}