fix: auto-refresh bookings silently instead of showing update banner

Polling detects new bookings and silently re-fetches tab data + dashboard
counts. No more "press to update" banner — data appears automatically.

src/app/admin/bookings/page.tsx

@@ -699,29 +699,24 @@ function BookingsPageInner() {
   const [addOpen, setAddOpen] = useState(false);
   const [searchResults, setSearchResults] = useState<SearchResult[] | null>(null);
   const [statusFilter, setStatusFilter] = useState<BookingFilter>("all");
-  const [newBookingsBanner, setNewBookingsBanner] = useState(false);
+  const [refreshKey, setRefreshKey] = useState(0);
   const lastTotalRef = useRef<number | null>(null);
   const { showError } = useToast();
 
-  // #10: Pause polling when browser tab not visible
+  // Poll for new bookings, auto-refresh silently
   useEffect(() => {
-    let id: ReturnType<typeof setInterval>;
-    function startPolling() {
-      id = setInterval(() => {
+    const id = setInterval(() => {
       if (document.hidden) return;
       adminFetch("/api/admin/unread-counts")
         .then((r) => r.json())
         .then((data: { total: number }) => {
           if (lastTotalRef.current !== null && data.total !== lastTotalRef.current) {
-              // #6: Show banner instead of remounting with key
-              setNewBookingsBanner(true);
+            setRefreshKey((k) => k + 1);
           }
           lastTotalRef.current = data.total;
         })
         .catch(() => {});
     }, 10000);
-    }
-    startPolling();
     return () => clearInterval(id);
   }, []);
 
@@ -772,16 +767,6 @@ function BookingsPageInner() {
         </button>
       </div>
 
-      {/* #6: New bookings banner instead of full remount */}
-      {newBookingsBanner && (
-        <button
-          onClick={() => { setNewBookingsBanner(false); window.location.reload(); }}
-          className="mt-3 w-full rounded-lg border border-gold/30 bg-gold/10 px-4 py-2 text-sm text-gold hover:bg-gold/20 transition-all text-center"
-        >
-          Появились новые записи — нажмите для обновления
-        </button>
-      )}
-
       {/* Search */}
       <div className="mt-3">
         <SearchBar
@@ -829,7 +814,7 @@ function BookingsPageInner() {
       ) : (
         <>
           {/* Dashboard — what needs attention */}
-          <DashboardSummary onNavigate={setTab} />
+          <DashboardSummary key={refreshKey} onNavigate={setTab} />
 
           {/* Tabs */}
           <div className="mt-5 flex border-b border-white/10">
@@ -851,8 +836,8 @@ function BookingsPageInner() {
             ))}
           </div>
 
-          {/* Tab content — no key={refreshKey}, banner handles new data */}
-          <div className="mt-4">
+          {/* Tab content — auto-refreshes when new bookings detected */}
+          <div className="mt-4" key={refreshKey}>
             {tab === "reminders" && <RemindersTab />}
             {tab === "classes" && <GroupBookingsTab filter={statusFilter} />}
             {tab === "master-classes" && <McRegistrationsTab filter={statusFilter} />}
@@ -864,7 +849,7 @@ function BookingsPageInner() {
       <AddBookingModal
         open={addOpen}
         onClose={() => setAddOpen(false)}
-        onAdded={() => setNewBookingsBanner(true)}
+        onAdded={() => setRefreshKey((k) => k + 1)}
       />
     </div>
   );