Fix Bookings API payload extraction to handle data wrapper

src/pages/bookings/Bookings.jsx

@@ -43,7 +43,8 @@ const getHeaders = () => {
 async function apiFetchBookings() {
   const res = await fetch(`${API_BASE}/admin/bookings`, { headers: getHeaders() });
   if (!res.ok) throw new Error('Failed to fetch bookings');
-  return res.json();
+  const json = await res.json();
+  return Array.isArray(json) ? json : (json.data || []);
 }
 
 async function apiFetchSurveys() {