fix: restore SuperAdmin page to valid mock state

pages/SuperAdmin.tsx

@@ -1,16 +1,13 @@
 import React, { useState, useMemo } from 'react';
 import { 
-  Building2, Users, MessageSquare, Plus, Search, MoreHorizontal, 
-  Edit, Trash2, Shield, Calendar, ChevronDown, ChevronUp, ChevronsUpDown, X
+  Building2, Users, MessageSquare, Plus, Search, 
+  Edit, Trash2, ChevronDown, ChevronUp, ChevronsUpDown, X
 } from 'lucide-react';
-import { TENANTS, MOCK_ATTENDANCES, USERS } from '../constants';
+import { TENANTS } from '../constants';
 import { Tenant } from '../types';
 import { DateRangePicker } from '../components/DateRangePicker';
 import { KPICard } from '../components/KPICard';
 
-// Reusing KPICard but simplifying logic for this view if needed
-// We can use the existing KPICard component.
-
 export const SuperAdmin: React.FC = () => {
   const [dateRange, setDateRange] = useState({
     start: new Date(Date.now() - 30 * 24 * 60 * 60 * 1000),
@@ -28,7 +25,6 @@ export const SuperAdmin: React.FC = () => {
 
   // --- Metrics ---
   const totalTenants = tenants.length;
-  // Mock aggregation for demo
   const totalUsersGlobal = tenants.reduce((acc, t) => acc + (t.user_count || 0), 0);
   const totalAttendancesGlobal = tenants.reduce((acc, t) => acc + (t.attendance_count || 0), 0);