const XLSX = require('xlsx');
const workbook = XLSX.readFile('backupDB_20260602.xlsx');
console.log('Sheet Names:', workbook.SheetNames);
if (workbook.SheetNames.includes('system_users')) {
  const sheet = workbook.Sheets['system_users'];
  const data = XLSX.utils.sheet_to_json(sheet);
  console.log('system_users found! Count:', data.length);
  console.log('Sample:', data.slice(0, 2));
} else {
  console.log('system_users sheet not found in backupDB_20260602.xlsx');
}