feat: reconcile ETC overview totals

src/server/routes/energy/index.ts

@@ -1020,6 +1020,7 @@ app.get('/etc/records', async (c) => {
   const [[summaryRows], [detailRows]] = await observeDataSource('etcDatabase', () => Promise.all([
     pool.query<RowDataPacket[]>(
       `SELECT COUNT(*) AS total,
+              COUNT(DISTINCT plate_number) AS vehicleCount,
               SUM(toll_amount) AS tollAmount,
               SUM(service_fee) AS serviceFee,
               SUM(total_amount) AS totalAmount
@@ -1058,6 +1059,7 @@ app.get('/etc/records', async (c) => {
     totalPages: Math.max(1, Math.ceil(total / limit)),
     filters: { startDate: startDate || null, endDate: endDate || null, search },
     summary: {
+      vehicleCount: Number(summary.vehicleCount) || 0,
       tollAmount: Math.round((Number(summary.tollAmount) || 0) * 100) / 100,
       serviceFee: Math.round((Number(summary.serviceFee) || 0) * 100) / 100,
       totalAmount: Math.round((Number(summary.totalAmount) || 0) * 100) / 100,