fix(mileage): skip missing daily mileage in interval totals

src/modules/mileage/xlsx-export.ts

@@ -1,3 +1,4 @@
+import { monitoringMileageValue } from './mileage-display';
 import * as XLSX from 'xlsx';
 import type { MonitoringVehicle } from './types';
 
@@ -27,8 +28,7 @@ function statusLabel(v: MonitoringVehicle): string {
 
 function mileageCell(v: MonitoringVehicle, kind: 'today' | 'total'): string | number {
   if (kind === 'today') {
-    if (!v.isDataSynced && v.totalKm == null) return '未对接';
-    return Math.max(0, v.dailyKm || 0);
+    return monitoringMileageValue(v);
   }
   return v.totalKm != null ? v.totalKm : '未对接';
 }
@@ -64,7 +64,7 @@ export function exportMileageXlsx(vehicles: MonitoringVehicle[], ctx: ExportCont
         v.rentStatus || '',
         v.region || '',
       ];
-      const dailyCols = dayKeys.map(day => v.dailyMileage?.[day] ?? 0);
+      const dailyCols = dayKeys.map(day => v.dailyMileage?.[day] ?? '—');
       return [
         ...baseRow,
         ...dailyCols,
@@ -135,8 +135,8 @@ export function exportMileageXlsx(vehicles: MonitoringVehicle[], ctx: ExportCont
         v.project || '',
         v.rentStatus || '',
         v.region || '',
-        ...dayKeys.map(day => v.dailyMileage?.[day] || 0),
-        Math.max(0, v.dailyKm || 0),
+        ...dayKeys.map(day => v.dailyMileage?.[day] ?? '—'),
+        mileageCell(v, 'today'),
         v.totalKm != null ? v.totalKm : '',
       ]),
     ];