feat(mileage): add daily mileage columns to main export sheet

- '车辆汇总' sheet now includes per-day mileage columns for date ranges
- Daily columns shown as 'MM-DD里程(km)' between base info and summary cols
- Freeze pane fixed at 7 base columns for horizontal scrolling
- '每日明细' sheet retained as detailed backup
- Bump version to 1.1.9

package.json

@@ -1,7 +1,7 @@
 {
   "name": "ln-bi",
   "private": true,
-  "version": "1.1.8",
+  "version": "1.1.9",
   "type": "module",
   "scripts": {
     "dev": "concurrently -n server,client -c blue,green \"npm run dev:server\" \"npm run dev:client\"",

src/modules/mileage/xlsx-export.ts

@@ -8,9 +8,9 @@ interface ExportContext {
   sortBy: 'today' | 'total';
 }
 
-const HEADERS = [
+const BASE_HEADERS = [
   '状态', '车牌号', '客户', '业务部门', '项目', '租赁状态',
-  '运营区域', '区间里程(km)', '累计里程(km)',
+  '运营区域',
 ] as const;
 
 function statusLabel(v: MonitoringVehicle): string {
@@ -20,7 +20,6 @@ function statusLabel(v: MonitoringVehicle): string {
 
 function mileageCell(v: MonitoringVehicle, kind: 'today' | 'total'): string | number {
   if (kind === 'today') {
-    // 区间内未对接但有历史累计，视作区间 0；只有完全无数据才标「未对接」。
     if (!v.isDataSynced && v.totalKm == null) return '未对接';
     return Math.max(0, v.dailyKm || 0);
   }
@@ -31,24 +30,46 @@ export function exportMileageXlsx(vehicles: MonitoringVehicle[], ctx: ExportCont
   const start = ctx.startDate || ctx.date || '';
   const end = ctx.endDate || ctx.date || '';
   const isRange = !!start && !!end && start !== end;
+
+  const dayKeys = Array.from(
+    new Set(vehicles.flatMap(v => Object.keys(v.dailyMileage || {})))
+  ).sort();
+
+  // 车辆汇总 sheet：基础列 + 每日里程列 + 区间合计 + 累计里程
+  const dailyHeaders = dayKeys.map(day => `${day.slice(5)}里程(km)`);
+  const summaryHeaders = [
+    ...BASE_HEADERS,
+    ...(dayKeys.length > 0 ? dailyHeaders : []),
+    isRange ? '区间合计(km)' : '当日里程(km)',
+    '累计里程(km)',
+  ];
+
   const summaryData: (string | number)[][] = [
-    [...HEADERS],
-    ...vehicles.map(v => [
-      statusLabel(v),
-      v.plate,
-      v.customer || '',
-      v.department || '',
-      v.project || '',
-      v.rentStatus || '',
-      v.region || '',
-      mileageCell(v, 'today'),
-      mileageCell(v, 'total'),
-    ]),
+    summaryHeaders,
+    ...vehicles.map(v => {
+      const baseRow = [
+        statusLabel(v),
+        v.plate,
+        v.customer || '',
+        v.department || '',
+        v.project || '',
+        v.rentStatus || '',
+        v.region || '',
+      ];
+      const dailyCols = dayKeys.map(day => v.dailyMileage?.[day] ?? 0);
+      return [
+        ...baseRow,
+        ...dailyCols,
+        mileageCell(v, 'today'),
+        mileageCell(v, 'total'),
+      ];
+    }),
   ];
 
   const ws = XLSX.utils.aoa_to_sheet(summaryData);
 
-  ws['!cols'] = [
+  const numFixedCols = BASE_HEADERS.length;
+  const wsCols: { wch: number }[] = [
     { wch: 8 },   // 状态
     { wch: 12 },  // 车牌号
     { wch: 28 },  // 客户
@@ -56,21 +77,24 @@ export function exportMileageXlsx(vehicles: MonitoringVehicle[], ctx: ExportCont
     { wch: 16 },  // 项目
     { wch: 10 },  // 租赁状态
     { wch: 12 },  // 运营区域
-    { wch: 14 },  // 区间里程
-    { wch: 14 },  // 累计里程
   ];
+  for (let i = 0; i < dayKeys.length; i++) wsCols.push({ wch: 12 });
+  wsCols.push({ wch: 14 }); // 区间合计
+  wsCols.push({ wch: 14 }); // 累计里程
+  ws['!cols'] = wsCols;
 
-  ws['!freeze'] = { xSplit: 0, ySplit: 1 } as never;
+  // 冻结首行 + 固定列
+  ws['!freeze'] = { xSplit: numFixedCols, ySplit: 1 } as never;
 
   for (let r = 1; r < summaryData.length; r++) {
-    for (const c of [7, 8]) {
+    for (let c = numFixedCols; c < summaryHeaders.length; c++) {
       const ref = XLSX.utils.encode_cell({ r, c });
       if (ws[ref]?.t === 'n') ws[ref].z = '0.##########';
     }
   }
 
-  // 表头样式（在客户端 SheetJS 社区版仅基本样式生效）
-  for (let c = 0; c < HEADERS.length; c++) {
+  // 表头样式
+  for (let c = 0; c < summaryHeaders.length; c++) {
     const ref = XLSX.utils.encode_cell({ r: 0, c });
     if (ws[ref]) {
       (ws[ref] as { s?: unknown }).s = {
@@ -84,9 +108,7 @@ export function exportMileageXlsx(vehicles: MonitoringVehicle[], ctx: ExportCont
   const wb = XLSX.utils.book_new();
   XLSX.utils.book_append_sheet(wb, ws, '车辆汇总');
 
-  const dayKeys = Array.from(
-    new Set(vehicles.flatMap(v => Object.keys(v.dailyMileage || {})))
-  ).sort();
+  // 每日明细 sheet：保留原有格式
   if (dayKeys.length > 0) {
     const detailHeaders = [
       '车牌号', '客户', '业务部门', '项目', '租赁状态', '运营区域',