feat: 支持查询指定日期里程+删除搜索关键词和车牌号筛选

- 后端支持 date 参数，指定日期时实时查询数据库（不用缓存）
- 同时查询前一天数据计算环比
- 高级筛选添加"查询日期"日期选择器
- 删除高级筛选中的"搜索关键词"和"车牌号"（已有快捷筛选）
- 筛选标签支持显示日期条件

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/server/routes/mileage.ts

@@ -152,11 +152,43 @@ async function refreshMonitoringCache() {
 refreshMonitoringCache();
 setInterval(refreshMonitoringCache, 2 * 60 * 1000);
 
-// GET /monitoring — 从缓存取数据，支持筛选/排序/分页
-app.get('/monitoring', (c) => {
-  if (!monitoringCache) {
-    return c.json({ vehicles: [], stats: { totalToday: 0, totalAll: 0, vehicleCount: 0, yesterdayTotal: 0 }, filters: { departments: [], customers: [], plates: [], projects: [], entities: [] }, total: 0, page: 1, totalPages: 1, updatedAt: new Date().toISOString() });
+// 查询指定日期的里程数据（非缓存）
+async function queryDateMileage(dateStr: string): Promise<{ vehicles: CachedVehicle[]; yesterdayTotal: number }> {
+  const [mileageRows] = await mileagePool.execute(
+    `SELECT plate, vin, daily_km, total_km, source FROM v_vehicle_daily_stats WHERE stat_date = ?`,
+    [dateStr]
+  ) as any;
+  const [yesterdayRows] = await mileagePool.execute(
+    `SELECT SUM(daily_km) as total FROM v_vehicle_daily_stats WHERE stat_date = DATE_SUB(?, INTERVAL 1 DAY)`,
+    [dateStr]
+  ) as any;
+  const [infoRows] = await pool.execute(VEHICLE_INFO_SQL) as any;
+  const infoMap = new Map<string, any>();
+  for (const row of infoRows) infoMap.set(row.plate, row);
+  const mileageMap = new Map<string, any>();
+  for (const row of mileageRows) {
+    const existing = mileageMap.get(row.plate);
+    if (!existing || Number(row.daily_km) > Number(existing.daily_km)) mileageMap.set(row.plate, row);
   }
+  const vehicles: CachedVehicle[] = Array.from(mileageMap.values()).map((m: any) => {
+    const info = infoMap.get(m.plate);
+    const dailyKm = Number(m.daily_km) || 0;
+    const source = m.source || 'NONE';
+    return {
+      plate: m.plate, vin: m.vin, dailyKm,
+      totalKm: m.total_km !== null ? Number(m.total_km) : null,
+      source, isOnline: source !== 'NONE' && dailyKm > 0, isDataSynced: source !== 'NONE',
+      customer: info?.customer || null, department: info?.department || null,
+      manager: info?.manager || null, rentStatus: info?.rent_status || null,
+      entity: info?.entity || null, project: info?.project || null,
+    };
+  });
+  return { vehicles, yesterdayTotal: Number(yesterdayRows[0]?.total) || 0 };
+}
+
+// GET /monitoring — 从缓存取数据（或指定日期实时查询），支持筛选/排序/分页
+app.get('/monitoring', async (c) => {
+  const emptyResponse = { vehicles: [], stats: { totalToday: 0, totalAll: 0, vehicleCount: 0, yesterdayTotal: 0 }, filters: { departments: [], customers: [], plates: [], projects: [], entities: [] }, total: 0, page: 1, totalPages: 1, updatedAt: new Date().toISOString() };
 
   const sortBy = c.req.query('sortBy') || 'today';
   const sortOrder = c.req.query('sortOrder') || 'desc';
@@ -170,8 +202,43 @@ app.get('/monitoring', (c) => {
   const mileageMin = c.req.query('mileageMin') || '';
   const mileageMax = c.req.query('mileageMax') || '';
   const plate = c.req.query('plate') || '';
+  const date = c.req.query('date') || '';
 
-  let vehicles = monitoringCache.vehicles;
+  let allVehicles: CachedVehicle[];
+  let yesterdayTotal: number;
+  let filters: MonitoringCache['filters'];
+
+  if (date) {
+    // 指定日期：实时查询
+    try {
+      const result = await queryDateMileage(date);
+      allVehicles = result.vehicles;
+      yesterdayTotal = result.yesterdayTotal;
+      // 从查询结果提取筛选选项
+      const deptOrder = ['一', '二', '三', '四', '五', '六', '七', '八', '九', '十'];
+      filters = {
+        departments: (Array.from(new Set(allVehicles.map(v => v.department).filter(Boolean))) as string[]).sort((a, b) => {
+          const ai = deptOrder.findIndex(d => a.includes(d)); const bi = deptOrder.findIndex(d => b.includes(d));
+          return (ai === -1 ? 99 : ai) - (bi === -1 ? 99 : bi);
+        }),
+        customers: Array.from(new Set(allVehicles.map(v => v.customer).filter(Boolean))) as string[],
+        plates: allVehicles.map(v => v.plate),
+        projects: Array.from(new Set(allVehicles.map(v => v.project).filter(Boolean))) as string[],
+        entities: Array.from(new Set(allVehicles.map(v => v.entity).filter(Boolean))) as string[],
+      };
+    } catch (e) {
+      console.error('monitoring date query error:', e);
+      return c.json(emptyResponse, 500);
+    }
+  } else {
+    // 默认：从缓存取
+    if (!monitoringCache) return c.json(emptyResponse);
+    allVehicles = monitoringCache.vehicles;
+    yesterdayTotal = monitoringCache.stats.yesterdayTotal;
+    filters = monitoringCache.filters;
+  }
+
+  let vehicles = allVehicles;
 
   // 筛选
   if (search) {
@@ -197,7 +264,7 @@ app.get('/monitoring', (c) => {
     totalToday: vehicles.reduce((sum, v) => sum + v.dailyKm, 0),
     totalAll: vehicles.reduce((sum, v) => sum + (v.totalKm || 0), 0),
     vehicleCount: vehicles.length,
-    yesterdayTotal: monitoringCache.stats.yesterdayTotal,
+    yesterdayTotal,
   };
 
   // 排序
@@ -214,11 +281,11 @@ app.get('/monitoring', (c) => {
   return c.json({
     vehicles: paged,
     stats: filteredStats,
-    filters: monitoringCache.filters,
+    filters,
     total,
     page,
     totalPages: Math.ceil(total / limit),
-    updatedAt: monitoringCache.updatedAt,
+    updatedAt: date || monitoringCache?.updatedAt || new Date().toISOString(),
   });
 });