fix: 里程范围筛选接入后端

- 后端支持 mileageMin/mileageMax 查询参数
- 前端点击"完成筛选"时将里程范围提交到后端
- "重置所有"同时清除已应用的里程范围

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

src/server/routes/mileage.ts

@@ -154,6 +154,8 @@ app.get('/monitoring', (c) => {
   const customer = c.req.query('customer') || '';
   const project = c.req.query('project') || '';
   const entity = c.req.query('entity') || '';
+  const mileageMin = c.req.query('mileageMin') || '';
+  const mileageMax = c.req.query('mileageMax') || '';
 
   let vehicles = monitoringCache.vehicles;
 
@@ -170,6 +172,8 @@ app.get('/monitoring', (c) => {
   if (customer) vehicles = vehicles.filter(v => v.customer === customer);
   if (project) vehicles = vehicles.filter(v => v.project === project);
   if (entity) vehicles = vehicles.filter(v => v.entity === entity);
+  if (mileageMin) vehicles = vehicles.filter(v => v.dailyKm >= Number(mileageMin));
+  if (mileageMax) vehicles = vehicles.filter(v => v.dailyKm <= Number(mileageMax));
 
   const total = vehicles.length;