fix: 实时监控显示优化

1. KPI 总里程不保留小数
2. 车辆卡片先展示部门再展示客户名称，客户名称不截断
3. 无部门时展示租赁状态（自营/租赁/挂靠等）

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

src/server/routes/mileage.ts

@@ -9,13 +9,16 @@ const VEHICLE_INFO_SQL = `SELECT
     truck.plate_number AS plate,
     cus.customer_name AS customer,
     dep.dep_name AS department,
-    u.user_name AS manager
+    u.user_name AS manager,
+    dic_status.dic_name AS rent_status
 FROM tab_truck truck
 LEFT JOIN tab_truck_status_info si ON si.truck_id = truck.id AND si.is_deleted = 0
 LEFT JOIN tab_contract c ON c.id = si.contract_id AND c.is_deleted = 0
 LEFT JOIN tab_customer cus ON cus.id = c.customer_id AND cus.is_deleted = 0
 LEFT JOIN tab_user u ON u.id = c.bd AND u.is_deleted = 0
 LEFT JOIN tab_department dep ON dep.id = u.dep_id AND dep.is_deleted = 0
+LEFT JOIN tab_dic dic_status ON dic_status.parent_code = 'dic_truck_rent_status'
+      AND dic_status.dic_code = truck.truck_rent_status AND dic_status.is_deleted = 0
 WHERE truck.is_deleted = 0 AND truck.is_operation = 1`;
 
 // ========== 实时监控缓存（每2分钟刷新） ==========
@@ -30,6 +33,7 @@ interface CachedVehicle {
   customer: string | null;
   department: string | null;
   manager: string | null;
+  rentStatus: string | null;
 }
 
 interface MonitoringCache {
@@ -95,6 +99,7 @@ async function refreshMonitoringCache() {
         customer: info?.customer || null,
         department: info?.department || null,
         manager: info?.manager || null,
+        rentStatus: info?.rent_status || null,
       };
     });