fix(platform): clarify vehicle service status labels

vehicle-data-platform/apps/web/src/pages/Vehicles.tsx

@@ -24,7 +24,7 @@ function vehicleServiceStatus(row: VehicleCoverageRow) {
     return { label: '车辆离线', color: 'red' as const };
   }
   if (row.onlineSourceCount < row.sourceCount) {
-    return { label: '部分来源离线', color: 'orange' as const };
+    return { label: '来源异常', color: 'orange' as const };
   }
   return { label: '服务正常', color: 'green' as const };
 }
@@ -170,7 +170,7 @@ export function Vehicles({
           </Form.Select>
           <Form.Select field="serviceStatus" label="服务状态" placeholder="全部" style={{ width: 150 }} data-testid="service-status-filter">
             <Select.Option value="healthy">服务正常</Select.Option>
-            <Select.Option value="degraded">部分来源离线</Select.Option>
+            <Select.Option value="degraded">来源异常</Select.Option>
             <Select.Option value="offline">车辆离线</Select.Option>
             <Select.Option value="no_data">暂无数据来源</Select.Option>
             <Select.Option value="identity_required">身份未绑定</Select.Option>