feat: 修复了插件需要外部Provider的问题；加上了一个简易的车控状态返回

lib/services/control_recognition_service.dart

@@ -4,6 +4,7 @@ import '../models/vehicle_cmd.dart';
 import '../models/vehicle_cmd_response.dart';
 import 'vehicle_state_service.dart';
 
+/// 车辆命令服务 - 负责与后端交互以获取和处理车辆控制命令
 class VehicleCommandService {
   // final VehicleStateService vehicleStateService = VehicleStateService();