fix(device): 解决装置在线注册时项目验证缺失问题

- 添加了项目存在性检查逻辑
- 当未找到装置绑定的项目时抛出业务异常
- 提供了重新绑定的错误提示信息

iot-access/access-boot/src/main/java/com/njcn/access/service/impl/CsDeviceServiceImpl.java

@@ -569,6 +569,10 @@ public class CsDeviceServiceImpl implements ICsDeviceService {
     @Transactional(rollbackFor = Exception.class)
     public String onlineRegister(String projectId,String nDid) {
         String result = "fail";
+        CsLedger csLedger = csLedgerService.getById(projectId);
+        if (csLedger == null) {
+            throw new BusinessException("未找到装置绑定的项目，请重新绑定");
+        }
         // 根据模板接入装置
         LogMessage logDto = new LogMessage();
         logDto.setUserIndex(RequestUtil.getUserNickname());