fix(手表设备): 手表绑定时校验只能绑定本单位人员

新增单位编码前6位匹配校验，禁止跨单位绑定手表；
同时将"该设备已绑定该员工"改为"该设备已被绑定"

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

health-watch/health-watch-biz/src/main/java/com/renkang/watch/service/impl/WatchDeviceServiceImpl.java

@@ -293,8 +293,18 @@ public class WatchDeviceServiceImpl extends ServiceImpl<WatchDeviceMapper, Watch
         if (watchDevice == null) {
             return Result.error("该监测工具不存在");
         }
+
+        // 新增手表只能绑定给本单位的人
+        LoginUser userById = sysBaseAPI.getUserById(dto.getBindUserId());
+
+        if (userById.getOrgCode() == null || dto.getOrgCode() == null ||
+                userById.getOrgCode().length() < 6 || dto.getOrgCode().length() < 6 ||
+                !userById.getOrgCode().substring(0, 6).equals(dto.getOrgCode().substring(0, 6))) {
+            return Result.error("手表只能绑定给本单位人员");
+        }
+
         if (isDeviceAlreadyBound(watchDevice, dto)) {
-            return Result.error("该设备已绑定该员工");
+            return Result.error("该设备已被绑定");
         }
         // 查询员工是否有绑定
         List<WatchDevice> deviceByUserIdList = getDeviceByUserId(dto.getBindUserId());
@@ -322,7 +332,6 @@ public class WatchDeviceServiceImpl extends ServiceImpl<WatchDeviceMapper, Watch
             // 初始化开关数据
             unbindUserAndInitDeviceSwitch(dto);
         }
-        LoginUser userById = sysBaseAPI.getUserById(dto.getBindUserId());
         // 此处修改 只有是职工的是才赋值单位信息
         if (dto.getIsEmployee()) {
             SysDepart inDepart = sysCache.getDepartByOrgCode(userById.getOrgCode());