feat(bid): add in-transit order management feature

实现了在途订单的统计查询、列表展示以及相关的订单操作功能，包括收货完成、延期、撤回等，同时新增了对应的后台接口、Mapper以及路由页面。

ruoyi-system/src/main/resources/mapper/bid/BizDeliveryOrderMapper.xml

@@ -69,6 +69,15 @@
     WHERE do_id=#{doId}
   </update>
 
+  <select id="selectTransitStats" resultType="java.util.Map">
+    SELECT
+      COUNT(*) AS totalTransit,
+      SUM(CASE WHEN DATEDIFF(delivery_date, CURDATE()) BETWEEN 0 AND 3 THEN 1 ELSE 0 END) AS expiringSoon,
+      SUM(CASE WHEN DATEDIFF(delivery_date, CURDATE()) &lt; 0 THEN 1 ELSE 0 END) AS overdue
+    FROM biz_delivery_order
+    WHERE delivery_status = 'transit'
+  </select>
+
   <delete id="deleteBizDeliveryOrderById">DELETE FROM biz_delivery_order WHERE do_id=#{id}</delete>
 
   <delete id="deleteBizDeliveryOrderByIds">