feat(bid): add close date order management feature

新增结单时间管理功能，包括：
1. 新增结单统计接口与页面，展示待结单、今日/本周结单量和平均处理周期
2. 支持按单号、订单状态搜索查询结单列表
3. 支持批量设置收货日期并批量确认结单
4. 优化现有订单列表的表格列宽与布局

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

@@ -78,6 +78,16 @@
     WHERE delivery_status = 'transit'
   </select>
 
+  <select id="selectCloseDateStats" resultType="java.util.Map">
+    SELECT
+      COUNT(*) AS pendingClose,
+      SUM(CASE WHEN actual_close_date = CURDATE() THEN 1 ELSE 0 END) AS todayClosed,
+      SUM(CASE WHEN YEARWEEK(actual_close_date, 1) = YEARWEEK(CURDATE(), 1) THEN 1 ELSE 0 END) AS weekClosed,
+      ROUND(AVG(DATEDIFF(actual_close_date, delivery_date)), 1) AS avgCycleDays
+    FROM biz_delivery_order
+    WHERE delivery_status = 'history'
+  </select>
+
   <select id="selectHistoryStats" resultType="java.util.Map">
     SELECT
       COUNT(*) AS totalHistory,