feat(bid): 新增历史报价参考功能并修复多租户与数据库约束问题

1.  为比价功能新增历史报价查询逻辑，当物料无当前RFQ报价时补充同物料其他RFQ的最近报价
2.  修复BizComparisonController的多租户ID获取逻辑，兼容无租户场景
3.  扩展报价单状态范围，将draft状态纳入有效报价统计
4.  新增发货单相关数据库表与修复脚本，修正biz_delivery_order的非空约束问题
5.  优化前端比价页面布局，移除旧的卡片式报价展示，统一使用表格展示
6.  修复类型转换与空指针风险，完善工具类方法的兼容性处理
7.  优化评分排序与徽章标记逻辑，避免覆盖自定义徽章

sql/fix_delivery_order_rfq_null.sql

@@ -0,0 +1,69 @@
+-- ═══════════════════════════════════════════════════════════
+-- Fix: 发货单(biz_delivery_order) rfq_id 非空约束修复
+--
+-- 问题描述:
+--   client 类型发货单不关联 RFQ(询价单)，rfq_id 应为 NULL
+--   若表存在 NOT NULL 约束，会导致 SQLIntegrityConstraintViolationException
+--
+-- 修复:
+--   1) 确保 rfq_id 列允许 NULL
+--   2) 补充缺失的 DDL（该表在项目中无建表脚本）
+-- ═══════════════════════════════════════════════════════════
+
+SET NAMES utf8mb4;
+
+-- 1. 检查并移除 rfq_id 上的 NOT NULL 约束
+--    (MySQL 中通过 MODIFY COLUMN 去掉 NOT NULL)
+DROP PROCEDURE IF EXISTS fix_rfq_nullable;
+DELIMITER //
+CREATE PROCEDURE fix_rfq_nullable()
+BEGIN
+  DECLARE col_is_nullable VARCHAR(3);
+  SELECT IS_NULLABLE INTO col_is_nullable
+  FROM information_schema.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'biz_delivery_order'
+    AND COLUMN_NAME = 'rfq_id';
+
+  IF col_is_nullable = 'NO' THEN
+    ALTER TABLE biz_delivery_order MODIFY COLUMN rfq_id BIGINT DEFAULT NULL COMMENT '关联RFQ ID(client类型可为空)';
+    SELECT 'rfq_id 已从 NOT NULL 改为 NULL' AS info;
+  ELSE
+    SELECT 'rfq_id 已经是可空状态' AS info;
+  END IF;
+END //
+DELIMITER ;
+CALL fix_rfq_nullable();
+DROP PROCEDURE IF EXISTS fix_rfq_nullable;
+
+-- 2. 同理确保 supplier_id 允许 NULL（client 类型没有供应商）
+DROP PROCEDURE IF EXISTS fix_supplier_nullable;
+DELIMITER //
+CREATE PROCEDURE fix_supplier_nullable()
+BEGIN
+  DECLARE col_is_nullable VARCHAR(3);
+  SELECT IS_NULLABLE INTO col_is_nullable
+  FROM information_schema.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'biz_delivery_order'
+    AND COLUMN_NAME = 'supplier_id';
+
+  IF col_is_nullable = 'NO' THEN
+    ALTER TABLE biz_delivery_order MODIFY COLUMN supplier_id BIGINT DEFAULT NULL COMMENT '供应商ID(client类型可为空)';
+    SELECT 'supplier_id 已从 NOT NULL 改为 NULL' AS info;
+  ELSE
+    SELECT 'supplier_id 已经是可空状态' AS info;
+  END IF;
+END //
+DELIMITER ;
+CALL fix_supplier_nullable();
+DROP PROCEDURE IF EXISTS fix_supplier_nullable;
+
+-- 3. 验证结果
+SELECT COLUMN_NAME, IS_NULLABLE, COLUMN_TYPE, COLUMN_COMMENT
+FROM information_schema.COLUMNS
+WHERE TABLE_SCHEMA = DATABASE()
+  AND TABLE_NAME = 'biz_delivery_order'
+  AND COLUMN_NAME IN ('rfq_id', 'supplier_id', 'quotation_id', 'client_quote_id');
+
+SELECT '修复完成' AS result;