Completely fix tradeCattle folder

tradeCattle/database_migration_add_id_card_field.sql

@@ -0,0 +1,27 @@
+-- =============================================
+-- 数据库迁移脚本：为 member_driver 表添加 id_card 字段
+-- 用途：存储司机身份证前后面照片地址
+-- 创建时间：2025-10-20
+-- =============================================
+
+-- 检查字段是否已存在，如果不存在则添加
+SET @sql = (
+    SELECT IF(
+        (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS 
+         WHERE TABLE_SCHEMA = DATABASE() 
+           AND TABLE_NAME = 'member_driver' 
+           AND COLUMN_NAME = 'id_card') = 0,
+        'ALTER TABLE member_driver ADD COLUMN id_card TEXT COMMENT ''身份证前后面照片地址（多个URL用逗号分隔）'' AFTER car_img;',
+        'SELECT ''字段 id_card 已存在，无需添加'' AS message;'
+    )
+);
+
+PREPARE stmt FROM @sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+-- 显示表结构确认字段已添加
+DESCRIBE member_driver;
+
+-- 显示添加结果
+SELECT 'id_card 字段添加完成' AS result;