迁移：将DB变更记录SQL文件移动到sql目录下

sql/迁移记录-DB变更记录/find_and_fix_duplicate_path.sql

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+-- =====================================================
+-- 查找并修复 sys_menu 表中重复的 path 记录
+-- PostgreSQL 版本
+-- =====================================================
+
+-- 第一步：查看是否有重复的 path
+SELECT
+    path,
+    COUNT(*) as count,
+    STRING_AGG(CAST(menu_id AS TEXT), ', ') as menu_ids,
+    STRING_AGG(menu_name, ', ') as menu_names
+FROM sys_menu
+GROUP BY path
+HAVING COUNT(*) > 1;
+
+-- 第二步：查看具体重复记录的详细信息
+-- (替换下面的重复路径值)
+-- SELECT * FROM sys_menu WHERE path = 'your_duplicate_path_value' ORDER BY menu_id;
+
+-- 第三步：自动删除重复的 path 记录（保留 menu_id 最小的）
+DELETE FROM sys_menu
+WHERE menu_id IN (
+    SELECT menu_id FROM (
+        SELECT menu_id,
+               ROW_NUMBER() OVER (PARTITION BY path ORDER BY menu_id) as rn
+        FROM sys_menu
+    ) t
+    WHERE rn > 1
+);
+
+-- 第四步：验证是否还有重复的 path
+SELECT
+    path,
+    COUNT(*) as count
+FROM sys_menu
+GROUP BY path
+HAVING COUNT(*) > 1;