fix: clean orphaned permission tree nodes and enhance outbound search with material name/spec model

inventory-backend/app/services/permission_service.py

@@ -447,6 +447,18 @@ class PermissionService:
                 ('system_audit', '审计日志', '/system/audit', 'system_mgmt', 3),
             ]
 
+            # 第一步：清理根级别的冗余子菜单（这些本应是子节点，但可能之前被错误地创建为根节点）
+            child_codes = [m[0] for m in menu_defs if m[3] is not None]  # 所有子菜单的code
+            orphaned_menus = SysMenu.query.filter(
+                SysMenu.code.in_(child_codes),
+                (SysMenu.parent_id == 0) | (SysMenu.parent_id.is_(None))
+            ).all()
+            for menu in orphaned_menus:
+                print(f"🗑️ 清理根级别冗余菜单: {menu.code} ({menu.name})")
+                # 删除关联的权限
+                SysRolePermission.query.filter_by(target_code=menu.code).delete()
+                db.session.delete(menu)
+
             # 创建或更新菜单
             menu_map = {}  # code -> menu obj