feat(imLoginFailureLog): 用户登录密码错误次数锁定与解锁能力（管理端）

- 安全策略登录限频由 JSON 文本改为结构化表单（次数/锁定分钟/窗口分钟），编辑校验同步扩展
- 失败日志新增解锁入口：/imLoginFailureLog/unlock 经 internal 通道调用 im-server 释放锁定
- 失败日志模型补充 accountHash 字段，解锁按钮按 risk_action=account_locked 展示
- 租户业务库初始化模板补充 im_login_lockouts 等表；新增解锁按钮菜单权限 SQL

docs/im/IM-登录失败锁定菜单权限.sql

@@ -0,0 +1,11 @@
+-- ----------------------------------------------------------------
+-- 登录失败锁定功能：登录失败日志页新增"解锁"按钮权限点
+-- 依赖：im_adfahi_batch2_menu.sql（imLoginFailureLogIndex 菜单已存在）
+-- ----------------------------------------------------------------
+SET @now := NOW();
+SET @imRootId := (SELECT `id` FROM `hg_admin_menu` WHERE `name` = 'imManager' LIMIT 1);
+SET @loginFailureId := (SELECT `id` FROM `hg_admin_menu` WHERE `name` = 'imLoginFailureLogIndex' LIMIT 1);
+
+INSERT INTO `hg_admin_menu` (`id`,`pid`,`title`,`name`,`path`,`icon`,`type`,`redirect`,`permissions`,`permission_name`,`component`,`always_show`,`active_menu`,`is_root`,`is_frame`,`frame_src`,`keep_alive`,`hidden`,`affix`,`level`,`tree`,`sort`,`remark`,`status`,`created_at`,`updated_at`)
+SELECT NULL,@loginFailureId,'解锁登录锁定','imLoginFailureLogUnlock','','3','','','/imLoginFailureLog/unlock','','','1','','0','0','','0','0','0','3',CONCAT('tr_',@imRootId,' tr_',@loginFailureId,' '),50,'','1',@now,@now
+WHERE @loginFailureId IS NOT NULL AND NOT EXISTS (SELECT 1 FROM `hg_admin_menu` WHERE `name` = 'imLoginFailureLogUnlock');