diff --git a/backend/database/migrations/002_merge_old_data.sql b/backend/database/migrations/002_merge_old_data.sql
deleted file mode 100644
index 9989efe..0000000
--- a/backend/database/migrations/002_merge_old_data.sql
+++ /dev/null
@@ -1,134 +0,0 @@
--- 合并旧项目数据到新项目
--- 执行前请确保已备份数据库
-
--- 1. 更新 companies 表，添加飞书相关字段
-ALTER TABLE `companies`
-ADD COLUMN `abbr` varchar(50) NOT NULL DEFAULT '' COMMENT '公司缩写' AFTER `name`,
-ADD COLUMN `tenant_key` varchar(36) NOT NULL DEFAULT '' COMMENT '飞书企业标识' AFTER `abbr`,
-ADD COLUMN `sort` int(11) NOT NULL DEFAULT 0 COMMENT '排序' AFTER `tenant_key`,
-ADD COLUMN `feishu_enabled` tinyint(1) NOT NULL DEFAULT 0 COMMENT '是否启用飞书';
-
--- 2. 更新 users 表，添加飞书相关字段
-ALTER TABLE `users`
-ADD COLUMN `sn` varchar(36) NOT NULL DEFAULT '' COMMENT '用户编号' AFTER `id`,
-ADD COLUMN `report_to` bigint(20) UNSIGNED NULL DEFAULT 0 COMMENT '上级用户ID' AFTER `sn`,
-ADD COLUMN `avatar` varchar(255) NULL DEFAULT NULL COMMENT '头像' AFTER `phone`,
-ADD COLUMN `sex` tinyint(2) NULL DEFAULT NULL COMMENT '性别：1:男，2:女' AFTER `avatar`,
-ADD COLUMN `status` tinyint(1) NOT NULL DEFAULT 1 COMMENT '状态' AFTER `sex`,
-ADD COLUMN `user_type` tinyint(2) NOT NULL DEFAULT 1 COMMENT '用户类型 1内部2外部' AFTER `status`,
-ADD COLUMN `union_id` varchar(60) NULL DEFAULT NULL COMMENT 'ISV的唯一标识' AFTER `user_type`,
-ADD COLUMN `feishu_user_id` varchar(60) NULL DEFAULT NULL COMMENT '飞书user_id' AFTER `union_id`,
-ADD COLUMN `feishu_open_id` varchar(60) NULL DEFAULT NULL COMMENT '飞书open_id' AFTER `feishu_user_id`,
-ADD COLUMN `tenant_key` varchar(60) NULL DEFAULT NULL COMMENT '当前企业标识' AFTER `feishu_open_id`,
-ADD COLUMN `position` varchar(128) NULL DEFAULT NULL COMMENT '职位' AFTER `tenant_key`,
-ADD COLUMN `sign_img` varchar(255) NULL DEFAULT NULL COMMENT '签名图片' AFTER `position`;
-
--- 3. 创建公司飞书应用配置表
-CREATE TABLE IF NOT EXISTS `company_feishu_apps` (
-  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT 'ID',
-  `company_id` int(11) NOT NULL DEFAULT 0 COMMENT '公司ID',
-  `system_id` int(11) NOT NULL DEFAULT 0 COMMENT '系统ID：1=X-Server, 2=工单, 3=CRM_PC',
-  `name` varchar(90) NOT NULL DEFAULT '' COMMENT '应用名称',
-  `tenant_key` varchar(36) NOT NULL DEFAULT '' COMMENT '企业标识',
-  `app_id` varchar(60) NOT NULL DEFAULT '' COMMENT '飞书应用ID',
-  `app_secret` varchar(150) NOT NULL DEFAULT '' COMMENT '飞书应用密钥',
-  `encrypt_key` varchar(60) NULL DEFAULT NULL COMMENT '事件加密密钥',
-  `verification_token` varchar(60) NULL DEFAULT NULL COMMENT '事件验证令牌',
-  `base_uri` varchar(255) NOT NULL DEFAULT 'https://open.feishu.cn/open-apis/' COMMENT '飞书API基础地址',
-  `callback_url` varchar(255) NULL DEFAULT NULL COMMENT 'PC端回调地址',
-  `mobile_callback_url` varchar(255) NULL DEFAULT NULL COMMENT '移动端回调地址',
-  `scopes` text NULL COMMENT '授权范围',
-  `state` varchar(255) NULL DEFAULT NULL COMMENT '携带参数',
-  `sort` int(11) NOT NULL DEFAULT 0 COMMENT '排序',
-  `status` tinyint(1) NOT NULL DEFAULT 1 COMMENT '状态：1启用，0禁用',
-  `created_at` int(11) NOT NULL DEFAULT 0 COMMENT '创建时间',
-  `updated_at` int(11) NOT NULL DEFAULT 0 COMMENT '更新时间',
-  PRIMARY KEY (`id`) USING BTREE,
-  KEY `idx_company_id` (`company_id`) USING BTREE,
-  KEY `idx_system_id` (`system_id`) USING BTREE
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='公司飞书应用配置';
-
--- 4. 创建用户编号池表
-CREATE TABLE IF NOT EXISTS `user_sn_pool` (
-  `sn` int(11) UNSIGNED NOT NULL DEFAULT 0 COMMENT '用户编号',
-  `user_id` bigint(20) UNSIGNED NULL DEFAULT NULL COMMENT '分配的用户ID',
-  `status` tinyint(1) NOT NULL DEFAULT 0 COMMENT '状态：0未分配，1已分配',
-  `created_at` int(11) NOT NULL DEFAULT 0 COMMENT '创建时间',
-  PRIMARY KEY (`sn`) USING BTREE,
-  KEY `idx_user_id` (`user_id`) USING BTREE
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户编号池';
-
--- 5. 插入初始编号池数据（从100000到199999）
-INSERT IGNORE INTO `user_sn_pool` (`sn`, `status`, `created_at`)
-SELECT
-    100000 + n.n AS sn,
-    0 AS status,
-    UNIX_TIMESTAMP() AS created_at
-FROM (
-    SELECT 0 AS n UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION
-    SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9
-) t
-CROSS JOIN (
-    SELECT 0 AS n UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION
-    SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9
-) t1
-CROSS JOIN (
-    SELECT 0 AS n UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4
-) t2;
-
--- 6. 创建迁移数据临时表（用于从旧数据迁移）
-CREATE TABLE IF NOT EXISTS `_migration_users` (
-  `id` bigint(20) UNSIGNED NOT NULL,
-  `sn` varchar(36) NOT NULL DEFAULT '',
-  `report_to` bigint(20) UNSIGNED NULL DEFAULT 0,
-  `name` varchar(60) NOT NULL DEFAULT '',
-  `avatar` varchar(255) NULL DEFAULT NULL,
-  `sex` tinyint(2) NULL DEFAULT NULL,
-  `password` varchar(255) NOT NULL DEFAULT '',
-  `phone` varchar(22) NOT NULL DEFAULT '',
-  `email` varchar(90) NOT NULL DEFAULT '',
-  `corp_id` int(11) NOT NULL DEFAULT 0,
-  `status` tinyint(1) NOT NULL DEFAULT 1,
-  `user_type` tinyint(2) NOT NULL DEFAULT 1,
-  `union_id` varchar(60) NULL DEFAULT NULL,
-  `user_id` varchar(60) NULL DEFAULT NULL,
-  `open_id` varchar(60) NULL DEFAULT NULL,
-  `tenant_key` varchar(60) NULL DEFAULT NULL,
-  `position` varchar(128) NULL DEFAULT NULL,
-  `sign_img` varchar(255) NULL DEFAULT NULL,
-  `created_at` int(11) NOT NULL DEFAULT 0,
-  `updated_at` int(11) NOT NULL DEFAULT 0,
-  PRIMARY KEY (`id`) USING BTREE
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
-
-CREATE TABLE IF NOT EXISTS `_migration_corp` (
-  `id` int(11) UNSIGNED NOT NULL,
-  `name` varchar(255) NOT NULL DEFAULT '',
-  `abbr` enum('hesu','xinyouhe','paika','simate','mbaf') NOT NULL DEFAULT 'hesu',
-  `tenant_key` varchar(36) NOT NULL DEFAULT '',
-  `sort` int(11) NOT NULL DEFAULT 0,
-  `status` tinyint(1) NOT NULL DEFAULT 1,
-  `created_at` int(11) NOT NULL DEFAULT 0,
-  `updated_at` int(11) NOT NULL DEFAULT 0,
-  PRIMARY KEY (`id`) USING BTREE
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
-
-CREATE TABLE IF NOT EXISTS `_migration_corp_feishu_app` (
-  `id` int(11) UNSIGNED NOT NULL,
-  `corp_id` int(11) NOT NULL DEFAULT 0,
-  `system_id` int(11) NOT NULL DEFAULT 0,
-  `name` varchar(90) NOT NULL DEFAULT '',
-  `tenant_key` varchar(36) NOT NULL DEFAULT '',
-  `app_id` varchar(60) NOT NULL DEFAULT '',
-  `app_secret` varchar(150) NOT NULL DEFAULT '',
-  `base_uri` varchar(255) NOT NULL DEFAULT '',
-  `r_url` varchar(255) NULL DEFAULT NULL,
-  `m_url` varchar(255) NULL DEFAULT '',
-  `scopes` text NULL,
-  `state` varchar(255) NULL DEFAULT NULL,
-  `sort` int(11) NOT NULL DEFAULT 0,
-  `status` tinyint(1) NOT NULL DEFAULT 1,
-  `created_at` int(11) NOT NULL DEFAULT 0,
-  `updated_at` int(11) NOT NULL DEFAULT 0,
-  PRIMARY KEY (`id`) USING BTREE
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;