修改初始化脚本，增加user表唯一索引

src/main/resources/script/init.sql

@@ -82,7 +82,8 @@ CREATE TABLE `user`
     `create_time`   bigint(20)          NOT NULL,
     `update_time`   bigint(20)          NOT NULL,
     PRIMARY KEY (`id`),
-    UNIQUE KEY `login_name` (`login_name`)
+    UNIQUE KEY `login_name` (`login_name`),
+    UNIQUE KEY `export_secret` (`export_secret`)
 ) ENGINE = InnoDB
   DEFAULT CHARSET = utf8mb4;