ae1ff5ffd8fdb025023cb990283624756bebed7c
- core.php: 新增smtpSendEmail/queryLoginIpLocation/getBaseUrl/sendLocationAlertEmail - security_alert.php: 接收Java通知比对IP归属并发送提醒邮件(含冻结/改密链接) - freeze.php: 验证freeze_token冻结账号并写freeze指令 - sync.php: 冻结账号禁止Web登录; smtpSendEmail上移至core.php统一复用 - reset_password.php: 改密成功后解冻(清frozen+写unfreeze)