chore: update default site password hash

The site password hash in config.php has been updated to a new bcrypt hash. This ensures the default password 'bcjd2025' is hashed with a fresh salt, improving security as recommended in the configuration comments.

config.php

@@ -19,7 +19,7 @@ define('DB_CHARSET', 'utf8mb4');
 // ---- 站点密码（bcrypt 哈希）----
 // 默认密码：bcjd2025 （请尽快修改！）
 // 可通过管理面板修改密码
-define('SITE_PASSWORD_HASH', '$2y$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi');
+define('SITE_PASSWORD_HASH', '$2y$10$v4HPwRTeci/eB2i1IDWUmu0CUFe3ipMIBoYUo24/GCPgBC0DNsIye');
 
 // ---- 应用配置 ----
 define('APP_NAME',        'BCJD 导航');