add default menu expand status for config

conf/app.php

@@ -67,6 +67,8 @@ $configs = array(
 
     'showQRImageInFooter' => true,          //在网页底部显示当前网址二维码
 
+    'defaultMenuStatusInPC' => 'closed',    //PC下左侧目录默认状态，可选值：opened, closed
+
     /*
     //视频皮肤配置
     'videoblog' => array(

themes/beauty/views/site/index.php

@@ -10,7 +10,7 @@ $supportedExts = array_merge($imgExts, $videoExts);
 $authConfig = FSC::$app['config']['password_auth'];
 
 $dir_ext_status = !empty($_COOKIE['dir_ext_status']) ? $_COOKIE['dir_ext_status'] : 'opened';
-$menu_ext_status = !empty($_COOKIE['menu_ext_status']) ? $_COOKIE['menu_ext_status'] : 'opened';
+$menu_ext_status = !empty($_COOKIE['menu_ext_status']) ? $_COOKIE['menu_ext_status'] : FSC::$app['config']['defaultMenuStatusInPC'];
 
 $menu_expand_icon_cls = $menu_ext_status == 'opened' ? '' : 'closed';
 $menu_expand_icon_url = $menu_ext_status == 'opened' ? 'arrow-left-circle.svg' : 'arrow-right-circle.svg';