修复了一些问题

src/Settings/Integration.php

@@ -334,7 +334,11 @@ class Integration {
         return !empty(Settings::get_value('message_s', true));
     }
 
-    /** 通知基础设置（basic group） */
+    /**
+     * 通知基础设置（basic group）
+     *
+     * @return array{enabled:bool,slug:string,icon_show:array<int,string>,paginate_type:string,user_set:bool}
+     */
     public static function notification_settings(): array {
         $settings = Settings::get_all();
         $slug = sanitize_key((string) ($settings['msg_center_rewrite_slug'] ?? 'message'));
@@ -348,14 +352,13 @@ class Integration {
         }
 
         $icon_show = $settings['message_icon_show'] ?? ['nav_menu'];
-        if (!is_array($icon_show)) {
-            $icon_show = ['nav_menu'];
-        }
-        $allowed_positions = ['nav_menu', 'avatar', 'mobile_bar'];
-        $icon_show = array_values(array_intersect($icon_show, $allowed_positions));
+        $allowed_positions = ['nav_menu', 'avatar_dropdown', 'user_center_header', 'user_home_header'];
+        $icon_show = is_array($icon_show)
+            ? array_values(array_intersect($icon_show, $allowed_positions))
+            : [];
 
         return [
-            'enabled'       => !empty($settings['message_s']),
+            'enabled'       => self::message_enabled(),
             'slug'          => $slug,
             'icon_show'     => $icon_show,
             'paginate_type' => $paginate,