feat: お知らせの確認待機時間・優先順位機能

b7fd6bf33a835fd73c2a86eb007074d3680f6efd によるリワーク

This reverts commit eeef3965b7
This reverts commit 04fefb2056
This reverts commit 576251200f

packages/frontend/src/ui/visitor.vue

@@ -96,6 +96,7 @@ provideMetadataReceiver((info) => {
 
 const announcements = {
 	endpoint: 'announcements',
+	offsetMode: true,
 	limit: 10,
 };