fix: stick mobile footer nav to bottom

src/i18n.tsx

@@ -121,6 +121,9 @@ const zhDict: Dict = {
   favorites: "我的收藏",
   favoritesComingSoon: "功能即将推出",
   favoritesComingSoonDesc: "登入与收藏功能开发中，敬请期待。",
+  featureUnavailable: "未开放",
+  featureUnavailableDesc: "该功能暂未开放。",
+  confirm: "知道了",
   backToHome: "返回首页",
 };
 
@@ -236,6 +239,9 @@ const enDict: Dict = {
   favoritesComingSoon: "Coming Soon",
   favoritesComingSoonDesc:
     "Sign-in and favorites are in development. Stay tuned.",
+  featureUnavailable: "Not available yet",
+  featureUnavailableDesc: "This feature is not available yet.",
+  confirm: "Got it",
   backToHome: "Back to Home",
 };