✨ Post content local cache

lib/translations/en_us.dart

@@ -93,8 +93,11 @@ const i18nEnglish = {
   'totalPostCount': 'Posts',
   'totalUpvote': 'Upvote',
   'totalDownvote': 'Downvote',
+  'clear': 'Clear',
   'pinPost': 'Pin this post',
   'unpinPost': 'Unpin this post',
+  'postRestoreFromLocal': 'Restore from local',
+  'postAutoSaveAt': 'Auto saved at @date',
   'postOverview': 'Overview',
   'postPinned': 'Pinned',
   'postListNews': 'News',

lib/translations/zh_cn.dart

@@ -87,8 +87,11 @@ const i18nSimplifiedChinese = {
   'totalPostCount': '总帖数',
   'totalUpvote': '获顶数',
   'totalDownvote': '获踩数',
+  'clear': '清除',
   'pinPost': '置顶本帖',
   'unpinPost': '取消置顶本帖',
+  'postRestoreFromLocal': '内容从本地暂存回复',
+  'postAutoSaveAt': '已自动保存于 @date',
   'postOverview': '帖子概览',
   'postPinned': '已置顶',
   'postEditorModeStory': '发个帖子',