feat(client): i18n copy + reco lang refresh + home polish

client/src/storage/appStorage.ts

@@ -42,6 +42,12 @@ export type RecoFeedCacheItem = {
 
 export type RecoFeedCache = {
   saved_at: string; // ISO8601
+  /**
+   * 缓存文案的语言（后端目前只区分 en / tc）
+   * - en: English
+   * - tc: 繁体中文
+   */
+  lang?: 'en' | 'tc';
   items: RecoFeedCacheItem[];
   meta?: Record<string, unknown>;
 };
@@ -107,6 +113,10 @@ export async function setReaction(contentId: string, reaction: Reaction): Promis
 export type FavoriteItem = {
   favId: string; // 唯一标识，支持重复点赞同一文案
   id: string;
+  /**
+   * 收藏时的文案快照（强烈建议写入，避免后续 cache 覆盖导致无法还原文案）
+   */
+  text?: string;
   date: string;
   themeMode: ThemeMode;
   background: string; // 颜色值或图片路径
@@ -120,7 +130,7 @@ export async function addFavorite(item: FavoriteItem): Promise<void> {
   const list = await getFavorites();
   // 允许重复点赞，不再根据 id 去重
   const newList = [item, ...list];
-  console.log('Adding to favorites, new list size:', newList.length);
+  console.log('Adding to favorites:', JSON.stringify(item));
   await setJson(KEY_FAVORITES_ITEMS, newList);
 }