Initial frontend repository commit.

Include app source and update .gitignore to exclude local release artifacts and signing files.

Made-with: Cursor

src/components/business/index.ts

@@ -0,0 +1,14 @@
+/**
+ * 业务组件导出
+ */
+
+export { default as PostCard } from './PostCard';
+export { default as CommentItem } from './CommentItem';
+export { default as UserProfileHeader } from './UserProfileHeader';
+export { default as NotificationItem } from './NotificationItem';
+export { default as SystemMessageItem } from './SystemMessageItem';
+export { default as SearchBar } from './SearchBar';
+export { default as TabBar } from './TabBar';
+export { default as VoteCard } from './VoteCard';
+export { default as VoteEditor } from './VoteEditor';
+export { default as VotePreview } from './VotePreview';