Enhance the current collection function

Clear and concise description of the problem

能对收藏的文章条目，进行打标签、分类，甚至可以把自己的收藏夹二次分享成rss。
例如，刷酷安，刷到好多小丑，此时就可以把这些帖子打标签，做个聚合，二次生成rss。

Suggested solution

就像 tiny tiny rss一样。对文章打标签，然后生成新的rss链接。

Alternative

把帖子保存到obsdian，然后发布到自己的网站，使用一共单独的网站作为某个收藏夹的rss。

Additional context

No response

Validations

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• This issue is valid

The issue proposes tagging and categorizing saved articles, then sharing a collection as a new RSS feed, with Obsidian and a personal website as alternatives. No files, tests, or entry points are mentioned; first clarify the intended product scope and implementation location. Done would mean a defined collection workflow and a working RSS link for it.