需求，私密分享功能。

[salviox]

Is your feature request related to a problem?

文章默认私密，但提供设置一个密码可以访问该条内容， 高级一点可设置访问次数以及到期时间。

Describe the solution you'd like

略

Additional context

No response

[Issues-translate-bot]

Issue is not in English. It has been translated automatically.

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Title: Requirements, private sharing function.