Agent Skills: tweet-insight

从推文出发，深度阅读关联内容，整理成原创分享帖。不是翻译，而是学习后用自己的话讲出来。Use when user provides tweet URL(s) and wants to create an original post based on the content. Triggers on "帮我整理这条推", "写一条分享帖", "tweet insight", "digest this tweet", or when user provides x.com/twitter.com URLs and asks to write about them.