ChangeBrief

One-line positioning: 不是再读一遍所有资料，而是每天 30 秒知道真正变化了什么。

ChangeBrief is not another knowledge base.

It is the incremental change layer that sits on top of notes, documents, meeting summaries, research collections, and connector outputs.

Its job is to help the user answer:

• 这周新增了哪些重要信息
• 哪几份文档的说法变了
• 哪些旧结论现在可能失效
• 哪些冲突已经需要拍板
• 哪 3 个变化最值得马上行动

It should feel like a calm change-briefing officer for managers and operators: short, current, and biased toward decision value rather than recap volume.