本地优先是什么意思
本地优先不是“不能联网”，而是把文件所有权放回作者手里。Sheaf 默认让文稿保存在本地磁盘，文件格式保持普通 Markdown。你可以用 Finder 管理文件，也可以用 Git 做版本管理，还可以用自己信任的同步工具备份。
这种方式适合长期写作：几年后你仍然可以用任何文本编辑器打开这些文件，而不是依赖某个在线服务继续存在。
AI 功能为什么要有 diff 审阅
AI 很适合做润色、改写和压缩，但它也可能改变事实、删掉细节或替换掉你的表达。Sheaf 不让 AI 直接覆盖正文，而是在应用前展示差异，让作者决定是否接受。
隐私设计
- 不要求注册账号。
- 文稿和设置保存在本机。
- AI 请求使用你自己配置的供应商和 API Key。
- 修改建议需要经过 diff 审阅后才会应用。
- 每次应用 AI 修改前保存版本快照，降低误改风险。
适合谁
如果你写技术文档、产品说明、论文草稿、博客、公众号或长期笔记，并且希望 Markdown 文件能长期保留在自己的目录里，Sheaf 会比强云端绑定的写作工具更合适。
如果你的核心需求是团队实时协作、多人评论和在线权限管理，那 Sheaf 不是替代协作文档的工具；它更像一个安静、可控、适合独立写作和发布前整理的桌面编辑器。
What local-first means
Local-first does not mean “never online.” It means file ownership stays with the writer. Sheaf stores drafts on your disk and keeps them as plain Markdown, so you can manage them with Finder, Git, or your own sync tool.
This matters for long-term writing. Years from now, your files can still be opened with any text editor.
Why AI edits need diff review
AI is useful for rewriting and tightening paragraphs, but it can also remove nuance or change meaning. Sheaf shows proposed edits as a diff before they touch your document.
Privacy model
- No account required.
- Documents and settings stay on your device.
- AI requests use the provider and API key you configure.
- AI suggestions are reviewed before applying.
- A version snapshot is saved before each accepted AI edit.
Who should use it
Sheaf is for writers who want local Markdown files, careful AI-assisted editing, and publishing exports without handing their whole writing workflow to a cloud service.