DSH Rewind & Redo — by FileSnap：对话和文件一起回退，选错了还能撤销

[S2thend]

agent 跑了三轮，第 2 轮是对的，第 3 轮把文件改坏了。你想回到第 2 轮——对话和磁盘一起回去。

DSH Rewind & Redo — by FileSnap（安装包名 dsh-filesnap）做的就是这件事：

• /rewind <turn>：文件回到那一轮之前，对话在那里 fork，原对话原样保留、标题带 ↩
• /redo：在 fork 里反转这次回退，回到原对话
• /rewind status：这个工作区哪些文件没有被保护、为什么
• 不需要 git 仓库，也不写你的 git（不 commit、不 stash、不 reset）；快照存在平台数据目录，不在项目里

原对话保留下来，但两个会话共用一个工作区目录；这不是两份独立文件副本。快照引擎是 FileSnap，捕获与覆盖边界见教程。

$ dsh plugin --profile web add dsh-filesnap

0.2.2 起自带 dsh.bundle，装完就挂载，不用手改 cordis.patch.yml。

两个已知限制，先说清楚：

1. 卸载插件后，它抓过快照的会话在重装前打不开（数据完好）。原因是 harness 目前没有给仓库外插件的事件类型注册接口，也没法让 Session.append 给非 surface 事件打 ignorable——这个我们希望上游能补一个 append 选项，读取端已经认这个字段。
2. 从源码 checkout 用 pnpm dsh 启动时会出现同样的拒绝，因为 tsx 把 harness 解析到 src/、插件解析到 lib/，两份 dsh-session 实例。用构建版 CLI（node apps/cli/lib/bin.js web）或 npm 装的 dsh 就好。

教程：https://extracurricular.ai/zh/blog/dsh-rewind-restore-files/

仓库：https://github.com/extracurricular-ai/dsh-filesnap · 欢迎 issue 和 PR，中文英文都行。

English

DSH Rewind & Redo — by FileSnap: rewind conversations and files, then undo the rewind with /redo

DSH Rewind & Redo — by FileSnap (dsh-filesnap) is a DeepSeek Harness rewind plugin. Restore a conversation and its tracked files together; keep the original conversation and use /redo to reverse the rewind.

• /rewind <turn>: files go back to before that turn; the conversation forks there; the original stays, marked ↩
• /redo: reverses the rewind from inside the fork
• /rewind status: which files here are not protected, and why
• No Git repository required; never writes your Git state. The store lives in the platform data directory, not in your project.

The original conversation is retained, but both conversations share one workspace directory. They are not independent file copies. FileSnap provides the snapshot engine; the tutorial explains its coverage boundaries.

$ dsh plugin --profile web add dsh-filesnap

Known limits: uninstalling leaves sessions it captured unopenable until reinstall (data intact) — the harness has no event-type registration for out-of-repo plugins and append cannot set ignorable, which we hope lands upstream; and a source launch (pnpm dsh) hits the same refusal because tsx resolves the harness to src/ while the plugin resolves to lib/ — use the built CLI or an npm dsh.

Tutorial: https://extracurricular.ai/en/blog/dsh-rewind-restore-files/

https://github.com/extracurricular-ai/dsh-filesnap — issues and PRs welcome.

[S2thend]

dsh-rewind-zh-walkthrough-1080p-upload.mp4

[S2thend]

中文演示

[S2thend]

English walkthrough

▶ Watch on YouTube: DSH Rewind & Redo walkthrough