dsh-message-edit

Edit a message you have already sent in the DeepSeek Harness (DSH) web UI — in the same chat or as a branch, and optionally rewind what that turn did to your files.

What it does

Adds an Edit action above each of your sent user messages. Clicking it opens an editor with two destinations:

• Same chat (default) — the corrected text is sent as the next message in the current conversation.
• New branch — the session is forked at the event just before that message, the branch opens, and the corrected text is sent there.

Both modes can first run Rewind files (see below), and the branch mode leaves the original session completely untouched.

Why "Same chat" keeps the original visible

DSH's transcript is append-only. Model history is a folded surface that surface replacements can change, but replacement copies stay model-only: the chat keeps rendering what you actually sent, by design. So no plugin can rewrite a sent bubble in place — the honest same-conversation option is to send the corrected text as the next turn. Choose New branch when you want the conversation to actually continue from the edited message.

File rewind

Branching (or correcting) does not touch the filesystem: without extra help the files the original turn touched stay modified on disk. For a message that was the session's last user turn, the editor adds an "Also revert the N files this turn changed" option. Reverting restores each file the turn changed to its turn-start content and deletes files the turn created, using the per-turn snapshots the DSH workspace-changes recorder already keeps.

A file is only restored when its current content still matches the recorded turn-end state; a file modified again afterwards is skipped, never clobbered. Binary and oversized files are skipped. An older message (not the last user turn) has no rewind option.

Requirements

• DSH web profile (dsh web) — plugin is a Web bundle (Host + Client halves).
• Works with any provider route; no keys of its own.

Install

From a checkout of this repository, use the DSH plugin manager with this directory as the target, then refresh the web page and look for the Edit button above sent user messages:

install_bundle → /path/to/dsh-message-edit

Once the package is published on npm (this package name is reserved for that), the same command accepts the spec @haroon0x/dsh-message-edit instead of a directory.

Limitations

• Text-only messages (attachments are not carried into a correction or branch).
• Same-chat edits append the corrected message; the original stays in the transcript.
• Branches create a new session rather than rewriting history in place.
• Rewind covers files the workspace-changes recorder captured for that turn; shell edits outside git, binary or oversized files, and turns from before a Host restart are not covered.

Uninstall

Disable or remove the @haroon0x/dsh-message-edit bundle via the plugin manager.

License

MIT — see LICENSE.