dsh-rollback

In a multi-turn DeepSeek Harness conversation, the model continuously modifies workspace files and accumulates context. The moment a turn goes off track, developers often want to undo it, but there is no convenient rollback entry and no mechanism to restore file state and conversation history in lockstep — rolling back files alone leaves hallucinated continuity, while truncating the dialog alone leaves the file changes in place.

dsh-rollback follows TRAE-style rollback design, establishing lightweight per-turn checkpoints and restoring both the workspace files touched since that turn (writing back originals, restoring deleted files, removing newly created ones) and the model context (in-place truncation that preserves the same session id) to the state before that turn started. A 10-round sliding window is retained; targets beyond the range are explicitly rejected. In the DSH Web UI a rollback button appears after each completed turn, offering a reviewable list of affected files before confirmation, and the /rollback command supports listing, previewing, and executing. Empty directories created by the rolled-back turn are cleaned up, and rollback is denied while any turn is still running to prevent state interleaving.

Best for developers who iterate heavily in DSH Web and frequently need to undo model operations. It does not replace version control; instead, it treats the conversation plus workspace as a single atomic state, giving every step a reliable way to step back.