dsh-revert: DeepSeek Harness Conversation Revert & Retry Plugin

dsh-revert is a client plugin purpose-built for DSH to address high-frequency needs such as conversation rollback, prompt fine-tuning, and file undo. It enables in-place prompt fine-tuning through GUI-based interaction and uses a dual-engine snapshot mechanism with ShadowGit and ExternalFileTracker to ensure safe recovery of both the workspace and external files. Users can hover over a chat message and click “Revert & Retry,” or modify the prompt directly in a popup. The plugin supports multi-platform adaptation, streamlining debugging and rollback workflows, making it suitable for developers who frequently manage state.