Bites the DSH: Read-Only Playback of Native DeepSeek Harness Sessions

Bites the DSH is a session replay plugin designed for the DeepSeek Harness WebUI. It transforms the native conversation view into a replayable timeline, allowing users to replay past interactions like a video, with operations such as pause, fast-forward, seeking, and script control. Implemented through the Harmony patching mechanism, the plugin remains strictly read-only during replay and does not interfere with the source session, aiming to address the pain points developers encounter when debugging and reviewing agent behavior.