dsh-image-governor: DeepSeek Harness Session Image Payload Governance Plugin

`dsh-image-governor` is an image payload governance plugin for DeepSeek Harness sessions. It addresses the issue of image accumulation in multi-turn conversations, which can lead to prolonged upload times and gateway timeouts. It enables developers to selectively remove redundant images through an interactive interface or command-line tool, altering the model’s visual context without deleting the actual attachments. Core features include viewing payload status, specifying images to retain, quickly removing older images, and restoring accidentally removed images. Implemented in pure JavaScript with zero dependencies, it does not modify frozen requests and performs write operations only when the session is idle.