dsh-ds-vision-auto-route: DSH Image Routing Plugin

dsh-ds-vision-auto-route is a plugin for DeepSeek Harness that automatically routes requests containing images to image-capable models. It uses the `llm-vision-route` service to intelligently dispatch requests based on policies (such as `turn-image`) and records routing logs. Although it offers flexible configuration and logging, the plugin is marked as deprecated because DeepSeek V4.1 Flash natively supports multimodality and newer Harness versions include this feature. In addition, when used in production environments, manual model switching may still be required.