dsh-plugin-vision-toolkit: Integrating Vision Capabilities into DeepSeek Harness Agents

This plugin equips DeepSeek Harness (DSH) agents with visual perception capabilities. By registering system skills, it converts images into text descriptions or coordinate information, addressing the limitation that agents cannot process images directly. It provides four core tools: glance (description/question/OCR), ground (element localization), detect (instance detection), and crop (cropping). Installation requires specifying a configuration file and setting the visual API key and model. The tool processes data as text without accessing raw pixels, aiming to extend the application boundaries of agents.