DSH Web GUI PiUI-style diff viewer plugin: replaces the stock DiffBlock for write/edit tool calls via ui-tool diff-card chain slots (host patch included). Private.

[dsh]为纯文本模型设计更强大的视觉工具箱：一行安装使用、粘贴图片直接识别、多张图片问答、截图到前端UI 还原等｜DeepSeek Harness-native integration for agent-vision-toolkit: image Q&A, long-screenshot OCR, UI restoration, grounding, pixel diff, Artifacts, and Web UI.