dsh-vision-primitives: Adding Pixel-level Visual Reasoning Primitives to DSH Agents

dsh-vision-primitives is a native visual reasoning plugin for DeepSeek Harness (DSH), designed to address issues of imprecise visual localization and the lack of reproducible coordinate benchmarks. It does not require an external MCP server; through an engineering process of "image-to-grid," "coordinate parsing," "local zooming," and "deterministic verification," it achieves precise pixel-level localization. Core functions include SOM grid overlay, pixel-level coordinate parsing, lossless local zooming, and verification tools such as annotation, measurement, OCR, color finding, and frame differencing. The plugin optionally connects to the MiMo V2.5 multimodal backend to enhance understanding capabilities, while also supporting pure local usage. It minimizes OS boundaries, executing screenshots, OCR, and file persistence solely through PowerShell, without including mouse or keyboard control. It features easy installation and supports the DSH plugin system.