dsh-umi-ocr-vision: Umi-OCR Vision Bridge Plugin for DeepSeek Harness

The DeepSeek Harness plugin `dsh-umi-ocr-vision` uses a plugin-based architecture to provide visual understanding to text-only main models (such as `deepseek-official`). It leverages the locally running Umi-OCR tool to automatically recognize image contents and transform them into “untrusted observation data” injected into the context. The plugin supports multiple attachments and both HTTP and CLI modes, ensuring that data remains local, and offers a rich set of `vision_*` tools. Installation is simple: Umi-OCR must be started first, and the relevant parameters configured in the configuration file.