dsh-xiapan-media: Adding Vision, Image Generation, and Video Generation to DeepSeek Harness

`dsh-xiapan-media` is a client plugin for DeepSeek Harness (DSH), designed to integrate visual understanding, image generation, and video generation capabilities into existing text conversations by connecting to the Xiapan cloud service. Maintained by `dongsheng123132` under the MIT license, the plugin requires Node.js >=22.19.0. Its core features include: leveraging the `xiapan-vision` route for image understanding and OCR, supporting direct image paste with backend translation into text; performing image generation and modification via the `gpt-image-2` model; and calling the Seedance service to generate 5-15 second videos. The plugin supports standalone installation via `cordis.patch.yml` or