DeepSeek Harness Chat Image Lightbox Plugin

Introducing the DeepSeek Harness (DSH) plugin `loyalchiiina/dsh-chat-image-lightbox`. This plugin addresses the issue of chat-interface images being displayed only as thumbnails by providing a full-screen lightbox viewing experience. Core features include click-to-zoom, drag-to-pan, download, multi-image navigation, filename display, accessibility support, and high-resolution original image preview. The installation command is `dsh plugin ... add @loyalchiiina/dsh-chat-image-lightbox`. When using the plugin, note that images must use HTTP(S) URLs and the process must be restarted after installation.