dsh-beige-theme: DSH Web GUI Beige Skin Theme

`dsh-beige-theme` is a beige light-mode theme plugin for DeepSeek Harness (DSH), designed to improve eye comfort and reading experience during extended AI coding sessions. By applying component-level visual modifications, it provides a warm, eye-friendly interface with a paper-like UI texture. It is implemented based on the official token contract, modifying only the visual layer without touching business logic. Installation requires configuring dependencies in a Profile Bundle and running an initialization command, and it can be toggled on or off via interface settings or browser console APIs.