dsh-stzb: DSH Web "Lu Tu Zhi Bin" Style Skin

dsh-stzb is a purely client-side theme plugin designed for the DeepSeek Harness Web GUI. By overriding design tokens, it offers two styles: a dark “Iron-Blood Battlefield” theme and a light “Ink-Wash Classical” theme. It features Song serif typography, xuan paper textures, classical decorative elements, and adaptation to the system color scheme, without relying on React; all assets are generated solely with CSS and SVG. Install it with `dsh plugin --profile web add github:weijunliang23/dsh-stzb`, run `preview.html` to preview the effect, or modify the source code for further development.