dsh-theme-escook: DeepSeek Harness Dark Violet and Amber Gold Aesthetic Theme

dsh-theme-escook is a DeepSeek Harness plugin ported from the VS Code escook theme. It features a dark blue-gray background with amber-gold accents, delivering a unified night-sky aesthetic for both the Web GUI and desktop clients, while supporting code syntax highlighting and full UI coverage. After installation, users can switch to it instantly from the Theme Marketplace tab without restarting, enhancing the visual experience during extended use.