@anestis271/dsh-desktop: Giving DeepSeek Harness Official WebUI a Desktop Shell

@anestian271/dsh-desktop is an npm plugin for DeepSeek Harness (DSH), designed to wrap the official WebUI as a native desktop application shell, addressing the need for users to have native windows, system tray, and quick-launch entries without installing a standalone MSI/DMG installer or forking the official codebase. Following the "everything is a plugin" philosophy, this plugin retains all business functionality of the official WebUI and only adds desktop integration capabilities at the outer layer. Core features include: providing native window controls, a system tray (supporting real-time bilingual switching between Chinese and English, show/hide, refresh, and other operations), optional desktop quick-launch entries, and login-on-startup. It ensures that only one window and tray instance is maintained per profile, and clicking the shortcut again directly brings up the existing window rather than creating duplicate instances.