dsh-native-launcher: Adding a Windows Desktop Launch Experience for DeepSeek Harness Web UI

dsh-native-launcher is a Windows-oriented DSH plugin designed to enhance the DeepSeek Harness Web UI into an entry point with a desktop application experience. Rather than relying on heavyweight runtimes such as Electron or Python, the plugin leverages Windows native mechanisms to achieve lightweight extension. Its core features include: generating desktop shortcuts for one-click launching or focusing an existing window; providing a standalone application window with its own taskbar icon and no browser address bar; managing launch and exit through a persistent system tray icon, with native notifications for task statuses (such as completion, errors, and pending approvals); supporting configuration of the service exit behavior when the window is closed; and offering a visual settings page for managing launch commands, ports, and individual functional modules. The plugin supports one-click uninstallation, cleaning up shortcuts...