DeepSeek Harness Hub: Wrapping dsh Web UI into a Native Desktop Window

# Introduction When using `dsh`, the Web UI typically runs in browser tabs: windows are mixed among a cluster of tabs, lacking a distinct taskbar identity; switching tabs risks missing the timing of task completion; parallel multi-sessions are merely makeshift via browser tabs; and title bars and icons cannot follow `dsh`'s theme changes. For developers using `dsh` as their primary interface, these are daily frictions. `dsh`'s philosophy is "everything is a plugin," and the desktop-ification of the tool is also addressed by the plugin layer—this is the DeepSeek Harness Hub (dsh-hub) introduced below. It uses Tauri 2.x native windows to host the `dsh` Web UI, filling in desktop capabilities such as the system tray, notifications, session tabs, interactive terminal, and window memory. The project itself also...