dsh-we-wallpaper-sync: Batch Manage Wallpaper Engine Wallpapers and Integrate with the DSH Skin Center

`dsh-we-wallpaper-sync` is a wallpaper management plugin for DSH agents. By integrating the Steam Web API and steamcmd, it enables bulk searching and downloading of Wallpaper Engine Steam Workshop wallpapers without requiring the Steam client. The plugin supports proxy configuration to address network access restrictions in mainland China, and downloaded wallpapers can be automatically added to the DSH Skin Center for use as GUI backgrounds. When using the plugin, configure the proxy and scan paths properly, and never hardcode credentials, to ensure stable operation.