dsh-anime-theme: DeepSeek Harness Anime Wallpaper Theme Plugin

The `dsh-anime-theme` plugin aims to provide DeepSeek Harness with visually appealing random anime wallpapers, solving the monotonous-default-theme issue. Core features include face-safe smart cropping, edge feathering to eliminate hard seams, blank-space blur treatment, and adaptive light/dark mode support. Users can customize the wallpaper fill mode, adjust the dim overlay and blur effect, and use a draggable control dock for quick actions. The plugin does not require a Pixiv account or store images locally; it only forwards links via API and relies on the host’s proxy to resolve cross-origin restrictions. An installation command is provided, and disabling the plugin automatically cleans up its stylesheet.