DSH Plugin dsh-workspace-explorer: Browse Workspace Files and Insert References in Web UI

dsh-workspace-explorer is a native plugin for the DSH Web UI, designed to address the inconvenience of manually inputting file paths in a workspace. It adds a "Workspace Files" button to the session header, which opens a directory tree browser for the current workspace. Core features include on-demand lazy loading of directories, automatic hiding of noisy directories, display of colorful file icons, and support for appending file references to the input box via click or drag-and-drop, along with multi-select batch insertion. The plugin includes a built-in settings panel for adjusting parameters such as hidden directories and preview line counts, and supports text pagination preview as well as direct editing and saving to disk. It adapts to light and dark themes based on DSH design tokens and supports both Chinese and English. Installation can be completed via the `dsh plugin` command or through dynamic plugin methods. This plugin is ideal for developers who frequently need to reference local source code, configuration files, and other files in models, reducing