dsh-plugin-manager-lite: DeepSeek Harness Third-Party Plugin Manager

dsh-plugin-manager-lite is a static bundle plugin for DeepSeek Harness, designed to address the fragmented management of third-party plugins. It provides a unified management entry point through a Web GUI, supporting plugin listing, enabling/disabling, uninstallation, and update checking. The plugin reads package.json to display plugin information, persists disabled states, and supports updates only via npm installation. Installation requires DeepSeek Harness 0.1.0-rc.7 and Node.js >= 18, and it can be quickly deployed using the `dsh plugin` command. During development, pay attention to the synchronization mechanism between the source code and its copy in the profile directory.