dsh-custom-ui: Custom UI Plugin for DeepSeek Harness Web

dsh-custom-ui is a plugin developed for DeepSeek Harness Web, designed to address the cumbersome operations of existing interfaces in file navigation and balance monitoring. It integrates real-time balance monitoring and a file tree sidebar directly into the editor, significantly improving development efficiency. Balance data is secured through server-side API key parsing. The file tree supports collapsing, show/hide toggling, and opening files with system applications. Users can install it via CLI and restart the service to use it. The plugin provides related API endpoints, but credential configuration and source-code security checks should be handled carefully. The project is licensed under the MIT License.