dsh-htmlrun: A DeepSeek Harness Plugin for Publishing Local HTML as html.run Links

`dsh-htmlrun` is a DSH model tool plugin designed to solve the problem that sandbox environments cannot directly call the html.run publishing API. By wrapping a local CLI tool, it integrates the capabilities of publishing, updating, and checking the status of static HTML files into model tools. The plugin does not require additional key configuration; it leverages html.run's local authentication mechanism and supports commands such as `check` and `publish`. A model can directly invoke this tool to convert local HTML into shareable links, making it suitable for quickly publishing single-file static pages.