dsh-web-search-multi: DeepSeek Harness Multi-Provider Web Search Plugin

DeepSeek Harness (DSH) has released the `dsh-web-search-multi` plugin, designed to address the challenges of relying on a single search engine configuration. The plugin supports five search backends—SearXNG, Brave, Tavily, Gemini, and Wikipedia—and features zero-configuration setup, independent toggles, and precise routing. Installation requires a compatible Node.js version, while configuration can be managed through the web interface or by editing files. It also allows search to be enabled as needed within a session. The plugin does not handle SearXNG deployment and has compatibility limitations with older versions of DSH, offering users a flexible and controlled Web search solution.