dsh-socket-count: Switch and Socket Count Plugin

The DeepSeek Harness plugin `dsh-socket-count` is designed to solve the problem of counting switches and sockets. Developed with Node.js, it does not require network requests and supports offline calculation. It registers the `socket_count` tool, which returns precise results based on input parameters. The plugin is released under the MIT license, and the installation command is `dsh plugin add github:uckkk/dsh-socket-count`. Users are advised to review the source code before use to ensure security.