dsh-covariance: A Pure Node.js Covariance Calculation Plugin

dsh-covariance is a plugin for DeepSeek Harness (DSH), focused on providing covariance calculation capabilities. Fully implemented in Node.js, it has no network dependencies and runs entirely locally, making it suitable for data analysis and statistical scenarios sensitive to network requests. Before installation, specific Cordis and DSH tool dependencies must be met. Developers should refer to the source code or documentation to invoke the relevant calculation methods. By reducing the cost of feature extension, the plugin enhances the flexibility of DSH.