DSH Performance Guard: A Performance Diagnostics and Isolation Tool for DeepSeek Harness

`qinshige/dsh-performance-guard` is a performance diagnostic plugin for DeepSeek Harness, designed to address performance bottlenecks introduced by third-party plugins. It provides comprehensive monitoring, including browser frame rate, Host process resources, tool execution time, and session structure tracking. The plugin supports establishing baselines, configuring A/B experiments for isolation testing, and using multi-run experiments to quantitatively validate the effectiveness of fixes, ultimately generating detailed reports. It emphasizes security and privacy by recording only necessary metadata and not collecting sensitive data. Developers can use it to perform long-session stress testing and complete the performance optimization loop.