dsh-step-goal: Step Count and Stride Length Calculation Plugin

The DeepSeek Harness (DSH) plugin `dsh-step-goal` provides local step count and stride calculation capabilities. It is implemented in pure Node.js, requires no network requests, and supports precise calculations based on parameters to return detailed results. The installation command is `dsh plugin add github:uckkk/dsh-step-goal`. Users should pay attention to environment dependency versions and are advised to review the source code and license. The plugin offers a lightweight calculation tool for agent development.