dsh-motor-current: Motor Current Calculation

The DeepSeek Harness (DSH) plugin dsh-motor-current is dedicated to local motor current calculations. It is implemented in pure Node.js and does not rely on network access. Through the `motor_current` tool, the plugin performs precise calculations based on input parameters and returns the results. It can be installed by running `dsh plugin add github:uckkk/dsh-motor-current` and is automatically registered after installation. The plugin is intended for engineering numerical computation scenarios, depends on specific versions of `@deepseek-ai/cordis` and `@deepseek-ai/dsh-tools`, runs with the current process permissions, and is licensed under the MIT License.