Introducing the DSH Plugin: dsh-car-seat

The `dsh-car-seat` plugin in the DeepSeek Harness (DSH) ecosystem is maintained by uckkk and is licensed under MIT. Implemented in pure Node.js locally with no network dependencies, it focuses on child safety seat selection functionality. By using the `car_seat` tool, developers can perform precise calculations based on specific parameters and obtain clear recommendations. The installation command is `dsh plugin add github:uckkk/dsh-car-seat`.