dsh-back-care: Back Care Plugin

The `dsh-back-care` plugin for DeepSeek Harness (DSH), maintained by uckkk, belongs to the Workflow category. It is designed to provide lower-back care suggestions to users through the `back_care` tool. Built with Node.js and requiring no network access, it is suitable for local or intranet environments. The installation command is `dsh plugin add github:uckkk/dsh-back-care`. To use it, simply invoke it within a session to receive suggestions. Please note that these suggestions are for reference only and do not replace professional medical diagnosis, and users should also be mindful of runtime permissions and the MIT license.