dsh-bone-check: Bone Density Screening Tool

`dsh-bone-check` is a local plugin specifically designed for DeepSeek Harness (DSH) for model inference or agent development. Maintained by uckkk, it provides bone density screening calculations implemented in pure Node.js with no network dependency. It depends on `@deepseek-ai/cordis` and `@deepseek-ai/dsh-tools`, and can be invoked in a DSH session after installation. Note that it runs with the current process's permissions, and the returned health recommendations are for reference only; please consult your physician.