dsh-heart-zone: Heart Rate Zones and Home Health Self-Check

The DeepSeek Harness (DSH) plugin `dsh-heart-zone` provides a purely local, network-independent solution for obtaining structured health data. Maintained by uckkk and implemented in Node.js, the plugin’s main features include calculating heart rate zones based on provided parameters and returning at-home health self-check results. Users can install it via terminal commands and invoke its tools within a session. The plugin runs with the permissions of the current DSH process, making it suitable for scenarios that require direct access to health data without relying on external APIs.