dsh-blood-pressure: Blood Pressure Classification Plugin

The DeepSeek Harness (DSH) plugin `dsh-blood-pressure` is designed to address imprecise model recommendations in healthcare scenarios. It is a pure Node.js local plugin that requires no internet connection and provides precise classification and recommendations based on blood pressure readings. Developers can install it via the command line and invoke its tools in a session to obtain health advice. Medical disclaimers and compliance requirements should be observed when using the plugin.