dsh-plugin-clinic: Read-only health check for DeepSeek Harness plugin suite

dsh-plugin-clinic is an MIT-licensed plugin for DeepSeek Harness, focused on providing read-only plugin health checks. Instead of performing fixes or writing to external state, it evaluates the stability risks of the installed plugin collection through multiple dimensions such as loaders, dependencies, and runtime. Core features include the model tool `plugin_health`, the "Health Check" tab in the Web dashboard, and JSON reports for CI and scripts. The plugin provides 8 read-only checks, such as load health, bundle manifests, peer dependencies, and runtime compatibility, and supports installation and updates via simple npm commands. Configuration options are flexible, allowing for the restriction of the diagnostic scope and the enabling of specific routes. Users can obtain detailed diagnostic results via session commands, the Web GUI, or the HTTP interface. Please note that...