Conduct Read-only Health Check for DSH Plugin Repository with dsh-plugin-check

The community plugin `dsh-plugin-check` is maintained by omdsh-dev, which provides read-only health checks for the DeepSeek Harness plugin repository: it scans manifest protocols, patch formats, build pitfalls and hub inclusion status, registers the `plugin_check` tool and outputs JSON reports. This article verifies the installation command, three types of actions, detection items classified by form, and precautions for web/headless profiles according to the directory page and GitHub README/source code.