Turn DeepSeek Harness "Everything is Plugin" into a Runnable Chinese Course Using dsh-harness-tutorial

dsh-harness-tutorial is an MIT open-source Chinese tutorial maintained by yanhua1010, which breaks down DeepSeek Harness's "everything is a plugin" concept into a VitePress site, 8 runnable demos locked at version 0.1.0-rc.6, and a teaching-oriented mini-harness (React + Node.js TypeScript). Although categorized under "Tools and Capabilities" in community directories, the repository itself serves as educational material rather than a runtime capability plugin. This article verifies the directory page and GitHub repository to explain what it is, how to read the four lessons, how to run the demos locally, and how to complete the final project.