dsh-better-markdown: Replace the Streaming Markdown Rendering Pipeline for DeepSeek Harness Web

dsh-better-markdown is a DeepSeek Harness Web client plugin maintained by zerob13, which uses markstream-react to take over the streaming and settled Markdown rendering for assistant messages. It supports Mermaid, KaTeX, and Shiki code highlighting, with a fallback to the Harness built-in renderer in case of errors. The article introduces the plugin's positioning, functional scope, the working principle of slot shadowing, and three installation methods: npm, source code, and Git. It also explains compatibility, size trade-offs, and security considerations.