dsh-mermaid-smooth

In the DeepSeek Harness web chat, Mermaid code fences in assistant replies are plain text by default, making architecture diagrams, flowcharts, and sequence diagrams far harder to parse than simply viewing them as graphics. dsh-mermaid-smooth automatically renders every completed Mermaid fence into an SVG diagram the moment it is ready, leaving all other code blocks untouched.

For interaction, the plugin offers cursor-anchored wheel zoom with a brief ease-out, direct pointer drag, and double-click-to-fit, all honouring the system reduced-motion preference. Each diagram card carries an independent diagram/code toggle at its top-right corner; multiple fences in one message switch independently, and the preference persists in localStorage across reloads and reconnects. Diagrams re-render to match the GUI theme in dark mode, and the entire Mermaid engine is bundled inside the plugin at strict security level with zero CDN dependencies.

Ideal for developers and technical writers who regularly read or generate Mermaid diagrams in DSH: no need to copy code into an external editor or switch tools. View, zoom, and compare source inline, with an experience that feels native to the GUI.