Summary
- Platform-agnostic Mermaid.js diagramming — flowcharts, sequence diagrams, C4 (via Structurizr or flowchart workarounds), class/state/ER diagrams, Gantt, and block diagrams.
- Generates valid Mermaid syntax, renders via mmdc CLI or CDN, and validates before output.
- Portable — works in CLI, markdown, HTML, PDF, and any agentic context.