Add charting and diagram tools to write/publish workflow (e.g. Mermaid)



- https://mermaid.js.org

This would be useful for reporting content.

<img width="1386" alt="Image" src="https://github.com/user-attachments/assets/0c3f854a-2a4e-45ed-a1a9-bc21c8a2c6c2" />