This is slick. Are there plans for rendering LaTeX equations and/or diagrams/flowcharts, such as mathjax and/or mermaid.js?
A relatively simple thing would be to add "preview block" which e.g. for mermaid blocks would add a panel with rendered diagram.
A much more complicated solution would be to add codemirror view which renders diagram when cursor is outside the markup and switches to editing when inside markup.
But that's significantly more complicated.
A much better UI would be something like what you described, such as
- https://github.com/benrbray/prosemirror-math?tab=readme-ov-f...