This looks like a very simple mindmap, but more annoying to use because of the big elements. Some automated positioning seems very necessary here. Additionally, what about proper mindmap/diagram-features and notes?
If you take a look at https://obsidian.md/canvas you will see that they have things like colored groups and different element-types. And their community-extensions have many more improvements for the canvas. Just focusing on navigation seems wasted. A good focus on mixing code, documentation and notes might be a more worthy goal, I think.
Anyway, as this is forked from VS Code, does this also support normal vscode-extensions and other features like workspaces? And does it receive updates from the original, or is it fixed to the initial forked VS Code-version?