The 'blockviz' is same kind-of project i tried to create as well (c4 level model zoomable etc.) so i was surprised to see same kind-of project popup - but this is I think also an 'issue' with these model-created-software.. when you reach'your' vision its already done: for example I clicked on the github link, expected a clear About Install Faq kind of README.md but all I get is the model-created explaination :) can't just download some app and use it without friction. I see this a lot.
You can click the big image or the url at the right and use it in browser.
https://blueblazin.github.io/blockviz/
I tried it on some of my code and it's pretty neat, though not fully intuitive to follow more complex code structures for me.