Why this change? Because of the lint recommendation that top-level variables are named in upper case, or something else?

Given that it's now an instance instead of a class, PascalCase didn't seem right to me, and it also seemed like a good idea to have a visual distinction between the two in the URLS-map. I don't remember if ruff complained about this, really just a personal preference, and I probably won't be hard to convince if you prefer a different case.

It's a good practice to do so, but the reasoning to why weren't immediately clear to me. I'm good as this is now.