Hello VizHub
This example demonstrates basic D3.js and ES6 module usage in VizHub. It displays a large, centered greeting message and a static SVG circle on a dark blue background. The code uses `select` from D3 v5 to set the div’s text content, and imports a custom `message` from an ES6 module. The SVG renders a single circle without interaction, while CSS styling drives the visual layout and font.