This example shows a static HTML page that displays the message "Hello HTML!" centered on the screen, using CSS for styling. The page loads no external JavaScript or data visualization; it is a bare-bones starter template. The code defines a simple `data.ts` file containing an empty array with a placeholder `sourceProject` field, but this data is not referenced. The rendering relies on plain HTML and CSS, with no visualization libraries such as D3 or React components involved. It serves as a foundational template for future projects.