Phase 0 — the deploy path

This page exists to prove three things about the hosting, and nothing else. It is not the website.

1. Clean URLs resolve with no rewrite rules — this page is served from index.html by DirectoryIndex.
2. A missing route returns the 404 document.
3. The OG image is served as image/png despite having no file extension.

If all three hold, Phase 1a can start. If any of them doesn't, this is a much cheaper place to find out.