Add production favicon set for marketing page (#196)

- add 16x16, 32x32, and Apple touch icon assets
- update `index.astro` head links to reference size-specific favicons
8c904ffe34Theo Browne committed on 3/6/2026, 11:53:32 PM· committed by GitHubparent9fa9cb4
5 files changedLine totals unavailable