Add a blog post for the OpenAI Codex for Open Source grant, list it on
the blog index, and repoint the OpenAI sponsor logo (README + landing) to
the post — matching how the Anthropic (/blog/3) and Atlas Cloud (/blog/8)
sponsor logos link to their posts.
Co-authored-by: Claude <noreply@anthropic.com>
Asim Aslam