Every PR is a learning moment. sphinx-ci generates a code comprehension quiz from your Pull Request diff using AI. Comment /sphinx on any PR, and the Sphinx creates questions based on the actual code changes. The developer answers the quiz — pass it, and the merge is unlocked. Why? Too many PRs get merged with a quick "LGTM" and nobody truly understands the code. sphinx-ci turns every PR into an opportunity to learn — not a gate to pass, but a mirror to reflect on what you're shipping.