AI: commit message & documentation generation

This course covers how to give an AI assistant the right material when it drafts commit messages, pull request descriptions and project documentation. It starts from a repository's own commit history and the convention that history shows. The lessons cover handing over git diff --staged and git status output instead of a memory of the change, and pasting recent git log output so the AI follows the project's pattern. They also cover the four parts of a useful PR description and basing CI claims on the jobs in ci.yml. A final lesson takes one diff through every step.