Update 01 of 02
GitHub code access for every project member
Any project member can turn on Code Access for the GitHub App, and it is on by default for new repositories.
Under Settings → Integrations → GitHub App, any project member can now see and toggle Code Access, which lets the agent read your full codebase during reviews. New repository connections have it on by default; existing ones keep their current setting.
More on this: PR testing and PR and CI/CD testing.