Read the reference file that matches the task:
- How It Works — to understand the overall mechanism.
- Validation Rules — what the app validates and when a PR passes or fails.
- Why are 2 approvals required for a pull request? — to explain why a PR needs two approvals.
- How To Avoid 2 Approvals — to reduce a PR's approval requirement.
- Config — to change configuration (trusted_apps, untrusted_machine_users, approval/unsigned-commit rules).
- Customize footer — to customize the footer shown on the Checks tab.
- Environment Variables — to configure how the app runs.
- Secrets — to set up the app's secrets.
- Merge Queue Support — when the repository uses a merge queue.