The original title is "Put a Deterministic Gate Between Generated Code and Main"

Short summary

This tutorial presents a POSIX shell script that acts as a deterministic gate for AI-generated code entering a repository, checking patch size, sensitive paths, and Git structural integrity before allowing merges. It includes working code, GitHub Actions integration, and test cases demonstrating both pass and fail scenarios. The approach keeps merge policy independent of whichever AI coding agent produced the patch, ensuring consistent review standards.

• •Shell script enforces patch size limits, sensitive-path blocking, and Git structural checks before merge
• •Includes GitHub Actions integration and reproducible test cases for both acceptance and rejection
• •Gate is tool-independent—works regardless of which AI agent generated the code

Generated with AI, which can make mistakes.