A merge request changes one README line. The pipeline still calls a model. It costs tokens. It adds latency. It tells you almost nothing. Sound familiar? If you maintain a small CI setup, this failure keeps showing up. The instinct is to put model-based review everywhere. Then the free tier dies in a week. The fix isn't another monitor. It's a small decision gate that decides whether a diff deserves a model call at all. The operator-supplied availability claims for MonkeyCode incl...