Dashboard D3 · Module 3 · keystone

🔍 Diff Danger — Read the Diff, Spot the Danger

Five diffs, as a coding agent might hand them to you. Some hide a planted bug or a leaked secret; at least one is clean. Click the dangerous line — or declare the diff clean. This drill is what makes "not reading all the code" safe.

The 3 questions before accepting any change: ① Does the diff match the plan I approved? ② What's the blast radius if it's wrong? ③ Is there a test that would catch it being wrong?
Score: 0 / 5 — work through all five.