Understand Diff

This one analyzes git diffs against your project's knowledge graph to show you not just what changed, but what might break. It greps through the graph JSON to find nodes for your modified files, traces their edges to find upstream callers and downstream dependencies, and flags which architectural layers you're touching. The risk assessment pulls from node complexity and the blast radius of affected components. Honestly most useful when you're reviewing someone else's PR and need to quickly understand the ripple effects without reading every file. It writes a diff overlay JSON that the dashboard can visualize, which beats staring at a wall of grep output.