/understand-diff

Overview

Analyze git diffs and pull requests using the codebase knowledge graph to understand the true impact and risk of code changes. The skill maps changed files to graph nodes, follows edges to find affected components, identifies cross-layer concerns, and produces a structured risk assessment.

Graph Structure Reference

The knowledge graph JSON has this structure:

• project — {name, description, languages, frameworks, analyzedAt, gitCommitHash}
• nodes[] — each has {id, type, name, filePath, summary, tags[], complexity, languageNotes?}
  • Node types: file, function, class, module, concept
  • IDs: file:path, func:path:name, class:path:name
• edges[] — each has {source, target, type, direction, weight}
  • Key types: imports, contains, calls, depends_on
• layers[] — each has {id, name, description, nodeIds[]}
• tour[] — each has {order, title, description, nodeIds[]}

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