Code Audit Skill

CRITICAL RULE: Never delete data or code files. Copy to legacy/, never move or delete originals.

Systematically review and understand old code, data, and analysis files.

Purpose

Based on Scott Cunningham's workflow of reviving old projects - understanding what exists, documenting it, and making it safe to work with.

For formal audits with cross-language replication and referee reports, use the Referee 2 agent (.claude/agents/referee2-reviewer.md). This skill is for understanding and documenting existing code, not formal verification.

When to Use

• Returning to an old project after months/years
• Taking over code from a coauthor
• Before extending existing analysis
• R&R requiring you to revisit old work