Code Simplify

The skill

Reduce a change's complexity WITHOUT altering behavior — lower cognitive load, not line count: read the target plus its callers and tests, take a baseline check, then apply the smallest clarifying edits in safest order (dead code and boolean cleanup → flatten nesting with guard clauses → consolidate duplication → local renames and helper extraction), respecting Chesterton's Fence. Re-runs the baseline after each edit and reverts any change that alters observable behavior or regresses, keeping only the safe improvements — a simplification that changes semantics is a bug, not a cleanup. Use only when the user explicitly asks to simplify or clean up existing code.

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