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code-simplification

Use when the user asks to simplify, clean, or refine code. Not for new abstractions or whole-codebase refactors.

.devin/skills/code-simplification/SKILL.md

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# Code simplification

Two modes share one authority: reversible local edits to a named target, no new public surface, behavior preserved. Measured mode proves reduction with the test suite; clarity mode proves preservation by reasoning over the recorded behavior contract.

## Contract

| Field | Bound contract |
|---|---|
| Trigger | User asks to simplify, clean, refactor, or improve the readability of code, or review flags bloat beyond the current diff. |
| Authority | Reversible local: writes only the named target (may refactor, extract, inline, and collapse conditionals; may not add new public surface or edit files outside the target); rollback is version control or undo. No remote mutation. |
| Side effect | Refactoring edits to the named target only; no new public surface. |
| Done | Mode-specific done predicate holds (see each mode); behavior is preserved by tests (measured) or by recorded-contract reasoning (clarity). |

## Inputs