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legacy-refactor

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UpdatedJuly 3, 2026 at 14:50

Use when changing legacy code, refactoring behavior that lacks tests, reducing risk in old modules, separating concerns, migrating code incrementally, or when a requested cleanup may accidentally change production behavior.

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nandinhos

nandinhos/harness-ultracodex

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Software DevelopersComputer and Mathematical Occupations·SOC 15-1252

SKILL.md

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name	legacy-refactor
description	Use when changing legacy code, refactoring behavior that lacks tests, reducing risk in old modules, separating concerns, migrating code incrementally, or when a requested cleanup may accidentally change production behavior.

Legacy Refactor

Regra central

Preserve comportamento antes de melhorar forma.

Fluxo

Mapear comportamento atual.
Identificar contratos publicos e dependencias.
Criar teste de caracterizacao quando nao houver cobertura.
Reduzir blast radius.
Alterar em passos pequenos.
Rodar testes afetados.
Reportar riscos residuais.

Nao fazer

Reescrever sem conhecer comportamento atual.
Misturar refatoracao com mudanca funcional escondida.
Alterar contrato publico sem decisao explicita.

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