Refactoring trigger pocket guide
Match common OOP smells to focused refactoring moves.
Feature Envy: move data or move behavior? Compare Feature Envy asks whether behavior lives too far from the information it needs. Long Method: what is the safest first extraction? Extract a named step that has a coherent purpose and can be understood independently. Do not extract arbitrary line ranges; extract the concept inside the method. Objection: 'This class is huge; let's rewrite it.' The class is production-critical and has weak tests. Your line Let's first add characterization tests around the behavior we need to change, then use Extract Class on one responsibility cluster. A rewrite without behavior protection converts design…
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