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The Refactor Receipt: Freeze Behavior, Cap the Diff, Then Ask a Model for Edge Cases

Example scenario (hypothetical, not a real repository): you inherit a 4,000-line pricing module with three entry points, one global cache, and tests that assert only that the import succeeds. A coding agent proposes a 300-line cleanup that claims to preserve behavior and adds twelve new tests. The…

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  1. 2026-11-09 20:50 · DEV Community — AI
    The Refactor Receipt: Freeze Behavior, Cap the Diff, Then Ask a Model for Edge Cases

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