Change Management (Stable Interface / Deletion)
Use when
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Changing public APIs across layers (ports, facades, stores).
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Introducing a new pattern or architectural decision.
Workflow
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Define minimal stable interface (MSI): smallest API callers need.
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Prefer additive change; if breaking, include migration notes.
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Add ADR-lite notes (what/why/risks) when boundaries change.
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Verify deletion path: feature can be removed without global entanglement.
References
- .github/instructions/68-change-management-copilot-instructions.md