<critical_constraints> ✅ MUST use standard ADR format ✅ MUST include: Title, Context, Decision, Consequences ✅ MUST auto-number files (001, 002, etc.) </critical_constraints>
<when_to_use>
- •Tech stack change (e.g., "Switch to Tailwind")
- •Design pattern adoption
- •Major dependency added/removed
- •Structural codebase change </when_to_use>