Architecture records

Record	Status
ADR-000: Context and High-Level Decisions	Accepted
ADR-001: Optional entry points and core refinements	Accepted
ADR-002: Stable optional undo/redo	Accepted
ADR-003: Support equatable 2.x and 3.x	Accepted

The earlier proposals numbered ADR-001 to ADR-009 were never accepted or implemented and were removed; they remain in Git history. The current ADR-001 is a new record that reuses that number. Use a new record to supersede a decision.