Ticket #90 PR #29 Review: pass_audit approved Allow cancel and approve transitions from any ticket state. These are PO override commands that bypass normal workflow constraints. Changes: - approve: Now available from 7 states (backlog, todo, in_progress, pending_audit, review, pending_approval, blocked) → done - cancel: Now available from 8 states (all except cancelled) → cancelled - Added 9 new tests for the expanded transitions - All 46 tests pass Acceptance criteria all met: - cancel transition available from all states (except cancelled) ✓ - approve transition available from all states (except done/cancelled) ✓ - Tests added for global cancel/approve ✓ - No breaking changes to existing workflow ✓