order_key	payment_state	delivery_state	evidence_state	next_step
O01	pending	none	no_record	confirm_payment
O02	paid	processing	no_record	processing
O03	paid	completed	no_record	verify_plan
O04	paid	completed	recent_plus	plus_observed
O05	paid	completed	stale	review_evidence
O06	paid	completed	account_mismatch	review_evidence
O07	refunded	completed	recent_plus	refund_review
O08	paid	completed	recent_other_plan	review_evidence
O09	paid	completed	invalid_time	review_evidence