test/orders.test.js passes on the baseline schema and fails in all 2 candidate runs. New in every candidate run, absent from the control run: SQLSTATE 23514 (check_violation): new row for relation "orders" violates check constraint "orders_total_positive" — statement: INSERT INTO orders (customer_id, total_cents) VALUES ($1, $2) RETURNING id, status The previous application version reproducibly fails against the proposed schema, and the failure is linked to a specific schema change. test/orders.test.js: SQLSTATE 23514 (check_violation) linked to constraint_added:orders.orders_total_positive by R4 constraint violation ↔ added/changed constraint.