[
  {
    "type": "alter_table",
    "description": "Spec 049 T1.2.4: Add breakPolicyEnabled feature-flag column to stores table (off by default; ADR-3 per-store rollout gate)",
    "database": "kiosk_buykiosk",
    "check_query": "SELECT COLUMN_NAME FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = 'kiosk_buykiosk' AND TABLE_NAME = 'stores' AND COLUMN_NAME = 'breakPolicyEnabled'",
    "sql": "ALTER TABLE `stores` ADD COLUMN `breakPolicyEnabled` TINYINT(1) NOT NULL DEFAULT 0 COMMENT 'Spec 049: Per-store kill switch for the break-policy engine. Off by default; flipped per pilot store at Phase 3 cutover.'"
  }
]