[
  {
    "type": "alter_table",
    "description": "Add assignmentSource column to userStoreAssignments to track how each assignment was created (manual vs sync). This prevents WhenIWork sync from deactivating manually-created multi-store assignments.",
    "database": "kiosk_users",
    "check_query": "SHOW COLUMNS FROM userStoreAssignments LIKE 'assignmentSource'",
    "sql": "ALTER TABLE `userStoreAssignments` ADD COLUMN `assignmentSource` enum('manual','sync') NOT NULL DEFAULT 'manual' COMMENT 'How this assignment was created: manual by admin, or sync from external provider' AFTER `role`"
  }
]