[
  {
    "type": "alter_table",
    "description": "Add private access level to staff_chat_channels for user-level channel access control",
    "database": "{{store}}",
    "check_query": "SHOW COLUMNS FROM staff_chat_channels WHERE Field = 'accessLevel' AND Type LIKE '%private%'",
    "sql": "ALTER TABLE `staff_chat_channels` MODIFY COLUMN `accessLevel` enum('public','manager','owner','private') NOT NULL DEFAULT 'public'"
  }
]