[
  {
    "type": "alter_table",
    "description": "Add 'status' to chat_messages category enum for system divider messages (e.g., new buy started)",
    "database": "{{store}}",
    "check_query": "SELECT COLUMN_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'chat_messages' AND COLUMN_NAME = 'category' AND COLUMN_TYPE LIKE '%status%'",
    "sql": "ALTER TABLE `chat_messages` MODIFY COLUMN `category` enum('transactional','interactive','status') NOT NULL COMMENT 'Message category: transactional (auto SMS), interactive (staff SMS), status (system dividers)'"
  }
]