CREATE TABLE IF NOT EXISTS plugin_virenscan_files (
  id INT AUTO_INCREMENT PRIMARY KEY,
  attachment_id INT NOT NULL,
  ticket_id INT NULL,
  original_name VARCHAR(255) NOT NULL,
  stored_name VARCHAR(255) NOT NULL,
  status VARCHAR(20) NOT NULL,
  signature VARCHAR(255) NULL,
  message VARCHAR(255) NULL,
  quarantined TINYINT(1) NOT NULL DEFAULT 0,
  scanned_at DATETIME NOT NULL,
  UNIQUE KEY idx_plugin_virenscan_attachment (attachment_id),
  KEY idx_plugin_virenscan_status (status, quarantined)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4