CREATE TABLE IF NOT EXISTS `im_content_moderation_logs` (
  `id` BIGINT NOT NULL AUTO_INCREMENT,
  `request_id` VARCHAR(64) NOT NULL,
  `scene` VARCHAR(32) NOT NULL,
  `topic` VARCHAR(96) NOT NULL DEFAULT '',
  `seqid` BIGINT DEFAULT NULL,
  `actor_id` BIGINT DEFAULT NULL,
  `provider` VARCHAR(32) NOT NULL DEFAULT '',
  `provider_request_id` VARCHAR(96) NOT NULL DEFAULT '',
  `risk_level` VARCHAR(16) NOT NULL DEFAULT 'none',
  `risk_labels` JSON DEFAULT NULL,
  `action` VARCHAR(16) NOT NULL,
  `content_hash` CHAR(64) NOT NULL,
  `latency_ms` BIGINT NOT NULL DEFAULT 0,
  `error_code` VARCHAR(64) NOT NULL DEFAULT '',
  `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  PRIMARY KEY (`id`),
  UNIQUE KEY `uk_im_content_moderation_request` (`request_id`),
  KEY `idx_im_content_moderation_scene_time` (`scene`,`created_at` DESC,`id` DESC),
  KEY `idx_im_content_moderation_actor_time` (`actor_id`,`created_at` DESC,`id` DESC),
  KEY `idx_im_content_moderation_topic_seq` (`topic`,`seqid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;