CREATE TABLE `digital_employee_sync_record`
(
    `id`          BIGINT       NOT NULL AUTO_INCREMENT COMMENT '主键',
    `_tenant_id`  BIGINT       DEFAULT NULL COMMENT '租户ID',
    `user_id`     BIGINT       DEFAULT NULL COMMENT '用户ID',
    `client_key`  VARCHAR(128) NOT NULL COMMENT '客户端配置Key',
    `device_id`   VARCHAR(128) DEFAULT NULL COMMENT '设备ID',
    `outbox_id`   VARCHAR(255) NOT NULL COMMENT '客户端outbox ID',
    `entity_type` VARCHAR(32)  NOT NULL COMMENT '实体类型：plan/task/run/event/artifact/approval',
    `entity_id`   VARCHAR(255) NOT NULL COMMENT '客户端实体ID',
    `operation`   VARCHAR(32)  NOT NULL COMMENT '操作类型',
    `payload`     JSON         DEFAULT NULL COMMENT '实体快照',
    `synced_at`   DATETIME     NOT NULL COMMENT '最近同步时间',
    `modified`    DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    `created`     DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (`id`),
    UNIQUE KEY `uk_client_outbox` (`client_key`, `outbox_id`),
    KEY `idx_client_entity` (`client_key`, `entity_type`, `entity_id`),
    KEY `idx_tenant_user_time` (`_tenant_id`, `user_id`, `synced_at`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8mb4
  COLLATE = utf8mb4_unicode_ci
  COMMENT = '数字员工客户端同步记录';