fix(api): 调整营销及订单凭证元数据字段显示状态

- 移除外部请求时间字段的隐藏标记以修正展示问题
- 将订单凭证的外部业务号字段设置为隐藏，提升数据隐私保护
- 优化元数据表中相关字段的可见性配置以符合业务需求

server/internal/api/metadata.go

@@ -141,7 +141,6 @@ func marketingMetadataTables() []tableInfo {
 				{Key: "merchant_key_send.reseller_id", Field: "reseller_id", Label: "分销商id", Hidden: true},
 				{Key: "merchant_key_send.merchant_id", Field: "merchant_id", Label: "分销商开放商户号", Hidden: true},
 				{Key: "merchant_key_send.out_biz_no", Field: "out_biz_no", Label: "商户侧业务号 需保持唯一", Hidden: false},
-				{Key: "merchant_key_send.out_timestamp", Field: "out_timestamp", Label: "外部请求时间", Hidden: true},
 				{Key: "merchant_key_send.key_batch_id", Field: "key_batch_id", Label: "key批次id ", Hidden: true},
 				{Key: "merchant_key_send.stock_id", Field: "stock_id", Label: "计划编号", Hidden: true},
 				{Key: "merchant_key_send.plan_id", Field: "plan_id", Label: "计划id", Hidden: true},
@@ -249,7 +248,7 @@ func marketingMetadataTables() []tableInfo {
 				{Key: "order_voucher.receive_mode", Field: "receive_mode", Label: "发券方式", Hidden: false},
 				{Key: "order_voucher.receive_error", Field: "receive_error", Label: "领取失败原因", Hidden: false},
 				{Key: "order_voucher.app_id", Field: "app_id", Label: "APPID", Hidden: false},
-				{Key: "order_voucher.out_biz_no", Field: "out_biz_no", Label: "外部业务号", Hidden: false},
+				{Key: "order_voucher.out_biz_no", Field: "out_biz_no", Label: "外部业务号", Hidden: true},
 				{Key: "order_voucher.fail_time", Field: "fail_time", Label: "领取失败时间", Hidden: true},
 				{Key: "order_voucher.notify_url", Field: "notify_url", Label: "回调通知地址", Hidden: true},
 				{Key: "order_voucher.account_no", Field: "account_no", Label: "账户编号", Hidden: true},