feat(api): 添加立减金主体类型映射及展示支持

- 在导出接口中将goods_voucher_subject_config.type字段的数值映射为对应标签显示
- 新增VoucherSubjectType映射，支持支付宝、微信、云闪付三种主体类型
- 修改字段标签描述，将“主体类型”更新为“立减金主体类型”以更准确表达含义

server/internal/api/exports.go

@@ -1146,6 +1146,15 @@ func transformRow(ds string, fields []string, vals []string) []string {
 			}
 			continue
 		}
+		// goods_voucher_subject_config.type - 主体类型
+		if f == "goods_voucher_subject_config.type" {
+			if n := parseIntVal(v); n >= 0 {
+				if label, ok := constants.VoucherSubjectType[n]; ok {
+					vals[i] = label
+				}
+			}
+			continue
+		}
 		// order_cash.channel - 红包渠道
 		if f == "order_cash.channel" {
 			if n := parseIntVal(v); n >= 0 {

server/internal/constants/enums.go

@@ -217,6 +217,13 @@ var YMTVoucherReceiveMode = map[int]string{
 	2: "账号领取",
 }
 
+// VoucherSubjectType 立减金主体类型映射
+var VoucherSubjectType = map[int]string{
+	1: "支付宝",
+	2: "微信",
+	3: "云闪付",
+}
+
 // OrderDigitOrderType 数字订单类型映射
 var OrderDigitOrderType = map[int]string{
 	1: "直充",

server/internal/schema/fields.go

@@ -199,7 +199,7 @@ func AllLabels() map[string]string {
 		"goods_voucher_batch.update_time":          "更新时间",
 		"goods_voucher_subject_config.id":          "主体配置ID",
 		"goods_voucher_subject_config.name":        "主体名称",
-		"goods_voucher_subject_config.type":        "主体类型",
+		"goods_voucher_subject_config.type":        "立减金主体类型",
 		"goods_voucher_subject_config.create_time": "创建时间",
 		"merchant.id":                              "客户ID",
 		"merchant.name":                            "客户名称",