实现租客成长等级并优化展示

backend/internal/modules/systemconfig/repository.go

@@ -8,6 +8,7 @@ import (
 
 	"hfb_sys/backend/internal/auditlog"
 	"hfb_sys/backend/internal/model"
+	"hfb_sys/backend/internal/modules/rentergrowth"
 
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
@@ -36,6 +37,7 @@ var defaultConfigs = []defaultConfig{
 	{Key: listingPublishAgreementsConfigKey, Value: defaultListingPublishAgreementsConfigValue(), Description: "发布账号前协议配置 JSON"},
 	{Key: orderAgreementsConfigKey, Value: defaultOrderAgreementsConfigValue(), Description: "下单前协议配置 JSON"},
 	{Key: postRentalNoticeConfigKey, Value: defaultPostRentalNoticeConfigValue(), Description: "租后须知配置 JSON"},
+	{Key: rentergrowth.ConfigKey, Value: rentergrowth.DefaultConfigValue(), Description: "租客成长等级规则 JSON（积分门槛/下单折扣）"},
 	{Key: "chat.default_support_admin_id", Value: "2", Description: "默认客服 ID（必须是启用状态的客服角色）"},
 	{Key: "chat.auto_welcome_message", Value: "欢迎加入订单群聊！如有任何问题，请随时沟通。", Description: "建群后自动发送的欢迎话术"},
 	{Key: "chat.listing_group_welcome", Value: "欢迎加入账号群！请号主扫描下方二维码加入企业微信群，方便客服与您及时联系。", Description: "发布群创建后自动发送的欢迎语"},
@@ -73,6 +75,7 @@ var adminVisibleConfigKeys = []string{
 	"order.pending_payment_timeout_minutes",
 	"order.return_overdue_grace_minutes",
 	"profile.post_rental_notice",
+	"renter.growth_level_rules",
 }
 
 func NewRepository(db *gorm.DB) *Repository {