优化弹窗和后台设置字体

backend/internal/modules/systemconfig/repository.go

@@ -31,6 +31,7 @@ var defaultConfigs = []defaultConfig{
 	{Key: "order.pending_payment_timeout_minutes", Value: "15", Description: "订单待支付超时取消分钟数"},
 	{Key: "order.return_overdue_grace_minutes", Value: "10", Description: "预计截止后结账宽限分钟数"},
 	{Key: "listing.review_required", Value: "false", Description: "发布账号是否需要后台人工审核"},
+	{Key: orderAgreementsConfigKey, Value: defaultOrderAgreementsConfigValue(), Description: "下单前协议配置 JSON"},
 	{Key: "chat.default_support_admin_id", Value: "1", Description: "订单群聊回退客服 ID（仅当无可用客服时使用）"},
 	{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: homeAnnouncementsConfigKey, Value: defaultHomeAnnouncementsConfigValue(), Description: "移动端首页公告 JSON 数组"},
@@ -50,6 +51,7 @@ var adminVisibleConfigKeys = []string{
 	"listing.sale_price_config",
 	"mobile.home_announcements",
 	"mobile.home_banners",
+	"order.agreements",
 	"order.pending_payment_timeout_minutes",
 	"order.return_overdue_grace_minutes",
 }