修复二维码库存与过期时间编辑

backend/internal/modules/chat/listing_group.go

@@ -12,8 +12,8 @@ import (
 
 // 会话类型常量
 const (
-	ConversationTypeOrderGroup   = "order_group"
-	ConversationTypeListingGroup = "listing_group"
+	ConversationTypeOrderGroup     = "order_group"
+	ConversationTypeListingGroup   = "listing_group"
 	ConversationTypeGeneralSupport = "general_support"
 )
 
@@ -297,6 +297,7 @@ func checkQrCodeStockAndAlert(tx *gorm.DB, conversation *model.ChatConversation)
 	var count int64
 	if err := tx.Model(&model.ChatQrCode{}).
 		Where("status = ?", QrCodeStatusUnused).
+		Where("expires_at IS NULL OR expires_at > ?", time.Now()).
 		Count(&count).Error; err != nil {
 		return err
 	}
@@ -319,6 +320,7 @@ func checkQrCodeStockAndAlert(tx *gorm.DB, conversation *model.ChatConversation)
 
 		// 发送站内信给所有客服
 		var entries []interface{}
+		now := time.Now()
 		for _, admin := range csAdmins {
 			entries = append(entries, map[string]interface{}{
 				"admin_user_id": admin.ID,
@@ -326,13 +328,13 @@ func checkQrCodeStockAndAlert(tx *gorm.DB, conversation *model.ChatConversation)
 				"title":         "二维码库存预警",
 				"content":       alertContent,
 				"is_read":       false,
-				"created_at":    time.Now(),
-				"updated_at":    time.Now(),
+				"created_at":    now,
+				"updated_at":    now,
 			})
 		}
 
 		if len(entries) > 0 {
-			// 批量插入通知
+			// 批量插入管理员通知
 			if err := tx.Table("admin_notifications").Create(entries).Error; err != nil {
 				return err
 			}