feat(channel): 支持安全删除渠道并保留历史数据

server/internal/handler/export.go

@@ -145,7 +145,7 @@ func (h *SessionHandler) Export(c *gin.Context) {
 	channelMap := map[uint]model.Channel{}
 	if len(channelIDs) > 0 {
 		var channels []model.Channel
-		model.DB.Where("id IN ?", service.UniqueUint(channelIDs)).Find(&channels)
+		model.DB.Unscoped().Where("id IN ?", service.UniqueUint(channelIDs)).Find(&channels)
 		for _, ch := range channels {
 			channelMap[ch.ID] = ch
 		}
@@ -323,7 +323,7 @@ func (h *StatisticsHandler) Export(c *gin.Context) {
 
 	// 渠道
 	var channels []model.Channel
-	model.DB.Where("tenant_id = ?", tenantID).Find(&channels)
+	model.DB.Unscoped().Where("tenant_id = ?", tenantID).Find(&channels)
 	channelTypes := make(map[uint]string)
 	for _, channel := range channels {
 		channelTypes[channel.ID] = channel.Type