增加最后一次操作类型

internal/app/dto/inventory_converter.go

@@ -14,17 +14,20 @@ func ConvertCurrentStockToDTO(material *models.RawMaterial, latestLog *models.Ra
 
 	stock := float32(0)
 	lastUpdated := material.CreatedAt.Format(time.RFC3339) // 默认使用创建时间
+	var lastOperationSourceType models.StockLogSourceType
 
 	if latestLog != nil {
 		stock = latestLog.AfterQuantity
 		lastUpdated = latestLog.HappenedAt.Format(time.RFC3339)
+		lastOperationSourceType = latestLog.SourceType
 	}
 
 	return &CurrentStockResponse{
-		RawMaterialID:   material.ID,
-		RawMaterialName: material.Name,
-		Stock:           stock,
-		LastUpdated:     lastUpdated,
+		RawMaterialID:           material.ID,
+		RawMaterialName:         material.Name,
+		Stock:                   stock,
+		LastUpdated:             lastUpdated,
+		LastOperationSourceType: lastOperationSourceType,
 	}
 }