feat: add mathpixel

internal/service/task.go

@@ -89,8 +89,11 @@ func (svc *TaskService) GetTaskList(ctx context.Context, req *task.TaskListReque
 		var markdown string
 		recognitionResult := recognitionResultMap[item.ID]
 		if recognitionResult != nil {
-			latex = recognitionResult.NewContentCodec().GetContent().(string)
-			markdown = fmt.Sprintf("$$%s$$", latex)
+			latex = recognitionResult.Latex
+			markdown = recognitionResult.Markdown
+			if markdown == "" {
+				markdown = fmt.Sprintf("$$%s$$", latex)
+			}
 		}
 		originURL, err := oss.GetDownloadURL(ctx, item.FileURL)
 		if err != nil {