refactor(model): 重构模型网关实体和映射逻辑

service/task/worker.go

@@ -205,7 +205,7 @@ func (w *asyncWorker) callModelAsync(ctx context.Context, task *entity.ModelGate
 		return nil, err
 	}
 	// 2. 拿到 task_id
-	taskID := gjson.New(body).Get(model.ResponseBody).String()
+	taskID := gjson.New(body).Get(entity.ResponseBody).String()
 
 	// 3. 创建等待通道
 	ch := make(chan asyncResult, 1)
@@ -310,8 +310,8 @@ func (w *asyncWorker) parseAndRetry(ctx context.Context, body map[string]any, ta
 		}
 
 		// 2) 先存 token 到数据库，防止后续失败丢失
-		if _, ok := mapped[model.ResponseTokenField]; ok {
-			task.ExpendTokens = gconv.Int64(mapped[model.ResponseTokenField])
+		if _, ok := mapped[entity.TotalTokens]; ok {
+			task.ExpendTokens = gconv.Int64(mapped[entity.TotalTokens])
 			_, err = dao.ModelGatewayTask.Update(ctx, &entity.ModelGatewayTask{
 				SQLBaseDO:    beans.SQLBaseDO{Id: task.Id},
 				ExpendTokens: task.ExpendTokens,
@@ -327,7 +327,7 @@ func (w *asyncWorker) parseAndRetry(ctx context.Context, body map[string]any, ta
 				return parsed, nil
 			}
 		case public.BuildTypeStruct:
-			parsed = util.ParseStructResult(mapped, model.ResponseBody)
+			parsed = util.ParseStructResult(mapped, entity.ResponseBody)
 			return parsed, nil
 		default:
 			return mapped, nil