feat: 支持视频模型首帧参数及顺序执行逻辑

添加 FirstFrame 字段到模型信息结构体，重构视频节点数据转换处理，支持从上游节点获取视频配置并区分输出字段。实现视频结果重新上传至 OSS，修正字段匹配逻辑为精确匹配，并基于 return_last_frame 参数优化顺序执行中的首帧与内容传递。

workflow/service/flow/lambda_node_util.go

@@ -299,7 +299,22 @@ func GetModelResult(ctx context.Context, sessionId string, nodeInput *flowDto.No
 	if !nodeInput.Global.IsDialogue {
 		sessionId = ""
 	}
-
+	needSequential := false
+	for _, item := range userForm {
+		if g.NewVar(item).IsMap() {
+			valMap := gconv.Map(item)
+			for _, v := range valMap {
+				if g.NewVar(v).IsMap() {
+					vv := gconv.Map(v)
+					for kk, vvv := range vv {
+						if kk == "return_last_frame" {
+							needSequential = vvv.(bool)
+						}
+					}
+				}
+			}
+		}
+	}
 	composeResult, err := GetComposeResult(ctx, buildType, nodeInput.Config.ModelConfig.ModelName, nodeInput.Config.PromptContent, skillName, form, userForm, nodeInput.Global.FileUrl, sessionId, nodeInput.Config.Id, nodeInput.Config.Name)
 	if err != nil {
 		return nil, err
@@ -316,13 +331,12 @@ func GetModelResult(ctx context.Context, sessionId string, nodeInput *flowDto.No
 	mapTaskResult = make([]map[string]any, len(composeResult.Messages.Rounds))
 	var taskResultMap map[string]any
 
-	needSequential := false
 	if buildType == 1 {
 		if needSequential {
 			for idx, item := range composeResult.Messages.Rounds {
 				if !g.IsEmpty(taskResultMap) {
 					var set string
-					set, err = sjson.Set(gconv.String(item), modelInfo.Model.LastFrame, gconv.String(taskResultMap[modelInfo.Model.ResponseBody]))
+					set, err = sjson.Set(gconv.String(item), modelInfo.Model.FirstFrame, gconv.String(taskResultMap["content"]))
 					if err != nil {
 						return nil, err
 					}
@@ -339,7 +353,7 @@ func GetModelResult(ctx context.Context, sessionId string, nodeInput *flowDto.No
 				}
 
 				if nodeInput.Config.NodeCode == node.NodeTypeVideoModel {
-					ext := GetFileTypeByPath(gconv.String(taskResult[modelInfo.Model.ResponseBody]))
+					ext := GetFileTypeByPath(gconv.String(taskResult["content"]))
 					if ext == "image" {
 						taskResultMap = taskResult
 					} else {