JsExecNode节点在执行节点级循环中运行_result.c = (_result.c || 0) + 1未能实现累加

复现场景
- 构建简单流程：Start → Code(JS) → End；开启 Code 节点的 loopEnable=true，maxLoopCount=5。
- Code 节点脚本：_result.c = (_result.c || 0) + 1;
- 执行流程；返回 count 应为 5，实际为 1。

测试的代码如下：

package com.agentsflex.chain.node;

import com.agentsflex.core.chain.*;
import com.agentsflex.core.chain.node.EndNode;
import com.agentsflex.core.chain.node.StartNode;

import java.util.Arrays;
import java.util.Collections;
import java.util.UUID;

public class LoopChainTest {
    public static void main(String[] args) {
        StartNode startNode = new StartNode();
        startNode.setId("start");
        JsExecNode codeNode = new JsExecNode();
        codeNode.setId("code");
        codeNode.setCode("_result.c = (_result.c||0) + 1;");
        codeNode.setLoopEnable(true);
        codeNode.setMaxLoopCount(5);
        codeNode.setLoopIntervalMs(0);

EndNode endNode = new EndNode();
        endNode.setId("end");
        Parameter parameter = new Parameter();
        parameter.setId(UUID.randomUUID().toString());
        parameter.setName("count");
        parameter.setDataType(DataType.Number);
        parameter.setRefType(RefType.REF);
        parameter.setRef("code.c");
        endNode.addOutputDefs(Arrays.asList(parameter));

Chain chain = new Chain();
        chain.addNode(startNode);
        chain.addNode(codeNode);
        chain.addNode(endNode);

ChainEdge edge = new ChainEdge();
        edge.setId(UUID.randomUUID().toString());
        edge.setSource(startNode.getId());
        edge.setTarget(codeNode.getId());
        chain.addEdge(edge);

ChainEdge edge1 = new ChainEdge();
        edge1.setId(UUID.randomUUID().toString());
        edge1.setSource(codeNode.getId());
        edge1.setTarget(endNode.getId());
        chain.addEdge(edge1);

java.util.Map<String, Object> res = chain.executeForResult(Collections.emptyMap());
        Object count = res.get("count");

System.out.println(count);
    }
}

GVP Agents-Flex/Agents-Flex

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