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   "issues": [
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     "level": "error",
     "node_id": "lp",
     "edge_id": null,
     "message": "循环条件有误：表达式中不支持 | 过滤器（那是模板的写法）：取长度请写 len(x)，转换大小写请写 upper(x) / lower(x)（原文：{{ vars.items | length }} > 5）",
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      "data": {
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    "edges": [
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     },
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      "id": "lp:body->body",
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    "viewport": {},
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   "issues": [],
   "explanation": "数一数",
   "autorun": true,
   "layout": {
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    "config": {
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  },
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   "op": "add_edge",
   "edge": {
    "source": "lp",
    "target": "out",
    "sourceHandle": "done"
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  },
  {
   "op": "done",
   "explanation": "数一数",
   "run": true
  },
  {
   "op": "check",
   "status": "repairing",
   "round": 1,
   "issues": [
    {
     "level": "error",
     "node_id": "lp",
     "edge_id": null,
     "message": "循环条件有误：不支持函数 foo()，可用的函数：len、str、int、float、bool、abs、min、max、sum、round、sorted、any、all、lower、upper、contains、startswith、endswith、matches、get、cell（原文：foo(vars.items)）",
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   "round": 2,
   "issues": [
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     "node_id": "lp",
     "edge_id": null,
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     "node_id": "lp",
     "edge_id": null,
     "message": "循环条件有误：不支持函数 bar()，可用的函数：len、str、int、float、bool、abs、min、max、sum、round、sorted、any、all、lower、upper、contains、startswith、endswith、matches、get、cell（原文：bar(vars.items)）",
     "field": "condition",
     "code": null,
     "fix": null
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   ],
   "warnings": []
  },
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       "config": {
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      "data": {
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       "description": "",
       "config": {
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      "sourceHandle": null,
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     },
     {
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      "sourceHandle": null,
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     },
     {
      "id": "lp:body->body",
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    "viewport": {},
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   "issues": [
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     "node_id": "lp",
     "edge_id": null,
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     "field": "condition",
     "code": null,
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   "explanation": "数一数",
   "autorun": false,
   "layout": {
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    "placed": [
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     "lp",
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 "reply": [
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   "op": "model",
   "model": "mock-fast"
  },
  {
   "op": "reply",
   "text": "上一轮已经查过了：一共 3 家门店。"
  }
 ],
 "ask_only": [
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   "op": "model",
   "model": "mock-fast"
  },
  {
   "op": "plan",
   "summary": "先问清楚"
  },
  {
   "op": "ask",
   "question": "要看哪个月的？",
   "options": [
    "九月",
    "十月"
   ]
  },
  {
   "op": "final",
   "graph": {
    "nodes": [],
    "edges": []
   },
   "issues": [],
   "explanation": "",
   "autorun": false,
   "layout": {
    "mode": "keep",
    "placed": []
   },
   "tool_changes": [],
   "asked": {
    "question": "要看哪个月的？",
    "options": [
     "九月",
     "十月"
    ]
   }
  }
 ],
 "error": [
  {
   "op": "model",
   "model": "mock-fast"
  },
  {
   "op": "error",
   "message": "助手本轮未完成：接入返回了 502",
   "hint": "",
   "detail": "RuntimeError: 接入返回了 502"
  }
 ],
 "no_ops": [
  {
   "op": "model",
   "model": "mock-fast"
  },
  {
   "op": "error",
   "message": "助手本轮未完成：模型的输出格式不对，没有一行能认出的操作",
   "hint": "画布未修改。可以重试，或把需求描述得更具体",
   "detail": ""
  }
 ],
 "truncated": [
  {
   "op": "model",
   "model": "mock-fast"
  },
  {
   "op": "plan",
   "summary": "想了很久"
  },
  {
   "op": "error",
   "message": "助手本轮未完成：模型的输出超出了长度上限，修改没有写完",
   "hint": "画布未修改。可以重试，或把需求拆成几步分别提出",
   "detail": "finish_reason=length"
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}