{"record":{"id":"3199a66f59f7d1e4","repo":"BigPizzaV3/CodexPlusPlus","slug":"id-3199a6","errorCode":null,"errorMessage":"历史消息缺少稳定 ID","messagePattern":"历史消息缺少稳定 ID","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"tools/conversation-canvas/public/canvas.user.js","lineNumber":440,"sourceCode":"      parsed=partial?.messages?.slice()||[];let itemCursor=partial?.cursor??null,limit=32;const cursors=new Set();\n      do{\n        signal?.throwIfAborted();\n        if(cursors.has(itemCursor))throw Error('历史消息分页游标重复');\n        let page;\n        for(;;){\n          try{page=await send('thread/items/list',{threadId,turnId:turn.id,cursor:itemCursor,limit,sortDirection:'asc'});break;}\n          catch(error){\n            if(limit>1&&/decoded message length too large/i.test(error.message)){limit=Math.max(1,Math.floor(limit/2));continue;}\n            throw error;\n          }\n        }\n        if(!Array.isArray(page?.data))throw Error('历史消息接口返回格式无效');\n        cursors.add(itemCursor);\n        for(const row of page.data){\n          if(row.turnId!=null&&row.turnId!==turn.id)throw Error('历史消息所属轮次不匹配');\n          const item=row.item??row;\n          if(!['userMessage','agentMessage'].includes(item.type))continue;\n          if(typeof item.id!=='string')throw Error('历史消息缺少稳定 ID');\n          const role=item.type==='userMessage'?'user':'assistant';\n          const content=role==='user'?(item.content??[]):[{text:item.text??''}];\n          const message=parseMessage({type:'response_item',payload:{type:'message',id:item.id,role,phase:role==='assistant'?(item.phase??'final_answer'):'',content}},item.id);\n          if(message)parsed.push({...message,turnId:turn.id,turnStatus:turn.status});\n        }\n        itemCursor=page.nextCursor??null;\n        onProgress(`正在读取历史 ${index+1}/${turns.length} · 已读 ${parsed.length} 条消息…`);\n        if(turn.status==='completed'&&itemCursor!==null)await cache.set(`${key}:partial`,{messages:parsed,cursor:itemCursor});\n      }while(itemCursor!==null);\n      if(turn.status==='completed'){await cache.set(key,parsed);await cache.delete(`${key}:partial`);}\n    }\n    // Older completed-turn caches contain text and IDs but no turn metadata.\n    // The current directory and cache key provide the authoritative owner.\n    for(const message of parsed)if(!seen.has(message.id)){seen.add(message.id);messages.push({...message,turnId:turn.id,turnStatus:turn.status});}\n  }\n  // Bound cross-task retention, without truncating the returned conversation.\n  while(cache.size>500)cache.delete(cache.keys().next().value);\n  return messages;","sourceCodeStart":422,"sourceCodeEnd":458,"githubUrl":"https://github.com/BigPizzaV3/CodexPlusPlus/blob/b1ed92e5e4a2d74095d4b8db5af43cef7acba9c6/tools/conversation-canvas/public/canvas.user.js#L422-L458","documentation":"Only userMessage/agentMessage items are imported, and each must have a stable string 'id' because it is used as the dedup/message key passed to parseMessage. An item lacking a string id cannot be anchored in the canvas, so the script throws.","triggerScenarios":"A page row of type userMessage or agentMessage whose item.id is missing or not a string — schema drift in the items payload, or a synthesized/placeholder item from a Codex version change.","commonSituations":"Codex update renamed id to itemId or moved it; items created by a different client version without ids; corrupted thread store entries.","solutions":["Update canvas.user.js to the current Codex-compatible version.","Log the offending row to identify the new id field name and adjust the extraction (e.g. row.id ?? item.id).","Skip id-less items with a warning instead of aborting the import.","Rebuild the thread's cached pages and retry after an app reload."],"exampleFix":"// before\nif(typeof item.id!=='string')throw Error('历史消息缺少稳定 ID');\n// after\nconst id=item.id??row.id;\nif(typeof id!=='string'){console.warn('skip item without id',item);continue;}","handlingStrategy":"type-guard","validationCode":"const badItems=page.data.filter(r=>['userMessage','agentMessage'].includes((r.item??r)?.type)&&typeof (r.item??r)?.id!=='string');\nif(badItems.length)console.warn('items without stable id will be skipped',badItems.length);","typeGuard":"const hasStableId=item=>item!=null&&typeof item.id==='string';","tryCatchPattern":"try{await importTurnItems(turn);}catch(e){if(e.message==='历史消息缺少稳定 ID'){return importTurnItems(turn,{skipIdless:true});}throw e;}","preventionTips":["Fall back to row.id when item.id is absent","Deduplicate by multiple key candidates (id/itemId/messageId)","Skip-and-log instead of abort for display-only imports","Diff item schema after each Codex update"],"tags":["schema-mismatch","identifier","history-import"],"backgroundTag":"missing-required-argument","analyzedSha":"b1ed92e5e4a2d74095d4b8db5af43cef7acba9c6","analyzedAt":"2026-09-19T23:35:21.129Z","contentChangedAt":"2026-09-19T23:35:21.129Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}