{
  "evidence_date": "2026-09-11",
  "user_screenshot": {
    "visible_toast": "网络请求出错",
    "visible_clock": "11:22",
    "event_date": "2026-09-10 (user confirmed yesterday)",
    "file_type": "unknown",
    "original_image_copied_to_repository": false
  },
  "simulation": {
    "scope": "actual requestError/showRequestError functions; mocked HTTP outcomes and timer; not production reproduction",
    "outcomes": [
      {
        "injected": "HTTP 413",
        "toast_order": [
          "文档上传失败",
          "网络请求出错"
        ]
      },
      {
        "injected": "HTTP 502",
        "toast_order": [
          "文档上传失败",
          "网络请求出错"
        ]
      },
      {
        "injected": "uploadFile:fail timeout",
        "toast_order": [
          "文档上传失败",
          "网络请求出错"
        ]
      }
    ],
    "overwrite_delay_ms": 10
  },
  "log_access": {
    "profile": "ai-nutrition-audit",
    "region": "cn-beijing",
    "mode": "readonly CLI GetLogs",
    "project_logstores": [
      "nginx-log-online/nginx-log-online",
      "ydysskz-log-online-liunx/ydysskz-log-online-liunx"
    ],
    "queries": [
      {
        "window": "2026-09-10 11:15–11:30 Asia/Shanghai",
        "query": "upload (nginx); business:aizhct + uri contains upload (application)",
        "matching_rows": 0
      },
      {
        "window": "2026-09-10 00:00–2026-09-11 00:00 Asia/Shanghai",
        "query": "application uri like '%aizhct.yyangpt.cn%'",
        "matching_rows": 3768
      },
      {
        "window": "2026-09-10 11:15–11:30 Asia/Shanghai",
        "query": "application target domain grouped by route/log_type",
        "result": "42条info记录，9个其他业务API路由，未匹配upload/image"
      },
      {
        "window": "2026-09-10 11:15–11:30 Asia/Shanghai",
        "query": "nginx referer matches either configured AI mini program appid grouped by status",
        "result": "21条，均HTTP 200；未匹配失败上传"
      },
      {
        "window": "2026-09-10 11:15–11:30 Asia/Shanghai",
        "query": "configured wafng and wafnew logstore total row counts",
        "result": "两个日志库均0；无覆盖证据，不等于WAF未拦截"
      }
    ],
    "interpretation": "日期已由用户确认；该时段有目标域名其他应用日志和小程序Referer正常请求，但未匹配失败上传事件。未证明上传请求采集完整性，不能以无记录断言未到服务器。"
  },
  "root_cause": "not established",
  "required_next_evidence": [
    "raw access/error log for upload service around 2026-09-10 11:22, or developer-tools upload HTTP/errMsg record",
    "file extension"
  ],
  "production_writes": false
}