{
  "failure": "main audit completed simulations and numerical regression, then matplotlib import failed",
  "recovery": "rendered saved events in an isolated temporary plotting environment; no simulations repeated",
  "runtime_environment_modified": false,
  "versions": {
    "matplotlib": "3.10.7",
    "numpy": "2.2.6",
    "pandas": "2.3.3",
    "pyarrow": "25.0.1"
  }
}