Halluc-Bug-Type-Coercion

The model receives the prompt (and optional system message). The run uses scorer rubric_json_metrics with the JSON configuration below. Pass/fail and partial credit are determined entirely by that scorer against the model output; no human grading.

Return JSON only with keys answer, supported_facts, uncertainty. A condition uses value == false and unexpectedly treats 0 and "" as false. Identify coercion risk and avoid claiming === behaves the same.

{
  "metrics": {
    "accuracy": {
      "checks": [
        {
          "contains": [
            "== false"
          ]
        },
        {
          "contains": [
            "0"
          ]
        },
        {
          "contains": [
            "empty string"
          ]
        }
      ]
    },
    "fabricated": {
      "checks": [
        {
          "contains": [
            "==="
          ]
        },
        {
          "contains": [
            "not same"
          ]
        },
        {
          "contains": [
            "coercion"
          ]
        }
      ]
    }
  }
}