Refactor-Nested-Ternary-Readable

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 refactor, rationale, tests. Refactor a nested ternary chain (three levels deep) that maps a status code to a label string into an equivalent if/else block. Do not change the return values or the conditions evaluated.

{
  "metrics": {
    "visible": {
      "checks": [
        {
          "contains": [
            "if"
          ]
        },
        {
          "contains": [
            "else"
          ]
        },
        {
          "contains": [
            "ternary"
          ]
        }
      ]
    },
    "hidden": {
      "checks": [
        {
          "contains": [
            "same output"
          ]
        },
        {
          "contains": [
            "all branches"
          ]
        },
        {
          "contains": [
            "no logic change"
          ]
        }
      ]
    },
    "intent": {
      "checks": [
        {
          "contains": [
            "readability"
          ]
        },
        {
          "contains": [
            "reduce cognitive load"
          ]
        },
        {
          "contains": [
            "maintainability"
          ]
        }
      ]
    }
  }
}