Cost-Analysis-Promise-Chain-Bug

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 benchmark, title, diagnosis, fix, done. Set benchmark to "cost", title to "Fix buggy promise chain returning unresolved value", and done to true. A function starts an async save inside then() but does not return it. Diagnose and fix.

{
  "metrics": {
    "strict": {
      "checks": [
        {
          "contains": [
            "cost"
          ]
        },
        {
          "contains": [
            "done"
          ]
        },
        {
          "contains": [
            "return promise"
          ]
        },
        {
          "contains": [
            "chain"
          ]
        },
        {
          "contains": [
            "await"
          ]
        }
      ]
    }
  }
}