Refactor-Error-Handling-Wrapper

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 plan, refactor, tests. Several async route handlers repeat try/catch blocks that map errors into the same JSON envelope. Refactor to a wrapper while preserving status codes.

{
  "metrics": {
    "intent": {
      "checks": [
        {
          "contains": [
            "try/catch"
          ]
        },
        {
          "contains": [
            "wrapper"
          ]
        },
        {
          "contains": [
            "JSON envelope"
          ]
        }
      ]
    },
    "visible": {
      "checks": [
        {
          "contains": [
            "async route handlers"
          ]
        },
        {
          "contains": [
            "status codes"
          ]
        },
        {
          "contains": [
            "error mapping"
          ]
        }
      ]
    },
    "hidden": {
      "checks": [
        {
          "contains": [
            "preserve status"
          ]
        },
        {
          "contains": [
            "tests"
          ]
        },
        {
          "contains": [
            "same response shape"
          ]
        }
      ]
    }
  }
}