Debug-Shared-Abort-Controller-V2

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 diagnosis, fix, tests. A request helper stores one AbortController in module scope, so cancelling one request aborts unrelated in-flight requests. Identify the bug and fix.

{
  "metrics": {
    "repro": {
      "checks": [
        {
          "contains": [
            "cancel one"
          ]
        },
        {
          "contains": [
            "unrelated"
          ]
        },
        {
          "contains": [
            "in-flight"
          ]
        },
        {
          "contains": [
            "AbortController"
          ]
        }
      ]
    },
    "hidden": {
      "checks": [
        {
          "contains": [
            "per request"
          ]
        },
        {
          "contains": [
            "scope"
          ]
        },
        {
          "contains": [
            "finally cleanup"
          ]
        }
      ]
    },
    "diagnose": {
      "checks": [
        {
          "contains": [
            "shared"
          ]
        },
        {
          "contains": [
            "module scope"
          ]
        },
        {
          "contains": [
            "abort"
          ]
        }
      ]
    }
  }
}