Debug-Timer-Cleanup-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 component schedules setInterval but never clears it, causing updates after teardown. Identify the lifecycle bug and fix.

{
  "metrics": {
    "repro": {
      "checks": [
        {
          "contains": [
            "setInterval"
          ]
        },
        {
          "contains": [
            "teardown"
          ]
        },
        {
          "contains": [
            "updates after"
          ]
        },
        {
          "contains": [
            "never clears"
          ]
        }
      ]
    },
    "hidden": {
      "checks": [
        {
          "contains": [
            "clearInterval"
          ]
        },
        {
          "contains": [
            "cleanup"
          ]
        },
        {
          "contains": [
            "unmount"
          ]
        }
      ]
    },
    "diagnose": {
      "checks": [
        {
          "contains": [
            "timer"
          ]
        },
        {
          "contains": [
            "lifecycle"
          ]
        },
        {
          "contains": [
            "leak"
          ]
        }
      ]
    }
  }
}