Debug-Rate-Limiter-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 sliding-window rate limiter includes timestamps exactly at the cutoff and returns incorrect allow/deny output at window boundaries. Diagnose and fix.

{
  "metrics": {
    "repro": {
      "checks": [
        {
          "contains": [
            "boundary"
          ]
        },
        {
          "contains": [
            "cutoff"
          ]
        },
        {
          "contains": [
            "timestamp"
          ]
        },
        {
          "contains": [
            "incorrect"
          ]
        }
      ]
    },
    "hidden": {
      "checks": [
        {
          "contains": [
            ">"
          ]
        },
        {
          "contains": [
            "filter"
          ]
        },
        {
          "contains": [
            "window"
          ]
        }
      ]
    },
    "diagnose": {
      "checks": [
        {
          "contains": [
            "sliding"
          ]
        },
        {
          "contains": [
            "rate limiter"
          ]
        },
        {
          "contains": [
            "off by one"
          ]
        }
      ]
    }
  }
}