{
  "version": "comeshop-ai-watch.test-target.v1",
  "domainId": "T19",
  "acceptanceCriterion": "T19-AC-06",
  "criterionText": "HTTP 304／429／5xx",
  "criterionProvenance": {
    "kind": "quoted",
    "doc": "docs/2026-08-30/82_comeshop-ai-watch-top-10-next-41-50-detailed-requirements-specifications_20260830T220000+0800_v01.md §8 T19：官方匯率與歷史資料 revision"
  },
  "expected": "degraded",
  "observed": {
    "fx": {
      "pair": "USD/TWD",
      "base": "USD",
      "quote": "TWD",
      "rateType": "official_fixing",
      "publishedAt": "2026-09-04T16:00:00.000Z",
      "retrievedAt": "2026-09-05T00:05:00.000Z",
      "source": "CBC",
      "decimalScale": "6",
      "confidence": "0.99"
    }
  },
  "absent": [
    "fx.revisionOf"
  ],
  "unreadable": [
    "fx.rate",
    "fx.effectiveDate"
  ]
}