{"runId":"itemlist-doubled-best:2026-05-30T02-20-59-634Z","defectClass":"itemlist-doubled-best","createdAt":"2026-05-30T02:20:59.634Z","samples":[{"kvKey":"cat-play-tunnels-for-senior-cats-buying-guide:best-cat-play-tunnels-for-senior-cats-buying-guide","findingTimestamp":"2026-05-30T02:20:58.858Z","snapshotKey":"cat-play-tunnels-for-senior-cats-buying-guide:best-cat-play-tunnels-for-senior-cats-buying-guide-pre-editorial:"},{"kvKey":"cat-dental-water-additives-for-plaque-buying-guide:best-cat-dental-water-additives-for-plaque-buying-guide","findingTimestamp":"2026-05-29T23:30:07.987Z","snapshotKey":"cat-dental-water-additives-for-plaque-buying-guide:best-cat-dental-water-additives-for-plaque-buying-guide-pre-editorial:"},{"kvKey":"cat-insulated-carriers-for-winter-travel-buying-guide:best-cat-insulated-carriers-for-winter-travel-buying-guide","findingTimestamp":"2026-05-29T22:18:45.731Z","snapshotKey":"cat-insulated-carriers-for-winter-travel-buying-guide:best-cat-insulated-carriers-for-winter-travel-buying-guide-pre-editorial:"}],"successCriterion":{"perSample":[{"kind":"regex-must-not-match","id":"no-doubled-best-in-itemlist-name","pattern":"\"name\"\\s*:\\s*\"Best best\\b","flags":"i"},{"kind":"regex-must-not-match","id":"no-doubled-best-anywhere-in-html","pattern":"\\bBest best\\b","flags":""}],"passThreshold":{"samplesPassed":3,"of":3}},"rationale":{"no-doubled-best-in-itemlist-name":"JSON-LD ItemList.name with \"Best best ...\" is a doubled-prefix bug — Schema.org markup is crawler-visible and Google may penalize the rich-results card. Root cause: the ItemList builder unconditionally prepends \"Best \" even when the keyword already starts with \"best\".","no-doubled-best-anywhere-in-html":"Belt-and-suspenders: even outside JSON-LD, a literal \"Best best\" anywhere in the rendered HTML is a content-fingerprint bug that hurts perceived quality."}}