The design rationale cited "Opus 4.6+" as the class of models capable of
holistic checklist judgment. That reference predates the Claude 5 families
(Opus 5, Sonnet 5, Fable 5), so readers on current models can't tell whether
the guidance still applies to them.
Widens the parenthetical to name the Claude 5 families explicitly. Applied
across all four locale copies (en, ja-JP, tr, zh-CN) to keep translations in
sync. Documentation wording only; no behavioral change.
