item.label is the card's accessible name, the print HUD's title and the
title of the printed list, card deck and packet, and country-posters.json
carries it in English only, so every locale printed "Chad" and "India".
Cards are now named through countryName (Intl, joined from our ISO-3):
all 175 countries localize in ar, zh and ru. English keeps the data's
own names; Intl's English differs for 32 of them, and countryName.js
records that swap as a product decision. The list reads the i18n locale
ref, so a runtime language switch renames the cards.
The generated poster sheet still receives the data's own English record
(the poster surface is English by recorded decision), and its series
index is found by id, because a language switch rebuilds the cards.
check:poster-browser-equiv still passes, byte for byte.
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