The country wall passed no records, so each of its 175 cards offered only the poster and said the
prayer list was "coming soon", while the people groups were one request away. library/lists/
peopleGroupRecords.js is the records half of the print standard: one people-groups fetch per language
(normalised the way the prints read rows, list membership applied), then a SELECTOR picks the set — a
country by ISO3, explicit slugs, any field, or a host's own selector language. A selector nobody
understands selects nothing rather than every group on earth, and a failed fetch is not cached.
The country wall uses it by ISO3, so every country now prints the list, the deck (all five stocks) and
the full or lightweight packet. The packet's page 1 is, for now, the country's stored poster when it is
really there; the in-browser map generator will replace that.
check:people-group-records asserts the selection two-sided with an injected fetch; registered in
gates:pre.
