add /countries index grouped by WAGF region and /countries/[country] pages
derive countries from prayer API (slug, count, map center/zoom) via config/countries-meta and /api/countries
prerender country routes for all locales via modules/country-routes
add CountryMap component: highlight focus country, brand-green in-country pins, muted border pins, popups
show bold green note above the map stating people-group count
lock UupgsList to a country and link card country names to country pages
add i18n keys for the new strings
