Connectivity test: add a country list for your country

We ship country-focused connectivity lists (Iran, Russia, China, Brazil, India…) and we want more — but only a local knows which sites actually matter. If your country isn't covered yet (and doesn't have its own open issue, like #449 / #450 / #451) and you know its internet well, this issue is yours.

Same recipe as #405: pick an id and flag emoji for your country, ≥10 members mixing global services relevant locally with major domestic platforms, names in every full locale pack (en, zh, fr, pt-BR, ru), favicons committed via pnpm fetch-favicons. One country per PR.

pnpm check green; comment to claim your country (so two people don't build the same list); PR targets dev.