Translates every en.yml key into es.yml and ko.yml (918 keys each,
placeholder-parity verified), wires both into the drift/call-site test
(tests/i18n_keys.rs), and bundles a Hangul font subset (noto_kr_reg.otf,
~1.9MB, Noto Sans CJK KR Regular subset to Hangul + Jamo + Latin/CJK
punctuation) as a proportional/monospace fallback so Korean UI text
actually renders instead of showing tofu boxes. The Chinese font already
covers Han but not Hangul, which is a disjoint Unicode block.
Language registration itself needed no code changes: rust_i18n::i18n!
auto-discovers yml files in locales/, the locale-detection fallback in
setup_i18n already matches on bare subtags generically, and the language
picker iterates rust_i18n::available_locales!() and renders each
locale's own lang_name key (Espanol, and Hangul for Korean).
2ro
773589a2f1