- All 50 languages hardcoded in C source (no JSON parsing issues)
- Auto-detect Windows system locale via LOCALE_SISO639LANGNAME
- Full UI refresh on language switch (all menus rebuilt)
- Menu labels: File/Build/Language/Help all correct per language
- Covers: zh/en/ja/ko/es/fr/de/ru/pt/it/tr/ar/hi/th/vi/id/pl/nl/uk/cs/ro/sv/fi/da/no/el/he/ms/hu/sk/bg/hr/sr/sl/lt/lv/et/fa/bn/sw/ta/ml/te/ur/tl
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