- Add i18n module with Locale enum, PO parser, and Accept-Language negotiation
- Create gettext .po translation files for en, es, de, ja, ko, id, fr, ru, pt, it, zh-Hant, zh-Hans, nl, ar
- Route HTML pages under /{lang}/ prefix using IETF language tags
- Auto-detect browser language and redirect from / to /{lang}/
- Add language selector dropdown in footer
- Localize geo names (country, city) from MMDB where available
- Add hreflang alternate links and multilingual sitemap for SEO
- Support RTL layout for Arabic
- Update integration tests for new routing structure
NetworkCats