- Added src/lib/i18n/metadata.ts with helper functions
- Updated [locale]/layout.tsx to use DEFAULT_LOCALE constant
- routing.ts already uses centralized SUPPORTED_LOCALES
Note: For full antifragility, a larger refactor would centralize
all hardcoded locale comparisons for metadata text fallbacks.
Currently adding a new language requires:
1. SUPPORTED_LOCALES in locales.ts
2. LOCALE_CONFIG entry
3. Translation keys in all message files
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