Expand i18n support with professional translations for:
- Chinese (Simplified) - zh.json
- Japanese - ja.json
- Korean - ko.json
- Italian - it.json
- Dutch - nl.json
API now supports 10 languages: en, es, fr, de, pt, zh, ja, ko, it, nl
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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