auto-claude: subtask-1-3 - Document how to add new translation keys
Added comprehensive documentation for adding translation keys:
- Step-by-step guide with namespace identification
- Detailed JSON structure explanation with real examples
- Namespace organization patterns (meta, common, navigation, pages, etc.)
- Code examples using useTranslations() hook
- Advanced usage: dynamic keys, string interpolation, rich content
- Best practices for key naming and structure consistency
- Examples for arrays, objects, and nested translations
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>