- Service with embedded locale files (en, de)
- Auto-detect system language from LANG/LC_* env vars
- Template support for interpolation and pluralization
- Extensible: GUI can load additional translations via LoadFS()
- Global default service with T() shorthand
- Thread-safe with sync.RWMutex
Designed to be extended by core-gui which can import this
package and add GUI-specific translations on top.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>