- Split monolithic JSON files into feature-based modules
- Create common.json, home.json, admin.json for each language
- Add automatic assembly in locales/index.ts
- Add utility functions for translation management
- Update main.ts to use new modular structure
- Add comprehensive documentation in locales/README.md
- Remove old monolithic files (fr.json, en.json, fr_rev.json)

This modular approach simplifies maintenance and allows multiple
developers to work on different translation modules without conflicts.