This commit adapts the application's source code to the newly restructured and renamed translation files. It ensures all UI text is correctly referenced and improves how feedback messages are handled.
- Updated all translation keys throughout the source code to align with the new nested structure.
- Added and corrected translations for user-facing toasts to provide appropriate success and failure feedback (e.g., for import/export actions).
- Implemented logic to display newly added translations where they were previously missing.