**Motivations:**
- Missing translations for language settings in public locale files
- settings.language.title, settings.language.description, settings.language.french, and settings.language.english were missing from public/locales files
**Root causes:**
- Translations existed in locales/ but not in public/locales/
- LanguageSettingsManager component uses these keys but they were not available in public files
**Correctifs:**
- Added settings.language.title=Langue de préférence in public/locales/fr.txt
- Added settings.language.description=Choisissez votre langue préférée pour l'interface in public/locales/fr.txt
- Added settings.language.loading=Chargement... in public/locales/fr.txt
- Added settings.language.french=Français in public/locales/fr.txt
- Added settings.language.english=Anglais in public/locales/fr.txt
- Added settings.language.title=Preferred Language in public/locales/en.txt
- Added settings.language.description=Choose your preferred language for the interface in public/locales/en.txt
- Added settings.language.loading=Loading... in public/locales/en.txt
- Added settings.language.french=French in public/locales/en.txt
- Added settings.language.english=English in public/locales/en.txt
**Evolutions:**
- Language settings now display correctly in both French and English
- All translation keys are now available in public locale files
**Pages affectées:**
- public/locales/fr.txt
- public/locales/en.txt
**Motivations:**
- User requested spinner during cache update and page reload after completion
- Better UX: visual feedback during update and automatic refresh to show updated data
**Root causes:**
- No visual spinner during cache update operation
- Page was not reloaded after cache update, requiring manual refresh
**Correctifs:**
- Added Spinner component with CSS animation
- Modified button to show spinner during update
- Added page reload using router.reload() after successful cache update
- Wait 1 second after success message before reloading to show feedback
**Evolutions:**
- Better user experience with visual feedback during cache update
- Automatic page reload ensures updated data is displayed immediately
- Spinner provides clear indication that operation is in progress
**Pages affectées:**
- components/CacheUpdateManager.tsx
