fix: remplacer couleurs emerald/green fluo par couleurs brand dans les paramètres

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

memento-note/app/(main)/settings/data/page.tsx

@@ -183,8 +183,8 @@ export default function DataSettingsPage() {
     },
     {
       icon: Upload,
-      iconColor: 'text-emerald-600 dark:text-emerald-400',
-      iconBg: 'bg-emerald-500/10 dark:bg-emerald-500/20',
+      iconColor: 'text-primary/80 dark:text-primary',
+      iconBg: 'bg-primary/10 dark:bg-primary/20',
       title: t('dataManagement.import.title'),
       description: t('dataManagement.import.description'),
       loading: isImporting,