Refactor event handling and user management: Replace direct database calls with service layer methods for events, user profiles, and preferences, enhancing code organization and maintainability. Update API routes to utilize new services for event registration, feedback, and user statistics, ensuring a consistent approach across the application.

app/api/preferences/route.ts

@@ -1,12 +1,10 @@
 import { NextResponse } from "next/server";
-import { prisma } from "@/lib/prisma";
+import { sitePreferencesService } from "@/services/preferences/site-preferences.service";
 
 export async function GET() {
   try {
     // Récupérer les préférences globales du site (pas besoin d'authentification)
-    let sitePreferences = await prisma.sitePreferences.findUnique({
-      where: { id: "global" },
-    });
+    const sitePreferences = await sitePreferencesService.getSitePreferences();
 
     // Si elles n'existent pas, retourner des valeurs par défaut
     if (!sitePreferences) {