refactor: review cookie code for auth

app/api/auth/logout/route.ts

@@ -1,4 +1,6 @@
 import { NextResponse } from "next/server";
+import { AuthService } from "@/services";
+
 
 export async function POST() {
   try {
@@ -8,14 +10,8 @@ export async function POST() {
       { status: 200 }
     );
 
-    // Supprimer le cookie de session
-    response.cookies.set("session_token", "", {
-      httpOnly: true,
-      secure: process.env.NODE_ENV === "production",
-      sameSite: "lax",
-      maxAge: 0, // Expire immédiatement
-      path: "/",
-    });
+    // Supprimer la session et le cookie
+    AuthService.removeSession(response);
 
     return response;
   } catch (error) {