Add dotenv package for environment variable management and update pnpm-lock.yaml. Adjust layout in RegisterPage and LoginPage components for improved responsiveness. Enhance AdminPanel with ChallengeManagement section and update navigation links for challenges. Refactor Prisma schema to include Challenge model and related enums.

app/api/users/route.ts

@@ -0,0 +1,39 @@
+import { NextResponse } from "next/server";
+import { auth } from "@/lib/auth";
+import { userService } from "@/services/users/user.service";
+
+export async function GET() {
+  try {
+    const session = await auth();
+
+    if (!session?.user?.id) {
+      return NextResponse.json({ error: "Vous devez être connecté" }, { status: 401 });
+    }
+
+    // Récupérer tous les utilisateurs (pour sélectionner qui défier)
+    const users = await userService.getAllUsers({
+      orderBy: {
+        username: "asc",
+      },
+      select: {
+        id: true,
+        username: true,
+        avatar: true,
+        score: true,
+        level: true,
+      },
+    });
+
+    // Filtrer l'utilisateur actuel
+    const otherUsers = users.filter((user) => user.id !== session.user.id);
+
+    return NextResponse.json(otherUsers);
+  } catch (error) {
+    console.error("Error fetching users:", error);
+    return NextResponse.json(
+      { error: "Erreur lors de la récupération des utilisateurs" },
+      { status: 500 }
+    );
+  }
+}
+