Add database and Prisma configurations, enhance event and leaderboard components with API integration, and update navigation for session management

components/Navigation.tsx

@@ -1,9 +1,12 @@
 "use client";
 
 import Link from "next/link";
+import { useSession, signOut } from "next-auth/react";
 import PlayerStats from "./PlayerStats";
 
 export default function Navigation() {
+  const { data: session } = useSession();
+
   return (
     <nav className="w-full fixed top-0 left-0 z-50 px-8 py-3 bg-black/80 backdrop-blur-sm border-b border-gray-800/30">
       <div className="max-w-7xl mx-auto flex items-center justify-between">
@@ -39,11 +42,44 @@ export default function Navigation() {
           >
             LEADERBOARD
           </Link>
+          {session?.user?.role === "ADMIN" && (
+            <Link
+              href="/admin"
+              className="text-pixel-gold hover:text-orange-400 transition text-xs font-normal uppercase tracking-widest"
+            >
+              ADMIN
+            </Link>
+          )}
         </div>
 
-        {/* Player Stats - Right */}
-        <div>
-          <PlayerStats />
+        {/* Right Side */}
+        <div className="flex items-center gap-4">
+          {session ? (
+            <>
+              <PlayerStats />
+              <button
+                onClick={() => signOut()}
+                className="text-gray-400 hover:text-pixel-gold transition text-xs font-normal uppercase tracking-widest"
+              >
+                Déconnexion
+              </button>
+            </>
+          ) : (
+            <>
+              <Link
+                href="/login"
+                className="text-white hover:text-pixel-gold transition text-xs font-normal uppercase tracking-widest"
+              >
+                Connexion
+              </Link>
+              <Link
+                href="/register"
+                className="px-4 py-2 border border-pixel-gold/50 bg-black/60 text-white uppercase text-xs tracking-widest rounded hover:bg-pixel-gold/10 hover:border-pixel-gold transition"
+              >
+                Inscription
+              </Link>
+            </>
+          )}
         </div>
       </div>
     </nav>