feat: initialize project with Next.js, Prisma, and admin dashboard functionality

app/page.tsx

@@ -0,0 +1,48 @@
+import { prisma } from '@/lib/db';
+import { isConfigured } from '@/app/actions/setup';
+import { redirect } from 'next/navigation';
+import { MenuButton } from '@/components/MenuButton';
+import { ThemeToggle } from '@/components/ThemeToggle';
+
+export default async function Home() {
+  const configured = await isConfigured();
+
+  if (!configured) {
+    redirect('/setup');
+  }
+
+  const buttons = await prisma.button.findMany({
+    orderBy: { order: 'asc' },
+  });
+
+  return (
+    <main className="container">
+      <header style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '4rem' }}>
+        <h1 style={{ marginBottom: 0 }}>Application Menu</h1>
+        <ThemeToggle />
+      </header>
+
+      {buttons.length === 0 ? (
+        <div style={{ textAlign: 'center', marginTop: '4rem' }}>
+          <p style={{ opacity: 0.6 }}>Aucune application configurée. Rendez-vous dans le panel admin.</p>
+          <a href="/admin" style={{ color: 'var(--accent)', marginTop: '1rem', display: 'inline-block' }}>Accéder à l'administration</a>
+        </div>
+      ) : (
+        <div style={{ 
+          display: 'grid', 
+          gridTemplateColumns: 'repeat(auto-fill, minmax(240px, 1fr))', 
+          gap: '2.5rem' 
+        }}>
+          {buttons.map((btn: any) => (
+            <MenuButton 
+              key={btn.id} 
+              name={btn.name} 
+              url={btn.url} 
+              iconName="ExternalLink" 
+            />
+          ))}
+        </div>
+      )}
+    </main>
+  );
+}