fix: / redirects to /app (tenant) or /admin (central)

routes/web.php

@@ -5,7 +5,12 @@ use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Route;
 
 Route::get('/', function () {
-    return view('welcome');
+    // On a tenant subdomain → redirect to the tenant panel.
+    if (app(TenantManager::class)->isResolved()) {
+        return redirect('/app');
+    }
+    // On the central domain → redirect to admin.
+    return redirect('/admin');
 });
 
 // PWA — manifest dinamic per tenant.