Limpieza de peso de imágenes

lib/pantallas/pantalla_fin_partida_online.dart

@@ -209,24 +209,20 @@ class _PantallaFinPartidaOnlineState extends State<PantallaFinPartidaOnline> {
                 ),
               ),
             const SizedBox(height: 24),
-            SizedBox(
-              width: double.infinity,
-              height: 56,
-              child: OutlinedButton.icon(
-                onPressed: () async {
-                  await context.read<ServicioNearby>().desconectar();
-                  if (!context.mounted) return;
-                  Navigator.pushAndRemoveUntil(
-                    context,
-                    MaterialPageRoute(
-                      builder: (_) => const PantallaPrincipal(),
-                    ),
-                    (route) => false,
-                  );
-                },
-                icon: const Icon(Icons.home),
-                label: Text(l10n.mainMenu),
-              ),
+            BotonFarolero.oscuro(
+              texto: l10n.mainMenu,
+              icono: Icons.home,
+              onPressed: () async {
+                await context.read<ServicioNearby>().desconectar();
+                if (!context.mounted) return;
+                Navigator.pushAndRemoveUntil(
+                  context,
+                  MaterialPageRoute(
+                    builder: (_) => const PantallaPrincipal(),
+                  ),
+                  (route) => false,
+                );
+              },
             ),
           ],
           ),
@@ -277,7 +273,7 @@ class _ResultadoOnlineHero extends StatelessWidget {
       child: Column(
         children: [
           Image.asset(
-            'assets/ui/generated/final_rewards/cinematic_burst.png',
+            'assets/ui/generated/final_rewards/cinematic_burst.webp',
             height: 250,
             fit: BoxFit.contain,
             opacity: const AlwaysStoppedAnimation(0.95),