feat: Implement Telegram Bot and AI Settings

components/layout/Sidebar.tsx

@@ -7,6 +7,7 @@ import {
   PiggyBank,
   Bell,
   Lightbulb,
+  Settings,
   X,
 } from 'lucide-react';
 import Link from 'next/link';
@@ -25,6 +26,7 @@ const navigationItems = [
   { name: 'Tarjetas', href: '/cards', icon: CreditCard },
   { name: 'Presupuesto', href: '/budget', icon: PiggyBank },
   { name: 'Servicios', href: '/services', icon: Lightbulb },
+  { name: 'Configuración', href: '/settings', icon: Settings },
   { name: 'Alertas', href: '/alerts', icon: Bell, hasBadge: true },
 ];