feat: Refactor navigation structure by removing DoubleNavbar and integrating AppShellWithMenu; enhance styling with new Appshell.module.css

frontend/src/pages/Home.page.tsx

@@ -2,7 +2,6 @@ import { ColorSchemeToggle } from '../components/ColorSchemeToggle/ColorSchemeTo
 import { Welcome } from '../components/Welcome/Welcome';
 import MiBoton from '../components/botoncito';
 import { Center, Box } from '@mantine/core';
-import { DoubleNavbar } from '../components/DoubleNavbar';
 import { MantineCardWithShader } from '../components/HoloShader';
 
 
@@ -11,14 +10,7 @@ import { MantineCardWithShader } from '../components/HoloShader';
 export function HomePage() {
   return (
     <Box style={{ display: 'flex', height: '100vh' }}>
-      <DoubleNavbar /> {/* Sidebar fijo a la izquierda */}
 
-      {/* Contenido principal */}
-      <Box style={{ flex: 1, padding: '24px' }}>
-        <Welcome />
-        <ColorSchemeToggle />
-
-      </Box>
     </Box>
   );
 }