fix: tema defecto claro

Author: AlejandroFeriaGonzalez

frontend/index.html

@@ -7,7 +7,7 @@
     <title>Suria</title>
     <script>
       // Cargar tema antes de renderizar para evitar flash
-      const theme = localStorage.getItem('theme') || 'dark';
+      const theme = localStorage.getItem('theme') || 'corporate';
       document.documentElement.setAttribute('data-theme', theme);
     </script>
   </head>