feat: Ajustar la visibilidad del encabezado y el espacio en dispositivos móviles

src/server/views/pages/dashboard.ejs

@@ -3,7 +3,7 @@
   <div class="relative flex justify-center">
     <% if (!selectedGuild) { %>
       <!-- Centered logo + selection card to match mock -->
-      <div class="flex flex-col items-center justify-start">
+  <div class="hidden md:flex flex-col items-center justify-start">
         <!-- logo area -->
         <div class="mt-10 mb-6">
           <!-- reuse small logo SVG -->

src/server/views/partials/dashboard_nav.ejs

@@ -1,4 +1,4 @@
-<header class="w-full p-2 fixed top-0 left-0 right-0 z-30">
+<header class="hidden md:block w-full p-2 fixed top-0 left-0 right-0 z-30">
   <div class="max-w-7xl mx-auto flex items-center justify-between px-3">
     <div class="flex items-center gap-4">
       <!-- hamburger for mobile to toggle sidebar/drawer -->
@@ -61,7 +61,7 @@
   </div>
 </header>
 
-<div style="height:56px"></div>
+<div class="hidden md:block" style="height:56px"></div>
 
 <script>
   (function(){