Mejora de seguridad

frontend-client/src/routes/+layout.svelte

@@ -11,8 +11,8 @@
 
   let mounted = false;
 
-  onMount(() => {
-    auth.init();
+  onMount(async () => {
+    await auth.init();
     mounted = true;
   });
 
@@ -27,6 +27,12 @@
 </script>
 
 <div class="min-h-screen bg-gray-50 font-sans">
+  {#if !mounted}
+    <!-- Esperando inicialización de sesión -->
+    <div class="flex items-center justify-center min-h-screen bg-gray-50">
+      <div class="animate-spin rounded-full h-8 w-8 border-b-2 border-blue-600"></div>
+    </div>
+  {:else}
   {#if showHeader}
     <Header />
   {/if}
@@ -39,6 +45,7 @@
   <footer class="py-4 text-center border-t border-gray-200 bg-white">
     <p class="text-xs text-gray-400">ServiceManagerWeb v1.9.0 · © 2026 Aduanasoft</p>
   </footer>
+  {/if}
   
   <!-- Toast notifications -->
   {#each $toast.toasts as toastMessage (toastMessage.id)}