Fix: Move composables and components into app/ directory

- Resolve SSR error "useAuthentik is not defined"
- Follow Nuxt 4 directory structure conventions
- When app/ exists, all app directories must be inside it
- This enables proper auto-import of composables

nuxt4/app/components/auth/ActionButtons.vue

@@ -0,0 +1,34 @@
+<template>
+  <UCard class="w-full">
+    <div class="flex flex-wrap gap-3">
+      <!-- Botón de perfil -->
+      <UButton
+        color="primary"
+        size="lg"
+        @click="goToProfile"
+      >
+        <template #leading>
+          <UIcon name="i-heroicons-user-circle" />
+        </template>
+        Ver Perfil
+      </UButton>
+
+      <!-- Botón de logout -->
+      <UButton
+        color="error"
+        size="lg"
+        variant="soft"
+        @click="logout"
+      >
+        <template #leading>
+          <UIcon name="i-heroicons-arrow-right-on-rectangle" />
+        </template>
+        Cerrar Sesión
+      </UButton>
+    </div>
+  </UCard>
+</template>
+
+<script setup lang="ts">
+const { logout, goToProfile } = useAuthentik()
+</script>