feat: migrar a useAuthentik y configurar CI/CD con Gitea Actions

- Migrar de useAuth() a useAuthentik() para autenticación SSR
- Actualizar componentes UserMenu, AppSidebar y profile.vue
- Configurar docker-compose.yml con variables dinámicas
- Agregar Gitea Actions workflow para build y deploy automático
- Implementar hook de monitoreo de Gitea Actions
- Configurar secrets y variables para deploy seguro
- Actualizar configuración de Traefik con Authentik Forward Auth

nuxt4-app/app/components/UserMenu.vue

@@ -1,17 +1,12 @@
 <script setup lang="ts">
-const { user, loading, fetchUser, logout } = useAuth()
+const { user, isAuthenticated, logout, goToProfile } = useAuthentik()
 
 // Estado para el dropdown
 const isOpen = ref(false)
 
-// Cargar usuario al montar
-onMounted(() => {
-  fetchUser()
-})
-
 // Computed para el avatar del usuario con gradiente dinámico
 const userAvatar = computed(() => ({
-  src: user.value?.avatar_url || `https://ui-avatars.com/api/?name=${encodeURIComponent(user.value?.name || user.value?.username || 'User')}&background=random&bold=true&format=svg`,
+  src: user.value?.avatar || `https://ui-avatars.com/api/?name=${encodeURIComponent(user.value?.name || user.value?.username || 'User')}&background=random&bold=true&format=svg`,
   alt: user.value?.name || user.value?.username || 'User'
 }))
 
@@ -72,7 +67,7 @@ const items = computed(() => [
 
 <template>
   <UDropdownMenu
-    v-if="user?.authenticated && !loading"
+    v-if="isAuthenticated"
     v-model:open="isOpen"
     :items="items"
     :ui="{
@@ -194,18 +189,4 @@ const items = computed(() => [
       </div>
     </template>
   </UDropdownMenu>
-
-  <div
-    v-else-if="loading"
-    class="relative"
-  >
-    <USkeleton
-      class="h-9 w-9"
-      :ui="{
-        rounded: 'rounded-full',
-        background: 'bg-gradient-to-br from-gray-200 to-gray-300 dark:from-gray-700 dark:to-gray-800'
-      }"
-    />
-    <div class="absolute inset-0 rounded-full bg-gradient-to-br from-primary-500/20 to-transparent animate-pulse" />
-  </div>
 </template>