fix: mejorar detección de pérdida de autenticación con Authentik

- Detectar errores "Failed to fetch" y "no response" como pérdida de auth
- Mejor logging para debugging de cambios de estado
- Manejar correctamente redirects 302 de Authentik en fetch

components/AuthIndicator.client.vue

@@ -66,8 +66,16 @@ watch(() => musicStore.error, (error, oldError) => {
   if (error && error !== oldError) {
     console.log('[AuthIndicator] Music store error detected:', error)
 
-    if (error.includes('401') || error.includes('403') ||
-        error.includes('Unauthorized') || error.includes('Forbidden')) {
+    // Detectar errores de autenticación (múltiples formas)
+    const isAuthError =
+      error.includes('401') ||
+      error.includes('403') ||
+      error.includes('Unauthorized') ||
+      error.includes('Forbidden') ||
+      error.includes('Failed to fetch') || // Authentik redirect genera esto
+      error.includes('no response')        // Nuxt $fetch sin respuesta
+
+    if (isAuthError) {
       // Auth error detected - mark as unauthenticated immediately
       console.log('[AuthIndicator] Auth error detected, updating status')
       markUnauthenticated()
@@ -80,8 +88,15 @@ watch(() => musicStore.loading, (loading, wasLoading) => {
   if (wasLoading && !loading && musicStore.error) {
     // Terminó de cargar con error, verificar si es de auth
     const error = musicStore.error
-    if (error.includes('401') || error.includes('403') ||
-        error.includes('Unauthorized') || error.includes('Forbidden')) {
+    const isAuthError =
+      error.includes('401') ||
+      error.includes('403') ||
+      error.includes('Unauthorized') ||
+      error.includes('Forbidden') ||
+      error.includes('Failed to fetch') ||
+      error.includes('no response')
+
+    if (isAuthError) {
       markUnauthenticated()
     }
   }