refactor(adsense): remove dead code + PageSpeed CSS defer

- Remove unused roi_should_disable_auto_ads() function
- Remove enable_page_level_ads code (Auto Ads disabled in Google panel)
- Defer non-critical CSS with media=print pattern (Fase 4.2 PageSpeed)
- Fix roi-accessibility dependency: roi-theme-style -> roi-main-style

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Inc/enqueue-scripts.php

@@ -11,6 +11,56 @@ if (!defined('ABSPATH')) {
     exit;
 }
 
+/**
+ * CSS no críticos que se cargarán de forma diferida (Fase 4.2 PageSpeed)
+ *
+ * Estos CSS se cargan con media="print" y onload="this.media='all'"
+ * para evitar bloquear el renderizado inicial.
+ *
+ * @since 1.0.21
+ */
+define('ROI_DEFERRED_CSS', [
+    'roi-badges',
+    'roi-pagination',
+    'roi-generic-tables',
+    'roi-video',
+    'roi-animations',
+    'roi-youtube-facade',
+    'roi-tables-apu',
+]);
+
+/**
+ * Add async loading to deferred stylesheets (Fase 4.2 PageSpeed)
+ *
+ * Converts media="print" to media="all" after load to prevent render-blocking.
+ *
+ * @since 1.0.21
+ * @param string $html   The link tag HTML.
+ * @param string $handle The stylesheet handle.
+ * @return string Modified link tag.
+ */
+function roi_add_deferred_css_onload($html, $handle) {
+    if (!in_array($handle, ROI_DEFERRED_CSS, true)) {
+        return $html;
+    }
+
+    // Add onload attribute to switch media to "all" after load
+    $html = str_replace(
+        "media='print'",
+        "media='print' onload=\"this.media='all'\"",
+        $html
+    );
+
+    // Add noscript fallback for users without JavaScript
+    $href = preg_match('/href=[\'"]([^\'"]+)[\'"]/', $html, $matches) ? $matches[1] : '';
+    if ($href) {
+        $html .= '<noscript><link rel="stylesheet" href="' . esc_url($href) . '"></noscript>' . "\n";
+    }
+
+    return $html;
+}
+add_filter('style_loader_tag', 'roi_add_deferred_css_onload', 10, 2);
+
 /**
  * Enqueue typography system
  *
@@ -113,21 +163,23 @@ function roi_enqueue_fase2_styles() {
     // @see Public/Hero/Infrastructure/Ui/HeroRenderer.php
 
     // Category Badges CSS - Clase genérica (Issue #62)
+    // DIFERIDO: Fase 4.2 PageSpeed - media='print' + onload
     wp_enqueue_style(
         'roi-badges',
         get_template_directory_uri() . '/Assets/css/css-global-badges.css',
         array('roi-bootstrap'),
         filemtime(get_template_directory() . '/Assets/css/css-global-badges.css'),
-        'all'
+        'print' // Diferido para no bloquear renderizado
     );
 
     // Pagination CSS - Estilos personalizados (Issue #64)
+    // DIFERIDO: Fase 4.2 PageSpeed - below the fold
     wp_enqueue_style(
         'roi-pagination',
         get_template_directory_uri() . '/Assets/css/css-global-pagination.css',
         array('roi-bootstrap'),
         filemtime(get_template_directory() . '/Assets/css/css-global-pagination.css'),
-        'all'
+        'print' // Diferido para no bloquear renderizado
     );
 
     // Post Content Typography y Related Posts - DESHABILITADOS
@@ -232,12 +284,13 @@ function roi_enqueue_generic_tables() {
     }
 
     // Generic Tables CSS
+    // DIFERIDO: Fase 4.2 PageSpeed - below the fold
     wp_enqueue_style(
         'roi-generic-tables',
         get_template_directory_uri() . '/Assets/css/css-global-generic-tables.css',
         array('roi-bootstrap'),
         ROI_VERSION,
-        'all'
+        'print' // Diferido para no bloquear renderizado
     );
 }
 
@@ -256,12 +309,13 @@ function roi_enqueue_video_styles() {
     }
 
     // Video CSS
+    // DIFERIDO: Fase 4.2 PageSpeed - below the fold
     wp_enqueue_style(
         'roi-video',
         get_template_directory_uri() . '/Assets/css/css-global-video.css',
         array('roi-bootstrap'),
         ROI_VERSION,
-        'all'
+        'print' // Diferido para no bloquear renderizado
     );
 }
 
@@ -307,10 +361,11 @@ add_action('wp_enqueue_scripts', 'roi_enqueue_main_javascript', 11);
  */
 function roi_enqueue_accessibility() {
     // Accessibility CSS
+    // CORREGIDO: Fase 4.2 PageSpeed - dependencia 'roi-theme-style' no existía
     wp_enqueue_style(
         'roi-accessibility',
         get_template_directory_uri() . '/Assets/css/css-global-accessibility.css',
-        array('roi-theme-style'),
+        array('roi-main-style'), // Corregido: 'roi-theme-style' -> 'roi-main-style'
         ROI_VERSION,
         'all'
     );
@@ -384,12 +439,13 @@ function roi_enqueue_theme_styles() {
     // );
 
     // Theme Animations
+    // DIFERIDO: Fase 4.2 PageSpeed - mejoras visuales no críticas
     wp_enqueue_style(
         'roi-animations',
         get_template_directory_uri() . '/Assets/css/css-global-animations.css',
-        array('roi-bootstrap'), // Cambiado de 'roi-theme' a 'roi-bootstrap'
+        array('roi-bootstrap'),
         '1.0.0',
-        'all'
+        'print' // Diferido para no bloquear renderizado
     );
 
     // Theme Responsive Styles
@@ -436,12 +492,13 @@ add_action('wp_enqueue_scripts', 'roi_enqueue_theme_styles', 13);
  */
 function roi_enqueue_apu_tables_styles() {
     // APU Tables CSS
+    // DIFERIDO: Fase 4.2 PageSpeed - below the fold
     wp_enqueue_style(
         'roi-tables-apu',
         get_template_directory_uri() . '/Assets/css/css-tablas-apu.css',
         array('roi-bootstrap'),
         ROI_VERSION,
-        'all'
+        'print' // Diferido para no bloquear renderizado
     );
 }