fix(wrappers): eliminar wrappers vacíos y corregir exclusiones AdSense (Plan 99.15)

## Problema
- Componentes deshabilitados/excluidos dejaban wrappers HTML vacíos
  (navbar 32px, sidebar col-lg-3 294px)
- AdSense ignoraba exclusiones por URL pattern en grupo _exclusions

## Solución Plan 99.15 (Clean Architecture)

### Domain Layer
- WrapperVisibilityCheckerInterface: contrato para verificar visibilidad

### Application Layer
- CheckWrapperVisibilityUseCase: orquesta verificaciones de visibilidad

### Infrastructure Layer
- WordPressComponentVisibilityRepository: consulta BD + PageVisibilityHelper
- WrapperVisibilityService: facade estático para templates
- BodyClassHooksRegistrar: agrega clases CSS failsafe al body

### Templates modificados
- header.php: renderizado condicional de <nav> wrapper
- page.php/single.php: lógica dinámica col-lg-9/col-lg-12 según sidebar

### CSS Failsafe
- css-global-utilities.css: reglas body.roi-hide-* como respaldo

## Fix AdSense (Inc/adsense-placement.php)
- Agregado PageVisibilityHelper::shouldShow() a todas las funciones:
  roi_render_ad_slot, roi_render_rail_ads, roi_enqueue_adsense_script,
  roi_inject_content_ads, roi_render_anchor_ads, roi_render_vignette_ad,
  roi_enqueue_anchor_vignette_scripts

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

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

Inc/adsense-placement.php

@@ -25,6 +25,8 @@ if (!defined('ABSPATH')) {
     exit;
 }
 
+use ROITheme\Shared\Infrastructure\Services\PageVisibilityHelper;
+
 /**
  * Renderiza un slot de anuncio en una ubicacion
  *
@@ -52,11 +54,16 @@ function roi_render_ad_slot(string $location): string
             return '';
         }
 
-        // Verificar exclusiones
+        // Verificar exclusiones legacy (forms group)
         if (roi_is_ad_excluded($settings)) {
             return '';
         }
 
+        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
+        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
+            return '';
+        }
+
         // Obtener renderer desde DIContainer (DIP compliant)
         $renderer = $container->getAdsensePlacementRenderer();
 
@@ -143,11 +150,16 @@ function roi_render_rail_ads(): string
             return '';
         }
 
-        // Verificar exclusiones
+        // Verificar exclusiones legacy (forms group)
         if (roi_is_ad_excluded($settings)) {
             return '';
         }
 
+        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
+        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
+            return '';
+        }
+
         // Obtener renderer desde DIContainer (DIP compliant)
         $renderer = $container->getAdsensePlacementRenderer();
 
@@ -193,6 +205,11 @@ function roi_enqueue_adsense_script(): void
             return;
         }
 
+        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
+        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
+            return;
+        }
+
         $publisherId = $settings['content']['publisher_id'] ?? '';
         if (empty($publisherId)) {
             return;
@@ -246,11 +263,16 @@ function roi_inject_content_ads(string $content): string
             return $content;
         }
 
-        // Verificar exclusiones
+        // Verificar exclusiones legacy (forms group)
         if (roi_is_ad_excluded($settings)) {
             return $content;
         }
 
+        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
+        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
+            return $content;
+        }
+
         $renderer = $container->getAdsensePlacementRenderer();
 
         // Inyectar anuncio al inicio (post-top)
@@ -446,11 +468,16 @@ function roi_render_anchor_ads(): string
             return '';
         }
 
-        // Verificar exclusiones
+        // Verificar exclusiones legacy (forms group)
         if (roi_is_ad_excluded($settings)) {
             return '';
         }
 
+        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
+        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
+            return '';
+        }
+
         // Obtener renderer desde DIContainer (DIP compliant)
         $renderer = $container->getAdsensePlacementRenderer();
 
@@ -490,11 +517,16 @@ function roi_render_vignette_ad(): string
             return '';
         }
 
-        // Verificar exclusiones
+        // Verificar exclusiones legacy (forms group)
         if (roi_is_ad_excluded($settings)) {
             return '';
         }
 
+        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
+        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
+            return '';
+        }
+
         // Obtener renderer desde DIContainer (DIP compliant)
         $renderer = $container->getAdsensePlacementRenderer();
 
@@ -556,6 +588,11 @@ function roi_enqueue_anchor_vignette_scripts(): void
             return;
         }
 
+        // Verificar exclusiones modernas (Plan 99.11: _exclusions, _page_visibility)
+        if (!PageVisibilityHelper::shouldShow('adsense-placement')) {
+            return;
+        }
+
         // Encolar script
         wp_enqueue_script(
             'roi-anchor-vignette',