fix(exclusions): Corregir Renderers que ignoraban sistema de exclusiones

Plan 99.11 - Correcciones críticas:

- FooterRenderer: Añadir PageVisibilityHelper::shouldShow()
- HeroSectionRenderer: Añadir PageVisibilityHelper::shouldShow()
- AdsensePlacementRenderer: Añadir PageVisibilityHelper::shouldShow()

Mejoras adicionales:
- UrlPatternExclusion: Soporte wildcards (*sct* → regex)
- ExclusionFormPartial: UI mejorada con placeholders
- ComponentConfiguration: Grupo _exclusions validado
- 12 FormBuilders: Integración UI de exclusiones
- 12 FieldMappers: Mapeo campos de exclusión

Verificado: Footer oculto en post con categoría excluida SCT

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

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

Shared/Infrastructure/Persistence/WordPress/WordPressComponentSettingsRepository.php

@@ -109,28 +109,67 @@ final class WordPressComponentSettingsRepository implements ComponentSettingsRep
 
     /**
      * {@inheritDoc}
+     *
+     * Implementa UPSERT: si el registro no existe, lo crea; si existe, lo actualiza.
+     * Esto es necesario para grupos especiales como _page_visibility y _exclusions
+     * que no vienen del schema JSON.
      */
     public function saveFieldValue(string $componentName, string $groupName, string $attributeName, mixed $value): bool
     {
         // Serializar valor
         $serializedValue = $this->serializeValue($value);
 
-        // Intentar actualizar
-        $result = $this->wpdb->update(
-            $this->tableName,
-            ['attribute_value' => $serializedValue],
-            [
-                'component_name' => $componentName,
-                'group_name' => $groupName,
-                'attribute_name' => $attributeName
-            ],
-            ['%s'],
-            ['%s', '%s', '%s']
-        );
+        // Verificar si el registro existe
+        $exists = $this->fieldExists($componentName, $groupName, $attributeName);
+
+        if ($exists) {
+            // UPDATE
+            $result = $this->wpdb->update(
+                $this->tableName,
+                ['attribute_value' => $serializedValue],
+                [
+                    'component_name' => $componentName,
+                    'group_name' => $groupName,
+                    'attribute_name' => $attributeName
+                ],
+                ['%s'],
+                ['%s', '%s', '%s']
+            );
+        } else {
+            // INSERT - crear nuevo registro
+            $result = $this->wpdb->insert(
+                $this->tableName,
+                [
+                    'component_name' => $componentName,
+                    'group_name' => $groupName,
+                    'attribute_name' => $attributeName,
+                    'attribute_value' => $serializedValue
+                ],
+                ['%s', '%s', '%s', '%s']
+            );
+        }
 
         return $result !== false;
     }
 
+    /**
+     * Verifica si un campo existe en la BD
+     */
+    private function fieldExists(string $componentName, string $groupName, string $attributeName): bool
+    {
+        $sql = $this->wpdb->prepare(
+            "SELECT COUNT(*) FROM {$this->tableName}
+             WHERE component_name = %s
+               AND group_name = %s
+               AND attribute_name = %s",
+            $componentName,
+            $groupName,
+            $attributeName
+        );
+
+        return (int) $this->wpdb->get_var($sql) > 0;
+    }
+
     /**
      * {@inheritDoc}
      */