feat(visibility): añadir opción "Ocultar para usuarios logueados" (Plan 99.16)

- Crear UserVisibilityHelper centralizado en Shared/Infrastructure/Services
- Añadir campo hide_for_logged_in en schemas de 4 componentes
- Integrar validación en Renderers: TopBar, LetsTalk, CTASidebar, CTAPost
- Añadir checkbox UI en FormBuilders de los 4 componentes
- Refactorizar adsense-placement.php para usar el helper centralizado
- Deprecar función roi_should_hide_for_logged_in() (backwards compatible)

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

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

Public/CtaPost/Infrastructure/Ui/CtaPostRenderer.php

@@ -7,6 +7,7 @@ use ROITheme\Shared\Domain\Contracts\RendererInterface;
 use ROITheme\Shared\Domain\Contracts\CSSGeneratorInterface;
 use ROITheme\Shared\Domain\Entities\Component;
 use ROITheme\Shared\Infrastructure\Services\PageVisibilityHelper;
+use ROITheme\Shared\Infrastructure\Services\UserVisibilityHelper;
 
 /**
  * CtaPostRenderer - Renderiza CTA promocional debajo del contenido
@@ -41,6 +42,11 @@ final class CtaPostRenderer implements RendererInterface
             return '';
         }
 
+        // Validar visibilidad por usuario logueado
+        if (!UserVisibilityHelper::shouldShowForUser($data['visibility'] ?? [])) {
+            return '';
+        }
+
         $css = $this->generateCSS($data);
         $html = $this->buildHTML($data);