chore(php): add toc debug logging for guest visibility issue

Temporary debug logging to diagnose why TOC shows for logged users
but not for guests. Logs visibility checks at each layer.

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Shared/Application/UseCases/EvaluateComponentVisibility/EvaluateComponentVisibilityUseCase.php

@@ -36,9 +36,16 @@ final class EvaluateComponentVisibilityUseCase
      */
     public function execute(string $componentName): bool
     {
+        // DEBUG: Log for TOC only
+        $debugToc = ($componentName === 'table-of-contents');
+
         // Paso 1: Verificar visibilidad por tipo de pagina
         $visibleByPageType = $this->pageVisibilityUseCase->execute($componentName);
 
+        if ($debugToc) {
+            error_log("EvaluateComponentVisibility [{$componentName}]: visibleByPageType=" . ($visibleByPageType ? "true" : "false"));
+        }
+
         if (!$visibleByPageType) {
             return false;
         }
@@ -46,6 +53,10 @@ final class EvaluateComponentVisibilityUseCase
         // Paso 2: Verificar exclusiones
         $isExcluded = $this->exclusionsUseCase->execute($componentName);
 
+        if ($debugToc) {
+            error_log("EvaluateComponentVisibility [{$componentName}]: isExcluded=" . ($isExcluded ? "true" : "false"));
+        }
+
         // Mostrar si NO esta excluido
         return !$isExcluded;
     }