Debug: Add logging to hooks registration

Public/YoutubeFacade/Infrastructure/Wordpress/YoutubeFacadeHooksRegistrar.php

@@ -31,9 +31,14 @@ final class YoutubeFacadeHooksRegistrar
      */
     public function register(): void
     {
+        // Debug: Log that registration is happening
+        file_put_contents('/tmp/yt-debug.log', date('H:i:s') . " HooksRegistrar::register() called\n", FILE_APPEND);
+
         // Filter post content to replace YouTube iframes with facades
         add_filter('the_content', [$this->contentFilter, 'filter'], 20);
 
+        file_put_contents('/tmp/yt-debug.log', date('H:i:s') . " the_content filter registered\n", FILE_APPEND);
+
         // Enqueue facade assets
         add_action('wp_enqueue_scripts', [$this, 'enqueueAssets'], 15);
     }