Altera type para drupal-custom-module

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

composer.json

@@ -1,7 +1,7 @@
 {
     "name": "imecc/structural_pages",
     "description": "Implements hierarchical editorial structure and contextual navigation for institutional sites.",
-    "type": "drupal-module",
+    "type": "drupal-custom-module",
     "license": "GPL-2.0-or-later",
     "require": {
         "php": ">=8.1",