Initial commit: Grav CMS setup with HTML reference material

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

user/plugins/form/templates/forms/fields/columns/columns.html.twig

@@ -0,0 +1,7 @@
+{% extends "forms/field.html.twig" %}
+
+{% block field %}
+<div class="form-columns {{ field.classes }}">
+    {% include 'forms/default/fields.html.twig' with {name: field.name|parent_field, fields: field.fields} %}
+</div>
+{% endblock %}