feat: initial ACRIB WordPress deployment

- WordPress 6.9.4 (es_ES) with Kadence theme
- Homepage: Hero, La Asociación, Pilares, Beneficios, Eventos, Miembros, Hazte Miembro, Contacto
- Brand identity: #13294b navy, #a12932 burgundy, #c69c48 gold
- Fonts: Raleway (headings) + Source Sans 3 (body) + Lato (UI)
- Plugins: Kadence Blocks, Polylang, Contact Form 7
- Custom CSS with full brand styling and responsive layout
- HTTPS enforced via wp-config.php proxy detection

wp-admin/network/plugin-install.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Install plugin network administration panel.
+ *
+ * @package WordPress
+ * @subpackage Multisite
+ * @since 3.1.0
+ */
+
+if ( isset( $_GET['tab'] ) && ( 'plugin-information' === $_GET['tab'] ) ) {
+	define( 'IFRAME_REQUEST', true );
+}
+
+/** Load WordPress Administration Bootstrap */
+require_once __DIR__ . '/admin.php';
+
+require ABSPATH . 'wp-admin/plugin-install.php';