feat: caching, optimization, legal pages & footer

- WP Super Cache enabled (PHP mode, gzip, Nginx compatible)
- Autoptimize: CSS/HTML minification + deferred JS + Google Fonts optimization
- Cookie Notice: GDPR/LOPD banner styled with brand colors (navy/burgundy/gold)
- Legal pages: Aviso Legal, Política de Privacidad, Política de Cookies (ES)
- MU-plugin: custom footer with legal links + Cloud Host credit
- Footer: copyright, legal nav, Hosted & Maintained by Cloud Host (cloudhost.es)
- Security: X-Frame-Options, X-Content-Type, Referrer-Policy headers
- Security: XML-RPC disabled, REST user enumeration blocked
- Performance: emoji scripts removed, post revisions limited to 3

wp-content/plugins/autoptimize/classes/autoptimizeCLI.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * WP-CLI commands for Autoptimize.
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+    exit;
+}
+
+// This is a WP-CLI command, so bail if it's not available.
+if ( ! defined( 'WP_CLI' ) ) {
+    return;
+}
+
+class autoptimizeCLI extends \WP_CLI_Command
+{
+    /**
+     * Clears the cache.
+     *
+     * @subcommand clear
+     *
+     * @param array $args Args.
+     * @param array $args_assoc Associative args.
+     *
+     * @return void
+     */
+    public function clear( $args, $args_assoc ) {
+        WP_CLI::line( esc_html__( 'Flushing the cache...', 'autoptimize' ) );
+        autoptimizeCache::clearall();
+        WP_CLI::success( esc_html__( 'Cache flushed.', 'autoptimize' ) );
+    }
+}
+
+WP_CLI::add_command( 'autoptimize', 'autoptimizeCLI' );