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/cookie-notice/js/admin-dashboard.js

@@ -0,0 +1,19 @@
+( function( $ ) {
+
+	// ready event
+	$( function() {
+		// get charts
+		var charts = cnDashboardArgs.charts;
+
+		if ( Object.entries( charts ).length > 0 ) {
+			for ( const [key, config] of Object.entries( charts ) ) {
+				// create canvas
+				var canvas = document.getElementById( 'cn-' + key + '-chart' );
+
+				if ( canvas )
+					new Chart( canvas, config );
+			}
+		}
+	} );
+
+} )( jQuery );