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/img/layout-left.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svgjs="http://svgjs.com/svgjs" viewBox="0 0 140 140" width="140" height="140"><g transform="matrix(5.833333333333333,0,0,5.833333333333333,0,0)"><path d="M1.500 1.497 L22.500 1.497 L22.500 22.497 L1.500 22.497 Z" fill="none" stroke="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5"></path><path d="M7.5 1.497L7.5 22.497" fill="none" stroke="#000000" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5"></path></g></svg>