Affiliate funnel: tag all odoo4projects.com links with utm_source=odoo-expertos.com

- 467 outbound links across 254 files now carry our affiliate UTM
  (replaces the stale utm_source=X5Y2I933 on the banner components)
- fix 36 links to /starter /professional /enterprise /business /mx,
  which return 404 on the target; remapped to /#pricing
- add a managed-hosting CTA block to all 6 homepages (es/en/de/fr/pt/ar),
  which previously carried zero links to the host

en/odoo-hosting/odoo-16-hosting-2026/index.html

@@ -1222,7 +1222,7 @@
                         <li>24/7 Spanish support</li>
                         <li>Monitoreo proactivo</li>
                     </ul>
-                    <a href="https://odoo4projects.com" class="cta-btn" target="_blank" rel="noopener sponsored">Ver Planes Legacy</a>
+                    <a href="https://odoo4projects.com?utm_source=odoo-expertos.com" class="cta-btn" target="_blank" rel="noopener sponsored">Ver Planes Legacy</a>
                 </div>
 
                 <!-- Odoo.sh -->
@@ -1507,7 +1507,7 @@
         <section class="cta-banner fade-in">
             <h3>Necesitas Hosting Especializado para Odoo 16?</h3>
             <p>Odoo4projects ofrece soporte extendido hasta 2028 para Odoo 16, con parches de seguridad propios, migracion asistida y soporte en espanol 24/7.</p>
-            <a href="https://odoo4projects.com" class="cta-btn" target="_blank" rel="noopener sponsored">Consultar Planes Legacy</a>
+            <a href="https://odoo4projects.com?utm_source=odoo-expertos.com" class="cta-btn" target="_blank" rel="noopener sponsored">Consultar Planes Legacy</a>
         </section>
 
         <!-- FAQ Section -->