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/hosting-odoo-descuento-2026/index.html

@@ -974,7 +974,7 @@
                         <li>Sin limite de usuarios</li>
                         <li>Garantia 60 dias</li>
                     </ul>
-                    <a href="https://odoo4projects.com" class="cta-btn" target="_blank" rel="noopener sponsored">Activar Descuento 30%</a>
+                    <a href="https://odoo4projects.com?utm_source=odoo-expertos.com" class="cta-btn" target="_blank" rel="noopener sponsored">Activar Descuento 30%</a>
                 </div>
 
                 <!-- Odoo.sh -->
@@ -1351,7 +1351,7 @@
         <section class="cta-banner fade-in">
             <h3>Empieza a Ahorrar Hoy con Odoo4projects</h3>
             <p>Hosting gestionado desde 20,25 EUR/month con facturacion anual. Incluye Integrated AI, soporte en espanol y Free Migration. Usa el codigo <strong>ODOOEXP30</strong> para 30% de descuento.</p>
-            <a href="https://odoo4projects.com" class="cta-btn" target="_blank" rel="noopener sponsored">Activar Descuento 30%</a>
+            <a href="https://odoo4projects.com?utm_source=odoo-expertos.com" class="cta-btn" target="_blank" rel="noopener sponsored">Activar Descuento 30%</a>
         </section>
 
         <!-- FAQ Section -->