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-startups-2026/index.html

@@ -1174,7 +1174,7 @@
                         <li>7 global data centers</li>
                         <li>Backups diarios automaticos</li>
                     </ul>
-                    <a href="https://odoo4projects.com" class="cta-btn" target="_blank" rel="noopener sponsored">Try Free 14 Days</a>
+                    <a href="https://odoo4projects.com?utm_source=odoo-expertos.com" class="cta-btn" target="_blank" rel="noopener sponsored">Try Free 14 Days</a>
                 </div>
 
                 <!-- Hetzner -->
@@ -1395,7 +1395,7 @@
         <section class="cta-banner fade-in">
             <h3>Lanza tu Startup con Odoo Hoy</h3>
             <p>Odoo4projects ofrece Hosting gestionado desde 29 EUR/month con usuarios Unlimited, Integrated AI y soporte en espanol. Prueba 14 dias gratis y 60 dias de garantia de devolucion.</p>
-            <a href="https://odoo4projects.com" class="cta-btn" target="_blank" rel="noopener sponsored">Comenzar Prueba Gratuita</a>
+            <a href="https://odoo4projects.com?utm_source=odoo-expertos.com" class="cta-btn" target="_blank" rel="noopener sponsored">Comenzar Prueba Gratuita</a>
         </section>
 
         <!-- FAQ Section -->