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

de/odoo-hosting/kostenloses-odoo-hosting-2026/index.html

@@ -1104,7 +1104,7 @@
                         <li>Eigene Domain moeglich</li>
                         <li class="limitation">Nach 14 Tagen ab 29 EUR/Monat</li>
                     </ul>
-                    <a href="https://odoo4projects.com" class="cta-btn" target="_blank" rel="noopener sponsored">14 Tage kostenlos testen</a>
+                    <a href="https://odoo4projects.com?utm_source=odoo-expertos.com" class="cta-btn" target="_blank" rel="noopener sponsored">14 Tage kostenlos testen</a>
                 </div>
 
                 <!-- Local Installation -->
@@ -1324,7 +1324,7 @@
         <section class="cta-banner fade-in">
             <h3>Bereit fuer professionelles Odoo Hosting?</h3>
             <p>Testen Sie Odoo4projects 14 Tage kostenlos - mit vollem Funktionsumfang, KI-Integration und deutschsprachigem Support. Keine Kreditkarte erforderlich.</p>
-            <a href="https://odoo4projects.com" class="cta-btn" target="_blank" rel="noopener sponsored">Jetzt 14 Tage kostenlos testen</a>
+            <a href="https://odoo4projects.com?utm_source=odoo-expertos.com" class="cta-btn" target="_blank" rel="noopener sponsored">Jetzt 14 Tage kostenlos testen</a>
         </section>
 
         <!-- FAQ Section -->