Fix the last 1,370 broken internal links, empty PT page and canonicals

Broken internal links: 1,370 -> 0 occurrences.
- 1,068 resolved context-aware: the same dead path needs a different destination on
  each locale, so resolution is per (page, target), not per string. Old-site routes
  (/contacto/, /servicios*, /consultoria*, /implementacion*, /recursos*) go to the
  page's own locale home or /odoo/ hub; legacy /odoo-ai/ paths are rewritten to
  /odoo-ia/; locale pages linking a root slug get their own locale's version.
- 301 remaining point at inline body links to pages that were planned but never
  written (35 locale hosting articles, 5 old /odoo-ai/ slugs, dead sections). Those
  fall back to the same-language section hub rather than 404.

Empty PT page: pt/odoo-ia/odoo-sistema-reservas-booking-ia-2025/ was 0 bytes and
returned an empty 200 from the PT sitemap. Removed it, its <url> block and every
hreflang alternate pointing at it; the 5 PT pages that linked to it now point at
/pt/odoo-ia/.

Canonicals: 23 relative -> absolute (a relative canonical carries no host, and apex
and www both answer 200). 62 pages had a second canonical added in the previous pass
because theirs was written href-first; duplicates removed, every page now has
exactly one. 404.html deliberately has none.

English homepage: title, description and H1 aligned to the 'odoo experts' query.

ar/odoo-hosting/integracion-django-odoo-desarrollo-2025/index.html

@@ -431,7 +431,7 @@
                 
                 <p>La pregunta no es si la integración Django-Odoo es técnicamente posible—lo es. La pregunta es si tu organización está lista para aprovechar esa posibilidad. Porque al final del día, la tecnología es solo un multiplicador. نعم tus procesos están rotos, la mejor integración del mundo solo va a hacer que falles más rápido.</p>
                 
-                <p>¿Estás listo para dar el salto? <a href="https://www.odoo-expertos.com/servicios" rel="nofollow noopener" target="_blank">Contáctanos para una evaluación gratuita</a> de tu arquitectura actual y descubre si Django-Odoo es la ventaja competitiva que tu empresa necesita.</p>
+                <p>¿Estás listo para dar el salto? <a href="/ar/odoo/" rel="nofollow noopener" target="_blank">Contáctanos para una evaluación gratuita</a> de tu arquitectura actual y descubre si Django-Odoo es la ventaja competitiva que tu empresa necesita.</p>
             </section>
             
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