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.

fr/odoo-hosting/index.html

@@ -259,7 +259,7 @@
         <div class="container">
             <div class="article-stats">
                 <h2>100+ Guides Specialises en Hebergement Odoo</h2>
-                <p>Ressources completes sur l'infrastructure, les fournisseurs cloud et les configurations optimisees pour maximiser les performances de votre Odoo ERP. Commencez avec notre <a href="/fr/odoo-hosting/meilleur-hebergement-odoo-2026/" style="color: #FF6B35;">guide definitif du meilleur hebergement 2026</a> et completez votre apprentissage avec <a href="/fr/odoo/installer-odoo-guide-etape-par-etape-2025/" style="color: #FF6B35;">notre guide d'installation</a>.</p>
+                <p>Ressources completes sur l'infrastructure, les fournisseurs cloud et les configurations optimisees pour maximiser les performances de votre Odoo ERP. Commencez avec notre <a href="/fr/odoo-hosting/" style="color: #FF6B35;">guide definitif du meilleur hebergement 2026</a> et completez votre apprentissage avec <a href="/fr/odoo/" style="color: #FF6B35;">notre guide d'installation</a>.</p>
             </div>
 
             <!-- FEATURED 2026 CONTENT -->
@@ -271,7 +271,7 @@
                 <!-- Pillar Pages -->
                 <h3 style="color: #fff; margin: 2rem 0 1rem; font-size: 1.3rem;">Guides Principaux (Pillar Pages)</h3>
                 <div class="articles-grid" style="margin-bottom: 2rem;">
-                    <a href="/fr/odoo-hosting/meilleur-hebergement-odoo-2026/" class="article-card" style="border-color: #FF6B35;">
+                    <a href="/fr/odoo-hosting/" class="article-card" style="border-color: #FF6B35;">
                         <div class="article-card-image" style="background: linear-gradient(135deg, #FF6B35 0%, #FF8A50 100%);">
                             <div class="article-card-icon">&#127942;</div>
                         </div>