fix(seo): repair the 10 blog canonicals, sitemap.xml, blog/index.json and llms.txt

From seo/out/site-seo-ai-search-audit-2026-10-27.md (§6 items 1, 2, 3a, 5).

- canonical: 10 blog posts declared https://odooprojects.com/... — a live parked
  third-party domain — as their canonical. Now self-referencing on
  https://odoo4projects.com/blog/posts/<slug>.html (1 line each, nothing else).
- sitemap.xml: 27 -> 33 URLs. Added the 6 live pages that were missing
  (support.html, legal.html, community-vs-enterprise-cost, 6-tips,
  odoocommunity-agents, odoo-20-is-live); corrected 13 lastmod values to the
  real last content commit (homepage was 4 months stale); /de/ and /es/
  priority 1.0 -> 0.7 so a translation does not outrank its original.
- blog/index.json: 7 -> 15 posts. The 8 orphan posts are now listed, so every
  post is reachable from the homepage grid.
- llms.txt: removed the link to /blog/ (that URL returns 403) and added a
  "## Blog posts" section listing all 15 posts with date and summary.

Not changed on purpose: FAQPage on support.html, the homepage "price": ">950.00",
the bootcamp start-date conflict, and the blog post chrome (15 files).

blog/index.json

@@ -57,6 +57,70 @@
       "headline": "Why ODOO Community is Perfect for Working with AI Agents",
       "teaser": "Odoo Community carries no licensing fees, so each AI agent can have its own user account and access rights without additional cost - a game changer for automation.",
       "link": "blog/posts/odoocommunity-agents.html"
+    },
+    {
+      "id": "news-platform-update",
+      "date": "2026-06-24",
+      "area": "news",
+      "headline": "Platform Update: New Dashboard, Faster Backups & Smarter Monitoring",
+      "teaser": "We've rolled out a major platform update with a redesigned dashboard, incremental backups, and AI-powered uptime monitoring.",
+      "link": "blog/posts/news-platform-update.html"
+    },
+    {
+      "id": "guide-migrate-enterprise",
+      "date": "2026-06-20",
+      "area": "guide",
+      "headline": "How to Migrate from Odoo Community to Enterprise Without Downtime",
+      "teaser": "A step-by-step guide to migrating your Odoo CE instance to Enterprise edition with zero downtime and full data integrity.",
+      "link": "blog/posts/guide-migrate-enterprise.html"
+    },
+    {
+      "id": "howto-custom-module",
+      "date": "2026-06-17",
+      "area": "howto",
+      "headline": "Install Custom Odoo Modules via Git – A Practical How-To",
+      "teaser": "Learn how to install and manage custom Odoo modules directly from Git repositories on your ODOO4projects instance.",
+      "link": "blog/posts/howto-custom-module.html"
+    },
+    {
+      "id": "news-official-partner",
+      "date": "2026-06-14",
+      "area": "news",
+      "headline": "ODOO4projects Becomes an Official Odoo Ready Partner",
+      "teaser": "We're thrilled to announce our official partnership with Odoo SA, bringing enterprise-grade hosting to even more businesses.",
+      "link": "blog/posts/news-official-partner.html"
+    },
+    {
+      "id": "speed-run-backup",
+      "date": "2026-06-10",
+      "area": "speed-run",
+      "headline": "Set Up Automated Backups in Under 2 Minutes",
+      "teaser": "Protect your Odoo data in moments. This speed-run walks you through enabling automated daily backups with one click.",
+      "link": "blog/posts/speed-run-backup.html"
+    },
+    {
+      "id": "howto-ai-automation",
+      "date": "2026-06-06",
+      "area": "howto",
+      "headline": "Build AI-Powered Workflows with Odoo & n8n",
+      "teaser": "Connect Odoo to AI services and automate repetitive tasks using n8n workflows. A hands-on guide for busy operators.",
+      "link": "blog/posts/howto-ai-automation.html"
+    },
+    {
+      "id": "speed-run-deploy",
+      "date": "2026-06-02",
+      "area": "speed-run",
+      "headline": "Deploy Your First Odoo Instance in 5 Minutes",
+      "teaser": "From zero to live Odoo instance in under five minutes. Follow this speed-run and see your business apps running instantly.",
+      "link": "blog/posts/speed-run-deploy.html"
+    },
+    {
+      "id": "my-first-post",
+      "date": "2026-05-28",
+      "area": "guide",
+      "headline": "Getting Started with Odoo Hosting – What You Need to Know",
+      "teaser": "New to Odoo hosting? This guide covers everything from choosing a plan to configuring your first domain and SSL.",
+      "link": "blog/posts/my-first-post.html"
     }
   ]
 }