feat(site): publish /odoo-community-upgrade.html (EN Odoo Community Upgrade page)

New EN landing page for the head term "ODOO Community Upgrade": hero, what an
upgrade is, the 10-step published process, a developer-labelled technical section
with four sourced command blocks and their substitution notes, the ODOO4projects
migration service (new database on our servers), the self-hosting cost honesty
section, an 8-question FAQ and a final CTA. House CI only, page-scoped CSS, no
new blocking resources.

- CTAs are plain links to the real flows: /support.html#contact (opens the
  migration ticket) and /index.html#pricing. No basket POST and no product id:
  no price is published for the migration service, so wiring a buy would invent one.
- JSON-LD: WebPage + Service + FAQPage (8 questions), no Offer node.
- sitemap.xml: new URL added; llms.txt: page listed under Key pages.
- support.html: the "older version" FAQ answer now links the new page so it is not orphaned.

Copy: copywriter/out/odoo-community-upgrade-page-copy-2026-10-27.md. The 7
NOT PUBLISHED gaps (G1-G7) are not in the build.

sitemap.xml

@@ -18,6 +18,12 @@
     <changefreq>monthly</changefreq>
     <priority>0.9</priority>
   </url>
+  <url>
+    <loc>https://odoo4projects.com/odoo-community-upgrade.html</loc>
+    <lastmod>2026-10-27</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.9</priority>
+  </url>
   <url>
     <loc>https://odoo4projects.com/odoo-erp-automation-bootcamp/</loc>
     <lastmod>2026-10-24</lastmod>