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.

llms.txt

@@ -30,6 +30,7 @@
 
 ## Key pages
 
+- [Odoo Community upgrade](https://odoo4projects.com/odoo-community-upgrade.html): what an upgrade changes, the published step-by-step process, the real commands for a developer (Odoo's upgrade platform and the OCA OpenUpgrade route) and how we migrate a database onto our servers. No price and no duration are published for the migration service; it starts with a support ticket.
 - [Odoo hosting in Australia — Sydney](https://odoo4projects.com/australia.html): managed Odoo Community hosting on our own servers in Sydney, for Australian businesses. The four plans and yearly prices, the checkout with Australia (Sydney) pre-selected, and the one Sydney claim we make — we host in Sydney (no AU support hours, no AU entity, no AUD price published).
 - [Odoo hosting 2027 — comparison landing page](https://odoo4projects.com/odoo-hosting-2027.html): every route to Odoo (managed, VPS, odoo.sh, Odoo Online, own hardware) side by side, with annual and five-year cost comparisons.
 - [Odoo ERP Automation Bootcamp](https://odoo4projects.com/odoo-erp-automation-bootcamp/): a three-month, ten-session live bootcamp with Oliver Arnold, Technical Lead, that takes a small business from zero to a running ERP. Thursdays, one hour, Q1 2026, starting 8 January 2026; one year of hosted Odoo Community Edition included. The current price is confirmed on registration.