feat(site): publish /australia.html — managed Odoo hosting in Australia (Sydney)

New flat landing page for Australian buyers, built from the approved Phase 2
copy with the five buyer-lens changes (R1-R5) applied. English only, no hreflang.

- australia.html: hero, five sections, four-plan pricing table (On the Rise
  heroed), 7-question FAQ, final CTA band; house CI (midnight/brass/cream,
  Marcellus + Inter), page-scoped CSS only.
- Buy CTAs are native POST forms to the live checkout with Australia (Sydney)
  pre-selected (basket product_id 4, verified against the homepage card).
- images/city-sydney.webp: city-sydney.jpg resized 6720x2240 -> 1920x640,
  9.8 MB -> 131 KB.
- index.html: the Sydney server card now links to the new page.
- sitemap.xml + llms.txt: page registered.

Evidence: verify-html.py PROBLEMS 0, verify-australia-page.py PROBLEMS 0,
JSON-LD parses, impeccable detect run (findings recorded).

sitemap.xml

@@ -12,6 +12,12 @@
     <changefreq>monthly</changefreq>
     <priority>0.9</priority>
   </url>
+  <url>
+    <loc>https://odoo4projects.com/australia.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>