feat(blog): publish "Our freelancer directory opens on 1 December. Help us get the signup right"

Adds the soft-launch news post (pipeline record id=128, category News) as
blog/posts/freelancer-directory-soft-launch.html. Body pasted verbatim from
the inbox source block (sha256 14f61402…, byte-identical in the page).

- chrome copied from blog/posts/odoo-20-is-live-on-our-servers-here-is-what-changed.html
  (the newest post); inline <style> trimmed of the rules this page does not use
  (ul/ol, li, figure, figure img, figcaption) — the body carries no list or figure
- card/OG image wired additively: img.post-image (alt = the page h1), og:image,
  twitter:card, and the new blog/index.json "image" key
- BlogPosting JSON-LD with url == canonical
- blog/index.json: one entry, first, key order id,date,area,headline,teaser,link,image
  (text splice, not json.dumps)
- sitemap.xml: one <url>, first in the blog group, lastmod 2026-11-04
- llms.txt: one line at the top of the blog list
- work/verify-html.py FILES extended with the new page

Blog stays English-only. No older post touched.

sitemap.xml

@@ -84,6 +84,12 @@
     <changefreq>yearly</changefreq>
     <priority>0.4</priority>
   </url>
+  <url>
+    <loc>https://odoo4projects.com/blog/posts/freelancer-directory-soft-launch.html</loc>
+    <lastmod>2026-11-04</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.6</priority>
+  </url>
   <url>
     <loc>https://odoo4projects.com/blog/posts/odoo-20-is-live-on-our-servers-here-is-what-changed.html</loc>
     <lastmod>2026-11-03</lastmod>