feat(blog): publish OCA Paraguay Internationalization Hackathon post

New post blog/posts/oca-paraguay-internationalization-hackathon.html (News,
2026-10-29), body verbatim from the supplied source (sha256 cca84c45...),
chrome copied from how-to-install-odoo-modules-using-git.html with the inline
style trimmed to the figureless variant. Adds the newest-first entry to
blog/index.json (16 -> 17), one 0.6 <url> to sitemap.xml (39 -> 40) and the
top line of the llms.txt blog list (16 -> 17).

blog/index.json

@@ -1,5 +1,14 @@
 {
   "posts": [
+    {
+      "id": "oca-paraguay-internationalization-hackathon",
+      "date": "2026-10-29",
+      "area": "news",
+      "headline": "ODOO4projects Supports the OCA Paraguay Internationalization Hackathon",
+      "teaser": "Two online days to push Odoo's Paraguayan localisation forward — and we are supporting them.",
+      "link": "blog/posts/oca-paraguay-internationalization-hackathon.html",
+      "image": "https://image.office.odoo4projects.com/img/py_hackathon.png"
+    },
     {
       "id": "how-to-install-odoo-modules-using-git",
       "date": "2026-10-28",