Sponsor line on every page, under the wordmark above the rule

scripts/sync_posts.py

@@ -218,7 +218,12 @@ POST_PAGE = """<!DOCTYPE html>
 </head>
 <body>
 <header class="masthead">
-  <a class="wordmark" href="../index.html">The OC Guy</a>
+  <div class="mast-brand">
+    <a class="wordmark" href="../index.html">The OC Guy</a>
+    <aside class="sponsor" aria-label="Sponsor">
+      <p>Our sponsor: <a href="https://ODOO4projects.com/?utm_source=oc-guy.com&amp;utm_medium=website&amp;utm_campaign={sponsor_campaign}" target="_blank" rel="noopener sponsored">Odoo Community Hosting</a></p>
+    </aside>
+  </div>
   <nav class="nav" aria-label="Sections">
     <a href="../index.html#tips">Tips</a>
     <a href="../index.html#blog">Blog</a>
@@ -238,6 +243,7 @@ POST_PAGE = """<!DOCTYPE html>
   <p class="foot-name" aria-hidden="true">The OC Guy</p>
   <div class="foot-cols">
     <p class="foot-note">Odoo Community advocate. Written by Oliver Arnold, 安雷威 — no partner programme, no licences sold.</p>
+    <p class="sponsor-foot">Our sponsor: <a href="https://ODOO4projects.com/?utm_source=oc-guy.com&amp;utm_medium=website&amp;utm_campaign={sponsor_campaign}" target="_blank" rel="noopener sponsored">Odoo Community Hosting</a></p>
     <nav class="foot-links" aria-label="Elsewhere">
       <a href="../index.html">Home</a>
       <a href="https://github.com/OCA" target="_blank" rel="noopener">OCA modules</a>
@@ -315,6 +321,7 @@ def build_entry(item: dict, seen_ids: set[str], seen_hashes: set[str], dry: bool
             category=html.escape(category),
             date=iso,
             date_human=html.escape(human_date(iso)),
+            sponsor_campaign=base,
             image=f'<img class="post-image" src="../{image_rel}" alt="" width="1200" height="800">' if image_rel else "",
             body=body_html or f"<p>{html.escape(body_text)}</p>",
         )