Index: src/routes/og.js
===================================================================
--- src/routes/og.js	(revision d9c5eb825f0e52ae97cc1f60c9486b42d53b3795)
+++ src/routes/og.js	(revision a369029032997f24ee3a5bdf3dfa808187be68d1)
@@ -14,5 +14,5 @@
   try {
     site = db.prepare(
-      'SELECT slug, title, tagline, description, palette, accent, theme_override FROM sites WHERE slug = ?'
+      'SELECT slug, title, tagline, description, palette, accent, theme_override, og_theme FROM sites WHERE slug = ?'
     ).get(req.params.slug);
   } catch { /* db error → 404 below */ }