style: enhance Congo theme — profile layout, richer homepage, author info

- Switch to profile homepage layout with author headline and bio
- Richer homepage content with topic overview (EN/DE)
- Show taxonomies on articles and lists
- Configure header, footer, scroll-to-top
- Remove theme attribution from footer

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

config/_default/languages.en.toml

@@ -9,9 +9,13 @@ title = "Internet for Kids"
   description = "Expert insights on child protection laws, online safety, and digital family protection worldwide."
 
 [params.author]
-  name = "Agiliton"
-  headline = "Protecting Kids Online"
-  bio = "Expert insights on child protection laws, online safety, and digital family protection worldwide."
+  name = "Internet for Kids"
+  headline = "Making the internet safer for every child"
+  bio = "A publication by Agiliton — covering child protection laws, online safety tools, and digital parenting advice for families worldwide."
+  links = [
+    { link = "https://www.agiliton.eu" },
+    { rss = "/index.xml" },
+  ]
 
 [[menus.main]]
   identifier = "about"