docs+comments: align plan with gitea PR-only CI and close remaining blockers

apps/blog/models.py

@@ -31,15 +31,16 @@ class HomePage(Page):
 
     def get_context(self, request, *args, **kwargs):
         ctx = super().get_context(request, *args, **kwargs)
-        articles = (
+        articles_qs = (
             ArticlePage.objects.live()
             .public()
             .select_related("author")
             .prefetch_related("tags__metadata")
             .order_by("-first_published_at")
         )
+        articles = list(articles_qs[:5])
         ctx["featured_article"] = self.featured_article
-        ctx["latest_articles"] = articles[:5]
+        ctx["latest_articles"] = articles
         ctx["more_articles"] = articles[:3]
         return ctx