feat(cover): filter obituaries from cover headlines

Exclude articles categorized as "Obituaries" from the headline list
passed to cover generation. Applied in all three call sites: manual
publish, issue regenerate, and auto-publish scheduler.

Made-with: Cursor

src/routes/issues.py

@@ -103,13 +103,17 @@ def regenerate(issue_id):
     issue = Issue.query.get_or_404(issue_id)
     article_ids = json.loads(issue.article_ids)
 
+    articles_for_issue = (
+        Article.query.filter(Article.id.in_(article_ids))
+        .order_by(Article.pub_date.asc())
+        .all()
+    )
     headlines = [
-        a.title for a in Article.query.filter(Article.id.in_(article_ids))
-        .order_by(Article.pub_date.asc()).all()
+        a.title for a in articles_for_issue
+        if "Obituaries" not in json.loads(a.categories)
     ]
-
     categories_list = []
-    for a in Article.query.filter(Article.id.in_(article_ids)).all():
+    for a in articles_for_issue:
         categories_list.extend(json.loads(a.categories))
 
     try: