Implemented:

- + Section button with consistent dividers and automatic uppercase drop caps.
- Banner uploads shown in journal thumbnails and above article titles.
- Additional photos and downloadable files displayed below article text.
- Upload previews and removal controls.
Verified publishing in a browser, mobile layout, backend tests, and production build. Supabase schema updated.

backend/.env.example

@@ -17,6 +17,10 @@ FRONTEND_ORIGINS=http://localhost:5173
 JOURNAL_ADMIN_PASSWORD=replace-with-a-strong-password
 JOURNAL_TOKEN_SECRET=replace-with-a-long-random-secret
 
+# Persistent upload directory; defaults to backend/data/uploads.
+# Mount durable storage here when deploying to a host with an ephemeral filesystem.
+# JOURNAL_UPLOAD_DIR=/var/lib/portfolio/uploads
+
 # Server-only Supabase article storage. Prefer the new sb_secret_ key.
 SUPABASE_URL=https://your-project-ref.supabase.co
 SUPABASE_SECRET_KEY=sb_secret_replace_me