Re-ignore font files (public repo — no binaries)

Fonts available in private Gitea mirror only.
Public repo: download from nerdfonts.com

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitignore

@@ -1,5 +1,5 @@
 # Font files — download separately from nerdfonts.com
-# fonts/  # temporarily unignored for private push
+fonts/
 
 # macOS
 .DS_Store