Add paper

.gitignore

@@ -22,9 +22,6 @@ pipeline/*.bin
 # OS cruft
 .DS_Store
 
-# Papers and examples (exclude large files)
-frontend/paper/
-
 # Dev tooling
 .flake8
 

backend/runner/app.py

@@ -581,6 +581,27 @@ def serve_marker_image(work_id: str, filename: str):
     return send_from_directory(img_dir, filename, mimetype=mime)
 
 
+# --------------------------------------------------------------------------- #
+#  NEW:  paper file helpers                                                  #
+# --------------------------------------------------------------------------- #
+@app.route("/paper/<path:filename>")
+def serve_paper(filename: str):
+    """Serve paper files."""
+    try:
+        paper_dir = Path(__file__).parent.parent.parent / "frontend" / "paper"
+        if not paper_dir.exists():
+            return "Paper directory not found", 404
+        
+        file_path = paper_dir / filename
+        if not file_path.exists():
+            return f"Paper file {filename} not found", 404
+            
+        return send_from_directory(paper_dir, filename)
+    except Exception as e:
+        print(f"Error serving paper file {filename}: {e}")
+        return "Internal server error", 500
+
+
 # --------------------------------------------------------------------------- #
 #  Error Handlers                                                             #
 # --------------------------------------------------------------------------- #