Fix data saving

backend/server.py

@@ -61,7 +61,7 @@ def serve_data(filename):
     
     print(f"[Static] Requested file: {filename}")
     
-    data_dir = os.path.abspath('data')
+    data_dir = os.path.abspath('/tmp/data')
     file_path = os.path.join(data_dir, filename)
     
     print(f"[Static] Full path: {file_path}")
@@ -94,7 +94,7 @@ def serve_data(filename):
 @app.route('/debug/files', methods=['GET'])
 def debug_files():
     try:
-        data_dir = os.path.abspath('data')
+        data_dir = os.path.abspath('/tmp/data')
         if not os.path.exists(data_dir):
             return jsonify({"error": "Data directory not found", "path": data_dir})