Fix data saving

backend/server.py

@@ -418,7 +418,7 @@ def run_pipeline():
         _GENERATION_RESULTS = evaluated_results
 
         timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
-        os.makedirs("tmp", exist_ok=True)
+        os.makedirs("/tmp", exist_ok=True)
         output_file = f"/tmp/pipeline_generation_{timestamp}.csv"
         evaluated_results.to_csv(output_file, index=False)
         results['generation_file'] = output_file
@@ -589,7 +589,7 @@ def run_pipeline():
 
 
 if __name__ == '__main__':
-    os.makedirs("tmp", exist_ok=True)
+    os.makedirs("/tmp", exist_ok=True)
     print("Starting minimal Flask server...")
     print("Available endpoints:")
     print("  GET  /health - Health check")