add 301 redirect on successful upload

app.py

@@ -81,7 +81,11 @@ def upload_file():
         thread.start()
         print(f"thread started for {file.filename=}")
 
-    return "File uploaded successfully"
+    response = make_response(make_response("file uploaded succesfully", 301))
+    response.headers["Location"] = "/"
+    response.status_code = 301
+
+    return response
 
 
 @app.route("/run/<string:cassetta>", methods=["GET"])