Export Luke File

### Description

Luke project: Lucene Toolbox Project v9.4.1

I'm trying to export files from Regex:BR_CAR_PLATE, for example, but it generates an error due to the character <:> and we can't change that because the system generates the file in the folder with this name.


### Version and environment details

_No response_

Start in the Luke project’s file-export flow and reproduce the failure with the Regex:BR_CAR_PLATE example described in the issue. Identify how the generated folder name is handled, then verify that exporting succeeds when the name contains a colon.

Written by the indexing model from the issue text.