request upload only uploads and downloads current segment of route

this functionality can be kept, but it should be way more obvious that you are only downloading the specific segment and not all the footage

Start by locating the request-upload interface that offers downloading a route segment, then inspect how the current segment is described to users. Make the scope explicit so users can distinguish downloading only the selected segment from downloading all footage, and verify the wording in the relevant interface.

Written by the indexing model from the issue text.