Add segmented program contacts to targeted mailing lists

Updated prospect rows missing program tags put trainees into wrong lists and trigger off-target onboarding. Assign contacts to correct program lists so coordinators send the right sequences same day.

Overview

When prospect rows change, trainees can end up in the wrong lists and onboarding coordination stalls. This flow routes updated rows into program-specific lists and removes irrelevant memberships so campaign coordinators deliver the right sequences the same day.