Mark project task complete when support case closes

A CRM case can close while its task remains open, leaving delivery unsure of real status. Automatically complete the project task so coordinators and billing see accurate status same day.

Overview

Close the loop between case records and project work so delivery staff stop redoing finished work and billing runs on schedule. This flow marks the linked task complete as soon as the case closure flag is set, giving coordinators reconcile-ready status same day.