Add login-complete tag to contact on member join

New community member sign-ups are not reflected in CRM contacts, leaving onboarding teams blind. Tagging the matching contact on join lets coordinators start welcome sequences the same day.

Overview

Community sign-ins that don't update your CRM leave onboarding coordinators working blind and slow down first-touch outreach. This flow tags the matching contact as "login complete" so coordinators can launch welcome journeys immediately and measure activations the same day.