Add candidate referral messages into hiring tracker sheet

Candidate referrals posted in HR channels go unrecorded, leaving coordinators unaware of new applicants. Log referrals to a central tracker so coordinators can review and contact candidates same day.

Overview

Referral messages in busy chat channels often go unrecorded and slow hiring. This flow captures those referrals into a central hiring sheet so recruiting coordinators see new entries immediately and can start outreach same day. It reduces manual entry and closes the gap between referral and candidate contact.