Notify sales channel and update monthly wins spreadsheet

Closed deals post to chat without rep context or refreshed monthly totals, so recognition and reporting lag. This posts the win and updates totals for immediate visibility within minutes.

Overview

When a deal closes won, your channel and reporting should reflect the win immediately; otherwise reps miss recognition and monthly totals fall out of sync. This flow publishes the win and refreshes sheet totals in minutes so managers and ops have current performance visibility.