Send stability test due notifications to team channel

Your stability testing sheet updates don't reach lab coordinators, causing missed runs and delayed prep. This sends timely team alerts and logs announcements so tests are prepared the same day.

Overview

When stability test rows update in your sheet, teams need context immediately or runs get missed and release timelines slip. This flow converts updates into immediate team alerts and a searchable announcement log, so coordinators and technicians have the test sheet and context the same day.