Send direct assignment message for new task in team chat

Task payloads often arrive without assignment context, leaving QA unaware and delaying triage. It sends task links and context to the assignee so triage can start the same day.

Overview

When task webhooks fail to reach the right person, QA work stalls and release readiness slips. This flow pushes task context and links straight into the assignee's chat so engineers start triage within minutes and handoffs stop blocking progress.