Mark app version ready from screenshot webhook quickly

Screenshots arriving by webhook leave app version records stale and release engineers without ASO asset readiness. Mark readiness automatically so packaging decisions can happen same day.

Overview

When screenshot submissions arrive without automated processing, release owners are left guessing ASO asset readiness and stalls can cascade into packaging delays. This flow finds the right app/version record and marks its asset status Ready within minutes, so release and QA staff can act the same day.