A pack owner never gets the first-Show offer when that pack's mixer was Armed #969

Summary

When a pack owner's first Show ends with that pack's mixer family Armed, the after-Show "first Show" offer isn't shown. It should offer the upgrade to Pro.

Why it matters

That offer is the moment someone who just ran a Show is most likely to upgrade. A pack owner is the closest buyer we have, and they never see it.

Done when

• A test, red first: a pack owner whose first Show ended with that family Armed gets the first-Show offer, and it offers the upgrade product (as the paywall does).
• A Pro owner still never sees it, and a Free user's offer is unchanged.
• The fix PR is merged, before PackAvailability moves up a level.

Details

Found by agent3's Code Reviewer on #966 (fixes #961). afterShowEnded in the record screen decides from license(), which reports Pro when the Armed family's pack is owned. Eric decided 2026-10-26 that the offer should show, with the upgrade. PackAvailability is Debug only, so no tester sees this yet.

Related: #961, #962, #968.