Additional-owner card activation funnelCards & Interchange

Task prompt

We're prepping the retro for the Additional Owners launch and there's no dashboard, so I need the real funnel pulled from the warehouse, measured against how the additional-owner card experience was actually specced. Start with the cohort itself: how many people are additional owners, and how many of them never ordered a card at all? For everyone who did order, look at each person's first card (the earliest card they ever held, whichever of their accounts it sits on) and give me the ordering-to-activation funnel, split physical vs virtual: how many ordered, how many activated, and how many ever successfully got the card into a digital wallet. Call out the single biggest drop-off. Also tell me how many actually paid for an extra card versus took the free first card, counting someone as having paid only if an extra-card fee was charged on one of their own card orders, not merely posted to an account they share with someone else. When you've got it: open a Slack channel called "additional-owner-card-funnel-audit", post a summary there with the headline numbers and biggest drop-off and pin it; file an Engineering ticket in project ENG titled "Additional owner card activation funnel audit" capturing the methodology and funnel cells; and reply to me with additional_owner_count, never_ordered_count, virtual_ordered_count, virtual_activated_count, virtual_in_wallet_count, and paid_extra_card_users.