The dataroom carried its own plan catalog, feature grid and Stripe
price-id mapper with no payment SDK behind them, so nothing there could
take money. Plans and pricing now open pay.hanzo.ai, invoices and
payment method open billing.hanzo.ai, both named once in
lib/billing/hosted.ts.
UpgradePlanModal keeps its name, props and children API across all 45
call sites; clickedPlan rides the analytics event and highlightItem no
longer has an effect, since the hosted page owns the catalog.
zooqueen
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