An in-feature paywall — usage note, benefit bullets, a two-tier mini compare, an async upgrade CTA and a "remind me tomorrow" snooze that round-trips through the host, as a banner or as an overlay that blurs only its own box.
npx shadcn@latest add @zyeon/upgrade-promptZyeon UI limits how often it can be asked, and Upgrade Prompt hasn't had its turn. Its source will show here once it has.