Essentials design documents

• QR Coupon Journeys: reusable activity actions, GUID links, authenticated continuation, and phone QR cards.
• Phone card and offer experience: screens, installation behavior, accessibility, and interaction copy.
• LinkedIn post concept: campaign artwork, draft post copy, and an interactive feed preview.
• Implementation backlog: delivery sequence and GitHub issues for this plan.

These are design proposals. They do not announce released functionality.