Cart Persistence and Foil Pricing: Major Shopping Cart Upgrades We've shipped two critical improvements to the shopping cart experience based on user feedback: 1. Fixed Cart Emptying on Navigation The Problem: Users reported that adding cards to their cart, then navigating to a card detail page would empty the cart. This was caused by a React hydration mismatch where the server rendered an empty cart state, but the client tried to load from localStorage, causing Next.js to throw hydration errors