What I Learned Building a Production-Style Shopping List App with Angular and ASP.NET Core (CQRS) Shoppi Landing PageA small shopping list app turned into a real-world testbed for authentication, real-time updates, observability, CQRS, deployment, and my own .NET library, Axent (see https://medium.com/@magmablinker/source-generated-cqrs-in-net-meet-axent-b86e61dba3e5 ). Intro Shopping list apps are usually not considered exciting engineering projects. At first glance, Shoppi is exactly that: a small web app for creating and sharing shopping lists. You can add products, organize them by category or brand, mark items as completed, and collaborate with other people in real time. But I intentionally built Shoppi like a real production application. Not because every shopping list app needs a full observability stack, CQRS, audit logs, background jobs, Docker-based deployment, and real-time synchronization. It probably does not.…