Real-Time Dashboard in Next.js with TanStack Query + Zustand (opens in new tab)

An admin dashboard sounds like a simple project. List some data, add some filters, show some charts. In practice, it's where all the product complexity concentrates: real-time data that needs to stay fresh, filter state that needs to survive navigation, error boundaries that need to tell you about production failures before users report them, and data visualization that shouldn't add 300 kB to your bundle for a single chart. I've built admin dashboards for vatnode.dev and HTPBE?. The HTPBE? d...