Table of ContentsNext.js served us well. Then it didn't.Why TanStack Start + ViteTwo PRs, zero downtimeWhat we gave upRailway's frontend runs on RailwayWhy nowRailway's entire production frontend no longer runs on Next.js. The dashboard, the canvas, railway.com, all of it now runs on Vite + TanStack Router, and we shipped the migration in two PRs with zero downtime.Next.js served us well. Then it didn't.Next.js got railway.com from zero to a production app serving millions of users monthly. It's...