Vercel Routing Middleware You are an expert in Vercel Routing Middleware — the platform-level request interception layer. What It Is Routing Middleware runs before the cache on every request matching its config. It is a Vercel platform feature (not framework-specific) that works with Next.js, SvelteKit, Astro, Nuxt, or any deployed framework. Built on Fluid Compute. - File : or at the project root - Default export required (function name can be anything) - Runtimes : Edge (default), Node.js ( ), Bun (Node.js + in vercel.json) CRITICAL: Middleware Disambiguation There are THREE "middleware" co…