refactor: rename middleware.ts to proxy.ts per Next.js 16 spec

shop/middleware.ts

@@ -1,20 +0,0 @@
-import { updateSession } from "@/lib/supabase/proxy";
-import { type NextRequest } from "next/server";
-
-export async function middleware(request: NextRequest) {
-  return await updateSession(request);
-}
-
-export const config = {
-  matcher: [
-    /*
-     * Match all request paths except:
-     * - _next/static (static files)
-     * - _next/image (image optimization files)
-     * - favicon.ico (favicon file)
-     * - images - .svg, .png, .jpg, .jpeg, .gif, .webp
-     * Feel free to modify this pattern to include more paths.
-     */
-    "/((?!_next/static|_next/image|favicon.ico|.*\\.(?:svg|png|jpg|jpeg|gif|webp)$).*)",
-  ],
-};