fix(critical): move rewrites to beforeFiles to fix 404 on /de/produkte — middleware was intercepting before rewrites

next.config.mjs

@@ -415,20 +415,24 @@ const nextConfig = {
     ],
   },
   async rewrites() {
-    return [
-      {
-        source: '/de/produkte',
-        destination: '/de/products',
-      },
-      {
-        source: '/de/produkte/:path*',
-        destination: '/de/products/:path*',
-      },
-      {
-        source: '/de/kontakt',
-        destination: '/de/contact',
-      },
-    ];
+    return {
+      beforeFiles: [
+        {
+          source: '/de/produkte',
+          destination: '/de/products',
+        },
+        {
+          source: '/de/produkte/:path*',
+          destination: '/de/products/:path*',
+        },
+        {
+          source: '/de/kontakt',
+          destination: '/de/contact',
+        },
+      ],
+      afterFiles: [],
+      fallback: [],
+    };
   },
 };