chore: shift showcase asset rewrites to next.config.mjs for standalone stability

apps/web/next.config.mjs

@@ -46,6 +46,25 @@ const nextConfig = {
       },
     ];
   },
+  async rewrites() {
+    return {
+      beforeFiles: [
+        // Map Patttern: Global assets moved into KLZ showcase folder
+        {
+          source: '/assets/klz-cables.com/:path*',
+          destination: '/showcase/klz-cables.com/assets/klz-cables.com/:path*',
+        },
+        {
+          source: '/wp-content/:path*',
+          destination: '/showcase/klz-cables.com/wp-content/:path*',
+        },
+        {
+          source: '/wp-includes/:path*',
+          destination: '/showcase/klz-cables.com/wp-includes/:path*',
+        },
+      ]
+    };
+  },
   // In Standalone mode, Next.js expects the tracing root to be the monorepo root
   outputFileTracingRoot: path.join(dirname, '../../'),
 };