fix(auth): restore middleware, fix setup redirect loop, and add next.config rewrites proxying Supabase requests

shop/next.config.ts

@@ -25,6 +25,23 @@ const nextConfig: NextConfig = {
       },
     ];
   },
+  async rewrites() {
+    const supabaseUrl = (process.env.SUPABASE_URL || "http://supabase-kong:8000").replace(/\/$/, "");
+    return [
+      {
+        source: '/auth/v1/:path*',
+        destination: `${supabaseUrl}/auth/v1/:path*`,
+      },
+      {
+        source: '/rest/v1/:path*',
+        destination: `${supabaseUrl}/rest/v1/:path*`,
+      },
+      {
+        source: '/storage/v1/:path*',
+        destination: `${supabaseUrl}/storage/v1/:path*`,
+      },
+    ];
+  },
 };
 
 export default nextConfig;