more ucp

cmd/order/main.go

@@ -162,8 +162,12 @@ func main() {
 		orderUCP = ucp.WithSigning(orderUCP, signer)
 		logger.Info("ucp signing enabled")
 	}
-	mux.Handle("/ucp/v1/orders", orderUCP)
-	mux.Handle("/ucp/v1/orders/", orderUCP)
+	// StripPrefix is required because the sub-mux (OrderHandler) registers
+	// routes like "GET /{id}" which expect a relative path; Go's ServeMux
+	// passes the full request path without stripping the prefix.
+	// Only the subtree pattern is registered (see comment in cmd/cart/main.go
+	// for why the exact-match pattern is omitted).
+	mux.Handle("/ucp/v1/orders/", http.StripPrefix("/ucp/v1/orders", orderUCP))
 
 	// Saga / flow admin (backoffice editor).
 	mux.HandleFunc("GET /sagas/capabilities", s.handleCapabilities)