propagated payment commentto bff

api/gateway/mntx/client/client_test.go

@@ -142,3 +142,49 @@ func TestCreateCardTokenPayout_UsesOperationRefWhenReceiptOperationIDMissing(t *
 		t.Fatalf("payout_id mismatch: got=%q want=%q", got, want)
 	}
 }
+
+func TestCreateCardPayout_SendsCommentAsSeparateParam(t *testing.T) {
+	stub := &stubConnectorClient{
+		submitResp: &connectorv1.SubmitOperationResponse{
+			Receipt: &connectorv1.OperationReceipt{
+				OperationId: "payment-4:hop_4_card_payout_send",
+				Status:      connectorv1.OperationStatus_OPERATION_WAITING,
+			},
+		},
+	}
+	client := &gatewayClient{client: stub, cfg: Config{}}
+
+	_, err := client.CreateCardPayout(context.Background(), &mntxv1.CardPayoutRequest{
+		OperationRef:   "payment-4:hop_4_card_payout_send",
+		IdempotencyKey: "idem-4",
+		AmountMinor:    1000,
+		Currency:       "RUB",
+		Comment:        "invoice-44",
+		Metadata: map[string]string{
+			"comment":  "legacy-comment",
+			"trace_id": "trace-44",
+		},
+	})
+	if err != nil {
+		t.Fatalf("CreateCardPayout returned error: %v", err)
+	}
+	if stub.submitReq == nil || stub.submitReq.GetOperation() == nil {
+		t.Fatal("expected submitted operation")
+	}
+
+	fields := stub.submitReq.GetOperation().GetParams().GetFields()
+	if got, want := fields["comment"].GetStringValue(), "invoice-44"; got != want {
+		t.Fatalf("comment param mismatch: got=%q want=%q", got, want)
+	}
+	metadataField, ok := fields["metadata"]
+	if !ok || metadataField == nil || metadataField.GetStructValue() == nil {
+		t.Fatal("expected metadata param")
+	}
+	metadata := metadataField.GetStructValue().GetFields()
+	if _, hasComment := metadata["comment"]; hasComment {
+		t.Fatalf("metadata must not include comment key")
+	}
+	if got, want := metadata["trace_id"].GetStringValue(), "trace-44"; got != want {
+		t.Fatalf("trace_id metadata mismatch: got=%q want=%q", got, want)
+	}
+}