linting

api/gateway/chain/client/client.go

@@ -321,11 +321,13 @@ func (c *chainGatewayClient) callContext(ctx context.Context) (context.Context,
 	if timeout <= 0 {
 		timeout = 3 * time.Second
 	}
+	//nolint:gosec // Caller receives cancel func and defers it in every call path.
 	return context.WithTimeout(ctx, timeout)
 }
 
 func walletParamsFromRequest(req *chainv1.CreateManagedWalletRequest) (*structpb.Struct, error) {
 	if req == nil {
+		//nolint:nilnil // Nil request means optional params are absent.
 		return nil, nil
 	}
 	params := map[string]interface{}{