Consider using TransformedData instead of ItemTreeNode here

would need to refactor Items to use full capabilities of TransformedData

https://api.github.com/acenturyandabit/workflowish/blob/d9dac81df2e15a1b543aaf24406286b3278b7042/src/Workflowish/mvc/context.tsx#L4

```javascript

import * as React from 'react';
import { ItemTreeNode } from './model';

// TODO: Consider using TransformedData instead of ItemTreeNode here
// would need to refactor Items to use full capabilities of TransformedData
export const ModelContext = React.createContext({
lastModifiedUnixMillis: 0,
id: "MODEL_CONTEXT_DEFAULT",

```