deepakpatil84/pure-data-todo ? reverse-engineered prompt

Build me a simple sample todo app in TypeScript for pure data.

I want a clean little app that lets me add tasks, mark them as done, and remove them. It should feel like a basic demo project, not a huge product, so keep the interface simple and easy to understand. Use sensible defaults, show an empty state when there are no todos, and make the list update smoothly as I interact with it.

Please wire it up so the data handling is straightforward and easy to follow, since this is meant to be a sample app. If you need to check the current docs for pure data or any related setup details, go ahead and look them up online. Make sure the project runs cleanly from a fresh install, and keep the code organized so someone can use it as an example or starting point.