pixel-point/toolcraft ? reverse-engineered prompt

Build me a small creative app for making an ASCII art version of an uploaded image.

I want a clean canvas where someone can upload a picture, preview it, zoom and pan around it, and adjust a few simple controls like character density, contrast, brightness, and output size until it looks good. It should feel like a lightweight design tool, not a photo editor, so keep the interface simple and focused. If it makes sense, add a history panel so I can undo changes, and make sure I can export the final result cleanly.

Use the existing Toolcraft starter and keep the app ready for future tweaks, so the controls and renderer are easy to edit later. If you need to check current docs or examples online, go ahead. Make the default experience polished enough that I can drop in an image and immediately start turning it into ASCII art.