Would it be possible to add a reset progress button? I'd love to play the new update with a fresh start!
In the Desktop version, you can navigate to your save files and delete them. You can find the save path in the Settings -> Saving section in-game.
For the Web version, I don't think there's a way. It's something I plan to look into for sure, but I'm fairly new to Web versions in general so I'm not totally sure how that'd work.