I noticed the game really needed coyote time but I promised myself to not touch the character code on the last day so I didn't end up implementing it. The reason the dash stars do not respawn is that the original plan is to have other abilities as well, and you can have multiple dashes and abilities in your inventory, so in the code, you can have multiple dashes stored and I dont want the player to be able to hoard infinite dashes by waiting for the star to respawn. But yeah I see what you mean, and I might make a patch on the game during this session on Friday.
*PS: There are some built-in skips to have a faster time if you are able to save dashes in some areas. Did you notice those? We weren't able to playtest with someone who is completely blind so we dont know if those actually worked.