The WIP markers on those quests were actually just placeholder labels I forgot to remove — they're fully completed content, sorry for the confusion!
Chapter 2 will use a separate save system. I'm also planning to make future chapters lighter so they can be hosted directly on itch.io, and possibly playable in the browser for better compatibility.
As for the laptop bug, I've noted it and it will be fixed in the next update. Thanks for the report! 🖤