Fixing some bugs and lowering the difficulty level of the puzzle in Chapter 1. — 悠卡和她的夏天 Steam update #500324

I noticed that the difficulty of the puzzle game in Chapter 1 may be too high, causing players to give up. To address this issue, I will redesign the key puzzle in Chapter 1. Originally, it required finding three keys, but now it has been changed to only needing to find two keys, with the addition of a generator switch element. These changes will help guide players through the puzzle more quickly. Additionally, I have added some new guiding elements in Chapter 2 - Theoretical World. I hope that these adjustments will enhance the players' gaming experience.