1. 修复问题：解决了不同分辨率下无法框选地块的情况。
2. 新增功能：宝箱界面支持直接输入金币数量，操作更加便捷。
3. 优化模式解锁条件：自由模式解锁条件下调，只需通过挑战模式或困难模式中的任意关卡即可开启。

相机操作
WASD键：移动相机（W上、S下、A左、D右）
鼠标中键长按拖动：平移相机
空格键：相机重置到居中位置
鼠标中键滚动：调整视野缩放

地块操作
长按鼠标左键拖动：框选多个地块
框选地块后鼠标右键：呼出操作菜单
Ctrl + A：快速框选所有地块
Ctrl + 鼠标左键单击：添加单个地块到选中区域
鼠标左键单击空白处：取消选中所有地块

Bug Fixes: Resolved the issue where tile selection failed at different resolutions.
New Feature: Added the ability to directly input coin amounts on the treasure chest interface for improved convenience.
Mode Unlock Optimization: Lowered the unlock requirements for Free Mode; it can now be accessed by completing any level in Challenge Mode or Hard Mode.

Camera Controls
WASD Keys: Move the camera (W: Up, S: Down, A: Left, D: Right)
Hold and Drag Middle Mouse Button: Pan the camera
Spacebar: Reset the camera to the center position
Scroll Mouse Wheel: Adjust the zoom level

Tile Controls
Hold down the left mouse button and drag: Select multiple tiles
Right-click after selecting tiles: Open the action menu
Ctrl + A: Quickly select all tiles
Ctrl + Left-click: Add a single tile to the selection
Left-click on an empty area: Deselect all tiles