Security protection of Sudoku data, solving the problem of data storage errors

Supports normal operation of Linux/SteamOS

- Optimize game storage logic - Optimize game performance

- Fixed the bug where undo caused pencil marks to appear in cells - Enhanced number outlines for identical numbers to make them more prominent - Added a new feature: "Stamp Fill." In stamp mode, you can select a number first and then a cell to fill it. The shortcut for stamp mode is the S key - Modified storage format to fix save parsing issues

Fix the bug related to cat achievements Adjust the color scheme of the "Petal" theme to be softer on the eyes Separate the theme selection and cat selection, adding a cat menu Add 3 new interchangeable cats

Fix the bug that prevents achievements from being activated Add a save backup feature Correct the error that allows the number 0 to be input using the keyboard

Fixed a series of display errors caused by Undo Adjusted the theme color to make the grid easier to identify Added Info prompt panel to prompt shortcut key information

Fixed achievement bug Fixed grid display bug Adjusted theme colors and added highlight color for selected grids

Cozy Sudoku Update Version 0.1.2.2

• Added the ability to move the selected cell using the keyboard arrow keys.
• Added number selection using the numpad.
• Fixed an issue where toggling the music setting would cause a volume change error.
• Fixed the color display error of the same number in the peer area.
• Modified the display issue for Chinese, Japanese, and Korean on dates.
• Fixed the conflict between the F12 debug function and Steam's screenshot key.

Support keyboard input:

• 1~9 Keys - Fill in numbers in the current grid
• N Key - Active/Disable Note
• Back Key - Undo
• Del Key - Clear Number