Arduino clock+

Weekend project. The concept is to create a miniature clock for decorating a workspace with minimal functionality: two mechanical keys perform the functions of Ctrl+C and Ctrl+V. The small top button switches the time format to 24-hour and 12-hour. The small bottom button performs Alt+Tab. The encoder performs rewind when turned and play/pause when pressed.To create it, I needed:- Arduino Pro Micro board;- 0.91" 128x32 pixel LCD display;- Encoder Module KY-040;- 2 mechanical keys;- 2 6x6mm tact switches;- thin wire from an old USB cable;- USB cable for connection;- soldering iron, solder, patience, etc.I'm completely illiterate when it comes to coding; my friend gave it to me. He left comments in the code that you can use to make some adjustments. At your own risk.To set the time, you'll need to send it via serial port after uploading the sketch via Arduino IDE, using a command like "SETTIME 2025-09-18 20:10." After that, the clock will automatically keep track of the time. I don't know how to set it up differently. If anyone knows the Arduino platform and code well, please share your thoughts in the comments.