Feature: To detect the ascii drawings..

**Feature:** Currently, we can detect and block text on the screen, but ASCII character art/drawings are not handled.  
Design and implement a method to **detect and block ASCII drawings** effectively.


<img width="687" height="331" alt="Image" src="https://github.com/user-attachments/assets/f2e233c8-9353-4cf3-b9b2-e06b403f5447" />