Re-enable screen edge detection for togi animations

[james-livefront]

Restore the commented-out code that makes the cat scratch at screen edges when it reaches them.

Background:
There is currently commented-out code in the application that handles screen edge detection. This feature made the cat perform scratching animations when it reached screen boundaries.

Acceptance Criteria:

• Review and understand the commented edge detection code
• Test edge detection functionality
• Ensure it works properly with current macOS versions
• Update for modern display APIs if needed

Labels: enhancement, feature