Add sleep/wake detection and code cleanup

Update Python version requirement to 3.9+

Fix f-string syntax error in parser.py

Fix tests for subprocess-based terminal detection

Add GitHub Actions workflow for automated testing

Update README to reflect subprocess architecture and new defaults

Change defaults: monitor all windows and 0 second delay

Increase max_lines to 1000 for large prompts without incremental scanning

Fix memory leak by replacing NSAppleScript with subprocess execution

Fix memory growth in multi-window mode with comprehensive optimizations

Fix memory growth and focus restoration for multi-window mode

Fix multi-window monitoring AppleScript parsing errors

Add multi-window monitoring support with --all flag

Fix critical memory leak - reduce usage from 28GB to 50MB

Optimize monitoring status output by replacing consecutive lines