This commit includes:
- Refactored modules/ui.py: Live webcam preview loop now uses ROOT.after() for better UI responsiveness and potentially smoother external capture.
- Refactored modules/video_capture.py: Implemented threaded, non-blocking frame reads for improved camera capture performance and stability.
- Feature: Ear preservation for Poisson blending to reduce artifacts (controlled by --preserve-ears and related globals).
- Feature: Histogram-based color correction (--color-correction).
- Feature: Poisson blending for smoother face integration (--poisson-blending).
These changes aim to improve overall swap quality, UI stability, and address reported FPS issues with external capture tools like SplitCam.