- Add adaptive det_size selection based on image characteristics
(portraits use 640, landscapes use 1024)
- Add FaceServiceError for better error handling in face detection
- Add benchmark UI for comparing faces between two images
- Extract face_area() helper to eliminate duplicate sorting logic
- Modernize type hints (List -> list, Tuple -> tuple)
- Add processed_width/height to embed responses
- Add embedding dimension validation
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
