Replace opencv-python with scikit-image for Python 3.14 compatibility #2
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Replace the heavyweight opencv-python dependency with scikit-image for better Python 3.14 compatibility. The preprocess_image function now uses Pillow for grayscale conversion and scikit-image's threshold_otsu for Otsu thresholding, maintaining identical functionality with a lighter dependency footprint (~15MB vs ~50MB).
- Fix isort import ordering in ocr.py (skimage after PIL) - Add Python 3.14 to CI test matrix - Add Python 3.14 to pyproject.toml classifiers
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Summary
Motivation
opencv-python has compatibility issues with Python 3.14. scikit-image is lighter (~15MB vs ~50MB) and provides the same Otsu thresholding functionality.
Test plan