Add SHAP and learning curve to README overview and tech stack

Add SHAP explainability, learning curve and update results notebook

Update author information in README.md

Rewrite README in English with updated results and full pipeline description

Add GridSearchCV tuning, CSV inference and threshold analysis

Improve project structure, analysis depth and portfolio quality

Add cross-validation and ROC curves to training pipeline

Readme correction

Initial commit - OncoPredict ML project