fix: load all HF dataset splits (validation+test), fix joblib CPU cores in container

feat: hybrid CNN training with real HF cert images + fix Dockerfile offline vars bug

feat: scale training data to 25k rows + 5k CNN images

feat: migrate to HF Spaces — ResNet-18 CNN + BERT + DistilBERT + tabular ensemble

feat: optimize for 512MB memory (Render free tier)

CREATE : Trained the model