Fix: DRModel attribute names match notebook checkpoint (backbone/head_cls/head_coral/dict return) — weights now load correctly; GradCAM aug_smooth=False; lesion ROI max area cap

fix: real fundus images no longer rejected + robust model loading

fix: correct 4 runtime errors in inference pipeline

Update model_loader.py

Update model_loader.py

Update model_loader.py

fix: inject CalibrationBundle into __main__ for pickle compat

fix: calibration unpickler

Update model_loader.py

Update model_loader.py

Update model_loader.py

Update model_loader.py

Rename Model loader.py to model_loader.py