fix: Don't invert processed DICOM files for segmentation

fix: Invert PNG/JPEG X-rays before HU conversion for accurate segmentation

refactor: Simplify segmentation to single overlay panel

fix: Use correct Hounsfield Unit range for torchxrayvision segmentation

debug: Add comprehensive logging for segmentation pipeline

fix: Add 3-panel diagnostic visualization for segmentation

fix: Lower segmentation threshold and add probability debugging

fix: Enhanced segmentation overlay with contours and better alignment

fix: Improve segmentation overlay and add DICOM support

Merge branch 'main' into tool-changes

tool changes

Fix merge conflicts

Improve style

Add parallel tool calling

fixed rexvqa benchmark and added handling for image norm for tools

final updates

refactored tools