Export only hard lesion masks

Add editor NIfTI download and float32 exports

Keep mask editor layer aligned

Enable GPU inference and reset editor on load

Make mask editor save slices explicitly

Replace mask editor click hack with ImageEditor

Add feature-flagged experimental mask editor scaffold

Trim skull-edge segmentation artifacts with boundary-aware cleanup

Mask lesion predictions to MNI brain volume

Save inference outputs to mounted persistent storage

Fix HF model repo downloads for root-level artifacts

Use ARC_ATLAS_v3.1 HF model repo for Space inference

Fix SAM attention softmax rank for CPU inference stability

Auto-preload default ARC_ATLAS V3 model from HF for inference

Add HF dataset model artifact sync for lesion inference

Add Streamlit lesion inference panel and ignore local artifacts