Add pretraining script

Upload sigma_net_best.pt with huggingface_hub

Add normalization stats for tif-based AE normalization

Add 14 tif-based fingerprints for full 946/946 test tile coverage

Remove redundant ASCII diagram

Add architecture diagram to model card

Add GeoMTConvNeXt architecture diagram

Update ch3 to oracle-aligned LiDAR MNH for 1911 train tiles

Upload model.pt with huggingface_hub

Upload predictions.npz with huggingface_hub

Upload README.md with huggingface_hub

Upload inference.py with huggingface_hub

Upload model.py with huggingface_hub

initial commit