Hugging Face Hub enables fastai model publishing via push_to_hub_fastai and from_pretrained_fastai

AI Impact Summary

fastai has been integrated with Hugging Face Hub, enabling publishing a fastai Learner to the Hub with a single Python call using push_to_hub_fastai. The workflow relies on the huggingface_hub client, notebook_login or CLI login, and a repo_id in the namespace/repo format, and it can auto-create a model card and store artifacts with git-lfs. It also exposes from_pretrained_fastai for loading Hub-hosted Learners and supports Blurr workflows that combine fastai with transformers. This capability lowers onboarding friction for fastai users, improves model discoverability, and strengthens reproducibility across teams.