feat: Add HFDatasetRepoManager for Hugging Face dataset repo management

there-is-already-a-branch (#1)

Upload folder using huggingface_hub

refactor(app): improve code formatting and add background ingestion status display

another try.

trying updated datasets ran through our ingest

again. i am so bad at this. lol.

Fix syntax errors in app.py preventing Gradio app startup on HF Spaces

staged changes are still showing even after forced push.