fix: move css= to launch() per Gradio 6 API

fix: mobile freeze — single demo.load, no force_download, lazy admin, no spinners

fix: mobile responsiveness — card layout, CSS fixes, better touch targets

Add vrom_hub/cli.py

Add vrom_hub/hub.py

Add vrom_hub/hnsw.py

Add vrom_hub/fetcher.py

Add vrom_hub/embedder.py

Add vrom_hub/chunker.py

Add vrom_hub/__main__.py

Add vrom_hub/__init__.py

Add app.py and vrom_hub backend package

Initial Space setup: README with OAuth config

Add requirements.txt

initial commit