Upload reference/vfast.summary.json with huggingface_hub

Upload reference/deepgram_nova3.summary.json with huggingface_hub

add vfast reference run

add Deepgram nova-3 reference run

fix whisper normalizer constructor compatibility

quick start: use the runnable harness; drop duplicated tier prose

document the vendor-neutral benchmark harness

squash: clean history after accidental venv upload