v1.0.3

v1.0.3 — entrypoint mirrors HUGGINGFACE_TOKEN ↔ HF_TOKEN

huggingface_hub reads HF_TOKEN as canonical; audiolla's older docs use
HUGGINGFACE_TOKEN. Setting one name now unlocks the other so gated
downloads (stable-audio-open, musicgen-small, musicgen-medium,
pyannote) work regardless of which env var the operator picked.

No code path changes — environment normalization only.