263f39e0a3
Upgrade PyTorch to 2.7+ with cu128 wheels for Blackwell (sm_120) GPU support. Replace silero-vad (which depends on torchaudio) with a direct ONNX Runtime implementation of the same Silero VAD model, eliminating the torchaudio dependency entirely. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>