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James Pine
2e95b7c5d8
Qwen TTS and Whisper Base make network calls to HuggingFace even when model weights are fully cached locally, because from_pretrained() defaults to local_files_only=False. This causes failures for offline users. Add a reusable force_offline_if_cached() context manager that sets HF_HUB_OFFLINE=1 during model loading when is_model_cached() is True. Applied to all four affected load paths: - PyTorchTTSBackend (Qwen TTS) - PyTorchSTTBackend (Whisper) - MLXTTSBackend (refactored from inline implementation) - MLXSTTBackend (previously unprotected) Closes #82