Stream enhance CLI processing - O(1) memory

[otto-dev]

Summary

• stream WAV IO in hop-sized chunks to avoid multi-GB buffers. Tremendous reduction in memory required.
• add chunked resampling/helpers so we can feed the model incrementally
• write enhanced samples straight to a WavWriter with delay compensation

Testing

• cargo check -p deep_filter --bin deep-filter --features "bin tract wav-utils transforms"