fp16 conversion of csukuangfj2/sherpa-onnx-nemo-parakeet-unified-en-0.6b-streaming-560ms
(buffered/unified streaming export; same layout, .fp16 suffix), via onnxruntime's
transformers.float16 converter (keep_io_types=True). Transcripts verified identical to fp32
end-to-end on DirectML; half the download/VRAM. Made for WinSTT.
