Normalize README Source provenance table and standard disclaimers

Normalize README Source provenance table across repos

Document source revision and export/quant provenance in README

Refine model card metadata from source docs

Add model card metadata

Upload df_dec.onnx with huggingface_hub

Upload erb_dec.onnx with huggingface_hub

Upload enc.onnx with huggingface_hub

initial commit