Update model card: add transcribe_cpp metadata block (raw WER/RTF + capabilities)

Re-quantize with corrected file_type/trailer KV ordering

Reconvert: refresh general.* identity + translation KVs + streaming KV layout

Add Metal non-determinism note to WER methodology

Update WER table from new test-clean sweep (transcribe.cpp 4d2270e)

Regenerate quants from upstream HF rev 973afd24965f72e36ca33b3055d56a652f456b4d

Initial GGUF release

initial commit