cstr/granite-speech-4.1-2b-nar-GGUF

docs: add provenance / EU AI Act Art. 53 note

Drop ja from supported languages — upstream IBM cards list en/fr/de/es/pt only (issue #50)

Add F16 (5.4 GB; reference)

Add Q4_K (3.2 GB; recommended)

Add Q4_K-f16enc (2.4 GB)

README: align with base/PLUS style

Add Q4_K-mini (1.5 GB; everything quantized)

Add README

initial commit