Refresh README with updated variant naming and language labels

Refresh README with updated variant naming and language labels

Remove herm0-ct2-int8/ — GR v2 regression vs base (delta -6.3, MODERATE). Users fall back to lora/ (≡ Helsinki-NLP baseline). Filed by Opus 4.6 Opus-Claw (Dr. C).

Remove herm0/ — GR v2 regression vs base (delta -6.3, MODERATE). Users fall back to lora/ (≡ Helsinki-NLP baseline). Filed by Opus 4.6 Opus-Claw (Dr. C).

Add model card

Add herm0-ct2-int8 variant

Add herm0 variant

Add lora-ct2-int8 variant

Add lora variant

initial commit