docs: rename AxoMEME to HyphAeon in model card

Model card: remove em-dashes from capabilities section

Model card: add Capabilities section (predict / epistasis / phenotype)

Model card: fix rho inconsistency (base vs viral eval sets), remove em-dashes, clarify variant labeling

Model card: describe viral fine-tune data as 'viral data' (drop submission-source phrasing)

Add viral fine-tuned variant (model.viral.safetensors/.pt/.onnx) + document variants

Add AxoMEME v1 weights, config, and model card

initial commit