Rename crate: brainiac-rs -> brainiac

Full fine-tuned models: backbone+head for brainage, idh, mci, stroke (353MB each)

Delete stroke_head.safetensors with huggingface_hub

Delete mci_head.safetensors with huggingface_hub

Delete idh_head.safetensors with huggingface_hub

Delete brainage_head.safetensors with huggingface_hub

Initial release: BrainIAC ViT-B backbone + 4 downstream task heads (safetensors)

initial commit