fix: rename 2.3B → 2.7B (post-subsumination actual count)

rename weights to 0.1-alpha versioning

Upload imprint/Anvaya-Rabbit-2.3b-imprint.pt with huggingface_hub

Delete imprint/sft_final.pt with huggingface_hub

Delete imprint/sft_epoch3.pt with huggingface_hub

Delete imprint/sft_epoch2.pt with huggingface_hub

Delete imprint/sft_epoch1.pt with huggingface_hub

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