care-final: canonical contract + cleaned corpus retrain (2026-05-18)

Correct base model: Gemma 4 E2B (litert-community/gemma-4-E2B-it-litert-lm)

Add full model card: hackathon details, base models, training, deployment

Upload ArcFace face embedder (fine-tuned w600k_r50, fp16, 83 MB)

Upload Zekra fine-tuned Gemma 4 E2B LiteRT bundle (wi8, 5.1 GB)

initial commit