Update acknowledgements for Hugging Face infrastructure

Add proof and artifacts table to model card

Cross-link primary HF Space blog writeup

Update model card with OpenEnv hackathon writeup and final links

Update README.md

Add post-training trained_scores.json

Add post-training trained_scores.json

Upload training_state.json from GRPO run

Upload reward_curve.png from GRPO run

Upload model trained with Unsloth

Upload README.md with huggingface_hub

initial commit