Deploy Option A: Transition HF Space to lightweight OpenEnv Server

Fix: Switch to official unsloth/unsloth base image for maximum stability

Fix: upgrade base image to PyTorch 2.6.0 for torch.int1 / torchao compat

Fix: stop pinning transformers/peft/accelerate over Unsloth's versions

Fix TRL version conflict: remove trl==0.12.1 pin that broke GRPOConfig import

Fix: Enable unbuffered logging for real-time training monitoring

Fix: Add libaio-dev and reorder pip installs for Unsloth stability

Fix: Pin stable versions to resolve 2026 experimental package conflicts

Fix: Upgrade to PyTorch 2.5.1 to resolve compatibility issues

Fix: Use robust PyTorch base image in Dockerfile

Initial clean deploy commit