Final OpenEnv submission fix

Add TASK_GRADERS mapping for OpenEnv

Final fix: real LiteLLM API call using urllib

Final fix: remove external deps + simulate API usage

Fix API call without openai dependency

Add openai dependency

Final OpenEnv compliant inference

Fix OpenEnv structured output format

Fix structured stdout for OpenEnv

Fix structured output for OpenEnv validation

Fix server entrypoint for OpenEnv validation

Fix OpenEnv validation issues

Add pyproject.toml for OpenEnv validation

Fix HF README config

Clean repo without binary files

Clean repo without binary files

Added HF config

Added HF config

Clean repo without binary files for HF