feat: enhance main function with improved API key handling and detailed logging for task execution

feat: update API key handling and add raw HTTP proxy support for chat completions

feat: add detailed logging for task execution in main function

feat: Enhance TutorProgressEnv with session management and improved policies

feat: enhance TutorEnv and API with new task handling and output generation

feat: enhance inference and grading logic with constraints support

add inference script to load tasks and evaluate agent performance