merge: combine inference_v2.py into inference.py with token rewards, pipeline, and benchmarks while maintaining validation support

refactor: revert to root-level package structure with proper imports and hacky pyproject.toml setup

fix: lazy-load OpenAI imports to allow grader discovery without hanging

fix: clamp grader scores strictly between 0 and 1 for validator compliance

feat: integrate task_graders code directly into inference.py

feat: Integrate task-specific graders into inference script per hackathon rules

Add complete Energy & Memory RAM Optimization RL Environment