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

docs: Add validation results confirming all 3 checks passed and submission ready

docs: Add pre-validation checklist confirming Phase 2 readiness

Fix Phase 2 validation: Add missing graders for advanced_efficiency and expert_optimization tasks

docs: Add comprehensive submission fix summary with graders implementation details

docs: Add comprehensive graders documentation with validation details and examples

Fix: Make task graders explicitly discoverable with proper metadata and endpoints

Merge and update with latest Energy Optimization Environment

Add complete Energy & Memory RAM Optimization RL Environment

Initial code push to Hugging Face Space (no binary file)