ARC-AGI HRPO Utilities

This package houses the shared components for running ARC-AGI optimizers:

• utils/logging_utils.py – Rich console + debug helpers.
• utils/visualization.py – Grid preview helpers.
• utils/metrics.py – Metric registry + ScoreResult builders.
• utils/code_evaluator.py – Sandbox execution and evaluation cache.
• utils/prompt_loader.py – Loads the ARC prompt templates stored under prompts/.
• tasks_optimizer.py – Entry point that wires everything into HRPO.

The legacy arc_agi2_hrpo_solver.py remains as a compatibility shim and just calls into tasks_optimizer.main().