RAPL Energy Estimation

Estimate energy consumption (joules/inference) using Intel RAPL or TDP-based fallback. Measures per-workload energy, converts to CO2 grams using US grid average, and produces a JSON efficiency report.

Device: x86_64

cargo run --example monitoring_energy_estimation

Key concepts: Intel RAPL interface, TDP-based estimation fallback, joules-to-CO2 conversion, Green AI metrics.