Evolutionary (Optuna CMA-ES)

Optuna's [CmaEsSampler], backed by the cmaes package.

• Algorithm: CMA-ES (Covariance Matrix Adaptation Evolution Strategy).
• Warmup: the first 20% of the budget is spent on random startup trials before switching to CMA-ES.
• Good for: medium-to-high-dimensional continuous-heavy problems.
• Dependencies: optuna, cmaes.