- ppo_checkpoint_roundtrip_test: save/load PPO model, verify predictions
match within 1e-6 tolerance (validated: max diff 3.73e-8)
- ppo_hyperopt_validation_test: 5-trial PSO optimization with 11
assertions covering convergence, param bounds, and result structure
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>