Audit found training binary bypasses all DQNTrainer/PpoTrainer infrastructure and explicitly disables Rainbow DQN. Design covers 6 sections: - P0: Wire train_baseline_rl.rs to Trainers - P1: PPO mixed precision + gradient accumulation + Liquid/TLOB detach fixes - P2: Mamba2 HardwareBudget + CUDA pipeline wiring + NCCL multi-GPU - P3: Ensemble parallel inference + BF16 benchmarks Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>