Sereact, NVIDIA, Nebius, CEVA, Zalando close training loop for robot returns

The consortium announced a closed training loop for Cortex, Sereact's robot brain, enabling faster policy updates for Zalando returns handling at CEVA Logistics fulfillment centers. NVIDIA provides simulation and world models, Nebius runs the Physical AI Workbench, and the loop reduces policy update cycles from weeks to days.