Revolutionizing Cloud Storage with SDAR Gate: One Seamless Sigmoid Solution

Recap. Part 1 framed the problem (trajectory reward is too coarse for multi-step agents) and SDAR's fix (a privileged teacher gives dense token-level guidance, filtered through a gate). Part 2 put the four-model system on AWS and counted the GPU cost. This part is the payoff: the actual gate, in PyT