Rewrite batch_hierarchical_softmax_actions to keep all sampling on GPU:
reshape [N,45]→[N,5,9], max-pool→[N,5] exposure Q, Gumbel-max over
exposures, parallel Gumbel-max over all sub-actions, gather chosen
exposure's sub-action. Only CPU transfer: N flat indices.
Add imagePullPolicy: Always to compile-services and compile-training
containers so rebuilt builder images are never stale-cached.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
b6b3fbd463