pushblock/simple-v0: re-record with the action-label gap fix (46.6% of rows held a placeholder 0); band U(3.25,4.75) unchanged

pushblock/simple-v0: fixed-T -> per-episode softmax-temperature-range tier (T~U(3.25,4.75) per episode, step-reward norm 0.6025)

pushblock/simple-v0: replace epsilon tier with softmax-temperature tier (T=4.15, step-reward calibrated)

feat(pushblock): simple tier, per-episode epsilon pool