Reward augmentation now ISV-driven (slot 579, bootstrap 0.005).
Gradient KL β reduced to 0.003 (gentle nudge, not straitjacket).
Adaptive β controller disabled — overshoots consistently.
At b=16 (1 done/step), KL dominates sparse PPO signal → Hold=100%.
At b=1024 (60 dones/step), the done-gated PPO signal is 60× denser
and should balance with the gentle KL without collapse. The b=1024
run without KL (done-gated only) showed qpa=0.84, ent=2.04, wr=0.34
stable at 25k steps — the best metrics yet.
Removed dead code from normalize_advantages.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>