The KL β controller adjusts β based on hold_frac_ema vs target:
- Hold drops below 40% → β ramps UP 5%/step (emergency)
- Hold above 60% → β decays DOWN 0.1%/step (slow relax)
- Asymmetric rates prevent oscillation
Result: Hold stabilizes at 31-62% (target 50%), entropy 1.3-1.5
(healthy), wr improves 0.15→0.33 over 5000 steps. The surfer waits
for the wave — ~50% of steps are Hold, trades are selective.
Bootstrap β=0.02, controller range [0.001, 1.0].
Hold_frac_ema α=0.05 for responsive tracking.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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