Bug: state_reset_registry has FoldReset entries for sp22_reward_aux_align_ema
and sp22_aux_align_scale, but reset_named_state dispatch had no matching arms
-> unknown name error at first fold boundary with these registry entries.
Latent in 5106e3b117 - single-fold smoke (current train-qsltr) avoids the
trigger but any --folds 2+ run would fail.
Fix: add dispatch arms for both names. Plus elevate scale_beta cold-start
from 0 to 0.5 - a structural prior matching W [-0.5, 0, +0.5, 0] init
approach. Activates beta reward shaping with fixed magnitude from epoch 0
without waiting for Phase B6 full SP11 controller extension.
Once B6 lands (SP11 controller emits scale_beta adaptively per bounds
[0.05, 2.0]), the 0.5 prior is overwritten on first emit per
pearl_first_observation_bootstrap.
Docs updated: sp22_isv_slots.rs, state_reset_registry.rs, audit doc.
Verification: cargo check -p ml --lib clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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