Empirical ES MBP-10 median inter-event Δt is 74µs (not 250ms as
documented in loader.rs:25-26). The constants ALPHA_MED=0.02 and
ALPHA_SLOW=0.0005 were named/commented as "9s @ 250ms" and "6min @
250ms" but at the actual 74µs Δt their half-lives are ~2.6ms and ~100ms
— a 3000× scale mismatch.
Rename for truth-in-naming (values unchanged to preserve all trained
checkpoints):
- ALPHA_MED → ALPHA_FAST_2P6MS (half-life ~2.6ms @ 74µs Δt)
- ALPHA_SLOW → ALPHA_MED_100MS (half-life ~100ms @ 74µs Δt)
The regime[0..5] feature naming in snap_features.rs reflects the
actual microstructure-burst and 1-2-second-clustering time scales, NOT
macro 9s/6min regimes. True macro-regime EMAs (if needed) are a
separate addition.
ml-alpha lib: 33 passed, unchanged from baseline.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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