Capping the pass at m_etaCeiling was not enough. Measured on the first two live
runs: USDCAD 0.00085 over 13,335 bars, EURUSD 0.00242 over 15,041 - a 3x spread
across charts, because a chart whose plateau ladder reset recently still carries
a high eta and the cap never bound.
The slice turns out to be roughly HALF the data, not a tail, so one pass over it
at the model's own rate is a full training epoch on a model that has already been
selected and certified. That is materially more than the 'just a bit finer
weights' this was asked for.
OOS_FINAL_PASS_ETA_SCALE (0.25) now scales the rate. Scaling rather than
shortening the pass keeps the whole slice in play - seeing the held-out bars at
all is the point - while making the step proportionate to an already-selected
model.
USDCAD and EURUSD have already taken the unscaled pass; that is not reversible
without a retrain. USDJPY has not converged yet and will get the corrected one.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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