- New scripts/alpha_pipeline.sh: orchestrates the 2-quarter validation
after fxcache lands. Auto-discovers the Q1+Q2 fxcache (newest
.fxcache excluding the known Q1-only hash), trains
alpha_train_stacker on it, then sweeps 4 conditions
(baseline / +cost-rand / +regime-scale / +both) × 3 walk-forward
folds, aggregating mean ± stddev Sharpe per cost across folds.
No phase prefixes in name or contents — the script is meant to
outlive any single milestone.
- scripts/build_2q_fxcache.sh: fix staging layout so MBP-10 / trades
/ OHLCV symlinks live in the symbol subdir (`mbp10/ES.FUT/...`)
that precompute_features expects. Previous flat-layout build
aborted with "MBP-10 directory not found: .../mbp10/ES.FUT".
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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