sha256 record of the five freshly fetched Oanda history files
(oanda_XAU_USD_{5min,15min,1h,4h}_20181031_20260807 + 1d_20180308)
that fed the walk-forward exam in walkforward/1c264d5/. Force-added
past the backtest/cache/ ignore rule so the input-data provenance
travels with the repo; the parquets themselves stay local.
Exam headline (details in 68dc76a): all 4 TFs OOS-positive at $0.65
(M5 PF 1.35, M15 1.18, H1 1.15, H4 1.52 across 26 rolling folds each);
losing folds cluster 2020H2–2023, 2023-10+ near-uniformly positive.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017FBjfomAipxvPWwRJEDDyJ
Harwinder Sekhon