9c72e90ce2
Five independent tests at 1-pip cost (M15 wide-open both windows, transitioning-slice OOS, mean-reversion trade sims, forward-return screens on M15+M5, H1 both windows) — nothing clears cost in both 2024-25 and 2025-26. Root cause: spread is ~10% of M15 ATR on EUR. EUR stays out of scan_pairs; open avenues documented in docstring.