🎯 Gap Analysis
Before: none. After: cs_zscore_vol (0.054, 0.922), adv_term_struct (0.043, 0.941)
Before: momentum_5d (0.992, IC=0.010). After: open_vwap_dev (0.994, IC=0.020)
Target for next iteration: combine cs_zscore_vol + ts_rank_vol patterns
Current best: 0.0581 (hl_range). Need novel range or multi-signal formula.