hybrid edge-margin policy (edge_threshold + entry_price_max cap) — BTC +$1247

raise entry_price_max cap to $0.60 (more coverage, trades can enter pricier tokens)

fix KeyError: directional-mode diagnostics (no more entered/hedged/exit_type columns)

directional classifier: predict UP wins + price-aware trading (lower ask = better EV)

label v4 baseline run: post-hoc optimal hedge ceiling, no policy Optuna

add policy-parameter Optuna: tune (entry_thr, combined_thr, min_tick) before classifier

v1_arb: simulate real live policy (entry ≤$0.40, hedge at combined ≤$0.80)

label v4: entry FIXED at tick 120, hedge scan [121,899], threshold=$20

label: entries scan [120,899] (live reality) + threshold=$70 (75%ile)

label: min_entry_tick=120 (no leakage) + threshold=$10 + pnl distribution log

stream orderbook row-groups via pyarrow (fix OOM, peak 5MB/slug)

log full traceback on window error (debug float/int conversion)

batch-load orderbook (fix OOM on 37GB BTC parquet)

v1_arb trainer code for sol