audit+fix: anti-look-ahead audit, migrate deployable config to >=12h

- trackD_lookahead_audit.py: relabel test (left==right, no labeling leak) + execution-lag
  stress -> our trend pipeline is CLEAN (4h Sharpe 1.36 robust to +1 bar lag, label-invariant)
- ADOPT conservative conclusion: deploy at 12h (sub-12h: costs/overfit dominate, slight Sharpe
  bump unreliable). 12h: Sharpe 1.32, DD 13.3%, CAGR 16.2% ~ identical and robust
- trend_portfolio: DEPLOY_TF=12h, resample_tf(rule); paper trader + tests on 12h
- calendar research (NEGATIVE, both): trackF seasonality (spurious), trackG prior-levels
  (breakouts continue, fade dead; only long-drift survivor, redundant with TP01)
- gitignore data/paper_trend runtime state

scripts/live/paper_trend.py

@@ -33,7 +33,8 @@ PROJECT_ROOT = Path(__file__).resolve().parents[2]
 sys.path.insert(0, str(PROJECT_ROOT))
 
 from src.backtest.harness import load
-from src.strategies.trend_portfolio import TrendPortfolio, CANONICAL, resample_4h, simple_returns
+from src.strategies.trend_portfolio import (
+    TrendPortfolio, CANONICAL, resample_tf, DEPLOY_TF, simple_returns)
 
 STATE_DIR = PROJECT_ROOT / "data" / "paper_trend"
 STATE_FILE = STATE_DIR / "state.json"
@@ -43,8 +44,8 @@ WEIGHT = 0.5
 INITIAL_CAPITAL = 2000.0
 
 
-def build_4h() -> dict[str, pd.DataFrame]:
-    return {a: resample_4h(load(a, "1h")) for a in ASSETS}
+def build_bars() -> dict[str, pd.DataFrame]:
+    return {a: resample_tf(load(a, "1h"), DEPLOY_TF) for a in ASSETS}
 
 
 def load_state() -> dict | None:
@@ -144,10 +145,10 @@ def print_status(st: dict, dfs: dict):
     ret = cap / st["initial_capital"] - 1
     daily = (cap - st["initial_capital"]) / days if days > 0 else 0.0
     print("=" * 72)
-    print("  PAPER TRADER — TP01 Trend Portfolio (PORT LF4h, 50/50 BTC+ETH, 4h)")
+    print(f"  PAPER TRADER — TP01 Trend Portfolio (PORT LF{DEPLOY_TF}, 50/50 BTC+ETH)")
     print("=" * 72)
     print(f"  start         {start:%Y-%m-%d %H:%M} UTC")
-    print(f"  last bar      {last:%Y-%m-%d %H:%M} UTC   ({days:.1f} giorni, {st['n_bars']} barre 4h)")
+    print(f"  last bar      {last:%Y-%m-%d %H:%M} UTC   ({days:.1f} giorni, {st['n_bars']} barre {DEPLOY_TF})")
     print(f"  capitale      {cap:,.2f} USDT   (start {st['initial_capital']:,.0f})")
     print(f"  ritorno       {ret*100:+.2f}%   |  €/giorno {daily:+.2f}   |  maxDD {st['max_dd']*100:.1f}%")
     print(f"  posizioni now { 'flat' if all(p==0 for p in st['positions'].values()) else '' }")
@@ -168,7 +169,7 @@ def print_status(st: dict, dfs: dict):
 
 def main():
     argv = sys.argv[1:]
-    dfs = build_4h()
+    dfs = build_bars()
     if "--reset" in argv:
         if STATE_FILE.exists():
             STATE_FILE.unlink()