Enable intraday range drift for metals only (XAUUSD 1500pts, XAGUSD 450pts)

Both metals sat above their daily pivot band all week (Jul 20-22) with
zero fills: the no-trade-zone guard correctly refused buy-stops too
close to price, and the once-daily pivot recalc meant the band never
re-anchored once price drifted away and stayed there. CheckRangeDrift()
already existed for this (disabled everywhere); enabling it for the two
metals lets the band re-center intraday once price drifts ~1x hourly ATR
from the midpoint, without touching FX presets which don't show this
problem.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

bo-xauusd.set

@@ -24,6 +24,16 @@ UseATRFilter=true
 ATRPeriod=14
 ATRMultiplier=2.5
 
+; === Range Drift ===
+; Daily pivot band only refreshes once per server day. Gold spent all of
+; Jul 20-22 sitting above that stale band (no fresh buy-stop could be
+; placed — no-trade-zone guard correctly refused one too close to price),
+; so the sell-side-only grid kept getting cancelled/re-placed without a
+; fill. Re-center intraday once price drifts ~1x hourly ATR from the
+; band's midpoint so both sides stay reachable.
+InpRangeDriftEnable=true
+InpMoveRangeTrigger=1500
+
 ; === Stop Loss (MANDATORY — Gold can wipe 500 pts without SL) ===
 InpUseStopLoss=true
 StopLoss=1500