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-xagusd.set

@@ -29,6 +29,13 @@ ATRMultiplier=2.2
 ; of 30 blocked every cycle. 60 clears normal spread, still blocks blowouts.
 InpMaxSpreadPoints=60
 
+; === Range Drift ===
+; Same issue as gold — stale daily band left silver sell-only and unfilled
+; all week. Re-center intraday once price drifts ~1x hourly ATR from the
+; band's midpoint (silver ATR ~0.4-0.5 -> ~400-500pts at 0.001 point size).
+InpRangeDriftEnable=true
+InpMoveRangeTrigger=450
+
 ; === Stop Loss (MANDATORY) ===
 InpUseStopLoss=true
 StopLoss=1000