v5.6: Thursday wind-down + Friday shadow metric

Wind-down (Thu 19:00 server = Thu noon ET -> weekend close): cancel
entry pendings, no new grids, trail tightened to 200/150pts so open
positions walk out at their natural end instead of being chopped at the
midnight deadline. Hard close unchanged as backstop.

Shadow metric: first tick of each new server week, every EA reports what
its weekend-flattened positions would have done through Friday (MTM at
Friday's last H1 close + worst adverse excursion) — quantifies the cost
of the no-Friday policy from live data.

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

bo-eurusd.set

@@ -54,6 +54,12 @@ InpWeekendCloseHour=7
 InpCancelPendingBeforeWeekend=true
 InpMondayStartHour=7
 
+; === Thursday Wind-Down ===
+InpUseWinddown=true
+InpWinddownStartHour=19
+InpWinddownTrailStart=200
+InpWinddownTrailStop=150
+
 ; === EA Settings ===
 MagicNum=444001