fix: skip margin call deferral when OHLC extremum equals close price

When mc_size==1 and the check price (H for shorts, L for longs) equals
the close price, deferring the margin call to post-script is pointless
as no recovery is possible at the same price. Firing immediately during
OHLC ensures close_all orders see the updated position size, preventing
phantom opposite-direction trades from stale close_all quantities.

Author: wallneradam

src/pynecore/lib/strategy/__init__.py

@@ -1129,7 +1129,8 @@ def _check_margin_call(self, check_price: float, *, for_short: bool,
             margin_call_size = quantity
 
         # Deferral check: mc_size==1 at first OHLC extremum, check if AF@C<0
-        if not at_open and can_defer and margin_call_size == 1:
+        # Skip deferral when check_price == close: no recovery possible at same price
+        if not at_open and can_defer and margin_call_size == 1 and check_price != self.c:
             c_mvs = quantity * self.c
             c_open_profit = c_mvs - money_spent
             if self.sign < 0: