fix: SHFE止盈止损平仓改平今并限制重复报单

Co-authored-by: Cursor <cursoragent@cursor.com>

vnpy_bridge.py

@@ -298,10 +298,15 @@ class CtpBridge:
     def _resolve_close_offset(self, sym: str, ex_name: str, hold_direction: str, lots: int) -> Any:
         from vnpy.trader.constant import Offset
 
-        if ex_name not in ("CZCE", "CFFEX"):
+        ex_u = (ex_name or "").upper()
+        # 上期所/能源中心/郑商所/中金所须区分平今/平昨；大商所等可用通用 CLOSE
+        if ex_u not in ("CZCE", "CFFEX", "SHFE", "INE"):
             return Offset.CLOSE
-        pos = self._find_position(sym, ex_name, hold_direction)
+        pos = self._find_position(sym, ex_u, hold_direction)
         if not pos:
+            # 找不到持仓明细时，日盘新开仓优先平今（避免 SHFE「平昨仓位不足」）
+            if ex_u in ("SHFE", "INE", "CZCE"):
+                return Offset.CLOSETODAY
             return Offset.CLOSE
         vol = int(getattr(pos, "volume", 0) or 0)
         yd = int(getattr(pos, "yd_volume", 0) or 0)