fix: 开仓时间读CTP OpenDate，止盈止损持久化且重启不丢失

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

vnpy_bridge.py

@@ -124,6 +124,7 @@ class CtpBridge:
         self._subscribed: set[str] = set()
         self._last_position_query_ts: float = 0.0
         self._position_margins: dict[str, float] = {}
+        self._position_open_times: dict[str, str] = {}
         self._margin_hooked = False
         self._tick_hooked = False
         self._bar_generators: dict[str, Any] = {}
@@ -727,6 +728,16 @@ class CtpBridge:
     def _position_margin_key(self, sym: str, direction: str) -> str:
         return f"{(sym or '').lower()}:{(direction or 'long').strip().lower()}"
 
+    def _lookup_position_open_time(self, sym: str, direction: str) -> str:
+        return (self._position_open_times.get(self._position_margin_key(sym, direction)) or "").strip()
+
+    @staticmethod
+    def _parse_ctp_open_date(raw: str) -> str:
+        s = (raw or "").strip()
+        if len(s) >= 8 and s[:8].isdigit():
+            return f"{s[:4]}-{s[4:6]}-{s[6:8]} 09:00:00"
+        return ""
+
     def _install_position_margin_hook(self) -> None:
         """拦截 CTP 持仓回报，缓存柜台 UseMargin。"""
         if self._margin_hooked or not self._engine:
@@ -758,6 +769,14 @@ class CtpBridge:
                             bridge._position_margins[k] = (
                                 bridge._position_margins.get(k, 0.0) + margin
                             )
+                        open_date = bridge._parse_ctp_open_date(
+                            str(data.get("OpenDate") or data.get("open_date") or "")
+                        )
+                        if sym and open_date:
+                            k = bridge._position_margin_key(sym, d)
+                            prev = bridge._position_open_times.get(k, "")
+                            if not prev or open_date < prev:
+                                bridge._position_open_times[k] = open_date
                 except Exception as exc:
                     logger.debug("margin hook row: %s", exc)
                 return original(data, error, reqid, last)
@@ -783,6 +802,7 @@ class CtpBridge:
             exchange = getattr(pos, "exchange", None)
             ex_name = str(exchange.value if hasattr(exchange, "value") else exchange or "")
             margin = self._lookup_position_margin(sym, d)
+            open_time = self._lookup_position_open_time(sym, d) or None
             out.append({
                 "symbol": sym,
                 "exchange": ex_name,
@@ -792,6 +812,7 @@ class CtpBridge:
                 "pnl": float(getattr(pos, "pnl", 0) or 0),
                 "frozen": int(getattr(pos, "frozen", 0) or 0),
                 "margin": round(margin, 2) if margin > 0 else None,
+                "open_time": open_time,
             })
         return out
 
@@ -809,6 +830,7 @@ class CtpBridge:
             td = getattr(gw, "td_api", None)
             if td and hasattr(td, "query_position"):
                 self._position_margins.clear()
+                self._position_open_times.clear()
                 td.query_position()
                 time.sleep(0.4)
         except Exception as exc: