Fix slow CTP position sync after restart and link positions to 15m K-line.

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

vnpy_bridge.py

@@ -73,6 +73,8 @@ def _load_persisted_last_error() -> str:
     return (get_setting(CTP_LAST_ERROR_KEY, "") or "").strip()
 
 _position_refresh_callback: Optional[Callable[[], None]] = None
+_position_refresh_debounce_lock = threading.Lock()
+_position_refresh_debounce_ts: float = 0.0
 
 
 def set_position_refresh_callback(fn: Optional[Callable[[], None]]) -> None:
@@ -89,6 +91,23 @@ def _fire_position_refresh_callback() -> None:
     except Exception as exc:
         logger.debug("position refresh callback: %s", exc)
 
+
+def _fire_position_refresh_callback_debounced(*, min_interval: float = 0.35) -> None:
+    global _position_refresh_debounce_ts
+    now = time.monotonic()
+    with _position_refresh_debounce_lock:
+        if now - _position_refresh_debounce_ts < min_interval:
+            return
+        _position_refresh_debounce_ts = now
+    _fire_position_refresh_callback()
+
+
+def _fire_position_refresh_burst() -> None:
+    """连接后持仓回报可能分批到达，分多次触发快照刷新。"""
+    _fire_position_refresh_callback()
+    for delay in (1.5, 4.0, 10.0, 25.0):
+        threading.Timer(delay, _fire_position_refresh_callback).start()
+
 _bridge: Optional["CtpBridge"] = None
 _bridge_lock = threading.Lock()
 _ctp_td_lock = threading.RLock()
@@ -203,6 +222,7 @@ class CtpBridge:
         self._last_trade_query_ts: float = 0.0
         self._last_connect_ok_ts: float = 0.0
         self._tick_hooked = False
+        self._position_hooked = False
         self._bar_generators: dict[str, Any] = {}
         self._bars_1m: dict[str, deque] = {}
         self._init_engine()
@@ -217,11 +237,26 @@ class CtpBridge:
             self._ee = EventEngine()
             self._engine = MainEngine(self._ee)
             self._engine.add_gateway(CtpGateway)
+            self._ensure_position_event_hook()
         except ImportError:
             self._last_error = "未安装 vnpy / vnpy_ctp，请 pip install vnpy vnpy_ctp"
         except Exception as exc:
             self._last_error = str(exc)
 
+    def _ensure_position_event_hook(self) -> None:
+        if self._position_hooked or not self._ee:
+            return
+        try:
+            from vnpy.trader.event import EVENT_POSITION
+        except ImportError:
+            return
+
+        def _on_position(_event) -> None:
+            _fire_position_refresh_callback_debounced()
+
+        self._ee.register(EVENT_POSITION, _on_position)
+        self._position_hooked = True
+
     def available(self) -> bool:
         return self._engine is not None
 
@@ -414,7 +449,7 @@ class CtpBridge:
                                         mode, self._td_logged_in(),
                                         len(self._engine.get_all_accounts() or []))
                             self._schedule_fee_sync(mode)
-                            _fire_position_refresh_callback()
+                            _fire_position_refresh_burst()
                             return
                     finally:
                         self._ee.unregister(EVENT_LOG, _on_log)