feat: 持仓监控数据库优先显示，修复开仓重复与同步前空白

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

sl_tp_guard.py

@@ -464,8 +464,8 @@ def cancel_monitor_exit_orders(
     return cancelled
 
 
-def reconcile_monitors_without_position(conn, mode: str) -> int:
-    """持仓已平时：关闭监控并撤销残留止盈止损挂单。"""
+def reconcile_monitors_without_position(conn, mode: str, *, grace_sec: int = 120) -> int:
+    """持仓已平时：关闭监控并撤销残留止盈止损挂单（新开仓 grace_sec 内不清理）。"""
     if not ctp_status(mode).get("connected"):
         return 0
     positions = ctp_list_positions(mode)
@@ -477,9 +477,26 @@ def reconcile_monitors_without_position(conn, mode: str) -> int:
         direction = p.get("direction") or "long"
         position_keys.add((sym, direction))
 
+    now_ts = time.time()
+
+    def _monitor_within_grace(mon: dict) -> bool:
+        raw = (mon.get("open_time") or mon.get("created_at") or "").strip()
+        if not raw:
+            return True
+        for fmt in ("%Y-%m-%d %H:%M:%S", "%Y-%m-%dT%H:%M:%S", "%Y-%m-%dT%H:%M"):
+            try:
+                dt = datetime.strptime(raw[:19], fmt)
+                if (now_ts - dt.timestamp()) <= grace_sec:
+                    return True
+            except ValueError:
+                continue
+        return False
+
     closed = 0
     for r in conn.execute("SELECT * FROM trade_order_monitors WHERE status='active'").fetchall():
         mon = dict(r)
+        if _monitor_within_grace(mon):
+            continue
         ms = mon.get("symbol") or ""
         md = mon.get("direction") or "long"
         matched = False