删除永续下单监控与划转强平，保留关键位监控并完成回归审计。

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

lib/trade/trade_labels_lib.py

@@ -158,12 +158,5 @@ def order_monitor_excluded_from_position_limit(conn, row) -> bool:
 
 
 def count_position_limit_active_monitors(conn) -> int:
-    try:
-        rows = conn.execute("SELECT * FROM order_monitors WHERE status='active'").fetchall()
-    except Exception:
-        return 0
-    n = 0
-    for row in rows:
-        if not order_monitor_excluded_from_position_limit(conn, row):
-            n += 1
-    return n
+    del conn
+    return 0