Fix empty recommend list and CTP premarket auto-connect.

Correct main_code order in product refresh, refresh on CTP connect, and limit reconnect to trading or premarket windows.

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

ctp_reconnect.py

@@ -12,6 +12,7 @@ import threading
 import time
 from typing import Callable
 
+from ctp_premarket_connect import should_auto_connect_now
 from ctp_settings import is_ctp_auto_connect_enabled
 from vnpy_bridge import ctp_try_auto_reconnect
 
@@ -34,7 +35,7 @@ def start_ctp_reconnect_worker(
     get_setting_fn: Callable[[str, str], str] | None = None,
     interval: int = RECONNECT_INTERVAL_SEC,
 ) -> None:
-    """定时检测 CTP 连接，断线后自动重连。"""
+    """定时检测 CTP 连接；仅在交易时段或盘前窗口内尝试重连，避免非交易时段反复登录。"""
 
     def _loop() -> None:
         while True:
@@ -42,9 +43,11 @@ def start_ctp_reconnect_worker(
                 gs = get_setting_fn
                 if gs is None:
                     from fee_specs import get_setting as gs
-                if not is_ctp_auto_connect_enabled(gs):
-                    pass
-                elif _auto_reconnect_enabled():
+                if (
+                    is_ctp_auto_connect_enabled(gs)
+                    and _auto_reconnect_enabled()
+                    and should_auto_connect_now()
+                ):
                     mode = get_mode_fn()
                     if ctp_try_auto_reconnect(mode):
                         logger.debug("CTP 连接正常 [%s]", mode)