Add CTP auto-connect toggle to stop off-hours reconnect attempts.

When disabled, disconnect immediately and skip auto-reconnect, premarket connect, and TCP probes that fail outside SimNow trading hours.

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

app.py

@@ -1788,9 +1788,24 @@ def settings():
                 return redirect(url_for("settings"))
             flash("交易模式已保存")
         elif action == "ctp":
+            from ctp_settings import save_ctp_auto_connect, is_ctp_auto_connect_enabled
             from ctp_settings import save_ctp_settings_from_form
+            from vnpy_bridge import ctp_disconnect
 
+            was_enabled = is_ctp_auto_connect_enabled(get_setting)
+            auto_enabled = save_ctp_auto_connect(request.form, set_setting)
             save_result = save_ctp_settings_from_form(request.form, set_setting)
+            if not auto_enabled:
+                ctp_disconnect(set_disabled_hint=True)
+            elif not was_enabled and auto_enabled:
+                try:
+                    from vnpy_bridge import get_bridge
+                    from trading_context import get_trading_mode
+
+                    mode = get_trading_mode(get_setting)
+                    get_bridge().reconnect_after_settings_saved(mode)
+                except Exception as exc:
+                    app.logger.debug("CTP connect after enable auto: %s", exc)
             pwd_updated = save_result.get("passwords_updated") or []
             pwd_empty = save_result.get("passwords_submitted_empty") or []
             simnow_pwd_len = len((request.form.get("simnow_password") or "").strip())
@@ -1816,6 +1831,12 @@ def settings():
                 pwd_note = "实盘交易密码未改（提交为空）"
             else:
                 pwd_note = ""
+            if not auto_enabled:
+                flash("CTP 配置已保存；自动连接已关闭，所有 CTP 连接已断开")
+                return redirect(url_for("settings"))
+            if not was_enabled:
+                flash("CTP 配置已保存；自动连接已开启，正在连接…")
+                return redirect(url_for("settings"))
             flash_msg = "CTP 配置已保存，正在使用新地址重连…"
             if pwd_note:
                 flash_msg = f"CTP 配置已保存；{pwd_note}，正在重连…"
@@ -1864,7 +1885,7 @@ def settings():
         ctp_st = ctp_status(get_trading_mode(get_setting))
     except Exception:
         pass
-    from ctp_settings import get_ctp_settings_for_ui
+    from ctp_settings import get_ctp_settings_for_ui, is_ctp_auto_connect_enabled
 
     return render_template(
         "settings.html",
@@ -1873,6 +1894,7 @@ def settings():
         quote_label=get_quote_source_label(ctp_connected=bool(ctp_st.get("connected"))),
         ctp_status=ctp_st,
         ctp_cfg=get_ctp_settings_for_ui(),
+        ctp_auto_connect=is_ctp_auto_connect_enabled(get_setting),
         trading_mode=get_setting("trading_mode", "simulation"),
         position_sizing_mode=get_setting("position_sizing_mode", "fixed"),
         fixed_lots=get_setting("fixed_lots", "1"),