feat: CTP/SimNow 配置迁入系统设置，登录失败即时报错

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

app.py

@@ -366,6 +366,9 @@ def init_db():
     if not get_setting("ths_refresh_token") and os.getenv("THS_REFRESH_TOKEN"):
         set_setting("ths_refresh_token", os.getenv("THS_REFRESH_TOKEN"))
 
+    from ctp_settings import seed_ctp_settings_from_env
+    seed_ctp_settings_from_env(set_setting)
+
     os.makedirs(UPLOAD_DIR, exist_ok=True)
     expire_old_plans()
 
@@ -1706,6 +1709,17 @@ def settings():
                 flash("移动保本缓冲无效")
                 return redirect(url_for("settings"))
             flash("交易模式已保存")
+        elif action == "ctp":
+            from ctp_settings import save_ctp_settings_from_form
+
+            save_ctp_settings_from_form(request.form, set_setting)
+            try:
+                from vnpy_bridge import get_bridge
+
+                get_bridge().mark_disconnected()
+            except Exception:
+                pass
+            flash("CTP 配置已保存，请在持仓监控页重连 CTP")
         elif action == "nav":
             items = {k: request.form.get(f"nav_{k}") == "on" for k in NAV_TOGGLES}
             save_nav_items(set_setting, items)
@@ -1736,11 +1750,15 @@ def settings():
         ctp_st = ctp_status(get_trading_mode(get_setting))
     except Exception:
         pass
+    from ctp_settings import get_ctp_settings_for_ui
+
     return render_template(
         "settings.html",
         webhook=webhook,
         username=username,
         quote_label=get_quote_source_label(ctp_connected=bool(ctp_st.get("connected"))),
+        ctp_status=ctp_st,
+        ctp_cfg=get_ctp_settings_for_ui(),
         trading_mode=get_setting("trading_mode", "simulation"),
         position_sizing_mode=get_setting("position_sizing_mode", "fixed"),
         fixed_lots=get_setting("fixed_lots", "1"),