本地监控止盈止损、盘前自动连CTP，并完善保证金与推荐手数。

- 止盈止损改为程序本地监控，触发后市价平仓（含跳空）
- 交易前30分钟后台自动连接 CTP
- 保证金占用上限默认30%，可在系统设置修改
- K线标准蜡烛图红跌绿涨，费率表全宽固定表头
- 品种推荐按保证金比例×总资金计算推荐手数

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

recommend_stream.py

@@ -56,6 +56,7 @@ def start_recommend_worker(
     quote_fn: Callable[[str], Optional[dict]],
     init_tables_fn: Callable | None = None,
     get_mode_fn: Callable[[], str] | None = None,
+    get_max_margin_pct_fn: Callable[[], float] | None = None,
     interval: int = CHECK_INTERVAL_SEC,
 ) -> None:
     """后台每日刷新推荐（每小时检查一次是否需更新），并推送给 SSE 订阅者。"""
@@ -69,9 +70,12 @@ def start_recommend_worker(
                         init_tables_fn(conn)
                     capital = float(get_capital_fn(conn) or 0)
                     mode = get_mode_fn() if get_mode_fn else "simulation"
+                    max_pct = float(get_max_margin_pct_fn()) if get_max_margin_pct_fn else 30.0
                     cached = load_recommend_cache(conn)
                     if recommend_cache_stale(cached.get("updated_at")):
-                        refresh_recommend_cache(conn, capital, quote_fn, trading_mode=mode)
+                        refresh_recommend_cache(
+                            conn, capital, quote_fn, trading_mode=mode, max_margin_pct=max_pct,
+                        )
                         cached = load_recommend_cache(conn)
                         logger.info("品种推荐每日刷新完成，capital=%.2f rows=%d", capital, len(cached.get("rows") or []))
                     payload = {**cached, "capital": capital}