Use 100k equity for recommend list when CTP is offline.

When SimNow or live CTP is disconnected, the tradable-products section shows four whitelisted symbols and calculates max lots from a fixed 100,000 capital instead of reference capital in settings.

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

trading_context.py

@@ -91,6 +91,15 @@ def get_account_capital(conn, get_setting: Callable[[str, str], str]) -> float:
         return 0.0
 
 
+def get_recommend_capital(conn, get_setting: Callable[[str, str], str]) -> float:
+    """可开仓品种表用权益：已连接 CTP 用柜台权益，未连接固定 10 万。"""
+    from product_recommend import DISCONNECTED_RECOMMEND_CAPITAL
+
+    if is_ctp_connected(get_setting):
+        return get_account_capital(conn, get_setting)
+    return float(DISCONNECTED_RECOMMEND_CAPITAL)
+
+
 def is_ctp_connected(get_setting: Callable[[str, str], str]) -> bool:
     """当前交易模式（SimNow / 实盘）是否已连接 CTP。"""
     try: