feat: 品种推荐与下单显示主力合约

推荐列表展示当前主力代码；下单品种支持中文/代码搜索并按交易所分组选择主力合约。

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

product_recommend.py

@@ -79,18 +79,22 @@ def assess_product_for_capital(
 
 def list_product_recommendations(
     capital: float,
-    price_fn: Callable[[str], Optional[float]],
+    quote_fn: Callable[[str], Optional[dict]],
     *,
     max_position_pct: float = 50.0,
 ) -> list[dict]:
-    """扫描全部品种并排序：推荐 > 可开 > 不足。"""
+    """扫描全部品种并排序：推荐 > 可开 > 不足。quote_fn(品种代码) -> {price, ths_code, ...}"""
 
     def _one(product: dict) -> dict:
         ths = product["ths"]
-        main_code = price_fn(ths)
-        return assess_product_for_capital(
-            product, capital, main_code, max_position_pct=max_position_pct
+        quote = quote_fn(ths) or {}
+        price = quote.get("price")
+        row = assess_product_for_capital(
+            product, capital, price, max_position_pct=max_position_pct
         )
+        main_code = (quote.get("ths_code") or "").strip()
+        row["main_code"] = main_code
+        return row
 
     with ThreadPoolExecutor(max_workers=10) as pool:
         rows = list(pool.map(_one, PRODUCTS))