Rebrand product and enhance tradable symbols table with spec columns and K-line links.

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

product_recommend.py

@@ -66,6 +66,8 @@ def assess_product_for_capital(
             "name": name,
             "exchange": exchange,
             "category": category,
+            "mult": mult,
+            "tick_size": tick,
             "status": "no_price",
             "status_label": "暂无行情",
             "min_capital_one_lot": None,
@@ -153,11 +155,14 @@ def list_product_recommendations(
             return row
         except Exception as exc:
             logger.warning("recommend product failed %s: %s", ths, exc)
+            spec = get_contract_spec(ths + "8888")
             return {
                 "ths": ths,
                 "name": product.get("name") or ths,
                 "exchange": product.get("exchange") or "",
                 "category": product.get("category") or product_category(ths),
+                "mult": spec["mult"],
+                "tick_size": float(spec.get("tick_size") or 1.0),
                 "status": "no_price",
                 "status_label": "计算失败",
                 "main_code": "",