Limit tradable products to four varieties for accounts at or below 100k.

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

product_recommend.py

@@ -18,6 +18,52 @@ from symbols import PRODUCTS, product_category, product_has_night_session
 
 logger = logging.getLogger(__name__)
 
+# 权益低于该值时，仅允许下列品种（可开仓列表、品种下拉、开仓报单）
+SMALL_ACCOUNT_CAPITAL_MAX = 100_000.0
+SMALL_ACCOUNT_PRODUCT_THS = frozenset({"c", "m", "MA", "rb"})
+SMALL_ACCOUNT_SCOPE_LABEL = "玉米、豆粕、甲醇、螺纹钢"
+
+
+def normalize_product_ths(ths: str) -> str:
+    import re
+    s = (ths or "").strip()
+    m = re.match(r"^([A-Za-z]+)", s)
+    return m.group(1) if m else s
+
+
+def is_small_account(capital: float) -> bool:
+    cap = float(capital or 0)
+    return 0 < cap <= SMALL_ACCOUNT_CAPITAL_MAX
+
+
+def product_in_small_account_whitelist(ths_or_product) -> bool:
+    if isinstance(ths_or_product, dict):
+        key = (ths_or_product.get("ths") or "").strip()
+    else:
+        key = normalize_product_ths(str(ths_or_product or ""))
+    if not key:
+        return False
+    root = normalize_product_ths(key)
+    if root in SMALL_ACCOUNT_PRODUCT_THS:
+        return True
+    upper = root.upper()
+    return upper in {x.upper() for x in SMALL_ACCOUNT_PRODUCT_THS}
+
+
+def assert_product_allowed_for_capital(ths: str, capital: float) -> Optional[str]:
+    """小账户品种白名单校验；通过返回 None。"""
+    if not is_small_account(capital):
+        return None
+    if product_in_small_account_whitelist(ths):
+        return None
+    return f"权益 10 万以下仅可交易：{SMALL_ACCOUNT_SCOPE_LABEL}"
+
+
+def filter_products_for_capital(products: list[dict], capital: float) -> list[dict]:
+    if not is_small_account(capital):
+        return list(products)
+    return [p for p in products if product_in_small_account_whitelist(p)]
+
 
 def _attach_turnover(row: dict) -> None:
     """成交额 = 昨日成交量(手) × 昨收 × 合约乘数。"""
@@ -60,6 +106,23 @@ def assess_product_for_capital(
     cap = float(capital or 0)
     margin_pct = max(1.0, min(100.0, float(max_margin_pct or 30.0)))
 
+    if is_small_account(cap) and not product_in_small_account_whitelist(product):
+        return {
+            "ths": ths,
+            "name": name,
+            "exchange": exchange,
+            "category": category,
+            "mult": spec["mult"],
+            "tick_size": tick,
+            "status": "blocked",
+            "status_label": f"10万以下限{SMALL_ACCOUNT_SCOPE_LABEL}",
+            "min_capital_one_lot": None,
+            "margin_one_lot": None,
+            "max_lots": 0,
+            "risk_one_lot_1pct": None,
+            "has_night_session": product_has_night_session(product),
+        }
+
     if p <= 0:
         return {
             "ths": ths,
@@ -173,5 +236,6 @@ def list_product_recommendations(
             }
 
     with ThreadPoolExecutor(max_workers=10) as pool:
-        rows = list(pool.map(_one, PRODUCTS))
+        products = filter_products_for_capital(PRODUCTS, capital)
+        rows = list(pool.map(_one, products))
     return sort_recommend_by_trend(rows)