feat期权标的白名单：可固定只显示 ETH 或 BTC。

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

lib/options/options_cond_order_lib.py

@@ -248,6 +248,16 @@ def create_cond_order(
         return {"ok": False, "msg": "本机已有活跃条件单"}
 
     underlying = (payload.get("underlying") or "ETH").strip().upper() or "ETH"
+    try:
+        from lib.options.options_underly_lib import resolve_default_underly, underly_not_allowed_msg
+
+        if not (payload.get("underlying") or "").strip():
+            underlying = resolve_default_underly()
+        uly_block = underly_not_allowed_msg(underlying)
+        if uly_block:
+            return {"ok": False, "msg": uly_block}
+    except Exception:
+        pass
     opt_type = (payload.get("opt_type") or "P").strip().upper()
     if opt_type not in ("P", "C"):
         return {"ok": False, "msg": "opt_type 须为 P 或 C"}