条件单页美化，看跌/看涨自动绑定上穿/下穿。

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

app.py

@@ -356,11 +356,16 @@ def api_cond_orders_create():
         return jsonify({"ok": False, "msg": "没有可下发的客户端", "rejected": rejected})
 
     hub_order_id = (data.get("hub_order_id") or "").strip() or str(uuid.uuid4())
+    opt_type = (data.get("opt_type") or "P").strip().upper()
+    if opt_type not in ("P", "C"):
+        opt_type = "P"
+    # 左侧单:看跌上穿、看涨下穿
+    trigger_side = "gte" if opt_type == "P" else "lte"
     payload = {
         "hub_order_id": hub_order_id,
         "underlying": (data.get("underlying") or "ETH").strip().upper(),
-        "opt_type": (data.get("opt_type") or "P").strip().upper(),
-        "trigger_side": (data.get("trigger_side") or "gte").strip().lower(),
+        "opt_type": opt_type,
+        "trigger_side": trigger_side,
         "trigger_px": data.get("trigger_px"),
         "deviation_pct": data.get("deviation_pct"),
         "min_expiry_hours": data.get("min_expiry_hours"),