fix: stop converting Kimi balance and switch Qwen endpoint to business.aliyuncs.com

modules/balance_client.py

@@ -93,12 +93,10 @@ def fetch_kimi_balance() -> Dict[str, Any]:
         cash = float(data.get("cash_balance", 0))
         return {
             "success": True,
-            "currency": "USD",
+            "currency": payload.get("currency") or "CNY",
             "available": available,
-            "available_cny": round(available * USD_CNY_RATE, 2),
             "voucher": voucher,
             "cash": cash,
-            "rate": USD_CNY_RATE,
             "raw": payload,
         }
     except Exception as exc:  # pragma: no cover
@@ -170,7 +168,7 @@ def fetch_qwen_balance() -> Dict[str, Any]:
 
     # 按阿里云规范组装最终查询字符串（不可用 urlencode 的 quote_plus）
     query = "&".join(f"{_percent_encode(k)}={_percent_encode(v)}" for k, v in params.items())
-    url = "https://bss.aliyuncs.com/?" + query
+    url = "https://business.aliyuncs.com/?" + query
 
     payload, err = _http_get(url)
     if err: