fix(payment): rely on Huihui callback for status

backend/app/api/endpoints/finance.py

@@ -85,42 +85,6 @@ def update_order_status(order_no: str, body: dict = Body(...)):
         db.close()
 
 
-@router.post("/orders/{order_no}/refund")
-def request_refund(order_no: str, body: dict = Body(...)):
-    try:
-        data = finance_service.request_refund(
-            order_no,
-            reason=str(body.get("reason") or "").strip(),
-            operator=str(body.get("operator") or "后台管理员").strip(),
-        )
-        return ApiResponse(data=data, message="退款申请已提交")
-    except FinanceServiceError as exc:
-        _raise(exc)
-
-
-@router.get("/refunds")
-def refunds(
-    page: int = Query(1, ge=1),
-    page_size: int = Query(20, ge=1, le=100),
-    status: str = Query(""),
-):
-    db = _session()
-    try:
-        total, items = finance_service.list_refunds(db, page=page, page_size=page_size, status=status)
-        return ApiResponse(data={"total": total, "page": page, "page_size": page_size, "items": items})
-    finally:
-        db.close()
-
-
-@router.post("/refunds/{refund_no}/confirm")
-def confirm_refund(refund_no: str, body: dict = Body(...)):
-    try:
-        data = finance_service.confirm_refund(refund_no, body)
-        return ApiResponse(data=data, message="退款结果已登记")
-    except FinanceServiceError as exc:
-        _raise(exc)
-
-
 @router.get("/invoices")
 def invoices(
     page: int = Query(1, ge=1),