feat(admin): full repair of order module including list, statistics, aftersales, cashier, and write-off records with real RPC integration

services/orderService.uts

@@ -121,6 +121,13 @@ export async function fetchOrderSourceStats(startTime: string, endTime: string):
   } as any)) as any
 }
 
+export async function fetchOrderTypeStats(startTime: string, endTime: string): Promise<Array<any>> {
+  return (await rpcOrEmptyArray('rpc_admin_order_type_stats', {
+    p_start_time: startTime,
+    p_end_time: endTime
+  } as any)) as any
+}
+
 export async function getOrderSettings(): Promise<UTSJSONObject | null> {
   const res = await rpcOrValue('rpc_admin_system_config_get', {
     p_key: 'order_settings'