Move the default port to 16880.

1688 is used by MS KMS.

client/openapi-config.ts

@@ -1,7 +1,7 @@
 import { ConfigFile } from "@rtk-query/codegen-openapi";
 
 const config: ConfigFile = {
-  schemaFile: "http://[::1]:1688/openapi.json",
+  schemaFile: "http://[::1]:16880/openapi.json",
   apiFile: "./src/api/baseApi.ts",
   apiImport: "baseApi",
   outputFile: "./src/api/liberationApi.ts",

client/src/api/backend.ts

@@ -2,7 +2,7 @@ import axios from "axios";
 
 const backendAddr =
   new URL(window.location.toString()).searchParams.get("server") ??
-  "[::1]:1688";
+  "[::1]:16880";
 
 export const HTTP_URL = `http://${backendAddr}/`;