add

frontend/asset_assistant/lib/pages/home_page.dart

@@ -1,3 +1,4 @@
+import 'package:asset_assistant/pages/country_home.dart';
 import 'package:flutter/material.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
@@ -29,10 +30,7 @@ class _HomePageState extends State<HomePage> {
     FunctionItem(
       name: "系统",
       subFunctions: [
-        SubFunctionItem(
-          name: "国家",
-          page: const Center(child: Text("系统基本信息页面内容")),
-        ),
+        SubFunctionItem(name: "国家", page: CountryHomePage()),
         SubFunctionItem(
           name: "货币",
           page: const Center(child: Text("系统参数设置页面内容")),