feat:更新个人主页模块

lib/provider/user_provider.dart

@@ -0,0 +1,28 @@
+import 'package:flutter/material.dart';
+import 'package:food_hub_app/apis/user.dart';
+import 'package:food_hub_app/models/session.dart';
+
+class UserProvider with ChangeNotifier {
+  late User currentUser = User.getEmpty();
+  bool isLoading = false;
+  String error = '';
+
+  Future<void> refreshUser(int id) async {
+    if (isLoading) return;
+
+    try {
+      isLoading = true;
+      error = '';
+      notifyListeners();
+
+      final result = await queryUserApi(id);
+      currentUser = result;
+    } catch (e) {
+      error = '加载数据失败: $e';
+      debugPrint('加载数据失败: $e');
+    } finally {
+      isLoading = false;
+      notifyListeners();
+    }
+  }
+}