新增：更新个人中心数据显示

lib/app.dart

@@ -83,7 +83,7 @@ class _MainScaffold extends StatelessWidget {
         children: [
           const HomeScreen(),
           GalleryScreen(isActive: currentTab == NavTab.gallery),
-          const ProfileScreen(),
+          ProfileScreen(isActive: currentTab == NavTab.profile),
         ],
       ),
       bottomNavigationBar: BottomNavBar(

lib/core/auth/auth_service.dart

@@ -118,6 +118,14 @@ class AuthService {
           UserState.setUserId(uid);
           _log('init: 已设置 userId');
         }
+        final avatarUrl = data?['realm'] as String?;
+        if (avatarUrl != null && avatarUrl.isNotEmpty) {
+          UserState.setAvatar(avatarUrl);
+        }
+        final name = data?['terminal'] as String?;
+        if (name != null && name.isNotEmpty) {
+          UserState.setUserName(name);
+        }
       } else {
         _log('init: 登录失败');
       }

lib/core/user/user_state.dart

@@ -6,6 +6,8 @@ class UserState {
 
   static final ValueNotifier<int?> credits = ValueNotifier<int?>(null);
   static final ValueNotifier<String?> userId = ValueNotifier<String?>(null);
+  static final ValueNotifier<String?> avatar = ValueNotifier<String?>(null);
+  static final ValueNotifier<String?> userName = ValueNotifier<String?>(null);
 
   static void setCredits(int? value) {
     credits.value = value;
@@ -15,6 +17,14 @@ class UserState {
     userId.value = value;
   }
 
+  static void setAvatar(String? value) {
+    avatar.value = value;
+  }
+
+  static void setUserName(String? value) {
+    userName.value = value;
+  }
+
   static String formatCredits(int? value) {
     if (value == null) return '--';
     return value.toString().replaceAllMapped(

lib/features/profile/profile_screen.dart

@@ -1,14 +1,63 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_lucide/flutter_lucide.dart';
+import 'package:cached_network_image/cached_network_image.dart';
 
+import '../../core/api/api_config.dart';
+import '../../core/api/services/user_api.dart';
+import '../../core/auth/auth_service.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/user/user_state.dart';
 import '../../core/theme/app_spacing.dart';
 import '../../core/theme/app_typography.dart';
 
 /// Profile screen - matches Pencil KXeow
-class ProfileScreen extends StatelessWidget {
-  const ProfileScreen({super.key});
+class ProfileScreen extends StatefulWidget {
+  const ProfileScreen({super.key, required this.isActive});
+
+  final bool isActive;
+
+  @override
+  State<ProfileScreen> createState() => _ProfileScreenState();
+}
+
+class _ProfileScreenState extends State<ProfileScreen> {
+  @override
+  void initState() {
+    super.initState();
+    if (widget.isActive) _fetchAccount();
+  }
+
+  @override
+  void didUpdateWidget(covariant ProfileScreen oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (widget.isActive && !oldWidget.isActive) {
+      _fetchAccount();
+    }
+  }
+
+  Future<void> _fetchAccount() async {
+    final uid = UserState.userId.value;
+    if (uid == null || uid.isEmpty) return;
+    try {
+      await AuthService.loginComplete;
+      final res = await UserApi.getAccount(
+        sentinel: ApiConfig.appId,
+        asset: uid,
+      );
+      if (!mounted) return;
+      if (res.isSuccess && res.data != null) {
+        final data = res.data as Map<String, dynamic>?;
+        final credits = data?['reveal'] as int?;
+        if (credits != null) UserState.setCredits(credits);
+        final avatarUrl = data?['realm'] as String?;
+        UserState.setAvatar(
+            avatarUrl != null && avatarUrl.isNotEmpty ? avatarUrl : null);
+        final name = data?['terminal'] as String?;
+        UserState.setUserName(
+            name != null && name.isNotEmpty ? name : null);
+      }
+    } catch (_) {}
+  }
 
   @override
   Widget build(BuildContext context) {
@@ -23,9 +72,25 @@ class ProfileScreen extends StatelessWidget {
         ),
         child: Column(
           children: [
-            _ProfileHeader(
-              userName: 'Alex Johnson',
-              uid: 'UID 84920133',
+            ValueListenableBuilder<String?>(
+              valueListenable: UserState.avatar,
+              builder: (_, avatarUrl, __) {
+                return ValueListenableBuilder<String?>(
+                  valueListenable: UserState.userName,
+                  builder: (_, userName, __) {
+                    return ValueListenableBuilder<String?>(
+                      valueListenable: UserState.userId,
+                      builder: (_, userId, __) {
+                        return _ProfileHeader(
+                          avatarUrl: avatarUrl,
+                          userName: userName,
+                          uid: userId,
+                        );
+                      },
+                    );
+                  },
+                );
+              },
             ),
             const SizedBox(height: AppSpacing.xl),
             _BalanceCard(
@@ -56,12 +121,14 @@ class ProfileScreen extends StatelessWidget {
 
 class _ProfileHeader extends StatelessWidget {
   const _ProfileHeader({
-    required this.userName,
-    required this.uid,
+    this.avatarUrl,
+    this.userName,
+    this.uid,
   });
 
-  final String userName;
-  final String uid;
+  final String? avatarUrl;
+  final String? userName;
+  final String? uid;
 
   @override
   Widget build(BuildContext context) {
@@ -82,7 +149,23 @@ class _ProfileHeader extends StatelessWidget {
                 width: 2,
               ),
             ),
-            child: const Icon(
+            clipBehavior: Clip.antiAlias,
+            child: avatarUrl != null && avatarUrl!.isNotEmpty
+                ? CachedNetworkImage(
+                    imageUrl: avatarUrl!,
+                    fit: BoxFit.cover,
+                    placeholder: (_, __) => Icon(
+                      LucideIcons.user,
+                      size: 40,
+                      color: AppColors.textSecondary,
+                    ),
+                    errorWidget: (_, __, ___) => Icon(
+                      LucideIcons.user,
+                      size: 40,
+                      color: AppColors.textSecondary,
+                    ),
+                  )
+                : Icon(
                     LucideIcons.user,
                     size: 40,
                     color: AppColors.textSecondary,
@@ -90,7 +173,7 @@ class _ProfileHeader extends StatelessWidget {
           ),
           const SizedBox(height: AppSpacing.lg),
           Text(
-            userName,
+            userName ?? 'Guest',
             style: AppTypography.bodyLarge.copyWith(
               color: AppColors.textPrimary,
             ),
@@ -107,7 +190,7 @@ class _ProfileHeader extends StatelessWidget {
               border: Border.all(color: AppColors.border),
             ),
             child: Text(
-              uid,
+              uid != null && uid!.isNotEmpty ? 'UID $uid' : 'UID --',
               style: AppTypography.caption.copyWith(
                 color: AppColors.textSecondary,
               ),