debug: add detailed logging for avatar loading

Added debug logs in:
- ProfilePage._loadUserData() - local storage data
- ProfilePage._loadMeData() - API response and sync conditions
- ProfilePage._buildAvatarContent() - avatar rendering decision
- UserApplicationService.getMe() - backend avatarUrl value

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/identity-service/src/application/services/user-application.service.ts

@@ -492,9 +492,16 @@ export class UserApplicationService {
    * 获取当前登录用户信息 (GET /api/me)
    */
   async getMe(userId: string): Promise<MeResult> {
+    this.logger.debug(`getMe() - userId: ${userId}`);
     const account = await this.userRepository.findById(UserId.create(userId));
     if (!account) throw new ApplicationError('用户不存在');
 
+    this.logger.debug(`getMe() - account found: seq=${account.accountSequence.value}, nickname=${account.nickname}`);
+    this.logger.debug(`getMe() - avatarUrl: ${account.avatarUrl ? `长度=${account.avatarUrl.length}` : 'null'}`);
+    if (account.avatarUrl) {
+      this.logger.debug(`getMe() - avatarUrl前100字符: ${account.avatarUrl.substring(0, 100)}`);
+    }
+
     const baseUrl = 'https://app.rwadurian.com'; // TODO: 从配置读取
     const referralLink = `${baseUrl}/invite/${account.referralCode.value}`;
 

frontend/mobile-app/lib/features/profile/presentation/pages/profile_page.dart

@@ -143,6 +143,7 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
 
   /// 加载用户数据
   Future<void> _loadUserData() async {
+    debugPrint('[ProfilePage] _loadUserData() - 开始加载本地存储数据...');
     final accountService = ref.read(accountServiceProvider);
 
     // 并行加载本地存储数据
@@ -162,6 +163,13 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
     final localAvatarPath = results[4] as String?;
     final referralCode = results[5] as String?;
 
+    debugPrint('[ProfilePage] _loadUserData() - 本地存储数据:');
+    debugPrint('[ProfilePage]   username: $username');
+    debugPrint('[ProfilePage]   serialNum: $serialNum');
+    debugPrint('[ProfilePage]   avatarSvg: ${avatarSvg != null ? "长度=${avatarSvg.length}" : "null"}');
+    debugPrint('[ProfilePage]   avatarUrl: $avatarUrl');
+    debugPrint('[ProfilePage]   localAvatarPath: $localAvatarPath');
+
     if (mounted) {
       setState(() {
         _nickname = username ?? '未设置昵称';
@@ -185,9 +193,16 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
   /// 从API加载完整用户信息
   Future<void> _loadMeData() async {
     try {
+      debugPrint('[ProfilePage] _loadMeData() - 开始加载用户信息...');
       final accountService = ref.read(accountServiceProvider);
       final meData = await accountService.getMe();
 
+      debugPrint('[ProfilePage] _loadMeData() - API返回数据:');
+      debugPrint('[ProfilePage]   nickname: ${meData.nickname}');
+      debugPrint('[ProfilePage]   avatarUrl: ${meData.avatarUrl != null ? "长度=${meData.avatarUrl!.length}" : "null"}');
+      debugPrint('[ProfilePage]   avatarUrl内容前100字符: ${meData.avatarUrl?.substring(0, meData.avatarUrl!.length > 100 ? 100 : meData.avatarUrl!.length) ?? "null"}');
+      debugPrint('[ProfilePage]   当前_avatarSvg: ${_avatarSvg != null ? "长度=${_avatarSvg!.length}" : "null"}');
+
       if (mounted) {
         setState(() {
           _referrerSerial = meData.inviterSequence?.toString() ?? '无';
@@ -199,15 +214,24 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
             _referralCode = meData.referralCode;
           }
           // 如果本地没有头像但API返回了头像，更新显示
+          debugPrint('[ProfilePage] _loadMeData() - 检查头像同步条件:');
+          debugPrint('[ProfilePage]   _avatarSvg == null: ${_avatarSvg == null}');
+          debugPrint('[ProfilePage]   meData.avatarUrl != null: ${meData.avatarUrl != null}');
+          debugPrint('[ProfilePage]   meData.avatarUrl.isNotEmpty: ${meData.avatarUrl?.isNotEmpty ?? false}');
+
           if (_avatarSvg == null && meData.avatarUrl != null && meData.avatarUrl!.isNotEmpty) {
+            debugPrint('[ProfilePage] _loadMeData() - 同步头像到本地!');
             _avatarSvg = meData.avatarUrl;
             // 同时保存到本地存储，避免下次还需要从API获取
             accountService.updateLocalAvatarSvg(meData.avatarUrl!);
+          } else {
+            debugPrint('[ProfilePage] _loadMeData() - 不需要同步头像 (条件不满足)');
           }
         });
       }
-    } catch (e) {
+    } catch (e, stackTrace) {
       debugPrint('[ProfilePage] 加载用户信息失败: $e');
+      debugPrint('[ProfilePage] 堆栈: $stackTrace');
       // 失败时保持现有数据，不影响页面显示
     }
   }
@@ -543,11 +567,17 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
 
   /// 构建头像内容（优先本地文件，其次网络URL，最后SVG）
   Widget _buildAvatarContent() {
+    debugPrint('[ProfilePage] _buildAvatarContent() - 开始构建头像');
+    debugPrint('[ProfilePage]   _localAvatarPath: $_localAvatarPath');
+    debugPrint('[ProfilePage]   _avatarUrl: $_avatarUrl');
+    debugPrint('[ProfilePage]   _avatarSvg: ${_avatarSvg != null ? "长度=${_avatarSvg!.length}" : "null"}');
+
     // 1. 优先显示本地缓存的头像文件
     if (_localAvatarPath != null && _localAvatarPath!.isNotEmpty) {
       final file = File(_localAvatarPath!);
       // 同步检查文件是否存在
       if (file.existsSync()) {
+        debugPrint('[ProfilePage] _buildAvatarContent() - 使用本地文件: $_localAvatarPath');
         return Image.file(
           file,
           width: 80,
@@ -555,10 +585,13 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
           fit: BoxFit.cover,
           gaplessPlayback: true, // 防止图片切换时闪烁
           errorBuilder: (context, error, stackTrace) {
+            debugPrint('[ProfilePage] _buildAvatarContent() - 本地文件加载失败: $error');
             // 本地文件加载失败，尝试网络URL
             return _buildNetworkOrSvgAvatar();
           },
         );
+      } else {
+        debugPrint('[ProfilePage] _buildAvatarContent() - 本地文件不存在');
       }
     }
 
@@ -568,8 +601,10 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
 
   /// 构建网络URL或SVG头像
   Widget _buildNetworkOrSvgAvatar() {
+    debugPrint('[ProfilePage] _buildNetworkOrSvgAvatar() - 尝试网络URL或SVG');
     // 尝试显示网络图片URL
     if (_avatarUrl != null && _avatarUrl!.isNotEmpty) {
+      debugPrint('[ProfilePage] _buildNetworkOrSvgAvatar() - 使用网络URL: $_avatarUrl');
       return Image.network(
         _avatarUrl!,
         width: 80,
@@ -589,6 +624,7 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
           );
         },
         errorBuilder: (context, error, stackTrace) {
+          debugPrint('[ProfilePage] _buildNetworkOrSvgAvatar() - 网络图片加载失败: $error');
           // 加载失败时显示SVG或默认头像
           return _buildSvgOrDefaultAvatar();
         },
@@ -596,12 +632,15 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
     }
 
     // 显示SVG或默认头像
+    debugPrint('[ProfilePage] _buildNetworkOrSvgAvatar() - 无网络URL，尝试SVG');
     return _buildSvgOrDefaultAvatar();
   }
 
   /// 构建SVG或默认头像
   Widget _buildSvgOrDefaultAvatar() {
     if (_avatarSvg != null) {
+      debugPrint('[ProfilePage] _buildSvgOrDefaultAvatar() - 使用SVG头像，长度=${_avatarSvg!.length}');
+      debugPrint('[ProfilePage]   SVG前50字符: ${_avatarSvg!.substring(0, _avatarSvg!.length > 50 ? 50 : _avatarSvg!.length)}');
       return SvgPicture.string(
         _avatarSvg!,
         width: 80,
@@ -609,6 +648,7 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
         fit: BoxFit.cover,
       );
     }
+    debugPrint('[ProfilePage] _buildSvgOrDefaultAvatar() - 无SVG，使用默认图标');
     return const Icon(
       Icons.person,
       size: 40,