feat: 主页添加钱包生成状态轮询

手机号注册后跳转到主页，在主页后台轮询钱包生成状态：

功能实现：
- 添加钱包生成状态枚举（unknown/creating/ready/failed）
- 每5秒调用 GET /user/wallet 检查钱包状态
- 钱包就绪或失败后停止轮询

UI 显示：
- 钱包创建中：显示"创建账号审核中..."加载动画
- 钱包创建失败：显示错误信息和"重试"按钮
- 钱包已就绪：显示正常序列号

重试机制：
- 用户可点击"重试"按钮手动触发钱包生成
- 调用 POST /user/wallet/retry API
- 重新开始轮询直到成功

流程：
手机号注册 → 设置密码 → 跳转主页 → 后台轮询钱包状态 → 完成

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

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

frontend/mobile-app/lib/features/mining/presentation/pages/mining_page.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
@@ -10,6 +11,14 @@ enum MonitorStatus {
   active,    // 监控中
 }
 
+/// 钱包生成状态枚举
+enum WalletCreationStatus {
+  unknown,     // 未知
+  creating,    // 创建中（显示"创建账号审核中..."）
+  ready,       // 已就绪
+  failed,      // 失败
+}
+
 /// 监控页面 - 显示监控状态和控制
 /// 展示用户序列号、社区信息，未来将接入实时监控视频流
 class MiningPage extends ConsumerStatefulWidget {
@@ -34,6 +43,11 @@ class _MiningPageState extends ConsumerState<MiningPage> {
   String _province = '--';
   String _city = '--';
 
+  // 钱包生成状态
+  WalletCreationStatus _walletStatus = WalletCreationStatus.unknown;
+  String? _walletError;
+  Timer? _walletPollingTimer;
+
   @override
   void initState() {
     super.initState();
@@ -41,6 +55,14 @@ class _MiningPageState extends ConsumerState<MiningPage> {
     _checkLocalAvatarSync();
     _loadUserData();
     _loadAuthorizationData();
+    // 开始轮询钱包状态
+    _startWalletPolling();
+  }
+
+  @override
+  void dispose() {
+    _walletPollingTimer?.cancel();
+    super.dispose();
   }
 
   /// 同步检查本地头像文件（在 build 之前快速获取）
@@ -124,6 +146,79 @@ class _MiningPageState extends ConsumerState<MiningPage> {
     }
   }
 
+  /// 开始轮询钱包生成状态
+  void _startWalletPolling() {
+    debugPrint('[MiningPage] 开始轮询钱包生成状态...');
+
+    // 立即检查一次
+    _checkWalletStatus();
+
+    // 每5秒检查一次
+    _walletPollingTimer = Timer.periodic(const Duration(seconds: 5), (_) {
+      _checkWalletStatus();
+    });
+  }
+
+  /// 检查钱包生成状态
+  Future<void> _checkWalletStatus() async {
+    try {
+      final accountService = ref.read(accountServiceProvider);
+      final walletInfo = await accountService.getWalletInfo(_serialNumber);
+
+      if (!mounted) return;
+
+      setState(() {
+        if (walletInfo.isReady) {
+          _walletStatus = WalletCreationStatus.ready;
+          _walletError = null;
+          // 钱包已就绪，停止轮询
+          _walletPollingTimer?.cancel();
+          debugPrint('[MiningPage] 钱包已就绪，停止轮询');
+        } else if (walletInfo.isFailed) {
+          _walletStatus = WalletCreationStatus.failed;
+          _walletError = '账号创建失败';
+          _walletPollingTimer?.cancel();
+          debugPrint('[MiningPage] 钱包创建失败');
+        } else {
+          _walletStatus = WalletCreationStatus.creating;
+          _walletError = null;
+          debugPrint('[MiningPage] 钱包创建中...');
+        }
+      });
+    } catch (e) {
+      debugPrint('[MiningPage] 检查钱包状态失败: $e');
+      // 不改变状态，继续轮询
+    }
+  }
+
+  /// 手动重试钱包生成
+  Future<void> _retryWalletGeneration() async {
+    try {
+      debugPrint('[MiningPage] 手动重试钱包生成...');
+      final accountService = ref.read(accountServiceProvider);
+      await accountService.retryWalletGeneration();
+
+      if (!mounted) return;
+
+      // 重置状态并重新开始轮询
+      setState(() {
+        _walletStatus = WalletCreationStatus.creating;
+        _walletError = null;
+      });
+
+      // 重新开始轮询
+      _walletPollingTimer?.cancel();
+      _startWalletPolling();
+    } catch (e) {
+      debugPrint('[MiningPage] 重试钱包生成失败: $e');
+      if (mounted) {
+        setState(() {
+          _walletError = '重试失败: $e';
+        });
+      }
+    }
+  }
+
   /// 显示帮助信息
   void _showHelpInfo() {
     showDialog(
@@ -314,17 +409,79 @@ class _MiningPageState extends ConsumerState<MiningPage> {
             child: Column(
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
-                Text(
+                // 根据钱包状态显示不同内容
-                  '序列号$_serialNumber',
+                if (_walletStatus == WalletCreationStatus.creating)
-                  style: const TextStyle(
+                  Row(
-                    fontSize: 20,
+                    children: [
-                    fontFamily: 'Inter',
+                      const SizedBox(
-                    fontWeight: FontWeight.w700,
+                        width: 16,
-                    height: 1.25,
+                        height: 16,
-                    letterSpacing: -0.3,
+                        child: CircularProgressIndicator(
-                    color: Color(0xFF5D4037),
+                          strokeWidth: 2,
+                          valueColor: AlwaysStoppedAnimation<Color>(Color(0xFF8B5A2B)),
+                        ),
+                      ),
+                      const SizedBox(width: 8),
+                      Text(
+                        '创建账号审核中...',
+                        style: const TextStyle(
+                          fontSize: 16,
+                          fontFamily: 'Inter',
+                          fontWeight: FontWeight.w600,
+                          color: Color(0xFF8B5A2B),
+                        ),
+                      ),
+                    ],
+                  )
+                else if (_walletStatus == WalletCreationStatus.failed)
+                  Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        _walletError ?? '账号创建失败',
+                        style: const TextStyle(
+                          fontSize: 16,
+                          fontFamily: 'Inter',
+                          fontWeight: FontWeight.w600,
+                          color: Colors.red,
+                        ),
+                      ),
+                      const SizedBox(height: 4),
+                      GestureDetector(
+                        onTap: _retryWalletGeneration,
+                        child: Container(
+                          padding: const EdgeInsets.symmetric(
+                            horizontal: 12,
+                            vertical: 6,
+                          ),
+                          decoration: BoxDecoration(
+                            color: const Color(0xFF8B5A2B),
+                            borderRadius: BorderRadius.circular(4),
+                          ),
+                          child: const Text(
+                            '重试',
+                            style: TextStyle(
+                              fontSize: 14,
+                              fontWeight: FontWeight.w600,
+                              color: Colors.white,
+                            ),
+                          ),
+                        ),
+                      ),
+                    ],
+                  )
+                else
+                  Text(
+                    '序列号$_serialNumber',
+                    style: const TextStyle(
+                      fontSize: 20,
+                      fontFamily: 'Inter',
+                      fontWeight: FontWeight.w700,
+                      height: 1.25,
+                      letterSpacing: -0.3,
+                      color: Color(0xFF5D4037),
+                    ),
                   ),
-                ),
                 const SizedBox(height: 4),
                 Text(
                   '社区: $_community${locationText.isNotEmpty ? ' / $locationText' : ''}',