fix(withdraw): 将确认页面中的提款改为提取

- 页面标题"确认提款" → "确认提取"
- "提款详情" → "提取详情"
- "提款网络" → "提取网络"
- "提款地址" → "接收地址"
- "提款金额" → "提取数量"
- "提款申请已提交" → "提取申请已提交"
- 按钮文字"确认提款" → "确认提取"
- 错误提示"提款失败" → "提取失败"

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

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

frontend/mobile-app/lib/features/withdraw/presentation/pages/withdraw_confirm_page.dart

@@ -4,8 +4,8 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import 'withdraw_usdt_page.dart';
 
-/// 提款确认页面
-/// 显示提款详情并进行谷歌验证器验证
+/// 提取确认页面
+/// 显示提取详情并进行谷歌验证器验证
 class WithdrawConfirmPage extends ConsumerStatefulWidget {
   final WithdrawUsdtParams params;
 
@@ -84,7 +84,7 @@ class _WithdrawConfirmPageState extends ConsumerState<WithdrawConfirmPage> {
     return '${address.substring(0, 8)}...${address.substring(address.length - 8)}';
   }
 
-  /// 提交提款
+  /// 提交提取
   Future<void> _onSubmit() async {
     final code = _getCode();
 
@@ -99,13 +99,13 @@ class _WithdrawConfirmPageState extends ConsumerState<WithdrawConfirmPage> {
     });
 
     try {
-      debugPrint('[WithdrawConfirmPage] 开始提款...');
+      debugPrint('[WithdrawConfirmPage] 开始提取...');
       debugPrint('[WithdrawConfirmPage]   金额: ${widget.params.amount} USDT');
       debugPrint('[WithdrawConfirmPage]   地址: ${widget.params.address}');
       debugPrint('[WithdrawConfirmPage]   网络: ${_getNetworkName(widget.params.network)}');
       debugPrint('[WithdrawConfirmPage]   验证码: $code');
 
-      // TODO: 调用 API 提交提款请求
+      // TODO: 调用 API 提交提取请求
       // final walletService = ref.read(walletServiceProvider);
       // await walletService.withdrawUsdt(
       //   amount: widget.params.amount,
@@ -126,12 +126,12 @@ class _WithdrawConfirmPageState extends ConsumerState<WithdrawConfirmPage> {
         _showSuccessDialog();
       }
     } catch (e) {
-      debugPrint('[WithdrawConfirmPage] 提款失败: $e');
+      debugPrint('[WithdrawConfirmPage] 提取失败: $e');
       if (mounted) {
         setState(() {
           _isSubmitting = false;
         });
-        _showErrorSnackBar('提款失败: ${e.toString()}');
+        _showErrorSnackBar('提取失败: ${e.toString()}');
       }
     }
   }
@@ -163,7 +163,7 @@ class _WithdrawConfirmPageState extends ConsumerState<WithdrawConfirmPage> {
             ),
             const SizedBox(height: 16),
             const Text(
-              '提款申请已提交',
+              '提取申请已提交',
               style: TextStyle(
                 fontSize: 18,
                 fontFamily: 'Inter',
@@ -243,7 +243,7 @@ class _WithdrawConfirmPageState extends ConsumerState<WithdrawConfirmPage> {
                   child: Column(
                     crossAxisAlignment: CrossAxisAlignment.start,
                     children: [
-                      // 提款详情卡片
+                      // 提取详情卡片
                       _buildDetailsCard(),
                       const SizedBox(height: 24),
 
@@ -288,7 +288,7 @@ class _WithdrawConfirmPageState extends ConsumerState<WithdrawConfirmPage> {
           // 标题
           const Expanded(
             child: Text(
-              '确认提款',
+              '确认提取',
               style: TextStyle(
                 fontSize: 18,
                 fontFamily: 'Inter',
@@ -307,7 +307,7 @@ class _WithdrawConfirmPageState extends ConsumerState<WithdrawConfirmPage> {
     );
   }
 
-  /// 构建提款详情卡片
+  /// 构建提取详情卡片
   Widget _buildDetailsCard() {
     final fee = _calculateFee();
     final actual = _calculateActualAmount();
@@ -327,7 +327,7 @@ class _WithdrawConfirmPageState extends ConsumerState<WithdrawConfirmPage> {
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
           const Text(
-            '提款详情',
+            '提取详情',
             style: TextStyle(
               fontSize: 18,
               fontFamily: 'Inter',
@@ -336,11 +336,11 @@ class _WithdrawConfirmPageState extends ConsumerState<WithdrawConfirmPage> {
             ),
           ),
           const SizedBox(height: 16),
-          _buildDetailRow('提款网络', _getNetworkName(widget.params.network)),
+          _buildDetailRow('提取网络', _getNetworkName(widget.params.network)),
           const SizedBox(height: 12),
-          _buildDetailRow('提款地址', _formatAddress(widget.params.address)),
+          _buildDetailRow('接收地址', _formatAddress(widget.params.address)),
           const SizedBox(height: 12),
-          _buildDetailRow('提款金额', '${widget.params.amount.toStringAsFixed(2)} 积分'),
+          _buildDetailRow('提取数量', '${widget.params.amount.toStringAsFixed(2)} 积分'),
           const SizedBox(height: 12),
           _buildDetailRow('手续费', '${fee.toStringAsFixed(2)} 积分'),
           const Divider(color: Color(0x33D4AF37), height: 24),
@@ -536,7 +536,7 @@ class _WithdrawConfirmPageState extends ConsumerState<WithdrawConfirmPage> {
                   ),
                 )
               : const Text(
-                  '确认提款',
+                  '确认提取',
                   style: TextStyle(
                     fontSize: 16,
                     fontFamily: 'Inter',