fix: 修复验证码竞态条件和火柴人对齐问题

1. 修复验证码发送的竞态条件：
   - 调整执行顺序，先存储验证码到 Redis，再发送短信/邮件
   - 避免用户收到验证码后立即输入但 Redis 中尚未存储的情况
   - 影响：sendSmsCode、sendWithdrawSmsCode、sendResetPasswordSmsCode、sendEmailCode

2. 修复火柴人组件昵称与数量标签对齐问题：
   - 使用底部对齐 + Padding 让昵称标签与数量标签在同一水平线

🤖 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

@@ -648,8 +648,10 @@ export class UserApplicationService {
     const code = this.generateSmsCode();
     const cacheKey = `sms:${command.type.toLowerCase()}:${phoneNumber.value}`;
 
-    await this.smsService.sendVerificationCode(phoneNumber.value, code);
+    // 先存储到 Redis，再发送短信
+    // 避免短信发送过程中用户已收到验证码但 Redis 中还没有存储的竞态条件
     await this.redisService.set(cacheKey, code, 300);
+    await this.smsService.sendVerificationCode(phoneNumber.value, code);
   }
 
   async register(command: RegisterCommand): Promise<RegisterResult> {
@@ -2058,8 +2060,9 @@ export class UserApplicationService {
     const code = this.generateSmsCode();
     const cacheKey = `sms:withdraw:${user.phoneNumber.value}`;
 
-    await this.smsService.sendVerificationCode(user.phoneNumber.value, code);
+    // 先存储到 Redis，再发送短信（避免竞态条件）
     await this.redisService.set(cacheKey, code, 300); // 5分钟有效
+    await this.smsService.sendVerificationCode(user.phoneNumber.value, code);
 
     this.logger.log(
       `Withdraw SMS code sent successfully to: ${this.maskPhoneNumber(user.phoneNumber.value)}`,
@@ -2267,8 +2270,9 @@ export class UserApplicationService {
     const code = this.generateSmsCode();
     const cacheKey = `sms:reset_password:${phone.value}`;
 
-    await this.smsService.sendVerificationCode(phone.value, code);
+    // 先存储到 Redis，再发送短信（避免竞态条件）
     await this.redisService.set(cacheKey, code, 300); // 5分钟有效
+    await this.smsService.sendVerificationCode(phone.value, code);
 
     this.logger.log(
       `[RESET_PASSWORD] SMS code sent successfully to: ${this.maskPhoneNumber(phoneNumber)}`,
@@ -2414,6 +2418,9 @@ export class UserApplicationService {
     const code = this.generateEmailCode();
     const cacheKey = `email:${command.purpose.toLowerCase()}:${command.email.toLowerCase()}`;
 
+    // 先缓存验证码，再发送邮件（避免竞态条件）
+    await this.redisService.set(cacheKey, code, 300); // 5分钟有效
+
     // 发送验证码邮件
     const result = await this.emailService.sendVerificationCode(
       command.email,
@@ -2421,12 +2428,11 @@ export class UserApplicationService {
     );
 
     if (!result.success) {
+      // 发送失败时删除缓存的验证码
+      await this.redisService.delete(cacheKey);
       throw new ApplicationError(`发送验证码失败: ${result.message}`);
     }
 
-    // 缓存验证码，5分钟有效
-    await this.redisService.set(cacheKey, code, 300);
-
     this.logger.log(
       `Email code sent successfully to: ${this.maskEmail(command.email)}`,
     );

frontend/mobile-app/lib/features/authorization/presentation/widgets/stickman_race_widget.dart

@@ -256,35 +256,38 @@ class _StickmanRaceWidgetState extends State<StickmanRaceWidget>
           top: verticalPosition - bounce,
           child: Row(
             mainAxisSize: MainAxisSize.min,
-            crossAxisAlignment: CrossAxisAlignment.center,
+            crossAxisAlignment: CrossAxisAlignment.end, // 底部对齐
             children: [
-              // 昵称标签 - 固定在左边
-              SizedBox(
-                width: nicknameAreaWidth,
-                child: Container(
-                  padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 2),
-                  decoration: BoxDecoration(
-                    color: data.isCurrentUser
-                        ? const Color(0xFFD4AF37).withValues(alpha: 0.2)
-                        : Colors.white.withValues(alpha: 0.8),
-                    borderRadius: BorderRadius.circular(4),
-                    border: data.isCurrentUser
-                        ? Border.all(color: const Color(0xFFD4AF37), width: 1)
-                        : null,
-                  ),
-                  child: Text(
-                    data.nickname,
-                    style: TextStyle(
-                      fontSize: 9,
-                      fontFamily: 'Inter',
-                      fontWeight:
-                          data.isCurrentUser ? FontWeight.w600 : FontWeight.w400,
+              // 昵称标签 - 固定在左边，与数量标签底部对齐
+              Padding(
+                padding: const EdgeInsets.only(bottom: 38), // 火柴人高度36 + 间距2
+                child: SizedBox(
+                  width: nicknameAreaWidth,
+                  child: Container(
+                    padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 2),
+                    decoration: BoxDecoration(
                       color: data.isCurrentUser
-                          ? const Color(0xFFD4AF37)
-                          : const Color(0xFF5D4037),
+                          ? const Color(0xFFD4AF37).withValues(alpha: 0.2)
+                          : Colors.white.withValues(alpha: 0.8),
+                      borderRadius: BorderRadius.circular(4),
+                      border: data.isCurrentUser
+                          ? Border.all(color: const Color(0xFFD4AF37), width: 1)
+                          : null,
+                    ),
+                    child: Text(
+                      data.nickname,
+                      style: TextStyle(
+                        fontSize: 9,
+                        fontFamily: 'Inter',
+                        fontWeight:
+                            data.isCurrentUser ? FontWeight.w600 : FontWeight.w400,
+                        color: data.isCurrentUser
+                            ? const Color(0xFFD4AF37)
+                            : const Color(0xFF5D4037),
+                      ),
+                      overflow: TextOverflow.ellipsis,
+                      textAlign: TextAlign.center,
                     ),
-                    overflow: TextOverflow.ellipsis,
-                    textAlign: TextAlign.center,
                   ),
                 ),
               ),