feat：添加验证码调试功能

- 在验证码服务中添加debugCodeInfo方法
- 在业务层添加debugVerificationCode调试接口
- 新增/auth/debug-verification-code调试端点
- 支持查看验证码详细状态信息（TTL、尝试次数等）
- 便于开发和生产环境问题排查

src/business/login/login.controller.ts

@@ -343,4 +343,23 @@ export class LoginController {
   async resendEmailVerification(@Body() sendEmailVerificationDto: SendEmailVerificationDto): Promise<ApiResponse<{ verification_code?: string }>> {
     return await this.loginService.resendEmailVerification(sendEmailVerificationDto.email);
   }
+
+  /**
+   * 调试验证码信息
+   * 仅用于开发和调试
+   * 
+   * @param sendEmailVerificationDto 邮箱信息
+   * @returns 验证码调试信息
+   */
+  @ApiOperation({ 
+    summary: '调试验证码信息', 
+    description: '获取验证码的详细调试信息（仅开发环境）' 
+  })
+  @ApiBody({ type: SendEmailVerificationDto })
+  @Post('debug-verification-code')
+  @HttpCode(HttpStatus.OK)
+  @UsePipes(new ValidationPipe({ transform: true }))
+  async debugVerificationCode(@Body() sendEmailVerificationDto: SendEmailVerificationDto): Promise<any> {
+    return await this.loginService.debugVerificationCode(sendEmailVerificationDto.email);
+  }
 }

src/business/login/login.service.ts

@@ -427,4 +427,31 @@ export class LoginService {
     // 简单的Base64编码（实际应用中应使用JWT）
     return Buffer.from(JSON.stringify(payload)).toString('base64');
   }
+  /**
+   * 调试验证码信息
+   * 
+   * @param email 邮箱地址
+   * @returns 调试信息
+   */
+  async debugVerificationCode(email: string): Promise<any> {
+    try {
+      this.logger.log(`调试验证码信息: ${email}`);
+
+      const debugInfo = await this.loginCoreService.debugVerificationCode(email);
+
+      return {
+        success: true,
+        data: debugInfo,
+        message: '调试信息获取成功'
+      };
+    } catch (error) {
+      this.logger.error(`获取验证码调试信息失败: ${email}`, error instanceof Error ? error.stack : String(error));
+      
+      return {
+        success: false,
+        message: error instanceof Error ? error.message : '获取调试信息失败',
+        error_code: 'DEBUG_VERIFICATION_CODE_FAILED'
+      };
+    }
+  }
 }

src/core/login_core/login_core.service.ts

@@ -567,4 +567,16 @@ export class LoginCoreService {
     const phoneRegex = /^(\+\d{1,3}[- ]?)?\d{10,11}$/;
     return phoneRegex.test(str.replace(/\s/g, ''));
   }
-}
+  /**
+   * 调试验证码信息
+   * 
+   * @param email 邮箱地址
+   * @returns 调试信息
+   */
+  async debugVerificationCode(email: string): Promise<any> {
+    return await this.verificationService.debugCodeInfo(
+      email,
+      VerificationCodeType.EMAIL_VERIFICATION
+    );
+  }
+}