- SysConfigServiceImpl: 新增 Redis 缓存层 + @PostConstruct 启动加载全部配置
  (与 custom-back selectConfigByKey 一致的: Redis→DB→缓存回写 流程)
- SysPasswordService: 改用 @Value 可配置 maxRetryCount/lockTime
  (与 custom-back user.password.maxRetryCount/lockTime 对齐)
- SysLogininforServiceImpl: 新增 IP/浏览器/操作系统 采集
  (与 custom-back AsyncFactory.recordLogininfor 对齐:
   X-Forwarded-For→X-Real-IP→RemoteAddr, User-Agent 解析浏览器和OS)
- SysConfigService.selectCaptchaEnabled: 默认返回 true(与 custom-back 一致)

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