Automated build from branch main (commit 26036ba).
更新内容 / What's new
- 新增增量升级：启动时检查新版本并显示更新日志，只下载有变化的文件（内置 PE 也只更新变化的文件），升级失败会自动恢复原版本。
Added incremental updates: LetRecovery checks for new versions at startup, shows the changelog, downloads only changed files (the built-in PE is updated file by file) and automatically restores the previous version if the update fails. - 升级时如果发现 bin\pe 中的 PE 镜像被修改过，会先列出这些镜像并询问：继续更新（下载新版本的官方 PE 镜像替换它们）、禁用更新功能（保留修改过的镜像和当前版本，系统安装等功能照常使用）或以后再说，不再只升级程序而保留可能不兼容的旧镜像；禁用后可在“关于”页重新勾选“自动检查更新”。
If the PE image in bin\pe has been modified, the update now lists the modified images and asks first: continue (download the official PE image of the new version to replace them), disable updates (keep the modified image and the current version; installation and other features keep working) or decide later. The program is no longer updated while a possibly incompatible old image is kept. Updates can be turned back on with “Check for updates automatically” on the About page.