docs(readme): add prerelease install warning image

README.md

@@ -32,6 +32,12 @@ Download the latest release from the [Releases](https://github.com/CSZHK/CleanMy
 
 Prefer the latest non-prerelease release if you want the normal public install path. GitHub prereleases may contain development-signed builds intended for testing; those builds can require `Open Anyway` or a right-click `Open` flow before launch.
 
+If you install a prerelease and macOS blocks the app, you will see a warning similar to this in `System Settings -> Privacy & Security`:
+
+<p align="center">
+  <img src="Docs/Media/README/atlas-prerelease-warning.png" alt="macOS Security warning for Atlas for Mac prerelease build with Open Anyway action" width="900" />
+</p>
+
 ### Requirements
 
 - macOS 14.0 (Sonoma) or later

README.zh-CN.md

@@ -32,6 +32,12 @@ Atlas for Mac 是一个独立的开源项目，与 Apple、Mole 上游作者或
 
 如果你想要正常的公开安装路径，优先下载最新的非 `prerelease` 版本。GitHub 上的 `prerelease` 版本可能包含用于测试的开发签名构建，这类构建在首次启动时可能需要 `仍要打开` 或右键 `打开`。
 
+如果你安装的是 `prerelease` 版本，macOS 可能会在 `系统设置 -> 隐私与安全性` 中显示类似下面的拦截提示：
+
+<p align="center">
+  <img src="Docs/Media/README/atlas-prerelease-warning.png" alt="Atlas for Mac 预发布版本在 macOS 安全性设置中的拦截提示与 Open Anyway 操作示意图" width="900" />
+</p>
+
 ### 系统要求
 
 - macOS 14.0（Sonoma）或更高版本