修正文档中与 git 副本不符的表述(目录体积、git 仓库状态)

Xuxucheck/CLAUDE.md

@@ -28,7 +28,7 @@ xcodebuild -workspace XuXuCheck.xcworkspace -scheme XuXuCheck \
 
 ### The OpenCV framework is vendored in the repo
 
-`Frameworks/opencv2.xcframework` (309 MB) is checked into the working directory, so a plain checkout builds without anything external. It is wired up by exactly one `PBXFileReference` in `XuXuCheck.xcodeproj/project.pbxproj`:
+`Frameworks/opencv2.xcframework` (309 MB upstream; **203 MB in this git copy**, which keeps only the two iOS slices — see below) is checked into the working directory, so a plain checkout builds without anything external. It is wired up by exactly one `PBXFileReference` in `XuXuCheck.xcodeproj/project.pbxproj`:
 
 ```
 path = Frameworks/opencv2.xcframework; sourceTree = "<group>";

Xuxucheck/README.md

@@ -163,7 +163,7 @@ XuXuCheck/
 ├── XuXuCheck.xcworkspace     ← 打开这个
 ├── XuXuCheck.xcodeproj
 ├── Frameworks/
-│   └── opencv2.xcframework   ← 309 MB,自带的 OpenCV
+│   └── opencv2.xcframework   ← 203 MB(仅 iOS 两个切片),自带的 OpenCV
 ├── Pods/                     ← 已随项目提供,无需 pod install
 ├── Podfile / Podfile.lock    ← CocoaPods 1.16.2
 ├── XuXuCheck/                ← App 源码(SwiftUI + opencv/ 下的 C++ 管线)
@@ -180,6 +180,7 @@ XuXuCheck/
   `XuXuCheck.debug.dylib`(约 10 MB),主可执行文件只有约 90 KB、只是个壳。
   判断"OpenCV 有没有链进去"要看前者,别看错文件
 - **模拟器没有相机**,扫描流程必须真机
-- 本目录不是 git 仓库,没有历史可回溯,改动前请自行备份
+- **这一份在 git 仓库里**(`admin/ios` 的 `Xuxucheck/` 子目录),有历史可回溯,但仓库
+  体积大(203 MB 大部分是 OpenCV),克隆较慢;桌面上的原始工程不在仓库里,改动前自行备份
 - 更多架构说明见 `CLAUDE.md`;WebView 顶部/底部边距的处理与实测数据见
   `docs/webview-safe-area.md`