Pick the Arm64 rustup and Qt builds on Arm64 Windows

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

seediso/windows11/40-Install-Rustup.bat

@@ -7,8 +7,17 @@ rem The default msvc toolchain needs the MSVC Build Tools (see 20-Install-MSVC-A
 
 set "INSTALLER=%TEMP%\rustup-init.exe"
 
-echo Downloading rustup-init...
+rem PROCESSOR_ARCHITEW6432 holds the real architecture when this runs under emulation.
-curl.exe -L --fail -o "%INSTALLER%" https://win.rustup.rs/x86_64
+set "ARCH=%PROCESSOR_ARCHITECTURE%"
+if defined PROCESSOR_ARCHITEW6432 set "ARCH=%PROCESSOR_ARCHITEW6432%"
+if /i "%ARCH%"=="ARM64" (
+    set "RUSTUP_ARCH=aarch64"
+) else (
+    set "RUSTUP_ARCH=x86_64"
+)
+
+echo Downloading rustup-init (%RUSTUP_ARCH%)...
+curl.exe -L --fail -o "%INSTALLER%" https://win.rustup.rs/%RUSTUP_ARCH%
 if errorlevel 1 (
     echo Download failed.
     pause

seediso/windows11/60-Install-Qt6.bat

@@ -3,13 +3,25 @@ setlocal
 title Install Qt 6
 
 rem Qt is not available from winget, so this uses the standalone aqtinstall (aqt) to fetch it.
-rem The msvc2022_64 build needs the MSVC Build Tools (see 20-Install-MSVC-Admin.bat).
+rem The msvc2022 builds need the MSVC Build Tools (see 20-Install-MSVC-Admin.bat).
 
 set "QT_VERSION=6.10.3"
-set "QT_ARCH=win64_msvc2022_64"
 set "QT_ROOT=C:\Qt"
 set "AQT=%TEMP%\aqt.exe"
 
+rem PROCESSOR_ARCHITEW6432 holds the real architecture when this runs under emulation.
+set "ARCH=%PROCESSOR_ARCHITECTURE%"
+if defined PROCESSOR_ARCHITEW6432 set "ARCH=%PROCESSOR_ARCHITEW6432%"
+if /i "%ARCH%"=="ARM64" (
+    set "QT_HOST=windows_arm64"
+    set "QT_DIR=msvc2022_arm64"
+) else (
+    set "QT_HOST=windows"
+    set "QT_DIR=msvc2022_64"
+)
+set "QT_ARCH=win64_%QT_DIR%"
+
+rem aqt has no Arm64 build; the x64 one runs under emulation on Arm64 Windows.
 echo Downloading aqtinstall...
 curl.exe -L --fail -o "%AQT%" https://github.com/miurahr/aqtinstall/releases/download/v3.3.0/aqt_x64.exe
 if errorlevel 1 (
@@ -19,13 +31,13 @@ if errorlevel 1 (
 )
 
 echo Installing Qt %QT_VERSION% (%QT_ARCH%) to %QT_ROOT% ...
-"%AQT%" install-qt windows desktop %QT_VERSION% %QT_ARCH% --outputdir "%QT_ROOT%"
+"%AQT%" install-qt %QT_HOST% desktop %QT_VERSION% %QT_ARCH% --outputdir "%QT_ROOT%"
 set "RC=%ERRORLEVEL%"
 
 del "%AQT%" >nul 2>&1
 
 if "%RC%"=="0" (
-    echo Done. Use -DCMAKE_PREFIX_PATH=%QT_ROOT%\%QT_VERSION%\msvc2022_64 with CMake.
+    echo Done. Use -DCMAKE_PREFIX_PATH=%QT_ROOT%\%QT_VERSION%\%QT_DIR% with CMake.
 ) else (
     echo aqt exited with code %RC%.
 )

windows11-arm64-install-speed.md

@@ -151,8 +151,8 @@ vm-images/build-windows-install-disk.sh [--force] ISO [OUTPUT.img]
   （`virtio-win-gt-arm64.msi`，含 NetKVM、viostor 等），但我没确认它在哪个发行版里发布。
   arm64 的网卡是 virtio-net，驱动装不上就没有网络，后面联网下载的 `.bat` 会失败。
   可选方案：换含 arm64 MSI 的 ISO，或在脚本里用 `pnputil` 从 `NetKVM\w11\ARM64` 装驱动。**未验证、未修改。**
-- **x64 安装脚本**：`40-Install-Rustup.bat` 下载 `x86_64` 安装器、`60-Install-Qt6.bat` 下载 `aqt_x64.exe`，
+- **安装脚本的架构**：（已修改）`40-Install-Rustup.bat` 和 `60-Install-Qt6.bat` 按 `PROCESSOR_ARCHITECTURE` 选择
-  在 Arm Windows 上靠模拟运行，装出来的是 x64 版本。
+  `aarch64` 的 rustup-init 和 `win64_msvc2022_arm64` 的 Qt。aqt 没有 Arm64 版，`aqt_x64.exe` 仍靠模拟运行，只负责下载。
 - **按键提示**：用 USB 光驱（原方式）时，Arm 版 ISO 会显示 "Press any key to boot from CD or DVD"，几秒内不按键会掉进 UEFI Shell。
   磁盘镜像方式不经过这个提示。曾经加过自动按键逻辑，按要求已删除。
 - **显卡**：arm64 配置用 `ramfb`。`virtio-gpu-pci` 会让画面冻结在 "Start boot option"（QEMU 固件的 virtio-gpu 输出在 Windows 引导管理器处冻结）。