Document aka.ms URL usage and exit code 3010 meaning

Co-authored-by: wysaid <1430725+wysaid@users.noreply.github.com>

Author: Copilot

.github/workflows/windows-build.yml

@@ -243,7 +243,8 @@ jobs:
           Write-Host "Installing Visual Studio 2025 Build Tools Preview..."
           
           # Download VS installer
-          # Note: This URL points to the preview version. When VS 2025 is officially released,
+          # Note: Using aka.ms redirect URL per Microsoft's standard distribution method.
+          # This URL points to the preview version. When VS 2025 is officially released,
           # verify and update the URL from Microsoft's official documentation.
           # If the URL becomes unavailable, the error handling below will catch it and skip the build.
           $installerUrl = "https://aka.ms/vs/18/pre/vs_BuildTools.exe"
@@ -268,6 +269,7 @@ jobs:
             
             $process = Start-Process -FilePath $installerPath -ArgumentList $arguments -Wait -PassThru -NoNewWindow
             
+            # Exit codes: 0 = success, 3010 = success with reboot required (common for VS installers)
             if ($process.ExitCode -eq 0 -or $process.ExitCode -eq 3010) {
               Write-Host "Visual Studio 2025 Build Tools installed successfully"
               echo "VS_2025_AVAILABLE=true" >> $env:GITHUB_ENV