powershell运行代码：

$pkg = Get-AppxPackage OpenAI.Codex
 
if ($null -eq $pkg) {
    Write-Host "未找到 OpenAI.Codex"
    exit 1
}
 
$codexPath = Join-Path $pkg.InstallLocation "app\resources\codex.exe"
 
if (Test-Path $codexPath) {
    [Environment]::SetEnvironmentVariable(
        "CODEX_CLI_PATH",
        $codexPath,
        "User"
    )
 
    Write-Host "CODEX_CLI_PATH 已更新："
    Write-Host $codexPath
} else {
    Write-Host "未找到 codex.exe："
    Write-Host $codexPath
}