Update scripts to use dynamic username instead of hardcoded alexz

- setup-autologin-sshd.ps1: Uses $env:USERNAME, prompts for password
- setup-ssh-keys.ps1: Uses $env:USERNAME, prompts for public key
- install-nodejs.ps1: Uses $env:USERNAME in instructions
- vpn-login.js: Uses process.env.USERPROFILE for paths

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/rego-tunnel/build/rego/install-nodejs.ps1

@@ -1,9 +1,10 @@
 # Install Node.js on Windows
 # Run as Administrator in PowerShell
 
-$nodeVersion = "22.9.0"
+$nodeVersion = "22.12.0"
 $nodeUrl = "https://nodejs.org/dist/v$nodeVersion/node-v$nodeVersion-x64.msi"
 $installerPath = "$env:TEMP\node-installer.msi"
+$Username = $env:USERNAME
 
 Write-Host "Downloading Node.js v$nodeVersion..." -ForegroundColor Cyan
 Invoke-WebRequest -Uri $nodeUrl -OutFile $installerPath
@@ -25,6 +26,6 @@ Remove-Item $installerPath -Force
 
 Write-Host ""
 Write-Host "Next steps:" -ForegroundColor Yellow
-Write-Host "1. Copy vpn-login.js, socks5.js, vpn.bat to C:\Users\alexz\vpn_scripts\"
-Write-Host "2. Open CMD in C:\Users\alexz\vpn_scripts\ and run: npm install ws otplib"
+Write-Host "1. Copy vpn-login.js, socks5.js, vpn.bat to C:\Users\$Username\vpn_scripts\"
+Write-Host "2. Open CMD in C:\Users\$Username\vpn_scripts\ and run: npm install ws otplib"
 Write-Host "3. Add vpn.bat shortcut to shell:startup folder"