GCP only offers Windows Server images, which lack winget. Rewrite
bootstrap-windows.ps1 to be winget-free (Chocolatey for git + VS Build Tools,
direct-from-Google for the Flutter SDK) and add a -SkipVS fast path — the
ConPTY soak only needs Flutter/Dart. Runs under Windows PowerShell 5.1. README
gains a self-contained GCP Cloud Shell runbook (create / reset-password / RDP /
stop / delete).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
1c7fc7d786