OpenClaw npm dependencies require git. Add check/install via
winget or choco, with fallback to git-scm.com manual download.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace exit 1 with Read-Host + return so users can read
the error message before the window closes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>