Runs the whole README runbook in one go: relocates the repo off the USB
stick, installs CLT + Homebrew, brew bundle, symlinks, copied configs,
fish as default shell, and the .NET SDK, then prints the remaining
manual steps.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MN5eka2MuNJP9uCMdTda75
