aca-sandboxes

No explicit malicious behavior is demonstrated in this fragment (it is installation/authentication guidance). However, the provided installation/uninstall commands directly execute remote installer scripts (`curl ... | sh`, `irm ... | iex` / `scriptblock::Create`) from `aka.ms` without any integrity verification shown, creating a significant supply-chain execution risk if the remote content or redirect target is compromised. Authentication gating is primarily a UX improvement and not a security concern by itself.