## What changed
- Add a Windows sandbox service validator that loads managed configuration while impersonating the provisioning client.
- Reject elevated sandbox or network settings that conflict with managed requirements, including local binding and HTTP or SOCKS proxy-port restrictions.
- Add a one-shot cloud configuration loader that bypasses the disk cache so policy checks use a fresh backend response without modifying cached configuration.
- Keep the provisioning integration disabled until authenticated transport can supply the policy inputs.
## Testing
- Cover elevated sandbox restrictions, disabled networking, local binding, proxy-port classification, malformed policy, impersonation failure, and cache bypass behavior.
GitOrigin-RevId: b76aa8959c515c6507c2eaf61af768efa1305253
c4ea7294b9