//! Windows kill-switch stub (plan 008 U4).
//!
//! Real impl would drive `netsh advfirewall` or the Windows Filtering
//! Platform via `windows-sys`. Today this returns `Ok(())` from
//! `enable_blocking_multi` (no-op stub) so the rest of the engine can
//! exercise its rule-synthesis path under tests and on developer
//! workstations.
use crate;
;