fix(central-ui): resolve CentralUI-002/003/004 — site-scope enforcement, per-circuit console capture, cached auth state

src/ScadaLink.CentralUI/ServiceCollectionExtensions.cs

@@ -18,6 +18,10 @@ public static class ServiceCollectionExtensions
         services.AddScoped<AuthenticationStateProvider, CookieAuthenticationStateProvider>();
         services.AddCascadingAuthenticationState();
 
+        // Resolves the current user's permitted site set from their SiteId claims
+        // so Deployment/Monitoring pages can enforce site scoping (CentralUI-002).
+        services.AddScoped<SiteScopeService>();
+
         // Centralised dialog service: pages inject IDialogService and a single
         // <DialogHost /> in MainLayout renders the active dialog. See
         // Components/Shared/IDialogService.cs.