refactor: rename ScadaLink → ZB.MOM.WW.ScadaBridge (code + projects + namespaces)

Solution + 23 src projects + 26 test projects renamed; folders, csproj,
namespaces, and ScadaLinkDbContext/ScadaBridgeDbContext class updated.
ActorSystem "scadalink" → "scadabridge", Akka seed-node URLs migrated.
SQL roles/logins, LDAP domains, CLI command name, and CLI config dir
(~/.scadalink → ~/.scadabridge) also renamed.

Build green; 5 Host.Tests fail awaiting SQL login rename in next commit.
Pre-existing StaleTagMonitor timing flakes unchanged.

Rename script committed at tools/rename-to-scadabridge.sh.

src/ZB.MOM.WW.ScadaBridge.NotificationService/ServiceCollectionExtensions.cs

@@ -0,0 +1,38 @@
+using Microsoft.Extensions.DependencyInjection;
+
+namespace ZB.MOM.WW.ScadaBridge.NotificationService;
+
+public static class ServiceCollectionExtensions
+{
+    /// <summary>
+    /// Registers the shared SMTP delivery primitives consumed by the central Notification
+    /// Outbox's <c>EmailNotificationDeliveryAdapter</c>: <see cref="NotificationOptions"/>,
+    /// <see cref="OAuth2TokenService"/>, and the <see cref="ISmtpClientWrapper"/> factory.
+    /// Central-only — sites no longer deliver notifications (see
+    /// <c>Component-NotificationService.md</c>), and the orphaned site-shaped
+    /// <c>NotificationDeliveryService</c> + <c>INotificationDeliveryService</c> contract
+    /// was removed (NS-019). Notification dispatch lives in <c>ZB.MOM.WW.ScadaBridge.NotificationOutbox</c>.
+    /// </summary>
+    /// <param name="services">The service collection to register into.</param>
+    public static IServiceCollection AddNotificationService(this IServiceCollection services)
+    {
+        services.AddOptions<NotificationOptions>()
+            .BindConfiguration("ScadaBridge:Notification");
+
+        services.AddHttpClient();
+        services.AddSingleton<OAuth2TokenService>();
+        services.AddSingleton<Func<ISmtpClientWrapper>>(_ => () => new MailKitSmtpClientWrapper());
+
+        return services;
+    }
+
+    /// <summary>
+    /// Registers Akka.NET actors for the notification service (placeholder for actor registration).
+    /// </summary>
+    /// <param name="services">The service collection to register into.</param>
+    public static IServiceCollection AddNotificationServiceActors(this IServiceCollection services)
+    {
+        // Actor registration happens in AkkaHostedService.
+        return services;
+    }
+}