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.InboundAPI/IInstanceRouter.cs

@@ -0,0 +1,34 @@
+using ZB.MOM.WW.ScadaBridge.Commons.Messages.InboundApi;
+
+namespace ZB.MOM.WW.ScadaBridge.InboundAPI;
+
+/// <summary>
+/// Seam over the cross-site routing transport used by <see cref="RouteHelper"/>.
+/// The production implementation (<see cref="CommunicationServiceInstanceRouter"/>)
+/// delegates to <c>ZB.MOM.WW.ScadaBridge.Communication.CommunicationService</c>; the interface
+/// exists so <see cref="RouteHelper"/>/<see cref="RouteTarget"/> can be unit tested
+/// without a live actor system (InboundAPI-017).
+/// </summary>
+public interface IInstanceRouter
+{
+    /// <summary>Routes a script call request to the specified site.</summary>
+    /// <param name="siteId">Target site identifier.</param>
+    /// <param name="request">The call request to route.</param>
+    /// <param name="cancellationToken">Cancellation token for the routed call.</param>
+    Task<RouteToCallResponse> RouteToCallAsync(
+        string siteId, RouteToCallRequest request, CancellationToken cancellationToken);
+
+    /// <summary>Routes a batch attribute read request to the specified site.</summary>
+    /// <param name="siteId">Target site identifier.</param>
+    /// <param name="request">The get-attributes request to route.</param>
+    /// <param name="cancellationToken">Cancellation token for the routed call.</param>
+    Task<RouteToGetAttributesResponse> RouteToGetAttributesAsync(
+        string siteId, RouteToGetAttributesRequest request, CancellationToken cancellationToken);
+
+    /// <summary>Routes a batch attribute write request to the specified site.</summary>
+    /// <param name="siteId">Target site identifier.</param>
+    /// <param name="request">The set-attributes request to route.</param>
+    /// <param name="cancellationToken">Cancellation token for the routed call.</param>
+    Task<RouteToSetAttributesResponse> RouteToSetAttributesAsync(
+        string siteId, RouteToSetAttributesRequest request, CancellationToken cancellationToken);
+}