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.Commons/Interfaces/Services/IInstanceLocator.cs

@@ -0,0 +1,18 @@
+namespace ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Services;
+
+/// <summary>
+/// Resolves an instance unique name to its site identifier.
+/// Used by Inbound API's Route.To() to determine which site to route requests to.
+/// </summary>
+public interface IInstanceLocator
+{
+    /// <summary>
+    /// Resolves the site identifier for a given instance unique name.
+    /// Returns null if the instance is not found.
+    /// </summary>
+    /// <param name="instanceUniqueName">System-wide unique name of the instance to look up.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    Task<string?> GetSiteIdForInstanceAsync(
+        string instanceUniqueName,
+        CancellationToken cancellationToken = default);
+}