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.HealthMonitoring/IClusterNodeProvider.cs

@@ -0,0 +1,20 @@
+using ZB.MOM.WW.ScadaBridge.Commons.Messages.Health;
+
+namespace ZB.MOM.WW.ScadaBridge.HealthMonitoring;
+
+/// <summary>
+/// Provides cluster node status information for health reporting.
+/// Implemented by the Host project which has access to the Akka.NET actor system.
+/// </summary>
+public interface IClusterNodeProvider
+{
+    /// <summary>Returns the current status of all cluster nodes for the provider's role scope.</summary>
+    IReadOnlyList<NodeStatus> GetClusterNodes();
+
+    /// <summary>
+    /// True when this node is currently the cluster leader (Primary) for the
+    /// provider's role scope. Used by the central report loop to decide which
+    /// node should generate the "central" health report.
+    /// </summary>
+    bool SelfIsPrimary { get; }
+}