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.Host/NodeIdentityProvider.cs

@@ -0,0 +1,25 @@
+using Microsoft.Extensions.Options;
+using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Services;
+
+namespace ZB.MOM.WW.ScadaBridge.Host;
+
+/// <summary>
+/// Binds <see cref="INodeIdentityProvider"/> to <see cref="NodeOptions.NodeName"/>.
+/// Empty or whitespace values are normalised to <c>null</c>; otherwise the value
+/// is returned trimmed.
+/// </summary>
+internal sealed class NodeIdentityProvider : INodeIdentityProvider
+{
+    /// <inheritdoc />
+    public string? NodeName { get; }
+
+    /// <summary>
+    /// Initializes a new <see cref="NodeIdentityProvider"/> from the given node options.
+    /// </summary>
+    /// <param name="nodeOptions">Node options whose <see cref="NodeOptions.NodeName"/> is normalised.</param>
+    public NodeIdentityProvider(IOptions<NodeOptions> nodeOptions)
+    {
+        var configured = nodeOptions.Value.NodeName;
+        NodeName = string.IsNullOrWhiteSpace(configured) ? null : configured.Trim();
+    }
+}