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.AuditLog/Site/Telemetry/NoOpSiteStreamAuditClient.cs

@@ -0,0 +1,51 @@
+using ZB.MOM.WW.ScadaBridge.Communication.Grpc;
+
+namespace ZB.MOM.WW.ScadaBridge.AuditLog.Site.Telemetry;
+
+/// <summary>
+/// Default <see cref="ISiteStreamAuditClient"/> registered by
+/// <see cref="ZB.MOM.WW.ScadaBridge.AuditLog.ServiceCollectionExtensions.AddAuditLog"/>.
+/// It is a no-op binding for composition roots that have no
+/// <c>SiteCommunicationActor</c> — central and test roots. Site roles override
+/// it in the Host with the ClusterClient-based
+/// <see cref="ClusterClientSiteAuditClient"/>, which actually forwards audit
+/// telemetry to central.
+/// </summary>
+/// <remarks>
+/// <para>
+/// Returns an empty <see cref="IngestAck"/> so the
+/// <see cref="SiteAuditTelemetryActor"/> doesn't flip any rows to
+/// <c>Forwarded</c> when this NoOp is in effect — rows stay <c>Pending</c>
+/// until a real client (or a test stub) takes over.
+/// </para>
+/// <para>
+/// Audit-write paths are best-effort by contract: a NoOp client keeps the
+/// host running cleanly and is consistent with "audit-write failures never
+/// abort the user-facing action".
+/// </para>
+/// </remarks>
+public sealed class NoOpSiteStreamAuditClient : ISiteStreamAuditClient
+{
+    private static readonly IngestAck EmptyAck = new();
+
+    /// <inheritdoc/>
+    public Task<IngestAck> IngestAuditEventsAsync(AuditEventBatch batch, CancellationToken ct)
+    {
+        ArgumentNullException.ThrowIfNull(batch);
+        // Empty ack — no EventIds will be flipped to Forwarded, so rows stay
+        // Pending until the real ClusterClientSiteAuditClient (or a test stub)
+        // takes over.
+        return Task.FromResult(EmptyAck);
+    }
+
+    /// <inheritdoc/>
+    public Task<IngestAck> IngestCachedTelemetryAsync(CachedTelemetryBatch batch, CancellationToken ct)
+    {
+        ArgumentNullException.ThrowIfNull(batch);
+        // Empty ack — same rationale as IngestAuditEventsAsync. The site still
+        // writes the audit + tracking rows to its SQLite stores authoritatively;
+        // central-side state only materialises once the real
+        // ClusterClientSiteAuditClient (or a test stub) is wired in.
+        return Task.FromResult(EmptyAck);
+    }
+}