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/Central/NoOpCentralAuditWriteFailureCounter.cs

@@ -0,0 +1,17 @@
+namespace ZB.MOM.WW.ScadaBridge.AuditLog.Central;
+
+/// <summary>
+/// Default <see cref="ICentralAuditWriteFailureCounter"/> binding used when
+/// the central health surface (<see cref="AuditCentralHealthSnapshot"/>) has
+/// not been wired (test composition roots, site-only hosts that incidentally
+/// resolve a <see cref="CentralAuditWriter"/>). Drops every increment on the
+/// floor. Mirrors <see cref="ZB.MOM.WW.ScadaBridge.AuditLog.Site.NoOpAuditWriteFailureCounter"/>.
+/// </summary>
+public sealed class NoOpCentralAuditWriteFailureCounter : ICentralAuditWriteFailureCounter
+{
+    /// <inheritdoc/>
+    public void Increment()
+    {
+        // intentional no-op
+    }
+}