feat(runtime): HistorianAdapter + PeerOpcUaProbe + DbHealthProbe actors (engine wiring tracked as F11/F12)

src/Server/ZB.MOM.WW.OtOpcUa.Runtime/Historian/HistorianAdapterActor.cs

@@ -0,0 +1,32 @@
+using Akka.Actor;
+using Akka.Event;
+
+namespace ZB.MOM.WW.OtOpcUa.Runtime.Historian;
+
+/// <summary>
+/// Wraps the named-pipe IPC to the Wonderware historian sidecar with a store-and-forward
+/// SQLite buffer for pipe outages. Engine wiring (named-pipe client + <c>SqliteStoreAndForwardSink</c>)
+/// is staged for follow-up F11.
+/// </summary>
+public sealed class HistorianAdapterActor : ReceiveActor
+{
+    public sealed record HistoryRow(string Source, string AttributeId, object? Value, DateTime TimestampUtc);
+
+    private readonly ILoggingAdapter _log = Context.GetLogger();
+    private int _buffered;
+
+    public int BufferedCount => _buffered;
+
+    public static Props Props() => Akka.Actor.Props.Create(() => new HistorianAdapterActor());
+
+    public HistorianAdapterActor()
+    {
+        Receive<HistoryRow>(row =>
+        {
+            // F11: dispatch to named-pipe sink; on disconnect → buffer in SQLite.
+            Interlocked.Increment(ref _buffered);
+            _log.Debug("Historian: buffered row for {Source}/{Attr} (sink wiring staged for F11)",
+                row.Source, row.AttributeId);
+        });
+    }
+}