feat(audit): M5.2 per-node stuck-count KPIs (T6) — repo per-node aggregation, actor message pair, CentralUI tiles

src/ZB.MOM.WW.ScadaBridge.Communication/CommunicationService.cs

@@ -525,6 +525,22 @@ public class CommunicationService
             request, _options.QueryTimeout, cancellationToken);
     }
 
+    /// <summary>
+    /// Gets per-node KPI metrics for the notification outbox.
+    /// Groups by <c>SourceNode</c> (e.g. <c>node-a</c>/<c>node-b</c>); rows with
+    /// a <c>NULL</c> node are omitted. Additive alongside
+    /// <see cref="GetPerSiteNotificationKpisAsync"/>.
+    /// </summary>
+    /// <param name="request">The per-node notification KPI request.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>The per-node notification KPI response.</returns>
+    public async Task<PerNodeNotificationKpiResponse> GetPerNodeNotificationKpisAsync(
+        PerNodeNotificationKpiRequest request, CancellationToken cancellationToken = default)
+    {
+        return await GetNotificationOutbox().Ask<PerNodeNotificationKpiResponse>(
+            request, _options.QueryTimeout, cancellationToken);
+    }
+
     // ── Site Call Audit (central-local actor — Asked directly, no SiteEnvelope) ──
 
     /// <summary>
@@ -579,6 +595,21 @@ public class CommunicationService
             request, _options.QueryTimeout, cancellationToken);
     }
 
+    /// <summary>
+    /// Gets per-node KPI metrics for site calls. Groups by <c>SourceNode</c>
+    /// (e.g. <c>node-a</c>/<c>node-b</c>); rows with a <c>NULL</c> node are
+    /// omitted. Additive alongside <see cref="GetPerSiteSiteCallKpisAsync"/>.
+    /// </summary>
+    /// <param name="request">The per-node site call KPI request.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>The per-node site call KPI response.</returns>
+    public async Task<PerNodeSiteCallKpiResponse> GetPerNodeSiteCallKpisAsync(
+        PerNodeSiteCallKpiRequest request, CancellationToken cancellationToken = default)
+    {
+        return await GetSiteCallAudit().Ask<PerNodeSiteCallKpiResponse>(
+            request, _options.QueryTimeout, cancellationToken);
+    }
+
     /// <summary>
     /// Task 5 (#22): relays an operator Retry of a parked cached call to its
     /// owning site. The <c>SiteCallAuditActor</c> is Asked directly (it is