perf(adminui): drift chip recomposes only when the config-edit watermark moves

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Deployments.razor

@@ -6,13 +6,13 @@
 @using ZB.MOM.WW.OtOpcUa.Configuration
 @using ZB.MOM.WW.OtOpcUa.Configuration.Entities
 @using ZB.MOM.WW.OtOpcUa.Configuration.Enums
-@using ZB.MOM.WW.OtOpcUa.ControlPlane.AdminOperations
 
 @attribute [Authorize(Policy = AdminUiPolicies.ConfigEditor)]
 
 @inject IDbContextFactory<OtOpcUaConfigDbContext> DbFactory
 @inject IAdminOperationsClient AdminOps
 @inject AuthenticationStateProvider AuthState
+@inject ZB.MOM.WW.OtOpcUa.AdminUI.Deployments.DeploymentDriftProbe DriftProbe
 @rendermode InteractiveServer
 
 <PageTitle>Deployments</PageTitle>
@@ -104,16 +104,13 @@
             .Take(50)
             .ToListAsync();
 
-        // Drift: if no sealed deployment yet, no drift to report. Otherwise compare the latest
-        // sealed revision hash to a fresh snapshot of the live-edit state.
+        // Drift: if no sealed deployment yet, no drift to report. Otherwise the probe compares the
+        // latest sealed revision hash to the live-edit state — recomposing only when the ConfigEdit
+        // audit watermark has moved, so a re-render of this page is not a full fleet snapshot.
         var latestSealed = _deployments.FirstOrDefault(d => d.Status == DeploymentStatus.Sealed);
-        if (latestSealed is null)
-        {
-            _drift = null;
-            return;
-        }
-        var current = await ConfigComposer.SnapshotAndFlattenAsync(db);
-        _drift = !string.Equals(current.RevisionHash, latestSealed.RevisionHash, StringComparison.Ordinal);
+        _drift = latestSealed is null
+            ? null
+            : await DriftProbe.GetDriftAsync(latestSealed.RevisionHash, CancellationToken.None);
     }
 
     private async Task StartDeploymentAsync()