feat(adminui): /fleet shows 'Applied (degraded)', /deployments 'Sealed (degraded)' (#601)

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe

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

@@ -57,7 +57,8 @@
             <tr>
                 <td><code>@Short(d.DeploymentId)</code></td>
                 <td><code>@DisplayText.Abbreviate(d.RevisionHash, 12)</code></td>
-                <td>@d.Status</td>
+                @* #601: Sealed + a reason = sealed with a degraded address-space apply on some node(s). *@
+                <td title="@(d.FailureReason ?? "")">@(d.Status == DeploymentStatus.Sealed && !string.IsNullOrEmpty(d.FailureReason) ? "Sealed (degraded)" : d.Status.ToString())</td>
                 <td>@d.CreatedBy</td>
                 <td>@d.CreatedAtUtc.ToString("u")</td>
                 <td>@(d.SealedAtUtc?.ToString("u") ?? "—")</td>
@@ -77,7 +78,8 @@
         DeploymentStatus Status,
         string CreatedBy,
         DateTime CreatedAtUtc,
-        DateTime? SealedAtUtc);
+        DateTime? SealedAtUtc,
+        string? FailureReason);
 
     private IReadOnlyList<DeploymentRow> _deployments = Array.Empty<DeploymentRow>();
     private bool _busy;
@@ -102,7 +104,8 @@
                 d.Status,
                 d.CreatedBy,
                 d.CreatedAtUtc,
-                d.SealedAtUtc))
+                d.SealedAtUtc,
+                d.FailureReason))
             .Take(50)
             .ToListAsync();