feat(adminui): Deployments page with drift indicator and Deploy button

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

@@ -0,0 +1,132 @@
+@page "/deployments"
+@using Microsoft.AspNetCore.Authorization
+@using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.Commons.Interfaces
+@using ZB.MOM.WW.OtOpcUa.Commons.Messages.Admin
+@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(Roles = "FleetAdmin,ConfigEditor")]
+
+@inject IDbContextFactory<OtOpcUaConfigDbContext> DbFactory
+@inject IAdminOperationsClient AdminOps
+@rendermode InteractiveServer
+
+<PageTitle>Deployments</PageTitle>
+
+<h1>Deployments</h1>
+
+<div class="d-flex align-items-center gap-3 mb-3">
+    <button class="btn btn-primary" @onclick="StartDeploymentAsync" disabled="@_busy">
+        @(_busy ? "Deploying…" : "Deploy current configuration")
+    </button>
+
+    @if (_drift is not null)
+    {
+        <span class="badge @(_drift.Value ? "bg-warning text-dark" : "bg-success")">
+            @(_drift.Value ? "Configuration drift" : "In sync")
+        </span>
+    }
+</div>
+
+@if (_lastMessage is not null)
+{
+    <div class="alert @(_lastSuccess ? "alert-success" : "alert-danger")">
+        @_lastMessage
+    </div>
+}
+
+<table class="table table-striped table-sm">
+    <thead>
+        <tr>
+            <th>Deployment</th>
+            <th>Revision</th>
+            <th>Status</th>
+            <th>Created by</th>
+            <th>Created (UTC)</th>
+            <th>Sealed (UTC)</th>
+        </tr>
+    </thead>
+    <tbody>
+        @foreach (var d in _deployments)
+        {
+            <tr>
+                <td><code>@Short(d.DeploymentId)</code></td>
+                <td><code>@d.RevisionHash[..12]…</code></td>
+                <td>@d.Status</td>
+                <td>@d.CreatedBy</td>
+                <td>@d.CreatedAtUtc.ToString("u")</td>
+                <td>@(d.SealedAtUtc?.ToString("u") ?? "—")</td>
+            </tr>
+        }
+    </tbody>
+</table>
+
+@code {
+    private IReadOnlyList<Deployment> _deployments = Array.Empty<Deployment>();
+    private bool _busy;
+    private bool _lastSuccess;
+    private string? _lastMessage;
+    private bool? _drift;
+
+    protected override async Task OnInitializedAsync()
+    {
+        await ReloadAsync();
+    }
+
+    private async Task ReloadAsync()
+    {
+        await using var db = await DbFactory.CreateDbContextAsync();
+        _deployments = await db.Deployments
+            .AsNoTracking()
+            .OrderByDescending(d => d.CreatedAtUtc)
+            .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.
+        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);
+    }
+
+    private async Task StartDeploymentAsync()
+    {
+        _busy = true;
+        _lastMessage = null;
+        try
+        {
+            var result = await AdminOps.StartDeploymentAsync(
+                createdBy: "(current user)", // F18: thread HttpContext.User.Identity.Name through
+                ct: CancellationToken.None);
+
+            _lastSuccess = result.Outcome == StartDeploymentOutcome.Accepted;
+            _lastMessage = result.Outcome switch
+            {
+                StartDeploymentOutcome.Accepted => $"Deployment {Short(result.DeploymentId!.Value.Value)} dispatched (rev {result.RevisionHash!.Value.Value[..12]}…).",
+                StartDeploymentOutcome.AnotherDeploymentInFlight => result.Message ?? "Another deployment is already in flight.",
+                StartDeploymentOutcome.NoChanges => "No changes detected since the last sealed deployment.",
+                _ => result.Message ?? "Deployment rejected.",
+            };
+            await ReloadAsync();
+        }
+        catch (Exception ex)
+        {
+            _lastSuccess = false;
+            _lastMessage = $"Deploy failed: {ex.Message}";
+        }
+        finally
+        {
+            _busy = false;
+        }
+    }
+
+    private static string Short(Guid id) => id.ToString("N")[..8];
+}

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/_Imports.razor

@@ -0,0 +1,7 @@
+@using Microsoft.AspNetCore.Components
+@using Microsoft.AspNetCore.Components.Authorization
+@using Microsoft.AspNetCore.Components.Forms
+@using Microsoft.AspNetCore.Components.Routing
+@using Microsoft.AspNetCore.Components.Web
+@using static Microsoft.AspNetCore.Components.Web.RenderMode
+@using Microsoft.JSInterop