feat(adminui): F15 Phase C — config-tab read views (Equipment/UNS/Namespaces/Drivers/Tags/ACLs)

Per Q3 of the rebuild plan, each v1 ClusterDetail tab becomes a separate
route under /clusters/{id}/<tab>. This batch adds read-only table views
for the six core config entity types; live-edit forms with RowVersion
concurrency land in Phase C.2 once the read-view shape is reviewed.

- ClusterEquipment    /clusters/{id}/equipment   — joins via DriverInstance
                                                   so the cluster scope works
- ClusterUns          /clusters/{id}/uns         — Areas + Lines tables
- ClusterNamespaces   /clusters/{id}/namespaces  — Kind + URI + Enabled chip
- ClusterDrivers      /clusters/{id}/drivers     — collapsed list with JSON
                                                   config expandable per Q1
                                                   (typed editors deferred)
- ClusterTags         /clusters/{id}/tags        — first 200 by name + filter
- ClusterAcls         /clusters/{id}/acls        — LDAP group + scope +
                                                   NodePermissions bits

Shared ClusterNav.razor extracted; ClusterOverview + ClusterRedundancy
updated to use it. _Imports.razor adds Components.Shared so the shared
nav is in scope across pages.

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

@@ -0,0 +1,86 @@
+@page "/clusters/{ClusterId}/drivers"
+@attribute [Microsoft.AspNetCore.Authorization.Authorize]
+@rendermode RenderMode.InteractiveServer
+@using Microsoft.EntityFrameworkCore
+@using ZB.MOM.WW.OtOpcUa.Configuration
+@using ZB.MOM.WW.OtOpcUa.Configuration.Entities
+@inject IDbContextFactory<OtOpcUaConfigDbContext> DbFactory
+
+<div class="d-flex justify-content-between align-items-center mb-3">
+    <h4 class="mb-0">Drivers &middot; <span class="mono">@ClusterId</span></h4>
+</div>
+
+<ClusterNav ClusterId="@ClusterId" ActiveTab="drivers" />
+
+@if (_rows is null)
+{
+    <p>Loading…</p>
+}
+else
+{
+    <section class="panel notice rise" style="animation-delay:.02s">
+        Per Q1 of the AdminUI rebuild plan, typed driver editors (Modbus, FOCAS) are deferred.
+        The expanded view below shows raw JSON config. Live editing — including a generic JSON
+        editor and per-driver-type forms when operators ask — lands in a Phase C.2 follow-up.
+    </section>
+
+    <section class="panel rise mt-3" style="animation-delay:.08s">
+        <div class="panel-head">@_rows.Count driver instance@(_rows.Count == 1 ? "" : "s")</div>
+        @if (_rows.Count == 0)
+        {
+            <div style="padding:1rem" class="text-muted">No driver instances for this cluster.</div>
+        }
+        else
+        {
+            @foreach (var d in _rows)
+            {
+                <details style="border-top:1px solid var(--rule)">
+                    <summary style="padding:.75rem 1rem;cursor:pointer">
+                        <span class="mono">@d.DriverInstanceId</span>
+                        &middot; <span>@d.Name</span>
+                        &middot; <span class="chip chip-idle ms-1">@d.DriverType</span>
+                        @if (!d.Enabled) { <span class="chip chip-idle ms-1">Disabled</span> }
+                        <span class="text-muted small ms-2">ns=@d.NamespaceId</span>
+                    </summary>
+                    <div style="padding:0 1rem 1rem">
+                        <pre class="mono small" style="background:var(--surface-2);padding:1rem;border-radius:4px;overflow:auto">@FormatJson(d.DriverConfig)</pre>
+                        @if (!string.IsNullOrWhiteSpace(d.ResilienceConfig))
+                        {
+                            <div class="text-muted small mt-2">Resilience overrides:</div>
+                            <pre class="mono small" style="background:var(--surface-2);padding:1rem;border-radius:4px;overflow:auto">@FormatJson(d.ResilienceConfig)</pre>
+                        }
+                    </div>
+                </details>
+            }
+        }
+    </section>
+}
+
+@code {
+    [Parameter] public string ClusterId { get; set; } = "";
+    private List<DriverInstance>? _rows;
+
+    protected override async Task OnInitializedAsync()
+    {
+        await using var db = await DbFactory.CreateDbContextAsync();
+        _rows = await db.DriverInstances.AsNoTracking()
+            .Where(d => d.ClusterId == ClusterId)
+            .OrderBy(d => d.DriverInstanceId)
+            .ToListAsync();
+    }
+
+    private static string FormatJson(string raw)
+    {
+        if (string.IsNullOrWhiteSpace(raw)) return "";
+        try
+        {
+            using var doc = System.Text.Json.JsonDocument.Parse(raw);
+            return System.Text.Json.JsonSerializer.Serialize(doc.RootElement,
+                new System.Text.Json.JsonSerializerOptions { WriteIndented = true });
+        }
+        catch
+        {
+            return raw;
+        }
+    }
+}