feat(uns): equipment CSV import folded into the tree toolbar

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

@@ -21,7 +21,7 @@
                    @bind="_filter" @bind:event="oninput" />
             <button type="button" class="btn btn-outline-secondary btn-sm" @onclick="ExpandAll">Expand all</button>
             <button type="button" class="btn btn-outline-secondary btn-sm" @onclick="CollapseAll">Collapse all</button>
-            <button type="button" class="btn btn-outline-primary btn-sm" disabled>Import equipment CSV</button>
+            <button type="button" class="btn btn-outline-primary btn-sm" @onclick="OpenImportModal">Import equipment CSV</button>
         </div>
     </div>
 
@@ -89,6 +89,10 @@
                  OnSaved="OnEquipmentChildModalSavedAsync"
                  OnCancel="CloseModals" />
 
+<ImportEquipmentModal Visible="_importModalVisible"
+                      OnImported="OnImportedAsync"
+                      OnCancel="CloseModals" />
+
 @if (_confirmNode is not null)
 {
     <div class="modal-backdrop fade show" style="display:block"></div>
@@ -158,6 +162,9 @@
     private VirtualTagEditDto? _vtagModalExisting;
     private IReadOnlyList<(string Id, string Display)> _vtagModalScriptOptions = Array.Empty<(string, string)>();
 
+    // --- Import-equipment-CSV modal state ---
+    private bool _importModalVisible;
+
     // --- Owning equipment to refresh in place after a tag/virtual-tag mutation ---
     private string? _childRefreshEquipmentId;
 
@@ -357,6 +364,24 @@
         }
     }
 
+    /// <summary>Opens the bulk equipment-CSV import modal.</summary>
+    private void OpenImportModal()
+    {
+        CloseModals();
+        _importModalVisible = true;
+    }
+
+    /// <summary>
+    /// Handles the import modal's close after a run. A bulk import can add equipment across many
+    /// lines and clusters, so the whole structural tree is reloaded rather than refreshed in place.
+    /// </summary>
+    private async Task OnImportedAsync()
+    {
+        _roots = await Svc.LoadStructureAsync();
+        CloseModals();
+        StateHasChanged();
+    }
+
     /// <summary>Opens the delete-confirm modal for a node, stashing it as the pending target.</summary>
     private void HandleDelete(UnsNode node)
     {
@@ -549,6 +574,7 @@
         _vtagModalExisting = null;
         _vtagModalEquipmentId = null;
         _vtagModalScriptOptions = Array.Empty<(string, string)>();
+        _importModalVisible = false;
         _childRefreshEquipmentId = null;
         _confirmNode = null;
         _confirmError = null;