fix(uns): surface stale-row edits + dismiss modal on delete + @key rows (code-review)

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

@@ -162,7 +162,7 @@ else
                 <tbody>
                     @foreach (var t in _tags)
                     {
-                        <tr>
+                        <tr @key="t.TagId">
                             <td>@t.Name</td>
                             <td class="mono">@t.DriverInstanceId</td>
                             <td>@t.DataType</td>
@@ -207,7 +207,7 @@ else
                 <tbody>
                     @foreach (var v in _vtags)
                     {
-                        <tr>
+                        <tr @key="v.VirtualTagId">
                             <td>@v.Name</td>
                             <td>@v.DataType</td>
                             <td class="mono">@v.ScriptId</td>
@@ -289,6 +289,7 @@ else
 
     private async Task OpenAddTag()
     {
+        _tagError = null;
         _tagModalIsNew = true;
         _tagModalExisting = null;
         _tagDriverOptions = await Svc.LoadTagDriversForEquipmentAsync(EquipmentId!);
@@ -297,8 +298,9 @@ else
 
     private async Task OpenEditTag(string tagId)
     {
+        _tagError = null;
         var dto = await Svc.LoadTagAsync(tagId);
-        if (dto is null) { return; }
+        if (dto is null) { _tagError = "That tag no longer exists; the list was refreshed."; await ReloadTagsAsync(); return; }
         _tagModalIsNew = false;
         _tagModalExisting = dto;
         _tagDriverOptions = await Svc.LoadTagDriversForEquipmentAsync(EquipmentId!);
@@ -313,6 +315,7 @@ else
 
     private async Task DeleteTag(string tagId)
     {
+        _tagModalVisible = false;
         _tagError = null;
         // Load the tag fresh to capture its current RowVersion for the optimistic-concurrency delete.
         var dto = await Svc.LoadTagAsync(tagId);
@@ -331,6 +334,7 @@ else
 
     private async Task OpenAddVirtualTag()
     {
+        _vtagError = null;
         _vtagModalIsNew = true;
         _vtagModalExisting = null;
         _vtagScriptOptions = await Svc.LoadScriptsAsync();
@@ -339,8 +343,9 @@ else
 
     private async Task OpenEditVirtualTag(string vtagId)
     {
+        _vtagError = null;
         var dto = await Svc.LoadVirtualTagAsync(vtagId);
-        if (dto is null) { return; }
+        if (dto is null) { _vtagError = "That virtual tag no longer exists; the list was refreshed."; await ReloadVirtualTagsAsync(); return; }
         _vtagModalIsNew = false;
         _vtagModalExisting = dto;
         _vtagScriptOptions = await Svc.LoadScriptsAsync();
@@ -355,6 +360,7 @@ else
 
     private async Task DeleteVirtualTag(string vtagId)
     {
+        _vtagModalVisible = false;
         _vtagError = null;
         // Load the virtual tag fresh to capture its current RowVersion for the concurrency-guarded delete.
         var dto = await Svc.LoadVirtualTagAsync(vtagId);