fix(uns): guard ScriptedAlarmModal form rebuild against stray re-renders (code-review)

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Uns/ScriptedAlarmModal.razor

@@ -137,8 +137,25 @@
     private bool _busy;
     private string? _error;
 
+    // Tracks which open this modal last loaded for, so unrelated Blazor Server re-renders don't
+    // rebuild _form and clobber in-progress edits. Null while closed.
+    private string? _loadedKey;
+
     protected override void OnParametersSet()
     {
+        if (!Visible)
+        {
+            _loadedKey = null;   // closed → next open reloads fresh
+            return;
+        }
+
+        // Guard against unrelated re-renders. In Blazor Server any live-status push re-invokes
+        // OnParametersSet; without this the rebuild below would silently discard whatever the
+        // operator has typed. Only rebuild when the modal OPENS or the target entity CHANGES.
+        var key = IsNew ? "<new>" : Existing?.ScriptedAlarmId;
+        if (key == _loadedKey) return;   // same open, re-render → preserve in-progress form edits
+        _loadedKey = key;
+
         // Rebuild the working form whenever the host (re)opens the modal for a fresh target.
         if (IsNew)
         {