fixed final bugs

app/MindWork AI Studio/Components/DynamicAssistantDropdown.razor

@@ -6,6 +6,7 @@
             T="string"
             SelectedValues="@this.SelectedValues"
             SelectedValuesChanged="@this.OnSelectedValuesChanged"
+            MultiSelectionTextFunc="@this.GetMultiSelectionText"
             Label="@this.Label"
             HelperText="@this.HelperText"
             Placeholder="@this.Default.Display"
@@ -18,7 +19,7 @@
             MultiSelection="@true"
             SelectAll="@this.HasSelectAll"
             SelectAllText="@this.SelectAllText">
-            @foreach (var item in Items)
+            @foreach (var item in this.GetRenderedItems())
             {
                 <MudSelectItem Value="@item.Value">
                     @item.Display
@@ -41,7 +42,7 @@
             AdornmentColor="@this.IconColor"
             Variant="@this.Variant"
             Margin="Margin.Normal">
-            @foreach (var item in Items)
+            @foreach (var item in this.GetRenderedItems())
             {
                 <MudSelectItem Value="@item.Value">
                     @item.Display

app/MindWork AI Studio/Components/DynamicAssistantDropdown.razor.cs

@@ -71,6 +71,38 @@ namespace AIStudio.Components
             await this.SelectedValuesChanged.InvokeAsync(updatedValues);
         }
 
+        private List<AssistantDropdownItem> GetRenderedItems()
+        {
+            var items = this.Items ?? [];
+            if (string.IsNullOrWhiteSpace(this.Default.Value))
+                return items;
+
+            if (items.Any(item => string.Equals(item.Value, this.Default.Value, StringComparison.Ordinal)))
+                return items;
+
+            return [this.Default, .. items];
+        }
+
+        private string GetMultiSelectionText(List<string?>? selectedValues)
+        {
+            if (selectedValues is null || selectedValues.Count == 0)
+                return this.Default.Display;
+
+            var labels = selectedValues
+                .Where(value => !string.IsNullOrWhiteSpace(value))
+                .Select(value => this.ResolveDisplayText(value!))
+                .Where(value => !string.IsNullOrWhiteSpace(value))
+                .ToList();
+
+            return labels.Count == 0 ? this.Default.Display : string.Join(", ", labels);
+        }
+
+        private string ResolveDisplayText(string value)
+        {
+            var item = this.GetRenderedItems().FirstOrDefault(item => string.Equals(item.Value, value, StringComparison.Ordinal));
+            return item?.Display ?? value;
+        }
+
         private string MergeClasses(string custom, string fallback)
         {
             var trimmedCustom = custom?.Trim() ?? string.Empty;