Override the ToString method for models

app/MindWork AI Studio/Provider/Model.cs

@@ -4,4 +4,11 @@ namespace AIStudio.Provider;
 /// The data model for the model to use.
 /// </summary>
 /// <param name="Id">The model's ID.</param>
-public readonly record struct Model(string Id);
+public readonly record struct Model(string Id)
+{
+    #region Overrides of ValueType
+
+    public override string ToString() => string.IsNullOrWhiteSpace(this.Id) ? "no model selected" : this.Id;
+
+    #endregion
+}