Add agentNames to the endpoint index

src/Managing.Api/Models/Responses/PaginatedAgentIndexResponse.cs

@@ -54,4 +54,9 @@ public class PaginatedAgentIndexResponse
     /// Sort order (asc or desc)
     /// </summary>
     public string SortOrder { get; set; } = "desc";
+
+    /// <summary>
+    /// Comma-separated list of agent names used for filtering (if any)
+    /// </summary>
+    public string? FilteredAgentNames { get; set; }
 }