feat: expand cockpit integrations and support workflows

Add Phoenix remote desktop, action connector, documentation engine, and gamification support. Refactor support-case processing and search/action UI, and update installer assets and dependencies.

FasdDesktopUi/Basics/Models/DataCanvasDataModel.cs

@@ -119,6 +119,9 @@ namespace FasdDesktopUi.Basics.Models
             {
                 try
                 {
+                    if (actionSteps is null)
+                        return;
+
                     foreach (var step in actionSteps)
                     {
                         if (step.StepType.Equals(type) && step.QuickActionName.Equals(quickActionName))