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.

F4SD-ActionConnector/Events/ActionCompletedEventArgs.cs

@@ -0,0 +1,21 @@
+using System;
+using F4SD.ActionConnector.Models;
+using F4SD.ActionConnector.Payloads;
+
+namespace F4SD.ActionConnector.Events
+{
+    /// <summary>
+    /// Raised after a sync action finishes. Carries the result for Cockpit integration.
+    /// </summary>
+    public sealed class ActionCompletedEventArgs : EventArgs
+    {
+        public ActionResult Result { get; }
+        public ActionContext Context { get; }
+
+        public ActionCompletedEventArgs(ActionResult result, ActionContext context)
+        {
+            Result = result;
+            Context = context;
+        }
+    }
+}