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-Docu-Engine/DocuEngineParser/ParsingContext.cs

@@ -0,0 +1,13 @@
+using System.Text;
+
+namespace F4SD.DocuEngine.DocuEngineParser
+{
+    internal class ParsingContext
+    {
+        private readonly StringBuilder _stringBuilder = new StringBuilder();
+
+        public void Append(string text) => _stringBuilder.Append(text);
+
+        public string GetFinalText() => _stringBuilder.ToString();
+    }
+}