chore: Introduce Qodana static analysis configuration and apply minor code formatting and C# 12 collection expressions.

Core/Skills/ISkill.cs

@@ -5,9 +5,9 @@ public interface ISkill
     string Name { get; }
     string Description { get; }
     string[] Hotwords { get; }
-    
+
     bool HandlesExecution { get; }
-    
+
     string GetSystemPrompt(string rawTranscript);
     void Execute(string llmResult);
 }