feat: add unreal-engine-cpp-pro (PR #39)

Co-authored-by: junited31 <junited31@users.noreply.github.com>

skills/unreal-engine-cpp-pro/SKILL.md

@@ -1,32 +1,12 @@
 ---
 name: unreal-engine-cpp-pro
 description: Expert guide for Unreal Engine 5.x C++ development, covering UObject hygiene, performance patterns, and best practices.
-risk: safe
-source: self
 ---
 
 # Unreal Engine C++ Pro
 
 This skill provides expert-level guidelines for developing with Unreal Engine 5 using C++. It focuses on writing robust, performant, and standard-compliant code.
 
-## When to Use
-
-Use this skill when:
-- Developing C++ code for Unreal Engine 5.x projects
-- Writing Actors, Components, or UObject-derived classes
-- Optimizing performance-critical code in Unreal Engine
-- Debugging memory leaks or garbage collection issues
-- Implementing Blueprint-exposed functionality
-- Following Epic Games' coding standards and conventions
-- Working with Unreal's reflection system (UCLASS, USTRUCT, UFUNCTION)
-- Managing asset loading and soft references
-
-Do not use this skill when:
-- Working with Blueprint-only projects (no C++ code)
-- Developing for Unreal Engine versions prior to 5.x
-- Working on non-Unreal game engines
-- The task is unrelated to Unreal Engine development
-
 ## Core Principles
 
 1.  **UObject & Garbage Collection**: