重构ui_editor：向引擎核心类型对齐

- 删除UI::Event，使用XCEngine::Core::Event替代
- GameObject.h重构，Component添加friend class Entity
- LogEntry使用XCEngine::Debug::LogLevel
- SceneManager/SelectionManager使用XCEngine::Core::Event
- LogSystem使用XCEngine::Debug::LogLevel
- CMakeLists.txt添加engine/include路径

ui_editor/src/Core/GameObject.h

@@ -7,15 +7,32 @@
 #include <functional>
 #include <cstdint>
 
+#include <XCEngine/Core/Event.h>
+
 namespace UI {
 
 using EntityID = uint64_t;
-constexpr EntityID INVALID_ENTITY = 0;
+constexpr EntityID INVALID_ENTITY_ID = 0;
 
 class Component {
 public:
     virtual ~Component() = default;
     virtual std::string GetName() const = 0;
+    
+    virtual void Awake() {}
+    virtual void Start() {}
+    virtual void Update(float deltaTime) {}
+    virtual void OnDestroy() {}
+    
+    class Entity* GetEntity() const { return m_entity; }
+    bool IsEnabled() const { return m_enabled; }
+    void SetEnabled(bool enabled) { m_enabled = enabled; }
+    
+protected:
+    class Entity* m_entity = nullptr;
+    bool m_enabled = true;
+    
+    friend class Entity;
 };
 
 class TransformComponent : public Component {
@@ -35,10 +52,11 @@ public:
     std::string GetName() const override { return "Mesh Renderer"; }
 };
 
-struct Entity {
-    EntityID id = INVALID_ENTITY;
+class Entity {
+public:
+    EntityID id = INVALID_ENTITY_ID;
     std::string name;
-    EntityID parent = INVALID_ENTITY;
+    EntityID parent = INVALID_ENTITY_ID;
     std::vector<EntityID> children;
     std::vector<std::unique_ptr<Component>> components;
     bool selected = false;
@@ -46,6 +64,7 @@ struct Entity {
     template<typename T, typename... Args>
     T* AddComponent(Args&&... args) {
         auto comp = std::make_unique<T>(std::forward<Args>(args)...);
+        comp->m_entity = this;
         T* ptr = comp.get();
         components.push_back(std::move(comp));
         return ptr;
@@ -60,6 +79,17 @@ struct Entity {
         }
         return nullptr;
     }
+    
+    template<typename T>
+    std::vector<T*> GetComponents() {
+        std::vector<T*> result;
+        for (auto& comp : components) {
+            if (auto casted = dynamic_cast<T*>(comp.get())) {
+                result.push_back(casted);
+            }
+        }
+        return result;
+    }
 };
 
 using ComponentInspectorFn = std::function<void(Component*)>;
@@ -98,4 +128,4 @@ private:
     std::unordered_map<std::string, std::function<std::unique_ptr<Component>()>> m_factories;
 };
 
-}
+}