Fix editor selection system: SelectionManager ID types and Scene lookup

- SelectionManager now implements ISelectionManager interface with uint64_t IDs
- Remove SelectionManager/SceneManager circular dependency via EventBus
- Add Scene::FindByID() for proper ID-based entity lookup
- SceneManager::GetEntity() now uses FindByID instead of name-based Find
- Fix editor CMakeLists.txt XCEngine.lib path
- EventBus now thread-safe with shared_mutex

editor/src/Managers/SceneManager.h

@@ -13,14 +13,11 @@
 #include <XCEngine/Components/GameObject.h>
 #include <XCEngine/Scene/Scene.h>
 
-#include "Core/ISelectionManager.h"
 #include "Core/ISceneManager.h"
 
 namespace XCEngine {
 namespace Editor {
 
-class ISelectionManager;
-
 class SceneManager : public ISceneManager {
 public:
     SceneManager();
@@ -28,11 +25,11 @@ public:
     ::XCEngine::Components::GameObject* CreateEntity(const std::string& name, ::XCEngine::Components::GameObject* parent = nullptr);
 
     ::XCEngine::Components::GameObject* GetEntity(::XCEngine::Components::GameObject::ID id) {
-        return m_scene ? m_scene->Find(std::to_string(id)) : nullptr;
+        return m_scene ? m_scene->FindByID(id) : nullptr;
     }
 
     const ::XCEngine::Components::GameObject* GetEntity(::XCEngine::Components::GameObject::ID id) const {
-        return m_scene ? m_scene->Find(std::to_string(id)) : nullptr;
+        return m_scene ? m_scene->FindByID(id) : nullptr;
     }
 
     const std::vector<::XCEngine::Components::GameObject*>& GetRootEntities() const {
@@ -51,8 +48,6 @@ public:
     void CreateDemoScene();
 
     bool HasClipboardData() const { return m_clipboard.has_value(); }
-    
-    void SetSelectionManager(ISelectionManager* selectionManager);
 
     ::XCEngine::Core::Event<::XCEngine::Components::GameObject::ID> OnEntityCreated;
     ::XCEngine::Core::Event<::XCEngine::Components::GameObject::ID> OnEntityDeleted;
@@ -74,7 +69,6 @@ private:
     ::XCEngine::Components::Scene* m_scene = nullptr;
     std::vector<::XCEngine::Components::GameObject*> m_rootEntities;
     std::optional<ClipboardData> m_clipboard;
-    ISelectionManager* m_selectionManager = nullptr;
 };
 
 }