Refactor new editor scene runtime ownership

new_editor/app/Scene/EditorSceneRuntime.h

@@ -0,0 +1,59 @@
+#pragma once
+
+#include "Scene/EditorSceneBridge.h"
+
+#include <optional>
+#include <string>
+#include <string_view>
+
+namespace XCEngine::Components {
+
+class GameObject;
+class Scene;
+
+} // namespace XCEngine::Components
+
+namespace XCEngine::UI::Editor::App {
+
+class EditorSceneRuntime {
+public:
+    bool Initialize(const std::filesystem::path& projectRoot);
+
+    void RefreshScene();
+    void EnsureSceneSelection();
+
+    const EditorStartupSceneResult& GetStartupResult() const;
+    ::XCEngine::Components::Scene* GetActiveScene() const;
+
+    bool HasSceneSelection() const;
+    std::optional<::XCEngine::Components::GameObject::ID> GetSelectedGameObjectId() const;
+    std::string GetSelectedItemId() const;
+    std::string GetSelectedDisplayName() const;
+    const ::XCEngine::Components::GameObject* GetSelectedGameObject() const;
+
+    bool SetSelection(std::string_view itemId);
+    bool SetSelection(::XCEngine::Components::GameObject::ID id);
+    void ClearSelection();
+
+    ::XCEngine::Components::GameObject* FindGameObject(std::string_view itemId) const;
+    bool RenameGameObject(
+        std::string_view itemId,
+        std::string_view newName);
+    bool DeleteGameObject(std::string_view itemId);
+    std::string DuplicateGameObject(std::string_view itemId);
+    bool ReparentGameObject(
+        std::string_view itemId,
+        std::string_view parentItemId);
+    bool MoveGameObjectToRoot(std::string_view itemId);
+
+private:
+    bool HasValidSelection() const;
+    bool SelectFirstAvailableGameObject();
+
+    std::filesystem::path m_projectRoot = {};
+    EditorStartupSceneResult m_startupSceneResult = {};
+    std::optional<::XCEngine::Components::GameObject::ID> m_selectedGameObjectId = std::nullopt;
+};
+
+} // namespace XCEngine::UI::Editor::App
+