refactor(editor): isolate scene backend boundary

tests/UI/Editor/unit/test_inspector_presentation.cpp

@@ -3,6 +3,7 @@
 #include "Inspector/InspectorPresentationModel.h"
 #include "Inspector/InspectorSubject.h"
 #include "Scene/EditorSceneRuntime.h"
+#include "Scene/EngineEditorSceneBackend.h"
 
 #include <XCEngine/Components/CameraComponent.h>
 #include <XCEngine/Components/GameObject.h>
@@ -87,6 +88,10 @@ void SaveMainScene(const TemporaryProjectRoot& projectRoot) {
     scene.Save(scenePath.string());
 }
 
+void BindEngineSceneBackend(EditorSceneRuntime& runtime) {
+    runtime.SetBackend(CreateEngineEditorSceneBackend());
+}
+
 const UIEditorPropertyGridSection* FindSection(
     const InspectorPresentationModel& model,
     std::string_view title) {
@@ -126,6 +131,7 @@ const InspectorPresentationComponentBinding* FindBinding(
 
 TEST(InspectorPresentationModelTests, EmptySubjectBuildsDefaultEmptyState) {
     EditorSceneRuntime runtime = {};
+    BindEngineSceneBackend(runtime);
     const InspectorPresentationModel model =
         BuildInspectorPresentationModel(
             {},
@@ -150,6 +156,7 @@ TEST(InspectorPresentationModelTests, ProjectAssetSubjectBuildsIdentityAndLocati
         std::filesystem::path("D:/Xuanchi/Main/XCEngine/project/Assets/Materials/Test.mat");
 
     EditorSceneRuntime runtime = {};
+    BindEngineSceneBackend(runtime);
     const InspectorPresentationModel model =
         BuildInspectorPresentationModel(
             subject,
@@ -190,6 +197,7 @@ TEST(InspectorPresentationModelTests, SceneObjectSubjectBuildsRegisteredComponen
     SaveMainScene(projectRoot);
 
     EditorSceneRuntime runtime = {};
+    BindEngineSceneBackend(runtime);
     ASSERT_TRUE(runtime.Initialize(projectRoot.Root()));
     Scene* scene = runtime.GetActiveScene();
     ASSERT_NE(scene, nullptr);
@@ -261,6 +269,7 @@ TEST(InspectorPresentationModelTests, CameraSkyboxMaterialBuildsAssetField) {
     SaveMainScene(projectRoot);
 
     EditorSceneRuntime runtime = {};
+    BindEngineSceneBackend(runtime);
     ASSERT_TRUE(runtime.Initialize(projectRoot.Root()));
     Scene* scene = runtime.GetActiveScene();
     ASSERT_NE(scene, nullptr);