chore: checkpoint current workspace changes

new_editor/app/Application.h

@@ -8,6 +8,8 @@
 #include <Host/InputModifierTracker.h>
 #include <Host/NativeRenderer.h>
 
+#include "Icons/ProductBuiltInIcons.h"
+#include "Panels/ProductHierarchyPanel.h"
 #include "Panels/ProductProjectPanel.h"
 
 #include <XCEditor/Foundation/UIEditorShortcutManager.h>
@@ -45,6 +47,7 @@ private:
     void RenderFrame();
     void OnResize(UINT width, UINT height);
     void OnDpiChanged(UINT dpi, const RECT& suggestedRect);
+    bool IsPointerInsideClientArea() const;
     bool ApplyCurrentCursor() const;
     LPCWSTR ResolveCurrentCursorResource() const;
     float GetDpiScale() const;
@@ -83,6 +86,8 @@ private:
     EditorShellAssetValidationResult m_shellValidation = {};
     UIEditorWorkspaceController m_workspaceController = {};
     UIEditorShortcutManager m_shortcutManager = {};
+    App::ProductBuiltInIcons m_builtInIcons = {};
+    App::ProductHierarchyPanel m_hierarchyPanel = {};
     App::ProductProjectPanel m_projectPanel = {};
     UIEditorShellInteractionServices m_shellServices = {};
     UIEditorShellInteractionState m_shellInteractionState = {};