Reorganize directory layout: editor panels/, grouped shaders, drop stale header

- App/editor: move 7 panels into panels/ (Editor core stays at root)
- shaders/: group into pbr/ post/ debug/ env/ (runtime load paths updated)
- Delete outdated duplicate Engine/src/Renderer/VulkanAssetUploader.h

App/editor/panels/HierarchyPanel.h

@@ -0,0 +1,21 @@
+//
+// HierarchyPanel：实体层级树面板。
+//
+// 树形展示父子层级（UE Outliner）、点击选中、拖拽改父/拖到空白挂根
+//（keepWorld）、右键 Create Child / Detach / Delete（级联随葬，帧尾
+// flush，遍历安全）。每项尾缀显示组件构成徽标。
+//
+
+#ifndef HELLOVULKAN_HIERARCHYPANEL_H
+#define HELLOVULKAN_HIERARCHYPANEL_H
+
+#include "EditorContext.h"
+
+#include <entt/entt.hpp>
+
+class HierarchyPanel {
+public:
+    void Draw(const EditorContext& ctx, entt::entity& selected);
+};
+
+#endif //HELLOVULKAN_HIERARCHYPANEL_H