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- Delete outdated duplicate Engine/src/Renderer/VulkanAssetUploader.h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/Editor.cpp

@@ -12,13 +12,13 @@
 //
 
 #include "Editor.h"
-#include "AssetBrowserPanel.h"
-#include "HierarchyPanel.h"
-#include "InspectorPanel.h"
-#include "MaterialEditorPanel.h"
-#include "ControllerEditorPanel.h"
-#include "ViewportPanel.h"
-#include "StatsPanel.h"
+#include "panels/AssetBrowserPanel.h"
+#include "panels/HierarchyPanel.h"
+#include "panels/InspectorPanel.h"
+#include "panels/MaterialEditorPanel.h"
+#include "panels/ControllerEditorPanel.h"
+#include "panels/ViewportPanel.h"
+#include "panels/StatsPanel.h"
 
 #include <Engine/Core/Log.h>
 #include <Engine/Core/Time.h>

App/editor/Editor.h

@@ -15,7 +15,7 @@
 #define HELLOVULKAN_EDITOR_H
 
 #include "EditorContext.h"
-#include "ViewportPanel.h"   // ViewportInputState（成员按值持有）
+#include "panels/ViewportPanel.h"   // ViewportInputState（成员按值持有）
 
 #include <Engine/Core/Types.h>   // u32（SelectEntity 位模式转换）