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- Delete outdated duplicate Engine/src/Renderer/VulkanAssetUploader.h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/CMakeLists.txt

@@ -1,7 +1,9 @@
 # App 层源文件：main + editor/（docking 编辑器）+ scripts/（C++ 原生脚本）
 file(GLOB EDITOR_SOURCES CONFIGURE_DEPENDS
         ${CMAKE_CURRENT_SOURCE_DIR}/editor/*.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/editor/*.h)
+        ${CMAKE_CURRENT_SOURCE_DIR}/editor/*.h
+        ${CMAKE_CURRENT_SOURCE_DIR}/editor/panels/*.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/editor/panels/*.h)
 
 file(GLOB SCRIPT_SOURCES CONFIGURE_DEPENDS
         ${CMAKE_CURRENT_SOURCE_DIR}/scripts/*.cpp)