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- Delete outdated duplicate Engine/src/Renderer/VulkanAssetUploader.h

Engine/src/Renderer/Passes/PhysicsDebugPass.cpp

@@ -72,7 +72,7 @@ namespace Engine::Passes
         m_Layout = descriptors.CreatePipelineLayout(
             std::vector<vk::DescriptorSetLayout>{}, sizeof(glm::mat4));
 
-        const std::string shaderDir = "shaders/";
+        const std::string shaderDir = "shaders/debug/";
         auto vert = shaders.CreateFromFile(
             shaderDir + "debug_line.vert.spv",
             vk::ShaderStageFlagBits::eVertex,