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- Delete outdated duplicate Engine/src/Renderer/VulkanAssetUploader.h

shaders/debug/hitproxy.vert

@@ -0,0 +1,57 @@
+#version 450
+
+// HitProxy 顶点：UE 式 GPU 拾取——Forward 同结构画一遍（无光照无纹理），
+// 输出 per-instance 实体 id。位置变换与 simple_shader.vert 完全同源
+//（模型矩阵 + 蒙皮），保证拾取像素与可见画面像素一致。
+//
+// Set0 与 simple_shader 共用同一 uboSetLayout（SceneGpu 契约）；
+// 本 shader 只声明用到的绑定，描述符集合里未用的绑定合法。
+
+layout(location = 0) in vec3 inPosition;
+layout(location = 4) in uvec4 inBoneIds;    // 骨骼槽（palette 下标）
+layout(location = 5) in vec4 inWeights;     // 无骨骼顶点 = (1,0,0,0)
+
+layout(location = 0) flat out uint outEntityId;   // 整数 varying 必须 flat
+
+layout(std430, set = 0, binding = 1) readonly buffer ObjectBuffer {
+    mat4 models[];
+} objects;
+
+layout(std430, set = 0, binding = 3) readonly buffer SkinOffsetBuffer {
+    uint skinBases[];
+} skinOffsets;
+
+layout(std430, set = 0, binding = 4) readonly buffer SkinPaletteBuffer {
+    mat4 bones[];
+} skinPalettes;
+
+// per-instance 实体 id（与 models 平行对齐，SceneRenderer 收集时写入）
+layout(std430, set = 0, binding = 5) readonly buffer EntityIdBuffer {
+    uint ids[];
+} entityIds;
+
+// 只用 view/proj：std140 前两个 mat4 与完整 UBO 的布局前缀一致
+layout(set = 0, binding = 0) uniform Ubo {
+    mat4 view;
+    mat4 proj;
+} ubo;
+
+// 4 权重混合的蒙皮矩阵（与 simple_shader.vert 同逻辑）
+mat4 SkinMatrix() {
+    uint base = skinOffsets.skinBases[gl_InstanceIndex];
+    return skinPalettes.bones[base + inBoneIds.x] * inWeights.x +
+           skinPalettes.bones[base + inBoneIds.y] * inWeights.y +
+           skinPalettes.bones[base + inBoneIds.z] * inWeights.z +
+           skinPalettes.bones[base + inBoneIds.w] * inWeights.w;
+}
+
+void main() {
+    mat4 model = objects.models[gl_InstanceIndex];
+    mat4 skin = SkinMatrix();
+
+    vec3 skinnedPos = (skin * vec4(inPosition, 1.0)).xyz;
+    vec4 worldPos = model * vec4(skinnedPos, 1.0);
+    gl_Position = ubo.proj * ubo.view * worldPos;
+
+    outEntityId = entityIds.ids[gl_InstanceIndex];
+}