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- Delete outdated duplicate Engine/src/Renderer/VulkanAssetUploader.h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/post/taa.frag

@@ -0,0 +1,82 @@
+#version 450
+
+// TAA resolve：时域抗锯齿。
+//   1. velocity 反推历史像素位置，取历史累积色
+//   2. 方差裁剪（YCoCg）：历史色钳向邻域均值 ± γσ（∩ AABB 极值盒）——
+//      比 RGB min/max 盒稳得多：AABB 盒子被逐帧抖动的高亮像素拽来拽去，
+//      收敛历史持续被重钳 → 周期性残差经 bloom 阈值放大 = 静态模型泛光闪烁
+//   3. mix(cur, hist, alpha) 时域累积
+// 输出写入 TAAColor，它同时也是下一帧的历史（ReadHistory 自引用）。
+
+layout(location = 0) in vec2 fragUV;
+layout(location = 0) out vec4 outColor;
+
+layout(set = 0, binding = 0) uniform sampler2D curImage;       // 当前帧 HDR
+layout(set = 0, binding = 1) uniform sampler2D velocityImage;  // 运动向量（UV 空间）
+layout(set = 0, binding = 2) uniform sampler2D historyImage;   // 上一帧累积结果
+
+// 全屏 pass 通用 push（16B，程序级统一声明，VUID-08878）
+layout(push_constant) uniform PushConstants {
+    float exposure;   // 与其它全屏 pass 布局一致（本 pass 不用）
+    float alpha;      // 历史权重（0.9 = 90% 历史）
+    float param1;
+    float param2;
+} pc;
+
+// YCoCg 感知空间：亮度/色度分离，方差裁剪不在 HDR RGB 直接做
+//（RGB 各通道独立 σ 会偏色；Y 通道主导几何相关性）
+vec3 RgbToYCoCg(vec3 c) {
+    return vec3(0.25 * c.r + 0.5 * c.g + 0.25 * c.b,
+                0.5 * c.r - 0.5 * c.b,
+                -0.25 * c.r + 0.5 * c.g - 0.25 * c.b);
+}
+vec3 YCoCgToRgb(vec3 c) {
+    return vec3(c.x + c.y - c.z,
+                c.x + c.z,
+                c.x - c.y - c.z);
+}
+
+void main() {
+    vec4 cur = texture(curImage, fragUV);
+    vec2 vel = texture(velocityImage, fragUV).xy;
+    vec2 histUV = fragUV - vel;
+
+    vec3 result = cur.rgb;
+
+    // 历史采样：越出画面（相机快速平移）直接用当前帧，不累积
+    if (all(greaterThanEqual(histUV, vec2(0.0))) &&
+        all(lessThanEqual(histUV, vec2(1.0)))) {
+        vec3 hist = texture(historyImage, histUV).rgb;
+
+        // 邻域统计（3×3，YCoCg）：均值 m1、均方 m2、极值盒 [mn, mx]
+        vec2 ts = 1.0 / vec2(textureSize(curImage, 0));
+        vec3 m1 = vec3(0.0);
+        vec3 m2 = vec3(0.0);
+        vec3 mn = vec3(1e9);
+        vec3 mx = vec3(-1e9);
+        for (int y = -1; y <= 1; ++y) {
+            for (int x = -1; x <= 1; ++x) {
+                vec3 c = RgbToYCoCg(texture(curImage, fragUV + vec2(x, y) * ts).rgb);
+                m1 += c;
+                m2 += c * c;
+                mn = min(mn, c);
+                mx = max(mx, c);
+            }
+        }
+        m1 /= 9.0;
+        m2 /= 9.0;
+        vec3 sigma = sqrt(max(m2 - m1 * m1, vec3(0.0)));
+
+        // 方差裁剪盒：均值 ± 1.25σ 再 ∩ 极值盒。历史被钳向"稳定均值"
+        // 而非抖动极值 → 收敛残差大幅下降（泛光闪烁的治本点）。
+        // 极值盒交集保证不引入邻域外颜色（鬼影上界）
+        const float kGamma = 1.25;
+        vec3 lo = max(m1 - kGamma * sigma, mn);
+        vec3 hi = min(m1 + kGamma * sigma, mx);
+
+        vec3 clamped = YCoCgToRgb(clamp(RgbToYCoCg(hist), lo, hi));
+        result = mix(cur.rgb, clamped, pc.alpha);
+    }
+
+    outColor = vec4(result, cur.a);
+}