feat: 引入 RenderGraph、Application 框架、ECS 与资产句柄系统

架构分层（自上而下）：
  App(SandboxApp) → Application(生命周期+事件) → Scene(ECS) / AssetManager(句柄) → Renderer → RenderGraph → Vulkan 模块

- RenderGraph：声明式帧图。虚拟资源+生成号句柄、死 pass 剔除、
  拓扑排序、资源生命周期、barrier 编译期预算（Synchronization2）、
  物理镜像池按帧槽位隔离（帧间竞争从根上消除）
- 帧同步修复：per-frame-slot 命令缓冲与 UBO ring（原先单份存在
  数据竞争）；统一 kMaxFramesInFlight / FrameContext
- Application：生命周期钩子（OnInit/OnUpdate/OnRender/OnShutdown）
  + 事件系统（GLFW 回调 → POD 事件 → 类型化钩子）；main 只 new 派生类
- ECS：自研稀疏集 Registry（Entity=(index,generation) 防悬空，
  O(1) 增删查，Each 取最小池遍历）；Scene 延迟销毁队列；
  IdComponent{UUID} 稳定外部身份
- Assets：AssetManager + AssetHandle。组件存句柄不存裸指针/Ref
  （单一所有者 + 多使用者），Renderer 删除 LoadModel 改为纯消费
- 修复退出析构：成员析构前 GPU waitIdle（资产层先于 Renderer
  析构导致 VUID-00922 资源销毁时仍在使用）
- 引入 entt 子模块备用

validation 全程零错误零警告（RTX 5060 实测）

Engine/src/Renderer/Camera.cpp

@@ -0,0 +1,64 @@
+//
+// Created by atdunbg on 2026/9/22.
+//
+
+#include <Engine/Renderer/Camera.h>
+#include <Engine/Core/Window.h>
+
+#include <glm/gtc/matrix_transform.hpp>
+
+#include "GLFW/glfw3.h"
+
+namespace Engine {
+
+    void Camera::Update(Window& window, f32 deltaTime)
+    {
+        // 鼠标旋转（需显式启用，配合 cursor capture 使用）
+        if (m_MouseLookEnabled)
+        {
+            f32 mouseDX = 0, mouseDY = 0;
+            window.GetMouseDelta(mouseDX, mouseDY);
+
+            if (mouseDX != 0 || mouseDY != 0)
+            {
+                m_Yaw += mouseDX * m_MouseSensitivity;
+                m_Pitch -= mouseDY * m_MouseSensitivity;
+                m_Pitch = glm::clamp(m_Pitch, -89.0f, 89.0f);
+            }
+        }
+
+        UpdateBasis();
+
+        f32 speed = m_MoveSpeed * deltaTime;
+        if (window.IsKeyPressed(GLFW_KEY_W)) m_Position += m_Forward * speed;
+        if (window.IsKeyPressed(GLFW_KEY_S)) m_Position -= m_Forward * speed;
+        if (window.IsKeyPressed(GLFW_KEY_A)) m_Position -= m_Right * speed;
+        if (window.IsKeyPressed(GLFW_KEY_D)) m_Position += m_Right * speed;
+        if (window.IsKeyPressed(GLFW_KEY_SPACE)) m_Position.y += speed;
+        if (window.IsKeyPressed(GLFW_KEY_LEFT_SHIFT)) m_Position.y -= speed;
+    }
+
+    void Camera::UpdateBasis()
+    {
+        m_Forward.x = cosf(glm::radians(m_Yaw)) * cosf(glm::radians(m_Pitch));
+        m_Forward.y = sinf(glm::radians(m_Pitch));
+        m_Forward.z = sinf(glm::radians(m_Yaw)) * cosf(glm::radians(m_Pitch));
+        m_Forward = glm::normalize(m_Forward);
+
+        m_Right = glm::normalize(glm::cross(m_Forward, glm::vec3(0, 1, 0)));
+        m_Up = glm::normalize(glm::cross(m_Right, m_Forward));
+    }
+
+    glm::mat4 Camera::GetView() const
+    {
+        return glm::lookAt(m_Position, m_Position + m_Forward, m_Up);
+    }
+
+    glm::mat4 Camera::GetProjection(f32 aspect, f32 nearZ, f32 farZ) const
+    {
+        auto proj = glm::perspective(glm::radians(45.0f), aspect, nearZ, farZ);
+        proj[1][1] *= -1.0f; // Vulkan Y 翻转
+        return proj;
+    }
+
+} // namespace Engine