优化

kernel/src/kernel/double_buffer/core.hpp

@@ -586,10 +586,18 @@ concept Object_Root = requires {
     requires Object_Core<T>;
     typename T::template Builder<T>;
 };
-namespace detail {
+// Attached 约束真正进入运行时依赖图的对象必须来自 Attach_Object。Rely_Type 只声明允许绑定的基类型，实际节点在加入图时必须满足该概念。
 template <typename T>
-concept Rely_Object = requires {
-    requires Root_Derived<T>;
+concept Attached = requires {
+    requires Object_Core<T>;
+    typename T::Attached_Object;
+    requires Object_Root<typename T::Attached_Object>;
+    requires std::derived_from<T, typename T::Attached_Object>;
+};
+namespace detail {
+// Rely_Object 表示已经附着运行时数据、可以安全进入依赖图的实际对象类型。图内保存 Root* 后静态类型会被擦除，因此该约束必须在入图边界完成。
+template <typename T>
+concept Rely_Object = Attached<T> && requires {
     typename T::State;
     typename T::Buffers;
     requires Prop_State<typename T::State>;

kernel/src/kernel/double_buffer/object.hpp

@@ -57,13 +57,6 @@ concept Impl_Mechanisms = requires {
     requires State_List<Impl_States<Base, Local_Mechanisms...>>;
 };
 }
-template <typename T>
-concept Attached = requires {
-    requires Object_Core<T>;
-    typename T::Attached_Object;
-    requires Object_Root<typename T::Attached_Object>;
-    requires std::derived_from<T, typename T::Attached_Object>;
-};
 // Impl 在编译期把 Buffer/Rely/State 三类机制叠加到继承链；每一层只声明自己的机制，最终类型汇总完整能力。
 template <typename Self, typename Base, typename... Local_Mechanisms> requires
     detail::Impl_Mechanisms<Base, Local_Mechanisms...>

kernel/src/kernel/double_buffer/rely.hpp

@@ -117,7 +117,7 @@ public:
             this->rely->for_each(std::forward<Callback>(callback));
         }
     };
-    // Editor 只操作待提交图；结构是否合法由编辑完成后的拓扑验证统一判断，不在每个底层操作重复检查。
+    // Editor 只操作待提交图；结构是否合法由编辑完成后的拓扑验证统一判断。新增节点和依赖源必须满足 Attached，保证进入图的 Root* 一定已由 Attach_Object 绑定运行时 exchange。
     template <typename Bound_Object> requires Root_Derived<Bound_Object>
     class Editor : public View {
     private:

kernel/src/kernel/render.cpp

@@ -2,6 +2,7 @@
 #include <chrono>
 #include <limits>
 #include <taskflow/observer/interface.hpp>
+#include "double_buffer/core.hpp"
 namespace aethera {
 namespace {
 class Stage_Registry : ::double_buffer::Pinned {

kernel/src/kernel/render.hpp

@@ -1,5 +1,6 @@
 #pragma once
 #include "double_buffer/object.hpp"
+#include "double_buffer/core.hpp"
 #include <array>
 #include <string>
 #include <taskflow/taskflow.hpp>

kernel/src/test/rely_test.cpp

@@ -21,6 +21,12 @@ struct Graph_Object : double_buffer::Impl<Graph_Object, double_buffer::Root, dou
     struct Private : Prev_Private {};
 };
 using Graph = double_buffer::Attach_Object<Graph_Object>;
+static_assert(!double_buffer::Attached<Node_Object>);
+static_assert(double_buffer::Attached<Node>);
+static_assert(!double_buffer::detail::Rely_Object<Node_Object>);
+static_assert(double_buffer::detail::Rely_Object<Node>);
+static_assert(!double_buffer::detail::State_Rely_Source<Node_Object, &Node_Object::State::value>);
+static_assert(double_buffer::detail::State_Rely_Source<Node, &Node_Object::State::value>);
 }
 TEST(rely_storage, edited_graph_moves_inward_and_stays_synchronized) {
     Node first;