docs: update core and debug API docs

docs/api/core/refcounted/AddRef.md

@@ -4,34 +4,40 @@
 void AddRef();
 ```
 
-增加引用计数。
+原子地增加引用计数。
 
 **描述**
 
 原子地增加引用计数。在复制 `RefCounted` 指针或传递引用时调用此方法。
 
+**线程安全：** ✅
+
 **复杂度：** O(1)
 
 **示例：**
 
 ```cpp
 #include <XCEngine/Core/RefCounted.h>
+#include <cstdio>
 
-class MyObject : public RefCounted {
+class MyObject : public XCEngine::Core::RefCounted {
 public:
-    void DoSomething() { /* ... */ }
+    void DoSomething() { }
 };
 
-// 创建对象（构造时 refCount = 1）
-MyObject* obj = new MyObject();
-
-// 手动增加引用
-obj->AddRef();  // refCount = 2
-obj->AddRef();  // refCount = 3
-
-// 需要释放额外的引用
-obj->Release();  // refCount = 2
-obj->Release();  // refCount = 1
+int main() {
+    MyObject* obj = new MyObject();
+    printf("After create: %u\n", obj->GetRefCount());
+    
+    obj->AddRef();
+    printf("After AddRef: %u\n", obj->GetRefCount());
+    
+    obj->Release();
+    printf("After Release: %u\n", obj->GetRefCount());
+    
+    obj->Release();
+    return 0;
+}
 ```
 
 ## 相关文档