fix: improve doc link navigation and tree display

- Fix link resolution with proper relative/absolute path handling
- Improve link styling with underline decoration
- Hide leaf nodes from tree, only show directories
- Fix log file path for packaged app

docs/api/rhi/opengl/vertex-array/add-vertex-buffer.md

@@ -0,0 +1,28 @@
+# OpenGLVertexArray::AddVertexBuffer
+
+```cpp
+void AddVertexBuffer(unsigned int buffer, const VertexAttribute& attribute)
+```
+
+添加顶点缓冲区并指定顶点属性。
+
+**参数：**
+- `buffer` - OpenGL 缓冲区对象 ID
+- `attribute` - 顶点属性描述结构体
+
+**示例：**
+
+```cpp
+VertexAttribute attr;
+attr.index = 0;
+attr.count = 3;
+attr.type = GL_FLOAT;
+attr.normalized = GL_FALSE;
+attr.stride = sizeof(Vertex);
+attr.offset = 0;
+vao.AddVertexBuffer(vbo, attr);
+```
+
+## 相关文档
+
+- [OpenGLVertexArray](vertex-array.md) - 返回类总览

docs/api/rhi/opengl/vertex-array/get-id.md

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+# OpenGLVertexArray::GetID
+
+```cpp
+unsigned int GetID() const
+```
+
+获取 OpenGL 顶点数组对象 ID。
+
+**返回：** `unsigned int` - VAO ID
+
+**示例：**
+
+```cpp
+unsigned int vaoID = vao.GetID();
+glBindVertexArray(vaoID);
+```
+
+## 相关文档
+
+- [OpenGLVertexArray](vertex-array.md) - 返回类总览

docs/api/rhi/opengl/vertex-array/get-index-buffer.md

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+# OpenGLVertexArray::GetIndexBuffer
+
+```cpp
+unsigned int GetIndexBuffer() const
+```
+
+获取索引缓冲区 ID。
+
+**返回：** `unsigned int` - 索引缓冲区 ID
+
+**示例：**
+
+```cpp
+unsigned int ibo = vao.GetIndexBuffer();
+```
+
+## 相关文档
+
+- [OpenGLVertexArray](vertex-array.md) - 返回类总览

docs/api/rhi/opengl/vertex-array/get-index-count.md

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+# OpenGLVertexArray::GetIndexCount
+
+```cpp
+unsigned int GetIndexCount() const
+```
+
+获取索引数量。
+
+**返回：** `unsigned int` - 索引数量
+
+**示例：**
+
+```cpp
+unsigned int count = vao.GetIndexCount();
+glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_INT, 0);
+```
+
+## 相关文档
+
+- [OpenGLVertexArray](vertex-array.md) - 返回类总览

docs/api/rhi/opengl/vertex-array/set-index-buffer.md

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+# OpenGLVertexArray::SetIndexBuffer
+
+```cpp
+void SetIndexBuffer(unsigned int buffer, unsigned int type)
+```
+
+设置索引缓冲区。
+
+**参数：**
+- `buffer` - OpenGL 缓冲区对象 ID
+- `type` - 索引数据类型（GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, GL_UNSIGNED_INT）
+
+**示例：**
+
+```cpp
+vao.SetIndexBuffer(ibo, GL_UNSIGNED_INT);
+```
+
+## 相关文档
+
+- [OpenGLVertexArray](vertex-array.md) - 返回类总览

docs/api/rhi/opengl/vertex-array/vertex-array.md

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+# OpenGLVertexArray
+
+**命名空间**: `XCEngine::RHI`
+
+**描述**: OpenGL 顶点数组对象 (VAO) 封装。
+
+## 公共方法
+
+| 方法 | 描述 |
+|------|------|
+| [`Initialize`](../../../threading/task-system/initialize.md) | 初始化顶点数组 |
+| [`AddVertexBuffer`](add-vertex-buffer.md) | 添加顶点缓冲 |
+| [`SetIndexBuffer`](set-index-buffer.md) | 设置索引缓冲 |
+| [`Shutdown`](../../../threading/task-system/shutdown.md) | 关闭顶点数组 |
+| [`Bind`](../../shader/bind.md) | 绑定顶点数组 |
+| [`Unbind`](../../shader/unbind.md) | 解绑顶点数组 |
+| [`GetID`](get-id.md) | 获取 OpenGL VAO ID |
+| [`GetIndexBuffer`](get-index-buffer.md) | 获取索引缓冲 |
+| [`GetIndexCount`](get-index-count.md) | 获取索引数量 |
+
+## 相关文档
+
+- [OpenGL 后端总览](../overview.md)