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/vertex-array.md

@@ -0,0 +1,23 @@
+# 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)