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/d3d12/constant-buffer-view/constant-buffer-view.md

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+# D3D12ConstantBufferView
+
+**命名空间**: `XCEngine::RHI`
+
+**描述**: DirectX 12 常量缓冲区视图的 D3D12 实现。
+
+## 公共方法
+
+| 方法 | 描述 |
+|------|------|
+| [`Initialize`](../../../threading/task-system/initialize.md) | 初始化常量缓冲区视图 |
+| [`Shutdown`](../../../threading/task-system/shutdown.md) | 关闭常量缓冲区视图 |
+| [`GetCPUDescriptorHandle`](get-cpu-descriptor-handle.md) | 获取 CPU 描述符句柄 |
+
+## 相关文档
+
+- [D3D12 后端总览](../../opengl/overview.md)