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/resources/filesystem/initialize.md

@@ -0,0 +1,24 @@
+# ResourceFileSystem::Initialize
+
+```cpp
+void Initialize(const Containers::String& rootPath)
+```
+
+初始化资源文件系统。设置资源根目录，准备虚拟文件系统。
+
+**参数：**
+- `rootPath` - 资源根目录路径
+
+**返回：** 无
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+ResourceFileSystem::Get().Initialize("resources/");
+```
+
+## 相关文档
+
+- [ResourceFileSystem 总览](filesystem.md) - 返回类总览