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/math/frustum/contains-bounds.md

@@ -0,0 +1,25 @@
+# Frustum::Contains (bounds)
+
+```cpp
+bool Contains(const Bounds& bounds) const
+```
+
+检测轴对齐包围盒是否完全在视锥体内。
+
+**参数：**
+- `bounds` - 要检测的轴对齐包围盒
+
+**返回：** `bool` - Bounds 完全在视锥内返回 true
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+Frustum frustum = camera.CalculateFrustum();
+Bounds objectBounds = object.GetWorldBounds();
+if (frustum.Contains(objectBounds)) {
+    // 包围盒完全在视锥内，需要渲染
+    Render(object);
+}
+```