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/rect/contains-vector2.md

@@ -0,0 +1,24 @@
+# Rect::Contains (Vector2)
+
+```cpp
+bool Contains(const Vector2& point) const
+```
+
+检测 Vector2 点是否在矩形内。
+
+**参数：**
+- `point` - 要检测的二维点
+
+**返回：** `bool` - 点在矩形内（包含边界）返回 true
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+Rect rect(0.0f, 0.0f, 100.0f, 100.0f);
+Vector2 point(50.0f, 50.0f);
+if (rect.Contains(point)) {
+    // 点在矩形内
+}
+```