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/matrix3/determinant.md

@@ -0,0 +1,18 @@
+# Matrix3::Determinant
+
+```cpp
+float Determinant() const
+```
+
+计算矩阵的行列式。
+
+**返回：** `float` - 行列式值
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+Matrix3 mat = ...;
+float det = mat.Determinant();
+```