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/quaternion/slerp.md

@@ -0,0 +1,22 @@
+# Quaternion::Slerp
+
+```cpp
+static Quaternion Slerp(const Quaternion& a, const Quaternion& b, float t)
+```
+
+在两个四元数之间进行球面线性插值。
+
+**参数：**
+- `a` - 起始四元数
+- `b` - 结束四元数
+- `t` - 插值因子（0-1）
+
+**返回：** `Quaternion` - 插值结果
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+Quaternion lerped = Quaternion::Slerp(rot1, rot2, 0.5f);
+```