fix: improve doc link navigation and tree display

- Fix link resolution with proper relative/absolute path handling
- Improve link styling with underline decoration
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- Fix log file path for packaged app

docs/api/math/vector4/dot.md

@@ -0,0 +1,23 @@
+# Vector4::Dot
+
+```cpp
+static float Dot(const Vector4& a, const Vector4& b)
+```
+
+计算两个 4D 向量的点积。
+
+**参数：**
+- `a` - 第一个向量
+- `b` - 第二个向量
+
+**返回：** `float` - 点积结果
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+Vector4 a(1.0f, 2.0f, 3.0f, 4.0f);
+Vector4 b(4.0f, 3.0f, 2.0f, 1.0f);
+float dot = Vector4::Dot(a, b);  // 20.0f
+```